[clang] [HIP] Add warning for -mwavefrontsize64 on gfx10+ architectures (PR #140185)

[Artem Belevich via cfe-commits]

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@@ -67,6 +67,12 @@
 // DUP-NOT: "-target-feature" "{{.*}}wavefrontsize64"
 // DUP: {{.*}}lld{{.*}} "-plugin-opt=-mattr=+cumode"
 
+// RUN: %clang -### --target=x86_64-linux-gnu -fgpu-rdc -nogpulib \
+// RUN:   -nogpuinc --offload-arch=gfx1010 --no-offload-new-driver %s \
+// RUN:   -mno-wavefrontsize64 -mwavefrontsize64 2>&1 \
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Artem-B wrote:

Is `-mno-wavefrontsize64` used intentionally here?

https://github.com/llvm/llvm-project/pull/140185