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[clang][test][OpenMP] Fix test assumptions of libomp and clang paths #125891

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Feb 5, 2025
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[clang][test][OpenMP] Fix test assumptions of libomp and clang paths #125891

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22 changes: 11 additions & 11 deletions clang/test/Driver/amdgpu-openmp-sanitize-options.c
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Original file line number Diff line number Diff line change
@@ -1,49 +1,49 @@
// REQUIRES: x86-registered-target, amdgpu-registered-target

// Fail on invalid ROCm Path.
// RUN: not %clang -### --target=x86_64-unknown-linux-gnu -fopenmp --offload-arch=gfx908:xnack+ -fsanitize=address -fgpu-sanitize -nogpuinc --rocm-path=%S/Inputs/rocm-invalid %s 2>&1 \
// RUN: not %clang -no-canonical-prefixes -### --target=x86_64-unknown-linux-gnu -fopenmp=libomp --offload-arch=gfx908:xnack+ -fsanitize=address -fgpu-sanitize -nogpuinc --rocm-path=%S/Inputs/rocm-invalid %s 2>&1 \
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@shiltian shiltian Feb 5, 2025

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in our openmp front end tests, we rarely use -fopenmp=libomp, especially for target offloading. why does it becomes an issue here?

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@rupprecht rupprecht Feb 5, 2025

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The error is: clang: error: '-fopenmp-targets' must be used in conjunction with a '-fopenmp' option compatible with offloading; e.g., '-fopenmp=libomp' or '-fopenmp=libiomp5'

The -fopenmp-targets flag is not explicitly set here, I assume it must be added somewhere with the driver based on another param.

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@shiltian shiltian Feb 5, 2025

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hmm, I wonder if you compile clang/llvm with special setup? I could not reproduce this issue locally.

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@rupprecht rupprecht Feb 5, 2025

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When reproducing, are you changing the default value of -fopenmp? The default is in cmake here:

llvm-project/clang/CMakeLists.txt

Line 273 in c491cbf

set(CLANG_DEFAULT_OPENMP_RUNTIME "libomp" CACHE STRING

Alternatively, can you repro the failure by seting -fopenmp=libgomp in the tests?

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@shiltian shiltian Feb 5, 2025 •
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so when you build clang, you set it to something like libgomp?

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@rupprecht rupprecht Feb 5, 2025

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Yes, that's right.

BTW, it's actually quite common that tests uses explicit fopenmp= values:

See also a5098e5

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@shiltian shiltian Feb 5, 2025

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thanks for pointing that out. this looks like indeed more common in the driver test.

// RUN: | FileCheck --check-prefix=FAIL %s

// Enable multiple sanitizer's apart from ASan with invalid rocm-path.
// RUN: not %clang -### --target=x86_64-unknown-linux-gnu -fopenmp --offload-arch=gfx908:xnack+ -fsanitize=address -fsanitize=leak -fgpu-sanitize --rocm-path=%S/Inputs/rocm-invalid -nogpuinc %s 2>&1 \
// RUN: not %clang -no-canonical-prefixes -### --target=x86_64-unknown-linux-gnu -fopenmp=libomp --offload-arch=gfx908:xnack+ -fsanitize=address -fsanitize=leak -fgpu-sanitize --rocm-path=%S/Inputs/rocm-invalid -nogpuinc %s 2>&1 \
// RUN: | FileCheck --check-prefixes=NOTSUPPORTED,FAIL %s

// Memory, Leak, UndefinedBehaviour and Thread Sanitizer are not supported on AMDGPU.
// RUN: %clang -### --target=x86_64-unknown-linux-gnu -fopenmp --offload-arch=gfx908:xnack+ -fsanitize=address -fsanitize=leak -fgpu-sanitize --rocm-path=%S/Inputs/rocm -nogpuinc %s 2>&1 \
// RUN: %clang -no-canonical-prefixes -### --target=x86_64-unknown-linux-gnu -fopenmp=libomp --offload-arch=gfx908:xnack+ -fsanitize=address -fsanitize=leak -fgpu-sanitize --rocm-path=%S/Inputs/rocm -nogpuinc %s 2>&1 \
// RUN: | FileCheck --check-prefix=NOTSUPPORTED %s

// GPU ASan Enabled Test Cases
// ASan enabled for amdgpu-arch [gfx908]
// RUN: %clang -### --target=x86_64-unknown-linux-gnu -fopenmp --offload-arch=gfx908 -fsanitize=address -fgpu-sanitize --rocm-path=%S/Inputs/rocm %s 2>&1 \
// RUN: %clang -no-canonical-prefixes -### --target=x86_64-unknown-linux-gnu -fopenmp=libomp --offload-arch=gfx908 -fsanitize=address -fgpu-sanitize --rocm-path=%S/Inputs/rocm %s 2>&1 \
// RUN: | FileCheck -check-prefixes=NOXNACK,GPUSAN %s

