llvmbot wrote:

<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang-driver

Author: Justin Bogner (bogner)

<details>
<summary>Changes</summary>

Running `clang-dxc` with textual output was emitting various spurious warnings 
(if `dxv` wasn't on your path) or errors (if it was). Avoid these by not 
attempting to run this tool when it doesn't make sense to do so.

Fixes #<!-- -->135874.

---
Full diff: https://github.com/llvm/llvm-project/pull/135876.diff


6 Files Affected:

- (modified) clang/lib/Driver/ToolChains/HLSL.cpp (+3) 
- (modified) clang/test/Driver/HLSL/metal-converter.hlsl (+6-4) 
- (modified) clang/test/Driver/dxc_D.hlsl (+1-1) 
- (modified) clang/test/Driver/dxc_dxv_path.hlsl (+3-3) 
- (modified) clang/test/Driver/dxc_options.hlsl (+1-2) 
- (modified) clang/test/Driver/hlsl-lang-targets.hlsl (+4-4) 


``````````diff
diff --git a/clang/lib/Driver/ToolChains/HLSL.cpp 
b/clang/lib/Driver/ToolChains/HLSL.cpp
index 22498bff1f251..59e9050af8a76 100644
--- a/clang/lib/Driver/ToolChains/HLSL.cpp
+++ b/clang/lib/Driver/ToolChains/HLSL.cpp
@@ -309,6 +309,9 @@ HLSLToolChain::TranslateArgs(const DerivedArgList &Args, 
StringRef BoundArch,
 }
 
 bool HLSLToolChain::requiresValidation(DerivedArgList &Args) const {
+  if (!Args.hasArg(options::OPT_dxc_Fo))
+    return false;
+
   if (Args.getLastArg(options::OPT_dxc_disable_validation))
     return false;
 
diff --git a/clang/test/Driver/HLSL/metal-converter.hlsl 
b/clang/test/Driver/HLSL/metal-converter.hlsl
index 536f24be6e73b..3c4257b3fbb28 100644
--- a/clang/test/Driver/HLSL/metal-converter.hlsl
+++ b/clang/test/Driver/HLSL/metal-converter.hlsl
@@ -1,11 +1,13 @@
-// RUN: %clang_dxc -T cs_6_0 %s -metal -Fo %t.mtl -### 2>&1 | FileCheck %s
-// RUN: %clang_dxc -T cs_6_0 %s -metal -Vd -Fo %t.mtl -### 2>&1 | FileCheck %s
-// CHECK: "{{.*}}metal-shaderconverter{{(.exe)?}}" "{{.*}}.obj" "-o" 
"{{.*}}.mtl"
+// RUN: echo "dxv" > %T/dxv && chmod 754 %T/dxv
+
+// RUN: env PATH="" %clang_dxc -T cs_6_0 %s -metal -Fo %t.mtl -### 2>&1 | 
FileCheck --check-prefix=NO_DXV %s
+// RUN: env PATH="" %clang_dxc -T cs_6_0 %s -metal -Vd -Fo %t.mtl -### 2>&1 | 
FileCheck --check-prefix=NO_DXV %s
+// RUN: env PATH="" %clang_dxc -T cs_6_0 %s --dxv-path=%T -metal -Vd -Fo 
%t.mtl -### 2>&1 | FileCheck --check-prefix=NO_DXV %s
+// NO_DXV: "{{.*}}metal-shaderconverter{{(.exe)?}}" "{{.*}}.obj" "-o" 
"{{.*}}.mtl"
 
 // RUN: %clang_dxc -T cs_6_0 %s -metal -### 2>&1 | FileCheck 
--check-prefix=NO_MTL %s
 // NO_MTL-NOT: metal-shaderconverter
 
-// RUN: echo "dxv" > %T/dxv && chmod 754 %T/dxv
 // RUN: %clang_dxc -T cs_6_0 %s --dxv-path=%T -metal -Fo %t.mtl -### 2>&1 | 
FileCheck --check-prefix=DXV %s
 // DXV: "{{.*}}dxv{{(.exe)?}}" "{{.*}}.obj" "-o" "{{.*}}.dxo"
 // DXV: "{{.*}}metal-shaderconverter{{(.exe)?}}" "{{.*}}.dxo" "-o" "{{.*}}.mtl"
diff --git a/clang/test/Driver/dxc_D.hlsl b/clang/test/Driver/dxc_D.hlsl
index f32a22c503327..5737f0a819d47 100644
--- a/clang/test/Driver/dxc_D.hlsl
+++ b/clang/test/Driver/dxc_D.hlsl
@@ -1,5 +1,5 @@
 // RUN: %clang_dxc -DTEST=2 -Tlib_6_7 -### %s 2>&1 | FileCheck %s
-// RUN: %clang_dxc -DTEST=2  -Tlib_6_7 %s -fcgl -Fo - | FileCheck %s 
