[Driver,test] Remove --gcc-toolchain=""

This option was added so that changing CMake GCC_INSTALL_PREFIX would
not cause test failures or due to cargo culting. Setting
GCC_INSTALL_PREFIX leads to an error now and we should stop making our
tests ugly.

clang/test/Driver/compiler-rt-unwind.c

@@ -3,7 +3,7 @@
 //
 // RUN: %clang -### %s 2>&1 \
 // RUN:     --target=x86_64-unknown-linux -rtlib=libgcc --unwindlib=platform \
-// RUN:     --gcc-toolchain="" -resource-dir=%S/Inputs/resource_dir \
+// RUN:     -resource-dir=%S/Inputs/resource_dir \
 // RUN:   | FileCheck --check-prefix=RTLIB-GCC %s
 // RTLIB-GCC: "-lgcc"
 // RTLIB-GCC-SAME: "--as-needed"
@@ -12,7 +12,7 @@
 //
 // RUN: %clangxx -### %s 2>&1 \
 // RUN:     --target=x86_64-unknown-linux -rtlib=libgcc --unwindlib=platform \
-// RUN:     --gcc-toolchain="" -resource-dir=%S/Inputs/resource_dir \
+// RUN:     -resource-dir=%S/Inputs/resource_dir \
 // RUN:   | FileCheck --check-prefix=RTLIB-GXX %s
 // RTLIB-GXX: "-lgcc"
 // RTLIB-GXX-NOT: "--as-needed"
@@ -21,11 +21,11 @@
 //
 // RUN: not %clang -### %s 2>&1 \
 // RUN:     --target=x86_64-unknown-linux -rtlib=libgcc --unwindlib=libunwind \
-// RUN:     --gcc-toolchain="" -resource-dir=%S/Inputs/resource_dir \
+// RUN:     -resource-dir=%S/Inputs/resource_dir \
 // RUN:   | FileCheck --check-prefix=RTLIB-GCC-UNWINDLIB-COMPILER-RT %s
 // RUN: not %clangxx -### %s 2>&1 \
 // RUN:     --target=x86_64-unknown-linux -rtlib=libgcc --unwindlib=libunwind \
-// RUN:     --gcc-toolchain="" -resource-dir=%S/Inputs/resource_dir \
+// RUN:     -resource-dir=%S/Inputs/resource_dir \
 // RUN:   | FileCheck --check-prefix=RTLIB-GCC-UNWINDLIB-COMPILER-RT %s
 // RTLIB-GCC-UNWINDLIB-COMPILER-RT: "-lgcc"
 // RTLIB-GCC-UNWINDLIB-COMPILER-RT-SAME: "--as-needed"
@@ -35,32 +35,32 @@
 // RUN: not %clang -### %s 2>&1 \
 // RUN:     --target=x86_64-unknown-linux -rtlib=libgcc --unwindlib=libunwind \
 // RUN:     -shared-libgcc \
-// RUN:     --gcc-toolchain="" -resource-dir=%S/Inputs/resource_dir \
+// RUN:     -resource-dir=%S/Inputs/resource_dir \
 // RUN:   | FileCheck --check-prefix=RTLIB-GCC-SHARED-UNWINDLIB-COMPILER-RT %s
 // RTLIB-GCC-SHARED-UNWINDLIB-COMPILER-RT: "-l:libunwind.so"
 // RTLIB-GCC-SHARED-UNWINDLIB-COMPILER-RT-SAME: "-lgcc"
 //
 // RUN: not %clang -### %s 2>&1 \
 // RUN:     --target=x86_64-unknown-linux -rtlib=libgcc --unwindlib=libunwind \
 // RUN:     -static-libgcc \
-// RUN:     --gcc-toolchain="" -resource-dir=%S/Inputs/resource_dir \
+// RUN:     -resource-dir=%S/Inputs/resource_dir \
 // RUN:   | FileCheck --check-prefix=RTLIB-GCC-STATIC-UNWINDLIB-COMPILER-RT %s
 // RTLIB-GCC-STATIC-UNWINDLIB-COMPILER-RT: "-lgcc"
 // RTLIB-GCC-STATIC-UNWINDLIB-COMPILER-RT-SAME: "-l:libunwind.a"
 //
 // RUN: %clang -### %s 2>&1   \
 // RUN:     --target=x86_64-unknown-linux -rtlib=compiler-rt \
-// RUN:     --gcc-toolchain="" -resource-dir=%S/Inputs/resource_dir \
+// RUN:     -resource-dir=%S/Inputs/resource_dir \
 // RUN:   | FileCheck --check-prefix=RTLIB-COMPILER-RT %s
 // RTLIB-COMPILER-RT: "{{.*}}libclang_rt.builtins.a"
 //
 // RUN: %clang -### %s 2>&1 \
 // RUN:     --target=x86_64-unknown-linux -rtlib=compiler-rt --unwindlib=libunwind \
-// RUN:     --gcc-toolchain="" -resource-dir=%S/Inputs/resource_dir \
+// RUN:     -resource-dir=%S/Inputs/resource_dir \
 // RUN:   | FileCheck --check-prefix=RTLIB-COMPILER-RT-UNWINDLIB-COMPILER-RT %s
