[clang] [SPIRV] Add -spirv option to DXC driver (PR #65989)

[Natalie Chouinard via cfe-commits]

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@@ -2,8 +2,8 @@
 
 // Supported targets
 //
-// RUN: %clang -target dxil-unknown-shadermodel6.2-pixel %s -S -o /dev/null 2>&1 | FileCheck --check-prefix=CHECK-VALID %s
-// RUN: %clang -target spirv-unknown-shadermodel6.2-library %s -S -o /dev/null 2>&1 | FileCheck --check-prefix=CHECK-VALID %s
+// RUN: %clang -target dxil-unknown-shadermodel6.2-compute %s -S -o /dev/null 2>&1 | FileCheck --allow-empty --check-prefix=CHECK-VALID %s
+// RUN: %clang -target spirv-unknown-shadermodel6.2-compute %s -S -o /dev/null 2>&1 | FileCheck --allow-empty --check-prefix=CHECK-VALID %s
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sudonatalie wrote:

This test is actually failing at tip of tree, probably due to a change on our side where we started explicitly failing on not-yet-supported shader types, but I don't think we knew about this test or made a habit of running it so it just fell through the cracks. I can split it out into a separate patch if you'd prefer though.

https://github.com/llvm/llvm-project/pull/65989