tint/test-runner: Split expectations for FXC and DXC

Change tint's `--fxc` flag to take the path of the FXC compiler DLL.
Have tint attempt to validate with both FXC and DXC if `--validate` is
passed.

Fix the 'dirsWithNoPassExpectations' logic which looks like it got
broken with the tint -> dawn merge. It also incorrectly applied
filepath.FromSlash() on windows.

Change-Id: I0f46aa5c21bc48a2abc48402c41f846aff4a8633
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/96800
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Ben Clayton <bclayton@chromium.org>

test/tint/var/initialization/function/array/array_i32.wgsl.expected.fxc.hlsl

@@ -0,0 +1,8 @@
+[numthreads(1, 1, 1)]
+void main() {
+  int zero[2][3] = (int[2][3])0;
+  const int tint_symbol[3] = {1, 2, 3};
+  const int tint_symbol_1[3] = {4, 5, 6};
+  int init[2][3] = {tint_symbol, tint_symbol_1};
+  return;
+}

test/tint/var/initialization/function/array/i32.wgsl.expected.fxc.hlsl

@@ -0,0 +1,6 @@
+[numthreads(1, 1, 1)]
+void main() {
+  int zero[3] = (int[3])0;
+  int init[3] = {1, 2, 3};
+  return;
+}

test/tint/var/initialization/function/matrix.wgsl.expected.fxc.hlsl

@@ -0,0 +1,5 @@
+[numthreads(1, 1, 1)]
+void main() {
+  float2x3 v = float2x3(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
+  return;
+}

test/tint/var/initialization/function/scalar.wgsl.expected.fxc.hlsl

@@ -0,0 +1,5 @@
+[numthreads(1, 1, 1)]
+void main() {
+  int v = 0;
+  return;
+}

test/tint/var/initialization/function/struct.wgsl.expected.fxc.hlsl

@@ -0,0 +1,10 @@
+struct S {
+  int a;
+  float b;
+};
+
+[numthreads(1, 1, 1)]
+void main() {
+  S v = (S)0;
+  return;
+}

test/tint/var/initialization/function/vector.wgsl.expected.fxc.hlsl

@@ -0,0 +1,5 @@
+[numthreads(1, 1, 1)]
+void main() {
+  int3 v = int3(0, 0, 0);
+  return;
+}

test/tint/var/initialization/private/array/array_i32.wgsl.expected.fxc.hlsl

@@ -0,0 +1,9 @@
+static int zero[2][3] = (int[2][3])0;
+static int init[2][3] = {{1, 2, 3}, {4, 5, 6}};
+
+[numthreads(1, 1, 1)]
+void main() {
+  int v0[2][3] = zero;
+  int v1[2][3] = init;
+  return;
+}

test/tint/var/initialization/private/array/i32.wgsl.expected.fxc.hlsl

@@ -0,0 +1,9 @@
+static int zero[3] = (int[3])0;
+static int init[3] = {1, 2, 3};
+
+[numthreads(1, 1, 1)]
+void main() {
+  int v0[3] = zero;
+  int v1[3] = init;
+  return;
+}

test/tint/var/initialization/private/matrix.wgsl.expected.fxc.hlsl

@@ -0,0 +1,6 @@
+static float2x3 v = float2x3(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
+
+[numthreads(1, 1, 1)]
+void main() {
+  return;
+}

test/tint/var/initialization/private/scalar.wgsl.expected.fxc.hlsl

@@ -0,0 +1,6 @@
+static int v = 0;
+
+[numthreads(1, 1, 1)]
+void main() {
+  return;
+}

test/tint/var/initialization/private/struct.wgsl.expected.fxc.hlsl

@@ -0,0 +1,11 @@
+struct S {
+  int a;
+  float b;
+};
+
+static S v = (S)0;
+
+[numthreads(1, 1, 1)]
+void main() {
+  return;
+}

test/tint/var/initialization/private/vector.wgsl.expected.fxc.hlsl

@@ -0,0 +1,6 @@
+static int3 v = int3(0, 0, 0);
+
+[numthreads(1, 1, 1)]
+void main() {
+  return;
+}

