tint->dawn: Shuffle source tree in preperation of merging repos

docs/    -> docs/tint/
fuzzers/ -> src/tint/fuzzers/
samples/ -> src/tint/cmd/
src/     -> src/tint/
test/    -> test/tint/

BUG=tint:1418,tint:1433

Change-Id: Id2aa79f989aef3245b80ef4aa37a27ff16cd700b
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/80482
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>

test/tint/shadowing/function/let.wgsl

@@ -0,0 +1,8 @@
+fn a() {
+  {
+    var a = 1;
+    var b = a;
+  }
+  let a = 1;
+  let b = a;
+}

test/tint/shadowing/function/let.wgsl.expected.glsl

@@ -0,0 +1,14 @@
+#version 310 es
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void unused_entry_point() {
+  return;
+}
+void a() {
+  {
+    int a_1 = 1;
+    int b = a_1;
+  }
+  int b = 1;
+}
+

test/tint/shadowing/function/let.wgsl.expected.hlsl

@@ -0,0 +1,12 @@
+[numthreads(1, 1, 1)]
+void unused_entry_point() {
+  return;
+}
+
+void a() {
+  {
+    int a_1 = 1;
+    int b = a_1;
+  }
+  const int b = 1;
+}

test/tint/shadowing/function/let.wgsl.expected.msl

@@ -0,0 +1,12 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void a() {
+  {
+    int a_1 = 1;
+    int b = a_1;
+  }
+  int const a_2 = 1;
+  int const b = a_2;
+}
+

test/tint/shadowing/function/let.wgsl.expected.spvasm

@@ -0,0 +1,32 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 14
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint GLCompute %unused_entry_point "unused_entry_point"
+               OpExecutionMode %unused_entry_point LocalSize 1 1 1
+               OpName %unused_entry_point "unused_entry_point"
+               OpName %a "a"
+               OpName %a_1 "a_1"
+               OpName %b "b"
+       %void = OpTypeVoid
+          %1 = OpTypeFunction %void
+        %int = OpTypeInt 32 1
+      %int_1 = OpConstant %int 1
+%_ptr_Function_int = OpTypePointer Function %int
+         %11 = OpConstantNull %int
+%unused_entry_point = OpFunction %void None %1
+          %4 = OpLabel
+               OpReturn
+               OpFunctionEnd
+          %a = OpFunction %void None %1
+          %6 = OpLabel
+        %a_1 = OpVariable %_ptr_Function_int Function %11
+          %b = OpVariable %_ptr_Function_int Function %11
+               OpStore %a_1 %int_1
+         %12 = OpLoad %int %a_1
+               OpStore %b %12
+               OpReturn
+               OpFunctionEnd

test/tint/shadowing/function/let.wgsl.expected.wgsl

@@ -0,0 +1,8 @@
+fn a() {
+  {
+    var a = 1;
+    var b = a;
+  }
+  let a = 1;
+  let b = a;
+}

test/tint/shadowing/function/param.wgsl

@@ -0,0 +1,3 @@
+fn a(a : i32) {
+  let b = a;
+}

test/tint/shadowing/function/param.wgsl.expected.glsl

@@ -0,0 +1,10 @@
+#version 310 es
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void unused_entry_point() {
+  return;
+}
+void a(int a_1) {
+  int b = a_1;
+}
+

test/tint/shadowing/function/param.wgsl.expected.hlsl

@@ -0,0 +1,8 @@
+[numthreads(1, 1, 1)]
+void unused_entry_point() {
+  return;
+}
+
+void a(int a_1) {
+  const int b = a_1;
+}

test/tint/shadowing/function/param.wgsl.expected.msl

@@ -0,0 +1,7 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void a(int a_1) {
+  int const b = a_1;
+}
+

