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

These tests assume `-fopenmp=libomp` is the default, which it may not
be. We also need to invoke clang with `-no-canonical-prefixes` to ensure
we get the argv we expect, i.e. clang may be a symlink to a binary
elsewhere that has a different name.

Fixes tests added by 455cedc and
646d352

Author: rupprecht

clang/test/Driver/amdgpu-openmp-sanitize-options.c

@@ -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 \
 // 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

clang/test/Driver/offload-Xarch.c

@@ -1,10 +1,10 @@
 // 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"