tint: remove LoopToForLoop and FoldTrivialSingleUseLets transforms for HLSL and GLSL

Change-Id: I18c807b2449dc2842cb9dbfaeba98dae640d2355
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/102621
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>

test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/f16.wgsl.expected.dxc.hlsl

@@ -1,5 +1,7 @@
 [numthreads(1, 1, 1)]
 void f() {
-  const float16_t r = (float16_t(1.0h) % float16_t(0.0h));
+  const float16_t a = float16_t(1.0h);
+  const float16_t b = float16_t(0.0h);
+  const float16_t r = (a % b);
   return;
 }

test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/f16.wgsl.expected.glsl

@@ -7,7 +7,9 @@ float16_t tint_float_modulo(float16_t lhs, float16_t rhs) {
 
 
 void f() {
-  float16_t r = tint_float_modulo(1.0hf, 0.0hf);
+  float16_t a = 1.0hf;
+  float16_t b = 0.0hf;
+  float16_t r = tint_float_modulo(a, b);
 }
 
 layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;

test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/f32.wgsl.expected.dxc.hlsl

@@ -1,5 +1,7 @@
 [numthreads(1, 1, 1)]
 void f() {
-  const float r = (1.0f % 0.0f);
+  const float a = 1.0f;
+  const float b = 0.0f;
+  const float r = (a % b);
   return;
 }

test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/f32.wgsl.expected.fxc.hlsl

@@ -1,5 +1,7 @@
 [numthreads(1, 1, 1)]
 void f() {
-  const float r = (1.0f % 0.0f);
+  const float a = 1.0f;
+  const float b = 0.0f;
+  const float r = (a % b);
   return;
 }

test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/f32.wgsl.expected.glsl

@@ -6,7 +6,9 @@ float tint_float_modulo(float lhs, float rhs) {
 
 
 void f() {
-  float r = tint_float_modulo(1.0f, 0.0f);
+  float a = 1.0f;
+  float b = 0.0f;
+  float r = tint_float_modulo(a, b);
 }
 
 layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;

test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/i32.wgsl.expected.dxc.hlsl

@@ -1,5 +1,7 @@
 [numthreads(1, 1, 1)]
 void f() {
-  const int r = (1 % 1);
+  const int a = 1;
+  const int b = 0;
+  const int r = (a % (b == 0 ? 1 : b));
   return;
 }

test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/i32.wgsl.expected.fxc.hlsl

@@ -1,5 +1,7 @@
 [numthreads(1, 1, 1)]
 void f() {
-  const int r = (1 % 1);
+  const int a = 1;
+  const int b = 0;
+  const int r = (a % (b == 0 ? 1 : b));
   return;
 }

test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/i32.wgsl.expected.glsl

@@ -1,7 +1,9 @@
 #version 310 es
 
 void f() {
-  int r = (1 % 0);
+  int a = 1;
+  int b = 0;
+  int r = (a % b);
 }
 
 layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;

test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/u32.wgsl.expected.dxc.hlsl

@@ -1,5 +1,7 @@
 [numthreads(1, 1, 1)]
 void f() {
-  const uint r = (1u % 1u);
+  const uint a = 1u;
+  const uint b = 0u;
+  const uint r = (a % (b == 0u ? 1u : b));
   return;
 }

test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/u32.wgsl.expected.fxc.hlsl

@@ -1,5 +1,7 @@
 [numthreads(1, 1, 1)]
 void f() {
-  const uint r = (1u % 1u);
+  const uint a = 1u;
+  const uint b = 0u;
+  const uint r = (a % (b == 0u ? 1u : b));
   return;
 }

test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/u32.wgsl.expected.glsl

@@ -1,7 +1,9 @@
 #version 310 es
 
 void f() {
-  uint r = (1u % 0u);
+  uint a = 1u;
+  uint b = 0u;
+  uint r = (a % b);
 }
 
 layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;

test/tint/expressions/binary/mod_by_zero/by_constant/vec3-scalar/i32.wgsl.expected.dxc.hlsl

@@ -1,6 +1,7 @@
 [numthreads(1, 1, 1)]
 void f() {
   const int3 a = int3(1, 2, 3);
-  const int3 r = (a % 1);
+  const int b = 0;
+  const int3 r = (a % (b == 0 ? 1 : b));
   return;
 }

test/tint/expressions/binary/mod_by_zero/by_constant/vec3-scalar/i32.wgsl.expected.fxc.hlsl

@@ -1,6 +1,7 @@
 [numthreads(1, 1, 1)]
 void f() {
   const int3 a = int3(1, 2, 3);
-  const int3 r = (a % 1);
+  const int b = 0;
+  const int3 r = (a % (b == 0 ? 1 : b));
   return;
 }

test/tint/expressions/binary/mod_by_zero/by_constant/vec3-scalar/i32.wgsl.expected.glsl

@@ -2,7 +2,8 @@
 
 void f() {
   ivec3 a = ivec3(1, 2, 3);
-  ivec3 r = (a % 0);
+  int b = 0;
+  ivec3 r = (a % b);
 }
 
 layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;

test/tint/expressions/binary/mod_by_zero/by_constant/vec3-scalar/u32.wgsl.expected.dxc.hlsl

@@ -1,6 +1,7 @@
 [numthreads(1, 1, 1)]
 void f() {
   const uint3 a = uint3(1u, 2u, 3u);
-  const uint3 r = (a % 1u);
+  const uint b = 0u;
+  const uint3 r = (a % (b == 0u ? 1u : b));
   return;
 }

test/tint/expressions/binary/mod_by_zero/by_constant/vec3-scalar/u32.wgsl.expected.fxc.hlsl

@@ -1,6 +1,7 @@
 [numthreads(1, 1, 1)]
 void f() {
   const uint3 a = uint3(1u, 2u, 3u);
-  const uint3 r = (a % 1u);
+  const uint b = 0u;
+  const uint3 r = (a % (b == 0u ? 1u : b));
   return;
 }

test/tint/expressions/binary/mod_by_zero/by_constant/vec3-scalar/u32.wgsl.expected.glsl

@@ -2,7 +2,8 @@
 
 void f() {
   uvec3 a = uvec3(1u, 2u, 3u);
-  uvec3 r = (a % 0u);
+  uint b = 0u;
+  uvec3 r = (a % b);
 }
 
 layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;