const eval of atan2

Bug: tint:1581

Change-Id: I6268e291540bc8c712f6925f0bcb82c5873359c7
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/96902
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>

test/tint/builtins/gen/literal/atan2/034ace.wgsl

@@ -0,0 +1,43 @@
+// Copyright 2021 The Tint Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+////////////////////////////////////////////////////////////////////////////////
+// File generated by tools/src/cmd/gen
+// using the template:
+//   test/tint/builtins/gen/gen.wgsl.tmpl
+//
+// Do not modify this file directly
+////////////////////////////////////////////////////////////////////////////////
+
+
+// fn atan2(fa, fa) -> fa
+fn atan2_034ace() {
+  var res = atan2(1, 1);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  atan2_034ace();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  atan2_034ace();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  atan2_034ace();
+}

test/tint/builtins/gen/literal/atan2/034ace.wgsl.expected.dxc.hlsl

@@ -0,0 +1,30 @@
+void atan2_034ace() {
+  float res = 0.785398185f;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  atan2_034ace();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  atan2_034ace();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  atan2_034ace();
+  return;
+}

test/tint/builtins/gen/literal/atan2/034ace.wgsl.expected.fxc.hlsl

@@ -0,0 +1,30 @@
+void atan2_034ace() {
+  float res = 0.785398185f;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  atan2_034ace();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  atan2_034ace();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  atan2_034ace();
+  return;
+}

test/tint/builtins/gen/literal/atan2/034ace.wgsl.expected.glsl

@@ -0,0 +1,49 @@
+#version 310 es
+
+void atan2_034ace() {
+  float res = 0.785398185f;
+}
+
+vec4 vertex_main() {
+  atan2_034ace();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void atan2_034ace() {
+  float res = 0.785398185f;
+}
+
+void fragment_main() {
+  atan2_034ace();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void atan2_034ace() {
+  float res = 0.785398185f;
+}
+
+void compute_main() {
+  atan2_034ace();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}

test/tint/builtins/gen/literal/atan2/034ace.wgsl.expected.msl

@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void atan2_034ace() {
+  float res = 0.785398185f;
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  atan2_034ace();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  atan2_034ace();
+  return;
+}
+
+kernel void compute_main() {
+  atan2_034ace();
+  return;
+}
+

test/tint/builtins/gen/literal/atan2/034ace.wgsl.expected.spvasm

@@ -0,0 +1,64 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 30
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %atan2_034ace "atan2_034ace"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+%float_0_785398185 = OpConstant %float 0.785398185
+%_ptr_Function_float = OpTypePointer Function %float
+         %16 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
+%atan2_034ace = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_float Function %8
+               OpStore %res %float_0_785398185
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %16
+         %18 = OpLabel
+         %19 = OpFunctionCall %void %atan2_034ace
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %21 = OpLabel
+         %22 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %22
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %25 = OpLabel
+         %26 = OpFunctionCall %void %atan2_034ace
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %28 = OpLabel
+         %29 = OpFunctionCall %void %atan2_034ace
+               OpReturn
+               OpFunctionEnd

test/tint/builtins/gen/literal/atan2/034ace.wgsl.expected.wgsl

@@ -0,0 +1,19 @@
+fn atan2_034ace() {
+  var res = atan2(1, 1);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  atan2_034ace();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  atan2_034ace();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  atan2_034ace();
+}

test/tint/builtins/gen/literal/atan2/3c2865.wgsl

@@ -0,0 +1,43 @@
+// Copyright 2021 The Tint Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+////////////////////////////////////////////////////////////////////////////////
+// File generated by tools/src/cmd/gen
+// using the template:
+//   test/tint/builtins/gen/gen.wgsl.tmpl
+//
+// Do not modify this file directly
+////////////////////////////////////////////////////////////////////////////////
+
+
+// fn atan2(vec<3, fa>, vec<3, fa>) -> vec<3, fa>
+fn atan2_3c2865() {
+  var res = atan2(vec3(1), vec3(1));
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  atan2_3c2865();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  atan2_3c2865();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  atan2_3c2865();
+}

test/tint/builtins/gen/literal/atan2/3c2865.wgsl.expected.dxc.hlsl

@@ -0,0 +1,30 @@
+void atan2_3c2865() {
+  float3 res = (0.785398185f).xxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  atan2_3c2865();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  atan2_3c2865();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  atan2_3c2865();
+  return;
+}

test/tint/builtins/gen/literal/atan2/3c2865.wgsl.expected.fxc.hlsl

@@ -0,0 +1,30 @@
+void atan2_3c2865() {
+  float3 res = (0.785398185f).xxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  atan2_3c2865();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  atan2_3c2865();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  atan2_3c2865();
+  return;
+}

test/tint/builtins/gen/literal/atan2/3c2865.wgsl.expected.glsl

@@ -0,0 +1,49 @@
+#version 310 es
+
+void atan2_3c2865() {
+  vec3 res = vec3(0.785398185f);
+}
+
+vec4 vertex_main() {
+  atan2_3c2865();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void atan2_3c2865() {
+  vec3 res = vec3(0.785398185f);
+}
+
+void fragment_main() {
+  atan2_3c2865();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void atan2_3c2865() {
+  vec3 res = vec3(0.785398185f);
+}
+
+void compute_main() {
+  atan2_3c2865();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}

test/tint/builtins/gen/literal/atan2/3c2865.wgsl.expected.msl

@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void atan2_3c2865() {
+  float3 res = float3(0.785398185f);
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  atan2_3c2865();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  atan2_3c2865();
+  return;
+}
+
+kernel void compute_main() {
+  atan2_3c2865();
+  return;
+}
+