test/tint/var/initialization/workgroup/array/array_i32.wgsl.expected.fxc.hlsl

@@ -0,0 +1,23 @@
+groupshared int zero[2][3];
+
+struct tint_symbol_1 {
+  uint local_invocation_index : SV_GroupIndex;
+};
+
+void main_inner(uint local_invocation_index) {
+  {
+    [loop] for(uint idx = local_invocation_index; (idx < 6u); idx = (idx + 1u)) {
+      const uint i = (idx / 3u);
+      const uint i_1 = (idx % 3u);
+      zero[i][i_1] = 0;
+    }
+  }
+  GroupMemoryBarrierWithGroupSync();
+  int v[2][3] = zero;
+}
+
+[numthreads(1, 1, 1)]
+void main(tint_symbol_1 tint_symbol) {
+  main_inner(tint_symbol.local_invocation_index);
+  return;
+}

test/tint/var/initialization/workgroup/array/i32.wgsl.expected.fxc.hlsl

@@ -0,0 +1,22 @@
+groupshared int zero[3];
+
+struct tint_symbol_1 {
+  uint local_invocation_index : SV_GroupIndex;
+};
+
+void main_inner(uint local_invocation_index) {
+  {
+    [loop] for(uint idx = local_invocation_index; (idx < 3u); idx = (idx + 1u)) {
+      const uint i = idx;
+      zero[i] = 0;
+    }
+  }
+  GroupMemoryBarrierWithGroupSync();
+  int v[3] = zero;
+}
+
+[numthreads(1, 1, 1)]
+void main(tint_symbol_1 tint_symbol) {
+  main_inner(tint_symbol.local_invocation_index);
+  return;
+}

test/tint/var/initialization/workgroup/matrix.wgsl.expected.fxc.hlsl

@@ -0,0 +1,18 @@
+groupshared float2x3 v;
+
+struct tint_symbol_1 {
+  uint local_invocation_index : SV_GroupIndex;
+};
+
+void main_inner(uint local_invocation_index) {
+  {
+    v = float2x3((0.0f).xxx, (0.0f).xxx);
+  }
+  GroupMemoryBarrierWithGroupSync();
+}
+
+[numthreads(1, 1, 1)]
+void main(tint_symbol_1 tint_symbol) {
+  main_inner(tint_symbol.local_invocation_index);
+  return;
+}

test/tint/var/initialization/workgroup/scalar.wgsl.expected.fxc.hlsl

@@ -0,0 +1,18 @@
+groupshared int v;
+
+struct tint_symbol_1 {
+  uint local_invocation_index : SV_GroupIndex;
+};
+
+void main_inner(uint local_invocation_index) {
+  {
+    v = 0;
+  }
+  GroupMemoryBarrierWithGroupSync();
+}
+
+[numthreads(1, 1, 1)]
+void main(tint_symbol_1 tint_symbol) {
+  main_inner(tint_symbol.local_invocation_index);
+  return;
+}

test/tint/var/initialization/workgroup/struct.wgsl.expected.fxc.hlsl

@@ -0,0 +1,24 @@
+struct S {
+  int a;
+  float b;
+};
+
+groupshared S v;
+
+struct tint_symbol_1 {
+  uint local_invocation_index : SV_GroupIndex;
+};
+
+void main_inner(uint local_invocation_index) {
+  {
+    const S tint_symbol_2 = (S)0;
+    v = tint_symbol_2;
+  }
+  GroupMemoryBarrierWithGroupSync();
+}
+
+[numthreads(1, 1, 1)]
+void main(tint_symbol_1 tint_symbol) {
+  main_inner(tint_symbol.local_invocation_index);
+  return;
+}

test/tint/var/initialization/workgroup/vector.wgsl.expected.fxc.hlsl

@@ -0,0 +1,18 @@
+groupshared int3 v;
+
+struct tint_symbol_1 {
+  uint local_invocation_index : SV_GroupIndex;
+};
+
+void main_inner(uint local_invocation_index) {
+  {
+    v = (0).xxx;
+  }
+  GroupMemoryBarrierWithGroupSync();
+}
+
+[numthreads(1, 1, 1)]
+void main(tint_symbol_1 tint_symbol) {
+  main_inner(tint_symbol.local_invocation_index);
+  return;
+}