[clang] [HIP] change default offload archs (PR #139281)

[Matt Arsenault via cfe-commits]

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@@ -1,3 +1,3 @@
 // RUN: %clang -### -nogpulib -nogpuinc -c %s 2>&1 | FileCheck %s
 
-// CHECK: {{.*}}clang{{.*}}"-target-cpu" "gfx906"
+// CHECK: {{.*}}clang{{.*}}"-triple" "{{amdgcn|spirv64}}-amd-amdhsa"{{.*}} "-target-cpu" "{{amdgcnspirv|gfx.*}}"
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arsenm wrote:

Is this relying on the default target triple? Test both cases with explicit triples?

https://github.com/llvm/llvm-project/pull/139281