test/tint/builtins/gen/literal/atan2/3c2865.wgsl.expected.spvasm

@@ -0,0 +1,67 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 33
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %atan2_3c2865 "atan2_3c2865"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+    %v3float = OpTypeVector %float 3
+%float_0_785398185 = OpConstant %float 0.785398185
+         %15 = OpConstantComposite %v3float %float_0_785398185 %float_0_785398185 %float_0_785398185
+%_ptr_Function_v3float = OpTypePointer Function %v3float
+         %18 = OpConstantNull %v3float
+         %19 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
+%atan2_3c2865 = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_v3float Function %18
+               OpStore %res %15
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %19
+         %21 = OpLabel
+         %22 = OpFunctionCall %void %atan2_3c2865
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %24 = OpLabel
+         %25 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %25
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %28 = OpLabel
+         %29 = OpFunctionCall %void %atan2_3c2865
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %31 = OpLabel
+         %32 = OpFunctionCall %void %atan2_3c2865
+               OpReturn
+               OpFunctionEnd

test/tint/builtins/gen/literal/atan2/3c2865.wgsl.expected.wgsl

@@ -0,0 +1,19 @@
+fn atan2_3c2865() {
+  var res = atan2(vec3(1), vec3(1));
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  atan2_3c2865();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  atan2_3c2865();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  atan2_3c2865();
+}

test/tint/builtins/gen/literal/atan2/57fb13.wgsl.expected.dxc.hlsl

@@ -1,5 +1,5 @@
 void atan2_57fb13() {
-  float2 res = atan2((1.0f).xx, (1.0f).xx);
+  float2 res = (0.785398185f).xx;
 }
 
 struct tint_symbol {

test/tint/builtins/gen/literal/atan2/57fb13.wgsl.expected.fxc.hlsl

@@ -1,5 +1,5 @@
 void atan2_57fb13() {
-  float2 res = atan2((1.0f).xx, (1.0f).xx);
+  float2 res = (0.785398185f).xx;
 }
 
 struct tint_symbol {

test/tint/builtins/gen/literal/atan2/57fb13.wgsl.expected.glsl

@@ -1,7 +1,7 @@
 #version 310 es
 
 void atan2_57fb13() {
-  vec2 res = atan(vec2(1.0f), vec2(1.0f));
+  vec2 res = vec2(0.785398185f);
 }
 
 vec4 vertex_main() {
@@ -21,7 +21,7 @@ void main() {
 precision mediump float;
 
 void atan2_57fb13() {
-  vec2 res = atan(vec2(1.0f), vec2(1.0f));
+  vec2 res = vec2(0.785398185f);
 }
 
 void fragment_main() {
@@ -35,7 +35,7 @@ void main() {
 #version 310 es
 
 void atan2_57fb13() {
-  vec2 res = atan(vec2(1.0f), vec2(1.0f));
+  vec2 res = vec2(0.785398185f);
 }
 
 void compute_main() {

test/tint/builtins/gen/literal/atan2/57fb13.wgsl.expected.msl

@@ -2,7 +2,7 @@
 
 using namespace metal;
 void atan2_57fb13() {
-  float2 res = atan2(float2(1.0f), float2(1.0f));
+  float2 res = float2(0.785398185f);
 }
 
 struct tint_symbol {

test/tint/builtins/gen/literal/atan2/57fb13.wgsl.expected.spvasm

@@ -1,10 +1,9 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 34
+; Bound: 33
 ; Schema: 0
                OpCapability Shader
-         %15 = OpExtInstImport "GLSL.std.450"
                OpMemoryModel Logical GLSL450
                OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
                OpEntryPoint Fragment %fragment_main "fragment_main"
@@ -32,37 +31,37 @@
        %void = OpTypeVoid
           %9 = OpTypeFunction %void
     %v2float = OpTypeVector %float 2
-    %float_1 = OpConstant %float 1
-         %17 = OpConstantComposite %v2float %float_1 %float_1
+%float_0_785398185 = OpConstant %float 0.785398185
+         %15 = OpConstantComposite %v2float %float_0_785398185 %float_0_785398185
 %_ptr_Function_v2float = OpTypePointer Function %v2float
-         %20 = OpConstantNull %v2float
-         %21 = OpTypeFunction %v4float
+         %18 = OpConstantNull %v2float
+         %19 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
 %atan2_57fb13 = OpFunction %void None %9
          %12 = OpLabel
-        %res = OpVariable %_ptr_Function_v2float Function %20
-         %13 = OpExtInst %v2float %15 Atan2 %17 %17
-               OpStore %res %13
+        %res = OpVariable %_ptr_Function_v2float Function %18
+               OpStore %res %15
                OpReturn
                OpFunctionEnd
-%vertex_main_inner = OpFunction %v4float None %21
-         %23 = OpLabel
-         %24 = OpFunctionCall %void %atan2_57fb13
+%vertex_main_inner = OpFunction %v4float None %19
+         %21 = OpLabel
+         %22 = OpFunctionCall %void %atan2_57fb13
                OpReturnValue %5
                OpFunctionEnd
 %vertex_main = OpFunction %void None %9
-         %26 = OpLabel
-         %27 = OpFunctionCall %v4float %vertex_main_inner
-               OpStore %value %27
+         %24 = OpLabel
+         %25 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %25
                OpStore %vertex_point_size %float_1
                OpReturn
                OpFunctionEnd
 %fragment_main = OpFunction %void None %9
-         %29 = OpLabel
-         %30 = OpFunctionCall %void %atan2_57fb13
+         %28 = OpLabel
+         %29 = OpFunctionCall %void %atan2_57fb13
                OpReturn
                OpFunctionEnd
 %compute_main = OpFunction %void None %9
-         %32 = OpLabel
-         %33 = OpFunctionCall %void %atan2_57fb13
+         %31 = OpLabel
+         %32 = OpFunctionCall %void %atan2_57fb13
                OpReturn
                OpFunctionEnd