--check-prefix=ERROR
+// RUN: %clang_dxc -DTEST=2  -Tlib_6_7 %s | FileCheck %s --check-prefix=ERROR
 
 // Make sure -D send to cc1.
 // CHECK:"-D" "TEST=2"
diff --git a/clang/test/Driver/dxc_dxv_path.hlsl 
b/clang/test/Driver/dxc_dxv_path.hlsl
index 55a07f34a648e..65e386f2f35ab 100644
--- a/clang/test/Driver/dxc_dxv_path.hlsl
+++ b/clang/test/Driver/dxc_dxv_path.hlsl
@@ -1,10 +1,10 @@
-// RUN: %clang_dxc -I test -Tlib_6_3  -### %s 2>&1 | FileCheck %s
+// RUN: env PATH="" %clang_dxc -I test -Tlib_6_3 -Fo %T/a.dxo  -### %s 2>&1 | 
FileCheck %s
 
 // Make sure report warning.
 // CHECK:dxv not found
 
-// RUN: echo "dxv" > %T/dxv && chmod 754 %T/dxv && %clang_dxc --dxv-path=%T %s 
-Tlib_6_3 -### 2>&1 | FileCheck %s --check-prefix=DXV_PATH
-// DXV_PATH:dxv{{(.exe)?}}" "-" "-o" "{{.*}}.dxo"
+// RUN: echo "dxv" > %T/dxv && chmod 754 %T/dxv && %clang_dxc --dxv-path=%T %s 
-Tlib_6_3 -Fo %T/a.dxo -### 2>&1 | FileCheck %s --check-prefix=DXV_PATH
+// DXV_PATH:dxv{{(.exe)?}}" "{{.*}}.obj" "-o" "{{.*}}/a.dxo"
 
 // RUN: %clang_dxc -I test -Vd -Tlib_6_3  -### %s 2>&1 | FileCheck %s 
--check-prefix=VD
 // VD:"-cc1"{{.*}}"-triple" "dxilv1.3-unknown-shadermodel6.3-library"
diff --git a/clang/test/Driver/dxc_options.hlsl 
b/clang/test/Driver/dxc_options.hlsl
index 09fdba1c3dd5f..5026b75e52688 100644
--- a/clang/test/Driver/dxc_options.hlsl
+++ b/clang/test/Driver/dxc_options.hlsl
@@ -4,5 +4,4 @@
 // RUN: -fdiagnostics-color \
 // RUN: -fno-diagnostics-color \
 // RUN: -fdiagnostics-color=auto \
-// RUN: -Tlib_6_7 -Vd -fdriver-only -- %s 2>&1 |count 0
-
+// RUN: -Tlib_6_7 -fdriver-only -- %s 2>&1 |count 0
diff --git a/clang/test/Driver/hlsl-lang-targets.hlsl 
b/clang/test/Driver/hlsl-lang-targets.hlsl
index 7ce490a66df5f..b321b00548e9b 100644
--- a/clang/test/Driver/hlsl-lang-targets.hlsl
+++ b/clang/test/Driver/hlsl-lang-targets.hlsl
@@ -2,10 +2,10 @@
 
 // Supported targets
 //
-// RUN: %clang -target dxil--shadermodel6.2-pixel %s -S -o /dev/null 2>&1 | 
FileCheck --check-prefix=CHECK-VALID %s
-// RUN: %clang -target dxil-unknown-shadermodel6.2-pixel %s -S -o /dev/null 
2>&1 | FileCheck --check-prefix=CHECK-VALID %s
-// RUN: %clang -target dxil--shadermodel6.2-library %s -S -o /dev/null 2>&1 | 
FileCheck --check-prefix=CHECK-VALID %s
-// RUN: %clang -target dxil-unknown-shadermodel6.2-library %s -S -o /dev/null 
2>&1 | FileCheck --check-prefix=CHECK-VALID %s
+// RUN: %clang -target dxil--shadermodel6.2-pixel %s -S -o /dev/null 2>&1 | 
FileCheck --allow-empty --check-prefix=CHECK-VALID %s
+// RUN: %clang -target dxil-unknown-shadermodel6.2-pixel %s -S -o /dev/null 
2>&1 | FileCheck --allow-empty --check-prefix=CHECK-VALID %s
+// RUN: %clang -target dxil--shadermodel6.2-library %s -S -o /dev/null 2>&1 | 
FileCheck --allow-empty --check-prefix=CHECK-VALID %s
+// RUN: %clang -target dxil-unknown-shadermodel6.2-library %s -S -o /dev/null 
2>&1 | FileCheck --allow-empty --check-prefix=CHECK-VALID %s
 
 // Empty shader model
 //

``````````

</details>


https://github.com/llvm/llvm-project/pull/135876
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