 // RUN: %clangxx -### %s 2>&1 \
 // RUN:     --target=x86_64-unknown-linux -rtlib=compiler-rt --unwindlib=libunwind \
-// RUN:     --gcc-toolchain="" -resource-dir=%S/Inputs/resource_dir \
+// RUN:     -resource-dir=%S/Inputs/resource_dir \
 // RUN:   | FileCheck --check-prefix=RTLIB-COMPILER-RT-UNWINDLIB-COMPILER-RT %s
 // RTLIB-COMPILER-RT-UNWINDLIB-COMPILER-RT: "{{.*}}libclang_rt.builtins.a"
 // RTLIB-COMPILER-RT-UNWINDLIB-COMPILER-RT-SAME: "--as-needed"
@@ -69,21 +69,21 @@
 //
 // RUN: %clang -### %s 2>&1   \
 // RUN:     --target=x86_64-unknown-linux -rtlib=compiler-rt --unwindlib=libgcc \
-// RUN:     --gcc-toolchain="" -resource-dir=%S/Inputs/resource_dir \
+// RUN:     -resource-dir=%S/Inputs/resource_dir \
 // RUN:   | FileCheck --check-prefix=RTLIB-COMPILER-RT-UNWINDLIB-GCC %s
 // RTLIB-COMPILER-RT-UNWINDLIB-GCC: "{{.*}}libclang_rt.builtins.a"
 // RTLIB-COMPILER-RT-UNWINDLIB-GCC-SAME: "-lgcc_s"
 //
 // RUN: %clang -### %s 2>&1              \
 // RUN:     --target=x86_64-unknown-linux -rtlib=compiler-rt --unwindlib=libgcc \
-// RUN:     -static --gcc-toolchain="" -resource-dir=%S/Inputs/resource_dir \
+// RUN:     -static -resource-dir=%S/Inputs/resource_dir \
 // RUN:   | FileCheck --check-prefix=RTLIB-COMPILER-RT-UNWINDLIB-GCC-STATIC %s
 // RTLIB-COMPILER-RT-UNWINDLIB-GCC-STATIC: "{{.*}}libclang_rt.builtins.a"
 // RTLIB-COMPILER-RT-UNWINDLIB-GCC-STATIC-SAME: "-lgcc_eh"
 //
 // RUN: not %clang %s 2> %t.err              \
 // RUN:     --target=x86_64-unknown-linux -rtlib=libgcc --unwindlib=libunwind \
-// RUN:     --gcc-toolchain="" -resource-dir=%S/Inputs/resource_dir \
+// RUN:     -resource-dir=%S/Inputs/resource_dir \
 // RUN: FileCheck --input-file=%t.err --check-prefix=RTLIB-GCC-UNWINDLIB-COMPILER_RT %s
 // RTLIB-GCC-UNWINDLIB-COMPILER_RT: "{{[.|\\\n]*}}--rtlib=libgcc requires --unwindlib=libgcc"
 //
@@ -97,26 +97,22 @@
 // RUN: %clang -### %s 2>&1 \
 // RUN:     --target=x86_64-w64-mingw32 -rtlib=compiler-rt --unwindlib=libunwind \
 // RUN:     -shared-libgcc \
-// RUN:     --gcc-toolchain="" \
 // RUN:   | FileCheck --check-prefix=MINGW-RTLIB-COMPILER-RT-SHARED-UNWINDLIB-COMPILER-RT %s
 // MINGW-RTLIB-COMPILER-RT-SHARED-UNWINDLIB-COMPILER-RT: "{{.*}}libclang_rt.builtins-x86_64.a"
 // MINGW-RTLIB-COMPILER-RT-SHARED-UNWINDLIB-COMPILER-RT-SAME: "-l:libunwind.dll.a"
 //
 // RUN: %clang -### %s 2>&1 \
 // RUN:     --target=x86_64-w64-mingw32 -rtlib=compiler-rt --unwindlib=libunwind \
 // RUN:     -static-libgcc \
-// RUN:     --gcc-toolchain="" \
 // RUN:   | FileCheck --check-prefix=MINGW-RTLIB-COMPILER-RT-STATIC-UNWINDLIB-COMPILER-RT %s
 // MINGW-RTLIB-COMPILER-RT-STATIC-UNWINDLIB-COMPILER-RT: "{{.*}}libclang_rt.builtins-x86_64.a"
 // MINGW-RTLIB-COMPILER-RT-STATIC-UNWINDLIB-COMPILER-RT-SAME: "-l:libunwind.a"
 //
 // RUN: %clang -### %s 2>&1 \
 // RUN:     --target=x86_64-w64-mingw32 -rtlib=compiler-rt --unwindlib=libunwind \
-// RUN:     --gcc-toolchain="" \
 // RUN:   | FileCheck --check-prefix=MINGW-RTLIB-COMPILER-RT-UNWINDLIB-COMPILER-RT %s
 // RUN: %clangxx -### %s 2>&1 \
 // RUN:     --target=x86_64-w64-mingw32 -rtlib=compiler-rt --unwindlib=libunwind \
-// RUN:     --gcc-toolchain="" \
 // RUN:   | FileCheck --check-prefix=MINGW-RTLIB-COMPILER-RT-UNWINDLIB-COMPILER-RT %s
 // MINGW-RTLIB-COMPILER-RT-UNWINDLIB-COMPILER-RT: "{{.*}}libclang_rt.builtins-x86_64.a"
 // MINGW-RTLIB-COMPILER-RT-UNWINDLIB-COMPILER-RT-SAME: "-lunwind"