test/tint/builtins/gen/literal/atan2/96057c.wgsl.expected.dxc.hlsl

@@ -1,5 +1,5 @@
 void atan2_96057c() {
-  float res = atan2(1.0f, 1.0f);
+  float res = 0.785398185f;
 }
 
 struct tint_symbol {

test/tint/builtins/gen/literal/atan2/96057c.wgsl.expected.fxc.hlsl

@@ -1,5 +1,5 @@
 void atan2_96057c() {
-  float res = atan2(1.0f, 1.0f);
+  float res = 0.785398185f;
 }
 
 struct tint_symbol {

test/tint/builtins/gen/literal/atan2/96057c.wgsl.expected.glsl

@@ -1,7 +1,7 @@
 #version 310 es
 
 void atan2_96057c() {
-  float res = atan(1.0f, 1.0f);
+  float res = 0.785398185f;
 }
 
 vec4 vertex_main() {
@@ -21,7 +21,7 @@ void main() {
 precision mediump float;
 
 void atan2_96057c() {
-  float res = atan(1.0f, 1.0f);
+  float res = 0.785398185f;
 }
 
 void fragment_main() {
@@ -35,7 +35,7 @@ void main() {
 #version 310 es
 
 void atan2_96057c() {
-  float res = atan(1.0f, 1.0f);
+  float res = 0.785398185f;
 }
 
 void compute_main() {

test/tint/builtins/gen/literal/atan2/96057c.wgsl.expected.msl

@@ -2,7 +2,7 @@
 
 using namespace metal;
 void atan2_96057c() {
-  float res = atan2(1.0f, 1.0f);
+  float res = 0.785398185f;
 }
 
 struct tint_symbol {

test/tint/builtins/gen/literal/atan2/96057c.wgsl.expected.spvasm

@@ -1,10 +1,9 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 31
+; Bound: 30
 ; Schema: 0
                OpCapability Shader
-         %14 = OpExtInstImport "GLSL.std.450"
                OpMemoryModel Logical GLSL450
                OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
                OpEntryPoint Fragment %fragment_main "fragment_main"
@@ -31,35 +30,35 @@
 %vertex_point_size = OpVariable %_ptr_Output_float Output %8
        %void = OpTypeVoid
           %9 = OpTypeFunction %void
-    %float_1 = OpConstant %float 1
+%float_0_785398185 = OpConstant %float 0.785398185
 %_ptr_Function_float = OpTypePointer Function %float
-         %18 = OpTypeFunction %v4float
+         %16 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
 %atan2_96057c = OpFunction %void None %9
          %12 = OpLabel
         %res = OpVariable %_ptr_Function_float Function %8
-         %13 = OpExtInst %float %14 Atan2 %float_1 %float_1
-               OpStore %res %13
+               OpStore %res %float_0_785398185
                OpReturn
                OpFunctionEnd
-%vertex_main_inner = OpFunction %v4float None %18
-         %20 = OpLabel
-         %21 = OpFunctionCall %void %atan2_96057c
+%vertex_main_inner = OpFunction %v4float None %16
+         %18 = OpLabel
+         %19 = OpFunctionCall %void %atan2_96057c
                OpReturnValue %5
                OpFunctionEnd
 %vertex_main = OpFunction %void None %9
-         %23 = OpLabel
-         %24 = OpFunctionCall %v4float %vertex_main_inner
-               OpStore %value %24
+         %21 = OpLabel
+         %22 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %22
                OpStore %vertex_point_size %float_1
                OpReturn
                OpFunctionEnd
 %fragment_main = OpFunction %void None %9
-         %26 = OpLabel
-         %27 = OpFunctionCall %void %atan2_96057c
+         %25 = OpLabel
+         %26 = OpFunctionCall %void %atan2_96057c
                OpReturn
                OpFunctionEnd
 %compute_main = OpFunction %void None %9
-         %29 = OpLabel
-         %30 = OpFunctionCall %void %atan2_96057c
+         %28 = OpLabel
+         %29 = OpFunctionCall %void %atan2_96057c
                OpReturn
                OpFunctionEnd

test/tint/builtins/gen/literal/atan2/a70d0d.wgsl.expected.dxc.hlsl

@@ -1,5 +1,5 @@
 void atan2_a70d0d() {
-  float3 res = atan2((1.0f).xxx, (1.0f).xxx);
+  float3 res = (0.785398185f).xxx;
 }
 
 struct tint_symbol {

test/tint/builtins/gen/literal/atan2/a70d0d.wgsl.expected.fxc.hlsl

@@ -1,5 +1,5 @@
 void atan2_a70d0d() {
-  float3 res = atan2((1.0f).xxx, (1.0f).xxx);
+  float3 res = (0.785398185f).xxx;
 }
 
 struct tint_symbol {

test/tint/builtins/gen/literal/atan2/a70d0d.wgsl.expected.glsl

@@ -1,7 +1,7 @@
 #version 310 es
 
 void atan2_a70d0d() {
-  vec3 res = atan(vec3(1.0f), vec3(1.0f));
+  vec3 res = vec3(0.785398185f);
 }
 
 vec4 vertex_main() {
@@ -21,7 +21,7 @@ void main() {
 precision mediump float;
 
 void atan2_a70d0d() {
-  vec3 res = atan(vec3(1.0f), vec3(1.0f));
+  vec3 res = vec3(0.785398185f);
 }
 
 void fragment_main() {
@@ -35,7 +35,7 @@ void main() {
 #version 310 es
 
 void atan2_a70d0d() {
-  vec3 res = atan(vec3(1.0f), vec3(1.0f));
+  vec3 res = vec3(0.785398185f);
 }
 
 void compute_main() {

test/tint/builtins/gen/literal/atan2/a70d0d.wgsl.expected.msl

@@ -2,7 +2,7 @@
 
 using namespace metal;
 void atan2_a70d0d() {
-  float3 res = atan2(float3(1.0f), float3(1.0f));
+  float3 res = float3(0.785398185f);
 }
 