test/tint/shadowing/function/param.wgsl.expected.spvasm

@@ -0,0 +1,25 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 10
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint GLCompute %unused_entry_point "unused_entry_point"
+               OpExecutionMode %unused_entry_point LocalSize 1 1 1
+               OpName %unused_entry_point "unused_entry_point"
+               OpName %a "a"
+               OpName %a_1 "a_1"
+       %void = OpTypeVoid
+          %1 = OpTypeFunction %void
+        %int = OpTypeInt 32 1
+          %5 = OpTypeFunction %void %int
+%unused_entry_point = OpFunction %void None %1
+          %4 = OpLabel
+               OpReturn
+               OpFunctionEnd
+          %a = OpFunction %void None %5
+        %a_1 = OpFunctionParameter %int
+          %9 = OpLabel
+               OpReturn
+               OpFunctionEnd

test/tint/shadowing/function/param.wgsl.expected.wgsl

@@ -0,0 +1,3 @@
+fn a(a : i32) {
+  let b = a;
+}

test/tint/shadowing/function/var.wgsl

@@ -0,0 +1,10 @@
+struct a { a : i32; };
+
+fn f() {
+  {
+    var a : a = a();
+    var b = a;
+  }
+  var a : a = a();
+  var b = a;
+}

test/tint/shadowing/function/var.wgsl.expected.glsl

@@ -0,0 +1,19 @@
+#version 310 es
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void unused_entry_point() {
+  return;
+}
+struct a {
+  int a;
+};
+
+void f() {
+  {
+    a a_1 = a(0);
+    a b = a_1;
+  }
+  a a_2 = a(0);
+  a b = a_2;
+}
+

test/tint/shadowing/function/var.wgsl.expected.hlsl

@@ -0,0 +1,17 @@
+[numthreads(1, 1, 1)]
+void unused_entry_point() {
+  return;
+}
+
+struct a {
+  int a;
+};
+
+void f() {
+  {
+    a a_1 = (a)0;
+    a b = a_1;
+  }
+  a a_2 = (a)0;
+  a b = a_2;
+}

test/tint/shadowing/function/var.wgsl.expected.msl

@@ -0,0 +1,16 @@
+#include <metal_stdlib>
+
+using namespace metal;
+struct a {
+  int a;
+};
+
+void f() {
+  {
+    a a_1 = {};
+    a b = a_1;
+  }
+  a a_2 = {};
+  a b = a_2;
+}
+

test/tint/shadowing/function/var.wgsl.expected.spvasm

@@ -0,0 +1,42 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 17
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint GLCompute %unused_entry_point "unused_entry_point"
+               OpExecutionMode %unused_entry_point LocalSize 1 1 1
+               OpName %unused_entry_point "unused_entry_point"
+               OpName %f "f"
+               OpName %a "a"
+               OpMemberName %a 0 "a"
+               OpName %a_1 "a_1"
+               OpName %b "b"
+               OpName %a_2 "a_2"
+               OpName %b_0 "b"
+               OpMemberDecorate %a 0 Offset 0
+       %void = OpTypeVoid
+          %1 = OpTypeFunction %void
+        %int = OpTypeInt 32 1
+          %a = OpTypeStruct %int
+          %9 = OpConstantNull %a
+%_ptr_Function_a = OpTypePointer Function %a
+%unused_entry_point = OpFunction %void None %1
+          %4 = OpLabel
+               OpReturn
+               OpFunctionEnd
+          %f = OpFunction %void None %1
+          %6 = OpLabel
+        %a_1 = OpVariable %_ptr_Function_a Function %9
+          %b = OpVariable %_ptr_Function_a Function %9
+        %a_2 = OpVariable %_ptr_Function_a Function %9
+        %b_0 = OpVariable %_ptr_Function_a Function %9
+               OpStore %a_1 %9
+         %12 = OpLoad %a %a_1
+               OpStore %b %12
+               OpStore %a_2 %9
+         %15 = OpLoad %a %a_2
+               OpStore %b_0 %15
+               OpReturn
+               OpFunctionEnd

test/tint/shadowing/function/var.wgsl.expected.wgsl

@@ -0,0 +1,12 @@
+struct a {
+  a : i32;
+}
+
+fn f() {
+  {
+    var a : a = a();
+    var b = a;
+  }
+  var a : a = a();
+  var b = a;
+}