// GPU ASan enabled for amdgpu-arch [gfx908:xnack-]
// RUN: %clang -### --target=x86_64-unknown-linux-gnu -fopenmp --offload-arch=gfx908:xnack- -fsanitize=address -fgpu-sanitize --rocm-path=%S/Inputs/rocm %s 2>&1 \
// RUN: %clang -no-canonical-prefixes -### --target=x86_64-unknown-linux-gnu -fopenmp=libomp --offload-arch=gfx908:xnack- -fsanitize=address -fgpu-sanitize --rocm-path=%S/Inputs/rocm %s 2>&1 \
// RUN: | FileCheck -check-prefixes=XNACKNEG,GPUSAN %s

// GPU ASan enabled for amdgpu-arch [gfx908:xnack+]
// RUN: %clang -### --target=x86_64-unknown-linux-gnu -fopenmp --offload-arch=gfx908:xnack+ -fsanitize=address -fgpu-sanitize --rocm-path=%S/Inputs/rocm %s 2>&1 \
// RUN: %clang -no-canonical-prefixes -### --target=x86_64-unknown-linux-gnu -fopenmp=libomp --offload-arch=gfx908:xnack+ -fsanitize=address -fgpu-sanitize --rocm-path=%S/Inputs/rocm %s 2>&1 \
// RUN: | FileCheck -check-prefixes=GPUSAN %s

// ASan enabled for multiple amdgpu-arch [gfx908:xnack+,gfx900:xnack+]
// RUN: %clang -### --target=x86_64-unknown-linux-gnu -fopenmp --offload-arch=gfx908:xnack+ --offload-arch=gfx900:xnack+ -fsanitize=address -fgpu-sanitize --rocm-path=%S/Inputs/rocm %s 2>&1 \
// RUN: %clang -no-canonical-prefixes -### --target=x86_64-unknown-linux-gnu -fopenmp=libomp --offload-arch=gfx908:xnack+ --offload-arch=gfx900:xnack+ -fsanitize=address -fgpu-sanitize --rocm-path=%S/Inputs/rocm %s 2>&1 \
// RUN: | FileCheck -check-prefixes=GPUSAN %s

// GPU ASan Disabled Test Cases
// ASan disabled for amdgpu-arch [gfx908]
// RUN: %clang -### --target=x86_64-unknown-linux-gnu -fopenmp --offload-arch=gfx908 -fsanitize=address -fno-gpu-sanitize --rocm-path=%S/Inputs/rocm %s 2>&1 \
// RUN: %clang -no-canonical-prefixes -### --target=x86_64-unknown-linux-gnu -fopenmp=libomp --offload-arch=gfx908 -fsanitize=address -fno-gpu-sanitize --rocm-path=%S/Inputs/rocm %s 2>&1 \
// RUN: | FileCheck -check-prefixes=NOGPUSAN %s

// GPU ASan disabled for amdgpu-arch [gfx908:xnack-]
// RUN: %clang -### --target=x86_64-unknown-linux-gnu -fopenmp --offload-arch=gfx908:xnack- -fsanitize=address -fno-gpu-sanitize --rocm-path=%S/Inputs/rocm %s 2>&1 \
// RUN: %clang -no-canonical-prefixes -### --target=x86_64-unknown-linux-gnu -fopenmp=libomp --offload-arch=gfx908:xnack- -fsanitize=address -fno-gpu-sanitize --rocm-path=%S/Inputs/rocm %s 2>&1 \
// RUN: | FileCheck -check-prefixes=NOGPUSAN %s

// GPU ASan disabled for amdgpu-arch [gfx908:xnack+]
// RUN: %clang -### --target=x86_64-unknown-linux-gnu -fopenmp --offload-arch=gfx908:xnack+ -fsanitize=address -fno-gpu-sanitize --rocm-path=%S/Inputs/rocm %s 2>&1 \
// RUN: %clang -no-canonical-prefixes -### --target=x86_64-unknown-linux-gnu -fopenmp=libomp --offload-arch=gfx908:xnack+ -fsanitize=address -fno-gpu-sanitize --rocm-path=%S/Inputs/rocm %s 2>&1 \
// RUN: | FileCheck -check-prefixes=NOGPUSAN %s

// ASan disabled for amdgpu-arch [gfx908:xnack+,gfx900:xnack+]
// RUN: %clang -### --target=x86_64-unknown-linux-gnu -fopenmp --offload-arch=gfx908:xnack+ --offload-arch=gfx900:xnack+ -fsanitize=address -fno-gpu-sanitize --rocm-path=%S/Inputs/rocm %s 2>&1 \
// RUN: %clang -no-canonical-prefixes -### --target=x86_64-unknown-linux-gnu -fopenmp=libomp --offload-arch=gfx908:xnack+ --offload-arch=gfx900:xnack+ -fsanitize=address -fno-gpu-sanitize --rocm-path=%S/Inputs/rocm %s 2>&1 \
// RUN: | FileCheck -check-prefixes=NOGPUSAN %s

// FAIL-DAG: error: cannot find ROCm device library for ABI version 5; provide its path via '--rocm-path' or '--rocm-device-lib-path', or pass '-nogpulib' to build without ROCm device library
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4 changes: 2 additions & 2 deletions clang/test/Driver/offload-Xarch.c
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// RUN: %clang --target=x86_64-unknown-linux-gnu -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: %clang -fopenmp=libomp -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: %clang -fopenmp=libomp -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"
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