 struct tint_symbol {

test/tint/builtins/gen/literal/atan2/a70d0d.wgsl.expected.spvasm

@@ -1,10 +1,9 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 34
+; Bound: 33
 ; Schema: 0
                OpCapability Shader
-         %15 = OpExtInstImport "GLSL.std.450"
                OpMemoryModel Logical GLSL450
                OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
                OpEntryPoint Fragment %fragment_main "fragment_main"
@@ -32,37 +31,37 @@
        %void = OpTypeVoid
           %9 = OpTypeFunction %void
     %v3float = OpTypeVector %float 3
-    %float_1 = OpConstant %float 1
-         %17 = OpConstantComposite %v3float %float_1 %float_1 %float_1
+%float_0_785398185 = OpConstant %float 0.785398185
+         %15 = OpConstantComposite %v3float %float_0_785398185 %float_0_785398185 %float_0_785398185
 %_ptr_Function_v3float = OpTypePointer Function %v3float
-         %20 = OpConstantNull %v3float
-         %21 = OpTypeFunction %v4float
+         %18 = OpConstantNull %v3float
+         %19 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
 %atan2_a70d0d = OpFunction %void None %9
          %12 = OpLabel
-        %res = OpVariable %_ptr_Function_v3float Function %20
-         %13 = OpExtInst %v3float %15 Atan2 %17 %17
-               OpStore %res %13
+        %res = OpVariable %_ptr_Function_v3float Function %18
+               OpStore %res %15
                OpReturn
                OpFunctionEnd
-%vertex_main_inner = OpFunction %v4float None %21
-         %23 = OpLabel
-         %24 = OpFunctionCall %void %atan2_a70d0d
+%vertex_main_inner = OpFunction %v4float None %19
+         %21 = OpLabel
+         %22 = OpFunctionCall %void %atan2_a70d0d
                OpReturnValue %5
                OpFunctionEnd
 %vertex_main = OpFunction %void None %9
-         %26 = OpLabel
-         %27 = OpFunctionCall %v4float %vertex_main_inner
-               OpStore %value %27
+         %24 = OpLabel
+         %25 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %25
                OpStore %vertex_point_size %float_1
                OpReturn
                OpFunctionEnd
 %fragment_main = OpFunction %void None %9
-         %29 = OpLabel
-         %30 = OpFunctionCall %void %atan2_a70d0d
+         %28 = OpLabel
+         %29 = OpFunctionCall %void %atan2_a70d0d
                OpReturn
                OpFunctionEnd
 %compute_main = OpFunction %void None %9
-         %32 = OpLabel
-         %33 = OpFunctionCall %void %atan2_a70d0d
+         %31 = OpLabel
+         %32 = OpFunctionCall %void %atan2_a70d0d
                OpReturn
                OpFunctionEnd

test/tint/builtins/gen/literal/atan2/ae713e.wgsl.expected.dxc.hlsl

@@ -1,5 +1,5 @@
 void atan2_ae713e() {
-  float4 res = atan2((1.0f).xxxx, (1.0f).xxxx);
+  float4 res = (0.785398185f).xxxx;
 }
 
 struct tint_symbol {

test/tint/builtins/gen/literal/atan2/ae713e.wgsl.expected.fxc.hlsl

@@ -1,5 +1,5 @@
 void atan2_ae713e() {
-  float4 res = atan2((1.0f).xxxx, (1.0f).xxxx);
+  float4 res = (0.785398185f).xxxx;
 }
 
 struct tint_symbol {

test/tint/builtins/gen/literal/atan2/ae713e.wgsl.expected.glsl

@@ -1,7 +1,7 @@
 #version 310 es
 
 void atan2_ae713e() {
-  vec4 res = atan(vec4(1.0f), vec4(1.0f));
+  vec4 res = vec4(0.785398185f);
 }
 
 vec4 vertex_main() {
@@ -21,7 +21,7 @@ void main() {
 precision mediump float;
 
 void atan2_ae713e() {
-  vec4 res = atan(vec4(1.0f), vec4(1.0f));
+  vec4 res = vec4(0.785398185f);
 }
 
 void fragment_main() {
@@ -35,7 +35,7 @@ void main() {
 #version 310 es
 
 void atan2_ae713e() {
-  vec4 res = atan(vec4(1.0f), vec4(1.0f));
+  vec4 res = vec4(0.785398185f);
 }
 
 void compute_main() {

test/tint/builtins/gen/literal/atan2/ae713e.wgsl.expected.msl

@@ -2,7 +2,7 @@
 
 using namespace metal;
 void atan2_ae713e() {
-  float4 res = atan2(float4(1.0f), float4(1.0f));
+  float4 res = float4(0.785398185f);
 }
 
