[clang] [Clang] Make `-Xarch_` handling generic for all toolchains (PR #125421)

[Joseph Huber via cfe-commits]

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+// RUN: %clang -x cuda %s -Xarch_nvptx64 -O3 -S -nogpulib -nogpuinc -### 2>&1 | FileCheck -check-prefix=O3ONCE %s
+// RUN: %clang -x cuda %s -Xarch_device -O3 -S -nogpulib -nogpuinc -### 2>&1 | FileCheck -check-prefix=O3ONCE %s
+// RUN: %clang -x hip %s -Xarch_amdgcn -O3 -S -nogpulib -nogpuinc -### 2>&1 | FileCheck -check-prefix=O3ONCE %s
+// RUN: %clang -fopenmp -fopenmp-targets=amdgcn-amd-amdhsa -nogpulib -nogpuinc \
+// RUN:   -Xarch_amdgcn -march=gfx90a -Xarch_amdgcn -O3 -S -### %s 2>&1 \
+// RUN: | FileCheck -check-prefix=O3ONCE %s
+// RUN: %clang -fopenmp -fopenmp-targets=nvptx64-nvidia-cuda -nogpulib -nogpuinc \
+// RUN:   -Xarch_nvptx64 -march=sm_52 -Xarch_nvptx64 -O3 -S -### %s 2>&1 \
+// RUN: | FileCheck -check-prefix=O3ONCE %s
+// O3ONCE: "-O3"
+// O3ONCE-NOT: "-O3"
+
+// RUN: %clang -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda,amdgcn-amd-amdhsa -nogpulib \
+// RUN:   --target=x86_64-unknown-linux-gnu -Xarch_nvptx64 --offload-arch=sm_52,sm_60 -nogpuinc \
+// RUN:   -Xarch_amdgcn --offload-arch=gfx90a,gfx1030 -ccc-print-bindings -### %s 2>&1 \
+// RUN: | FileCheck -check-prefix=OPENMP %s
+//
+// OPENMP: # "x86_64-unknown-linux-gnu" - "clang", inputs: ["[[INPUT:.+]]"], output: "[[HOST_BC:.+]]"
+// OPENMP: # "amdgcn-amd-amdhsa" - "clang", inputs: ["[[INPUT]]", "[[HOST_BC]]"], output: "[[GFX1030_BC:.+]]"
+// OPENMP: # "amdgcn-amd-amdhsa" - "clang", inputs: ["[[INPUT]]", "[[HOST_BC]]"], output: "[[GFX90A_BC:.+]]"
+// OPENMP: # "nvptx64-nvidia-cuda" - "clang", inputs: ["[[INPUT]]", "[[HOST_BC]]"], output: "[[SM52_PTX:.+]]"
+// OPENMP: # "nvptx64-nvidia-cuda" - "NVPTX::Assembler", inputs: ["[[SM52_PTX]]"], output: "[[SM52_CUBIN:.+]]"
+// OPENMP: # "nvptx64-nvidia-cuda" - "clang", inputs: ["[[INPUT]]", "[[HOST_BC]]"], output: "[[SM60_PTX:.+]]"
+// OPENMP: # "nvptx64-nvidia-cuda" - "NVPTX::Assembler", inputs: ["[[SM60_PTX]]"], output: "[[SM60_CUBIN:.+]]"
+// OPENMP: # "x86_64-unknown-linux-gnu" - "Offload::Packager", inputs: ["[[GFX1030_BC]]", "[[GFX90A_BC]]", "[[SM52_CUBIN]]", "[[SM60_CUBIN]]"], output: "[[BINARY:.+]]"
+// OPENMP: # "x86_64-unknown-linux-gnu" - "clang", inputs: ["[[HOST_BC]]", "[[BINARY]]"], output: "[[HOST_OBJ:.+]]"
+// OPENMP: # "x86_64-unknown-linux-gnu" - "Offload::Linker", inputs: ["[[HOST_OBJ]]"], output: "a.out"
+
+// RUN: %clang -x cuda %s --offload-arch=sm_52,sm_60 -Xarch_sm_52 -O3 -Xarch_sm_60 -O0 \
+// RUN:   --target=x86_64-unknown-linux-gnu -Xarch_host -O3 -S -nogpulib -nogpuinc -### 2>&1 \
+// RUN: | FileCheck -check-prefix=CUDA %s
+// CUDA: "-cc1" "-triple" "nvptx64-nvidia-cuda" {{.*}}"-target-cpu" "sm_52" {{.*}}"-O3"
+// CUDA: "-cc1" "-triple" "nvptx64-nvidia-cuda" {{.*}}"-target-cpu" "sm_60" {{.*}}"-O0"
+// CUDA: "-cc1" "-triple" "x86_64-unknown-linux-gnu" {{.*}}"-O3"
+
+// RUN: %clang -x cuda %s -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda \
+// RUN:   -Xarch_sm_52 --offload-arch=sm_52 -S -nogpulib -nogpuinc -### 2>&1 \
+// RUN: | FileCheck -check-prefix=SPECIFIC %s
+// SPECIFIC: "-cc1" "-triple" "nvptx64-nvidia-cuda" {{.*}}"-target-cpu" "sm_52"
+
+// RUN: %clang -x cuda %s -nogpulib -nogpuinc \
+// RUN:   -Xarch_sm_51 --offload-arch=sm_52 -S -### 2>&1 \
+// RUN: | FileCheck -check-prefix=SPECIFIC-WARN %s
+// SPECIFIC-WARN: warning: argument unused during compilation: '-Xarch_sm_51 --offload-arch=sm_52'
----------------
jhuber6 wrote:

In this case, `--offload-arch=sm_52` would enable `sm_52` as a bound job, then it would make `-Xarch-sm_52` enable `--offload-arch=sm_80` but by the time it sees that the list was already generated so it wouldn't do anything.

https://github.com/llvm/llvm-project/pull/125421