clang/test/Driver/constructors.c

@@ -7,58 +7,49 @@
 // RUN: %clang -### %s -fsyntax-only 2>&1       \
 // RUN:     --target=i386-unknown-linux \
 // RUN:     --sysroot=%S/Inputs/resource_dir \
-// RUN:     --gcc-toolchain="" \
 // RUN:   | FileCheck --check-prefix=CHECK-INIT-ARRAY %s
 //
 // RUN: %clang -### %s -fsyntax-only 2>&1       \
 // RUN:     --target=i386-unknown-linux \
 // RUN:     --sysroot=%S/Inputs/fake_install_tree \
-// RUN:     --gcc-toolchain="" \
 // RUN:   | FileCheck --check-prefix=CHECK-INIT-ARRAY %s
 //
 // RUN: %clang -### %s -fsyntax-only 2>&1       \
 // RUN:     -fno-use-init-array \
 // RUN:     --target=i386-unknown-linux \
 // RUN:     --sysroot=%S/Inputs/fake_install_tree \
-// RUN:     --gcc-toolchain="" \
 // RUN:   | FileCheck --check-prefix=CHECK-NO-INIT-ARRAY %s
 //
 // RUN: %clang -### %s -fsyntax-only 2>&1       \
 // RUN:     -fno-use-init-array -fuse-init-array \
 // RUN:     --target=i386-unknown-linux \
 // RUN:     --sysroot=%S/Inputs/fake_install_tree \
-// RUN:     --gcc-toolchain="" \
 // RUN:   | FileCheck --check-prefix=CHECK-INIT-ARRAY %s
 //
 // RUN: %clang -### %s -fsyntax-only 2>&1       \
 // RUN:     --target=i386-unknown-linux \
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
-// RUN:     --gcc-toolchain="" \
 // RUN:   | FileCheck --check-prefix=CHECK-INIT-ARRAY %s
 //
 // RUN: %clang -### %s -fsyntax-only 2>&1       \
 // RUN:     -fuse-init-array \
 // RUN:     --target=i386-unknown-linux \
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
-// RUN:     --gcc-toolchain="" \
 // RUN:   | FileCheck --check-prefix=CHECK-INIT-ARRAY %s
 //
 // RUN: %clang -### %s -fsyntax-only 2>&1       \
 // RUN:     --target=arm-unknown-linux-androideabi \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
-// RUN:     --gcc-toolchain="" \
 // RUN:   | FileCheck --check-prefix=CHECK-INIT-ARRAY %s
 //
 // RUN: %clang -### %s -fsyntax-only 2>&1       \
 // RUN:     --target=i386-unknown-linux-android \
 // RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
-// RUN:     --gcc-toolchain="" \
 // RUN:   | FileCheck --check-prefix=CHECK-INIT-ARRAY %s
 //
 // RUN: %clang -### %s -fsyntax-only 2>&1       \
 // RUN:     --target=aarch64-none-linux-gnu \
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
-// RUN:     --gcc-toolchain="" \
 // RUN:   | FileCheck --check-prefix=CHECK-INIT-ARRAY %s
 //
 // RUN: %clang -### %s -fsyntax-only 2>&1       \
@@ -68,7 +59,6 @@
 // RUN: %clang -### %s -fsyntax-only 2>&1       \
 // RUN:     --target=arm64-none-linux-gnu \
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
-// RUN:     --gcc-toolchain="" \
 // RUN:   | FileCheck --check-prefix=CHECK-INIT-ARRAY %s
 //
 // RUN: %clang -### %s -fsyntax-only 2>&1       \