 struct tint_symbol {

test/tint/builtins/gen/literal/atan2/ae713e.wgsl.expected.spvasm

@@ -1,10 +1,9 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 32
+; Bound: 31
 ; Schema: 0
                OpCapability Shader
-         %14 = OpExtInstImport "GLSL.std.450"
                OpMemoryModel Logical GLSL450
                OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
                OpEntryPoint Fragment %fragment_main "fragment_main"
@@ -31,36 +30,36 @@
 %vertex_point_size = OpVariable %_ptr_Output_float Output %8
        %void = OpTypeVoid
           %9 = OpTypeFunction %void
-    %float_1 = OpConstant %float 1
-         %16 = OpConstantComposite %v4float %float_1 %float_1 %float_1 %float_1
+%float_0_785398185 = OpConstant %float 0.785398185
+         %14 = OpConstantComposite %v4float %float_0_785398185 %float_0_785398185 %float_0_785398185 %float_0_785398185
 %_ptr_Function_v4float = OpTypePointer Function %v4float
-         %19 = OpTypeFunction %v4float
+         %17 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
 %atan2_ae713e = OpFunction %void None %9
          %12 = OpLabel
         %res = OpVariable %_ptr_Function_v4float Function %5
-         %13 = OpExtInst %v4float %14 Atan2 %16 %16
-               OpStore %res %13
+               OpStore %res %14
                OpReturn
                OpFunctionEnd
-%vertex_main_inner = OpFunction %v4float None %19
-         %21 = OpLabel
-         %22 = OpFunctionCall %void %atan2_ae713e
+%vertex_main_inner = OpFunction %v4float None %17
+         %19 = OpLabel
+         %20 = OpFunctionCall %void %atan2_ae713e
                OpReturnValue %5
                OpFunctionEnd
 %vertex_main = OpFunction %void None %9
-         %24 = OpLabel
-         %25 = OpFunctionCall %v4float %vertex_main_inner
-               OpStore %value %25
+         %22 = OpLabel
+         %23 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %23
                OpStore %vertex_point_size %float_1
                OpReturn
                OpFunctionEnd
 %fragment_main = OpFunction %void None %9
-         %27 = OpLabel
-         %28 = OpFunctionCall %void %atan2_ae713e
+         %26 = OpLabel
+         %27 = OpFunctionCall %void %atan2_ae713e
                OpReturn
                OpFunctionEnd
 %compute_main = OpFunction %void None %9
-         %30 = OpLabel
-         %31 = OpFunctionCall %void %atan2_ae713e
+         %29 = OpLabel
+         %30 = OpFunctionCall %void %atan2_ae713e
                OpReturn
                OpFunctionEnd

test/tint/builtins/gen/literal/atan2/c19683.wgsl

@@ -0,0 +1,43 @@
+// Copyright 2021 The Tint Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+////////////////////////////////////////////////////////////////////////////////
+// File generated by tools/src/cmd/gen
+// using the template:
+//   test/tint/builtins/gen/gen.wgsl.tmpl
+//
+// Do not modify this file directly
+////////////////////////////////////////////////////////////////////////////////
+
+
+// fn atan2(vec<2, fa>, vec<2, fa>) -> vec<2, fa>
+fn atan2_c19683() {
+  var res = atan2(vec2(1), vec2(1));
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  atan2_c19683();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  atan2_c19683();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  atan2_c19683();
+}

test/tint/builtins/gen/literal/atan2/c19683.wgsl.expected.dxc.hlsl

@@ -0,0 +1,30 @@
+void atan2_c19683() {
+  float2 res = (0.785398185f).xx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  atan2_c19683();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  atan2_c19683();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  atan2_c19683();
+  return;
+}

test/tint/builtins/gen/literal/atan2/c19683.wgsl.expected.fxc.hlsl

@@ -0,0 +1,30 @@
+void atan2_c19683() {
+  float2 res = (0.785398185f).xx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  atan2_c19683();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  atan2_c19683();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  atan2_c19683();
+  return;
+}

test/tint/builtins/gen/literal/atan2/c19683.wgsl.expected.glsl

@@ -0,0 +1,49 @@
+#version 310 es
+
+void atan2_c19683() {
+  vec2 res = vec2(0.785398185f);
+}
+
+vec4 vertex_main() {
+  atan2_c19683();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void atan2_c19683() {
+  vec2 res = vec2(0.785398185f);
+}
+
+void fragment_main() {
+  atan2_c19683();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void atan2_c19683() {
+  vec2 res = vec2(0.785398185f);
+}
+
+void compute_main() {
+  atan2_c19683();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}

test/tint/builtins/gen/literal/atan2/c19683.wgsl.expected.msl

@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void atan2_c19683() {
+  float2 res = float2(0.785398185f);
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  atan2_c19683();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  atan2_c19683();
+  return;
+}
+
+kernel void compute_main() {
+  atan2_c19683();
+  return;
+}
+

test/tint/builtins/gen/literal/atan2/c19683.wgsl.expected.spvasm

@@ -0,0 +1,67 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 33
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %atan2_c19683 "atan2_c19683"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+    %v2float = OpTypeVector %float 2
+%float_0_785398185 = OpConstant %float 0.785398185
+         %15 = OpConstantComposite %v2float %float_0_785398185 %float_0_785398185
+%_ptr_Function_v2float = OpTypePointer Function %v2float
+         %18 = OpConstantNull %v2float
+         %19 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
+%atan2_c19683 = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_v2float Function %18
+               OpStore %res %15
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %19
+         %21 = OpLabel
+         %22 = OpFunctionCall %void %atan2_c19683
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %24 = OpLabel
+         %25 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %25
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %28 = OpLabel
+         %29 = OpFunctionCall %void %atan2_c19683
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %31 = OpLabel
+         %32 = OpFunctionCall %void %atan2_c19683
+               OpReturn
+               OpFunctionEnd

test/tint/builtins/gen/literal/atan2/c19683.wgsl.expected.wgsl

@@ -0,0 +1,19 @@
+fn atan2_c19683() {
+  var res = atan2(vec2(1), vec2(1));
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  atan2_c19683();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  atan2_c19683();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  atan2_c19683();
+}

test/tint/builtins/gen/literal/atan2/c4be45.wgsl

@@ -0,0 +1,43 @@
+// Copyright 2021 The Tint Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+////////////////////////////////////////////////////////////////////////////////
+// File generated by tools/src/cmd/gen
+// using the template:
+//   test/tint/builtins/gen/gen.wgsl.tmpl
+//
+// Do not modify this file directly
+////////////////////////////////////////////////////////////////////////////////
+
+
+// fn atan2(vec<4, fa>, vec<4, fa>) -> vec<4, fa>
+fn atan2_c4be45() {
+  var res = atan2(vec4(1), vec4(1));
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  atan2_c4be45();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  atan2_c4be45();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  atan2_c4be45();
+}

