NFC, explicitly specify the -fopenmp lib in spirv-openmp-toolchain.c test

Don't rely on the default `CLANG_DEFAULT_OPENMP_RUNTIME` env variable
which is `libomp` by default.

Author: hokein

clang/test/Driver/spirv-openmp-toolchain.c

@@ -9,7 +9,7 @@
 // CHECK: "-cc1" "-triple" "x86_64-unknown-linux-gnu"{{.*}}"-emit-obj"
 // CHECK: clang-linker-wrapper{{.*}} "-o" "a.out"
 
-// RUN: %clang -ccc-print-phases --target=x86_64-unknown-linux-gnu -fopenmp -fopenmp-targets=spirv64-intel %s 2>&1 \
+// RUN: %clang -ccc-print-phases --target=x86_64-unknown-linux-gnu -fopenmp=libomp -fopenmp-targets=spirv64-intel %s 2>&1 \
 // RUN: | FileCheck --check-prefix=CHECK-PHASES %s
 
 // CHECK-PHASES: 0: input, "[[INPUT:.+]]", c, (host-openmp)
@@ -28,8 +28,8 @@
 // CHECK-PHASES: 13: assembler, {12}, object, (host-openmp)
 // CHECK-PHASES: 14: clang-linker-wrapper, {13}, image, (host-openmp)
 
-// RUN: %clang -### --target=x86_64-unknown-linux-gnu -ccc-print-bindings -fopenmp -fopenmp-targets=spirv64-intel -nogpulib %s 2>&1 | FileCheck %s --check-prefix=CHECK-BINDINGS
-// RUN: %clang -### --target=x86_64-unknown-linux-gnu -ccc-print-bindings -fopenmp -fopenmp-targets=spirv64-intel -nogpulib %s 2>&1 | FileCheck %s --check-prefix=CHECK-BINDINGS
+// RUN: %clang -### --target=x86_64-unknown-linux-gnu -ccc-print-bindings -fopenmp=libomp -fopenmp-targets=spirv64-intel -nogpulib %s 2>&1 | FileCheck %s --check-prefix=CHECK-BINDINGS
+// RUN: %clang -### --target=x86_64-unknown-linux-gnu -ccc-print-bindings -fopenmp=libomp -fopenmp-targets=spirv64-intel -nogpulib %s 2>&1 | FileCheck %s --check-prefix=CHECK-BINDINGS
 
 // CHECK-BINDINGS: "x86_64-unknown-linux-gnu" - "clang", inputs: ["[[INPUT:.+]]"], output: "[[HOST_BC:.+]]"
 // CHECK-BINDINGS: "spirv64-intel" - "clang", inputs: ["[[INPUT]]", "[[HOST_BC]]"], output: "[[DEVICE_TEMP_BC:.+]]"
@@ -38,8 +38,8 @@
 // CHECK-BINDINGS: "x86_64-unknown-linux-gnu" - "clang", inputs: ["[[HOST_BC]]", "[[DEVICE_IMAGE]]"], output: "[[HOST_OBJ:.+]]"
 // CHECK-BINDINGS: "x86_64-unknown-linux-gnu" - "Offload::Linker", inputs: ["[[HOST_OBJ]]"], output: "a.out"
 
-// RUN: %clang -### --target=x86_64-unknown-linux-gnu -ccc-print-bindings -save-temps -fopenmp -fopenmp-targets=spirv64-intel -nogpulib %s 2>&1 | FileCheck %s --check-prefix=CHECK-BINDINGS-TEMPS
-// RUN: %clang -### --target=x86_64-unknown-linux-gnu -ccc-print-bindings -save-temps -fopenmp -fopenmp-targets=spirv64-intel %s 2>&1 | FileCheck %s --check-prefix=CHECK-BINDINGS-TEMPS
+// RUN: %clang -### --target=x86_64-unknown-linux-gnu -ccc-print-bindings -save-temps -fopenmp=libomp -fopenmp-targets=spirv64-intel -nogpulib %s 2>&1 | FileCheck %s --check-prefix=CHECK-BINDINGS-TEMPS
+// RUN: %clang -### --target=x86_64-unknown-linux-gnu -ccc-print-bindings -save-temps -fopenmp=libomp -fopenmp-targets=spirv64-intel %s 2>&1 | FileCheck %s --check-prefix=CHECK-BINDINGS-TEMPS
 // CHECK-BINDINGS-TEMPS: "x86_64-unknown-linux-gnu" - "clang", inputs: ["[[INPUT:.+]]"], output: "[[HOST_PP:.+]]"
 // CHECK-BINDINGS-TEMPS: "x86_64-unknown-linux-gnu" - "clang", inputs: ["[[HOST_PP]]"], output: "[[HOST_BC:.+]]"
 // CHECK-BINDINGS-TEMPS: "spirv64-intel" - "clang", inputs: ["[[INPUT]]"], output: "[[DEVICE_PP:.+]]"
@@ -51,14 +51,14 @@
 // CHECK-BINDINGS-TEMPS: "x86_64-unknown-linux-gnu" - "clang::as", inputs: ["[[HOST_ASM]]"], output: "[[HOST_OBJ:.+]]"
 // CHECK-BINDINGS-TEMPS: "x86_64-unknown-linux-gnu" - "Offload::Linker", inputs: ["[[HOST_OBJ]]"], output: "a.out"
 
-// RUN: %clang -### --target=x86_64-unknown-linux-gnu -emit-llvm -S -fopenmp -fopenmp-targets=spirv64-intel -nogpulib %s 2>&1 | FileCheck %s --check-prefix=CHECK-EMIT-LLVM-IR
+// RUN: %clang -### --target=x86_64-unknown-linux-gnu -emit-llvm -S -fopenmp=libomp -fopenmp-targets=spirv64-intel -nogpulib %s 2>&1 | FileCheck %s --check-prefix=CHECK-EMIT-LLVM-IR
 // CHECK-EMIT-LLVM-IR: "-cc1" "-triple" "spirv64-intel"{{.*}}"-emit-llvm-bc"
 
-// RUN: %clang -### --target=x86_64-unknown-linux-gnu -fopenmp -fopenmp-targets=spirv64-intel \
+// RUN: %clang -### --target=x86_64-unknown-linux-gnu -fopenmp=libomp -fopenmp-targets=spirv64-intel \
 // RUN: --sysroot=%S/Inputs/spirv-openmp/ %s 2>&1 | FileCheck --check-prefix=CHECK-GPULIB %s
 // CHECK-GPULIB: "-cc1" "-triple" "spirv64-intel"{{.*}}"-mlink-builtin-bitcode" "{{.*}}libomptarget-spirv64.bc"
 
-// RUN: not %clang -### --target=x86_64-unknown-linux-gnu -fopenmp --offload-arch=spirv64-intel \
+// RUN: not %clang -### --target=x86_64-unknown-linux-gnu -fopenmp=libomp --offload-arch=spirv64-intel \
 // RUN:        --libomptarget-spirv-bc-path=%t/ -nogpulib %s 2>&1 \
 // RUN: | FileCheck %s --check-prefix=CHECK-OFFLOAD-ARCH-ERROR
 // CHECK-OFFLOAD-ARCH-ERROR: error: failed to deduce triple for target architecture 'spirv64-intel'; specify the triple using '-fopenmp-targets' and '-Xopenmp-target' instead