clang/test/Driver/cuda-detect.cu

@@ -146,8 +146,8 @@
 
 // Verify that C++ include paths are passed for both host and device frontends.
 // RUN: %clang -### --target=x86_64-linux-gnu %s \
-// RUN: --stdlib=libstdc++ --sysroot=%S/Inputs/ubuntu_14.04_multiarch_tree2 \
-// RUN: -nogpulib -nogpuinc --gcc-toolchain="" 2>&1 \
+// RUN:   --stdlib=libstdc++ --sysroot=%S/Inputs/ubuntu_14.04_multiarch_tree2 \
+// RUN:   -nogpulib -nogpuinc 2>&1 \
 // RUN: | FileCheck %s --check-prefix CHECK-CXXINCLUDE
 
 // Verify that CUDA SDK version is propagated to the CC1 compilations.

clang/test/Driver/dragonfly.c

@@ -5,7 +5,6 @@
 
 // Check x86_64-unknown-dragonfly, X86_64
 // RUN: %clang -### %s 2>&1 --target=x86_64-unknown-dragonfly \
-// RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/basic_dragonfly_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-LD-X86_64 %s
 // CHECK-LD-X86_64: "-cc1" "-triple" "x86_64-unknown-dragonfly"

clang/test/Driver/env.c

@@ -8,13 +8,13 @@
 // RUN:   %clang %s -### -o %t.o --target=i386-unknown-linux \
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
 // RUN:     --rtlib=platform --unwindlib=platform -no-pie \
-// RUN:     --gcc-toolchain="" 2>&1 | FileCheck --check-prefix=CHECK-LD-32 %s
+// RUN:     2>&1 | FileCheck --check-prefix=CHECK-LD-32 %s
 //
 // RUN: env -i LC_ALL=C PATH="" LD_LIBRARY_PATH="$LD_LIBRARY_PATH" CLANG_NO_DEFAULT_CONFIG=1 \
 // RUN:   %clang %s -### -o %t.o --target=i386-unknown-linux \
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
 // RUN:     --rtlib=platform --unwindlib=platform -no-pie \
-// RUN:     --gcc-toolchain="" 2>&1 | FileCheck --check-prefix=CHECK-LD-32 %s
+// RUN:     2>&1 | FileCheck --check-prefix=CHECK-LD-32 %s
 //
 // CHECK-LD-32-NOT: warning:
 // CHECK-LD-32: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"

clang/test/Driver/haiku.c

@@ -39,7 +39,6 @@
 
 // Check x86_64-unknown-haiku, X86_64
 // RUN: %clang -### %s 2>&1 --target=x86_64-unknown-haiku \
-// RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/haiku_x86_64_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-LD-X86_64 %s
 // CHECK-LD-X86_64: "-cc1" "-triple" "x86_64-unknown-haiku"
@@ -63,7 +62,6 @@
 
 // Check the right flags are present with -shared
 // RUN: %clang -### %s -shared 2>&1 --target=x86_64-unknown-haiku \
-// RUN:     --gcc-toolchain="" \
 // RUN:     --sysroot=%S/Inputs/haiku_x86_64_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-X86_64-SHARED %s
 // CHECK-X86_64-SHARED: "-cc1" "-triple" "x86_64-unknown-haiku"

clang/test/Driver/hexagon-toolchain-elf.c

@@ -36,7 +36,6 @@
 
 // RUN: %clangxx -### --target=hexagon-unknown-elf -fno-integrated-as    \
 // RUN:   -ccc-install-dir %S/Inputs/hexagon_tree/qc/bin \
-// RUN:   --gcc-toolchain="" \
 // RUN:   -nostdlibinc %s 2>&1 | FileCheck -check-prefix=CHECK113 %s
 // CHECK113: "-cc1"
 // CHECK113-NOT: "-internal-isystem"