test/tint/builtins/gen/literal/atan2/c4be45.wgsl.expected.dxc.hlsl

@@ -0,0 +1,30 @@
+void atan2_c4be45() {
+  float4 res = (0.785398185f).xxxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  atan2_c4be45();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  atan2_c4be45();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  atan2_c4be45();
+  return;
+}

test/tint/builtins/gen/literal/atan2/c4be45.wgsl.expected.fxc.hlsl

@@ -0,0 +1,30 @@
+void atan2_c4be45() {
+  float4 res = (0.785398185f).xxxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  atan2_c4be45();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  atan2_c4be45();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  atan2_c4be45();
+  return;
+}

test/tint/builtins/gen/literal/atan2/c4be45.wgsl.expected.glsl

@@ -0,0 +1,49 @@
+#version 310 es
+
+void atan2_c4be45() {
+  vec4 res = vec4(0.785398185f);
+}
+
+vec4 vertex_main() {
+  atan2_c4be45();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void atan2_c4be45() {
+  vec4 res = vec4(0.785398185f);
+}
+
+void fragment_main() {
+  atan2_c4be45();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void atan2_c4be45() {
+  vec4 res = vec4(0.785398185f);
+}
+
+void compute_main() {
+  atan2_c4be45();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}

test/tint/builtins/gen/literal/atan2/c4be45.wgsl.expected.msl

@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void atan2_c4be45() {
+  float4 res = float4(0.785398185f);
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  atan2_c4be45();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  atan2_c4be45();
+  return;
+}
+
+kernel void compute_main() {
+  atan2_c4be45();
+  return;
+}
+

test/tint/builtins/gen/literal/atan2/c4be45.wgsl.expected.spvasm

@@ -0,0 +1,65 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 31
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %atan2_c4be45 "atan2_c4be45"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+%float_0_785398185 = OpConstant %float 0.785398185
+         %14 = OpConstantComposite %v4float %float_0_785398185 %float_0_785398185 %float_0_785398185 %float_0_785398185
+%_ptr_Function_v4float = OpTypePointer Function %v4float
+         %17 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
+%atan2_c4be45 = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_v4float Function %5
+               OpStore %res %14
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %17
+         %19 = OpLabel
+         %20 = OpFunctionCall %void %atan2_c4be45
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %22 = OpLabel
+         %23 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %23
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %26 = OpLabel
+         %27 = OpFunctionCall %void %atan2_c4be45
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %29 = OpLabel
+         %30 = OpFunctionCall %void %atan2_c4be45
+               OpReturn
+               OpFunctionEnd

test/tint/builtins/gen/literal/atan2/c4be45.wgsl.expected.wgsl

@@ -0,0 +1,19 @@
+fn atan2_c4be45() {
+  var res = atan2(vec4(1), vec4(1));
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  atan2_c4be45();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  atan2_c4be45();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  atan2_c4be45();
+}

test/tint/builtins/gen/var/atan2/034ace.wgsl

@@ -0,0 +1,45 @@
+// Copyright 2021 The Tint Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+////////////////////////////////////////////////////////////////////////////////
+// File generated by tools/src/cmd/gen
+// using the template:
+//   test/tint/builtins/gen/gen.wgsl.tmpl
+//
+// Do not modify this file directly
+////////////////////////////////////////////////////////////////////////////////
+
+
+// fn atan2(fa, fa) -> fa
+fn atan2_034ace() {
+  const arg_0 = 1;
+  const arg_1 = 1;
+  var res = atan2(arg_0, arg_1);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  atan2_034ace();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  atan2_034ace();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  atan2_034ace();
+}

test/tint/builtins/gen/var/atan2/034ace.wgsl.expected.dxc.hlsl

@@ -0,0 +1,30 @@
+void atan2_034ace() {
+  float res = 0.785398185f;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  atan2_034ace();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  atan2_034ace();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  atan2_034ace();
+  return;
+}

test/tint/builtins/gen/var/atan2/034ace.wgsl.expected.fxc.hlsl

@@ -0,0 +1,30 @@
+void atan2_034ace() {
+  float res = 0.785398185f;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  atan2_034ace();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  atan2_034ace();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  atan2_034ace();
+  return;
+}

test/tint/builtins/gen/var/atan2/034ace.wgsl.expected.glsl

@@ -0,0 +1,49 @@
+#version 310 es
+
+void atan2_034ace() {
+  float res = 0.785398185f;
+}
+
+vec4 vertex_main() {
+  atan2_034ace();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void atan2_034ace() {
+  float res = 0.785398185f;
+}
+
+void fragment_main() {
+  atan2_034ace();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void atan2_034ace() {
+  float res = 0.785398185f;
+}
+
+void compute_main() {
+  atan2_034ace();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}

test/tint/builtins/gen/var/atan2/034ace.wgsl.expected.msl

@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void atan2_034ace() {
+  float res = 0.785398185f;
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  atan2_034ace();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  atan2_034ace();
+  return;
+}
+
+kernel void compute_main() {
+  atan2_034ace();
+  return;
+}
+

test/tint/builtins/gen/var/atan2/034ace.wgsl.expected.spvasm

@@ -0,0 +1,64 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 30
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %atan2_034ace "atan2_034ace"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+%float_0_785398185 = OpConstant %float 0.785398185
+%_ptr_Function_float = OpTypePointer Function %float
+         %16 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
+%atan2_034ace = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_float Function %8
+               OpStore %res %float_0_785398185
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %16
+         %18 = OpLabel
+         %19 = OpFunctionCall %void %atan2_034ace
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %21 = OpLabel
+         %22 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %22
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %25 = OpLabel
+         %26 = OpFunctionCall %void %atan2_034ace
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %28 = OpLabel
+         %29 = OpFunctionCall %void %atan2_034ace
+               OpReturn
+               OpFunctionEnd

test/tint/builtins/gen/var/atan2/034ace.wgsl.expected.wgsl

@@ -0,0 +1,21 @@
+fn atan2_034ace() {
+  const arg_0 = 1;
+  const arg_1 = 1;
+  var res = atan2(arg_0, arg_1);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  atan2_034ace();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  atan2_034ace();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  atan2_034ace();
+}

test/tint/builtins/gen/var/atan2/3c2865.wgsl

@@ -0,0 +1,45 @@
+// Copyright 2021 The Tint Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+////////////////////////////////////////////////////////////////////////////////
+// File generated by tools/src/cmd/gen
+// using the template:
+//   test/tint/builtins/gen/gen.wgsl.tmpl
+//
+// Do not modify this file directly
+////////////////////////////////////////////////////////////////////////////////
+
+
+// fn atan2(vec<3, fa>, vec<3, fa>) -> vec<3, fa>
+fn atan2_3c2865() {
+  const arg_0 = vec3(1);
+  const arg_1 = vec3(1);
+  var res = atan2(arg_0, arg_1);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  atan2_3c2865();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  atan2_3c2865();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  atan2_3c2865();
+}

test/tint/builtins/gen/var/atan2/3c2865.wgsl.expected.dxc.hlsl

@@ -0,0 +1,30 @@
+void atan2_3c2865() {
+  float3 res = (0.785398185f).xxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  atan2_3c2865();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  atan2_3c2865();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  atan2_3c2865();
+  return;
+}

test/tint/builtins/gen/var/atan2/3c2865.wgsl.expected.fxc.hlsl

@@ -0,0 +1,30 @@
+void atan2_3c2865() {
+  float3 res = (0.785398185f).xxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  atan2_3c2865();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  atan2_3c2865();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  atan2_3c2865();
+  return;
+}

test/tint/builtins/gen/var/atan2/3c2865.wgsl.expected.glsl

@@ -0,0 +1,49 @@
+#version 310 es
+
+void atan2_3c2865() {
+  vec3 res = vec3(0.785398185f);
+}
+
+vec4 vertex_main() {
+  atan2_3c2865();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void atan2_3c2865() {
+  vec3 res = vec3(0.785398185f);
+}
+
+void fragment_main() {
+  atan2_3c2865();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void atan2_3c2865() {
+  vec3 res = vec3(0.785398185f);
+}
+
+void compute_main() {
+  atan2_3c2865();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}

test/tint/builtins/gen/var/atan2/3c2865.wgsl.expected.msl

@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void atan2_3c2865() {
+  float3 res = float3(0.785398185f);
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  atan2_3c2865();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  atan2_3c2865();
+  return;
+}
+
+kernel void compute_main() {
+  atan2_3c2865();
+  return;
+}
+

test/tint/builtins/gen/var/atan2/3c2865.wgsl.expected.spvasm

@@ -0,0 +1,67 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 33
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %atan2_3c2865 "atan2_3c2865"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+    %v3float = OpTypeVector %float 3
+%float_0_785398185 = OpConstant %float 0.785398185
+         %15 = OpConstantComposite %v3float %float_0_785398185 %float_0_785398185 %float_0_785398185
+%_ptr_Function_v3float = OpTypePointer Function %v3float
+         %18 = OpConstantNull %v3float
+         %19 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
+%atan2_3c2865 = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_v3float Function %18
+               OpStore %res %15
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %19
+         %21 = OpLabel
+         %22 = OpFunctionCall %void %atan2_3c2865
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %24 = OpLabel
+         %25 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %25
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %28 = OpLabel
+         %29 = OpFunctionCall %void %atan2_3c2865
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %31 = OpLabel
+         %32 = OpFunctionCall %void %atan2_3c2865
+               OpReturn
+               OpFunctionEnd

test/tint/builtins/gen/var/atan2/3c2865.wgsl.expected.wgsl

@@ -0,0 +1,21 @@
+fn atan2_3c2865() {
+  const arg_0 = vec3(1);
+  const arg_1 = vec3(1);
+  var res = atan2(arg_0, arg_1);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  atan2_3c2865();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  atan2_3c2865();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  atan2_3c2865();
+}

test/tint/builtins/gen/var/atan2/c19683.wgsl

@@ -0,0 +1,45 @@
+// Copyright 2021 The Tint Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+////////////////////////////////////////////////////////////////////////////////
+// File generated by tools/src/cmd/gen
+// using the template:
+//   test/tint/builtins/gen/gen.wgsl.tmpl
+//
+// Do not modify this file directly
+////////////////////////////////////////////////////////////////////////////////
+
+
+// fn atan2(vec<2, fa>, vec<2, fa>) -> vec<2, fa>
+fn atan2_c19683() {
+  const arg_0 = vec2(1);
+  const arg_1 = vec2(1);
+  var res = atan2(arg_0, arg_1);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  atan2_c19683();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  atan2_c19683();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  atan2_c19683();
+}

test/tint/builtins/gen/var/atan2/c19683.wgsl.expected.dxc.hlsl

@@ -0,0 +1,30 @@
+void atan2_c19683() {
+  float2 res = (0.785398185f).xx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  atan2_c19683();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  atan2_c19683();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  atan2_c19683();
+  return;
+}

test/tint/builtins/gen/var/atan2/c19683.wgsl.expected.fxc.hlsl

@@ -0,0 +1,30 @@
+void atan2_c19683() {
+  float2 res = (0.785398185f).xx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  atan2_c19683();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  atan2_c19683();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  atan2_c19683();
+  return;
+}

test/tint/builtins/gen/var/atan2/c19683.wgsl.expected.glsl

@@ -0,0 +1,49 @@
+#version 310 es
+
+void atan2_c19683() {
+  vec2 res = vec2(0.785398185f);
+}
+
+vec4 vertex_main() {
+  atan2_c19683();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void atan2_c19683() {
+  vec2 res = vec2(0.785398185f);
+}
+
+void fragment_main() {
+  atan2_c19683();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void atan2_c19683() {
+  vec2 res = vec2(0.785398185f);
+}
+
+void compute_main() {
+  atan2_c19683();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}

test/tint/builtins/gen/var/atan2/c19683.wgsl.expected.msl

@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void atan2_c19683() {
+  float2 res = float2(0.785398185f);
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  atan2_c19683();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  atan2_c19683();
+  return;
+}
+
+kernel void compute_main() {
+  atan2_c19683();
+  return;
+}
+

test/tint/builtins/gen/var/atan2/c19683.wgsl.expected.spvasm

@@ -0,0 +1,67 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 33
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %atan2_c19683 "atan2_c19683"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+    %v2float = OpTypeVector %float 2
+%float_0_785398185 = OpConstant %float 0.785398185
+         %15 = OpConstantComposite %v2float %float_0_785398185 %float_0_785398185
+%_ptr_Function_v2float = OpTypePointer Function %v2float
+         %18 = OpConstantNull %v2float
+         %19 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
+%atan2_c19683 = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_v2float Function %18
+               OpStore %res %15
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %19
+         %21 = OpLabel
+         %22 = OpFunctionCall %void %atan2_c19683
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %24 = OpLabel
+         %25 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %25
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %28 = OpLabel
+         %29 = OpFunctionCall %void %atan2_c19683
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %31 = OpLabel
+         %32 = OpFunctionCall %void %atan2_c19683
+               OpReturn
+               OpFunctionEnd

test/tint/builtins/gen/var/atan2/c19683.wgsl.expected.wgsl

@@ -0,0 +1,21 @@
+fn atan2_c19683() {
+  const arg_0 = vec2(1);
+  const arg_1 = vec2(1);
+  var res = atan2(arg_0, arg_1);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  atan2_c19683();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  atan2_c19683();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  atan2_c19683();
+}

test/tint/builtins/gen/var/atan2/c4be45.wgsl

@@ -0,0 +1,45 @@
+// Copyright 2021 The Tint Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+////////////////////////////////////////////////////////////////////////////////
+// File generated by tools/src/cmd/gen
+// using the template:
+//   test/tint/builtins/gen/gen.wgsl.tmpl
+//
+// Do not modify this file directly
+////////////////////////////////////////////////////////////////////////////////
+
+
+// fn atan2(vec<4, fa>, vec<4, fa>) -> vec<4, fa>
+fn atan2_c4be45() {
+  const arg_0 = vec4(1);
+  const arg_1 = vec4(1);
+  var res = atan2(arg_0, arg_1);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  atan2_c4be45();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  atan2_c4be45();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  atan2_c4be45();
+}

test/tint/builtins/gen/var/atan2/c4be45.wgsl.expected.dxc.hlsl

@@ -0,0 +1,30 @@
+void atan2_c4be45() {
+  float4 res = (0.785398185f).xxxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  atan2_c4be45();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  atan2_c4be45();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  atan2_c4be45();
+  return;
+}

test/tint/builtins/gen/var/atan2/c4be45.wgsl.expected.fxc.hlsl

@@ -0,0 +1,30 @@
+void atan2_c4be45() {
+  float4 res = (0.785398185f).xxxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  atan2_c4be45();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  atan2_c4be45();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  atan2_c4be45();
+  return;
+}

test/tint/builtins/gen/var/atan2/c4be45.wgsl.expected.glsl

@@ -0,0 +1,49 @@
+#version 310 es
+
+void atan2_c4be45() {
+  vec4 res = vec4(0.785398185f);
+}
+
+vec4 vertex_main() {
+  atan2_c4be45();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void atan2_c4be45() {
+  vec4 res = vec4(0.785398185f);
+}
+
+void fragment_main() {
+  atan2_c4be45();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void atan2_c4be45() {
+  vec4 res = vec4(0.785398185f);
+}
+
+void compute_main() {
+  atan2_c4be45();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}

test/tint/builtins/gen/var/atan2/c4be45.wgsl.expected.msl

@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void atan2_c4be45() {
+  float4 res = float4(0.785398185f);
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  atan2_c4be45();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  atan2_c4be45();
+  return;
+}
+
+kernel void compute_main() {
+  atan2_c4be45();
+  return;
+}
+

test/tint/builtins/gen/var/atan2/c4be45.wgsl.expected.spvasm

@@ -0,0 +1,65 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 31
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %atan2_c4be45 "atan2_c4be45"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+%float_0_785398185 = OpConstant %float 0.785398185
+         %14 = OpConstantComposite %v4float %float_0_785398185 %float_0_785398185 %float_0_785398185 %float_0_785398185
+%_ptr_Function_v4float = OpTypePointer Function %v4float
+         %17 = OpTypeFunction %v4float
+    %float_1 = OpConstant %float 1
+%atan2_c4be45 = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_v4float Function %5
+               OpStore %res %14
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %17
+         %19 = OpLabel
+         %20 = OpFunctionCall %void %atan2_c4be45
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %22 = OpLabel
+         %23 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %23
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %26 = OpLabel
+         %27 = OpFunctionCall %void %atan2_c4be45
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %29 = OpLabel
+         %30 = OpFunctionCall %void %atan2_c4be45
+               OpReturn
+               OpFunctionEnd

test/tint/builtins/gen/var/atan2/c4be45.wgsl.expected.wgsl

@@ -0,0 +1,21 @@
+fn atan2_c4be45() {
+  const arg_0 = vec4(1);
+  const arg_1 = vec4(1);
+  var res = atan2(arg_0, arg_1);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  atan2_c4be45();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  atan2_c4be45();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  atan2_c4be45();
+}