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

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Add --unwindlib=[libgcc|compiler-rt] to parallel --rtlib= [take 2] "clang++ hello.cc --rtlib=compiler-rt" now can works without specifying additional unwind or exception handling libraries. This reworked version of the feature no longer modifies today's default unwind library for compiler-rt: which is nothing. Rather, a user can specify -DCLANG_DEFAULT_UNWINDLIB=libunwind when configuring the compiler. This should address the issues from the previous version. Update tests for new --unwindlib semantics. Differential Revision: https://reviews.llvm.org/D59109 llvm-svn: 356508
2019-03-20 04:01:59 +08:00
// General tests that the driver handles combinations of --rtlib=XXX and
// --unwindlib=XXX properly.
//
// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
// RUN: --target=x86_64-unknown-linux -rtlib=libgcc \
// RUN: --gcc-toolchain="" \
// RUN: | FileCheck --check-prefix=RTLIB-GCC %s
// RTLIB-GCC: "{{.*}}lgcc"
// RTLIB-GCC: "{{.*}}lgcc_s"
//
// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
// RUN: --target=x86_64-unknown-linux -rtlib=libgcc --unwindlib=libunwind \
// RUN: --gcc-toolchain="" \
// RUN: | FileCheck --check-prefix=RTLIB-GCC-UNWINDLIB-COMPILER-RT %s
// RTLIB-GCC-UNWINDLIB-COMPILER-RT: "{{.*}}lgcc"
[Driver] Make -static-libgcc imply static libunwind In the GNU toolchain, `-static-libgcc` implies that the unwindlib will be linked statically. However, when `--unwindlib=libunwind`, this flag is ignored, and a bare `-lunwind` is added to the linker args. Unfortunately, this means that if both `libunwind.so`, and `libunwind.a` are present in the library path, `libunwind.so` will be chosen in all cases where `-static` is not set. This change makes `-static-libgcc` affect the `-l` flag produced by `--unwindlib=libunwind`. After this patch, providing `-static-libgcc --unwindlib=libunwind` will cause the driver to explicitly emit `-l:libunwind.a` to statically link libunwind. For all other cases it will emit `-l:libunwind.so` matching current behavior with a more explicit link line. https://reviews.llvm.org/D70416
2019-11-16 09:53:55 +08:00
// RTLIB-GCC-UNWINDLIB-COMPILER-RT: "{{.*}}l:libunwind.so"
//
// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
// RUN: --target=x86_64-unknown-linux -rtlib=libgcc --unwindlib=libunwind \
// RUN: -static-libgcc \
// RUN: --gcc-toolchain="" \
// RUN: | FileCheck --check-prefix=RTLIB-GCC-STATIC-UNWINDLIB-COMPILER-RT %s
// RTLIB-GCC-STATIC-UNWINDLIB-COMPILER-RT: "{{.*}}lgcc"
// RTLIB-GCC-STATIC-UNWINDLIB-COMPILER-RT: "{{.*}}l:libunwind.a"
Add --unwindlib=[libgcc|compiler-rt] to parallel --rtlib= [take 2] "clang++ hello.cc --rtlib=compiler-rt" now can works without specifying additional unwind or exception handling libraries. This reworked version of the feature no longer modifies today's default unwind library for compiler-rt: which is nothing. Rather, a user can specify -DCLANG_DEFAULT_UNWINDLIB=libunwind when configuring the compiler. This should address the issues from the previous version. Update tests for new --unwindlib semantics. Differential Revision: https://reviews.llvm.org/D59109 llvm-svn: 356508
2019-03-20 04:01:59 +08:00
//
// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
// RUN: --target=x86_64-unknown-linux -rtlib=compiler-rt \
// RUN: --gcc-toolchain="" \
// RUN: | FileCheck --check-prefix=RTLIB-COMPILER-RT %s
// RTLIB-COMPILER-RT: "{{.*}}libclang_rt.builtins-x86_64.a"
//
// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
// RUN: --target=x86_64-unknown-linux -rtlib=compiler-rt --unwindlib=libgcc \
// RUN: --gcc-toolchain="" \
// RUN: | FileCheck --check-prefix=RTLIB-COMPILER-RT-UNWINDLIB-GCC %s
// RTLIB-COMPILER-RT-UNWINDLIB-GCC: "{{.*}}libclang_rt.builtins-x86_64.a"
// RTLIB-COMPILER-RT-UNWINDLIB-GCC: "{{.*}}lgcc_s"
//
// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
// RUN: --target=x86_64-unknown-linux -rtlib=compiler-rt --unwindlib=libgcc \
// RUN: -static --gcc-toolchain="" \
// RUN: | FileCheck --check-prefix=RTLIB-COMPILER-RT-UNWINDLIB-GCC-STATIC %s
// RTLIB-COMPILER-RT-UNWINDLIB-GCC-STATIC: "{{.*}}libclang_rt.builtins-x86_64.a"
// RTLIB-COMPILER-RT-UNWINDLIB-GCC-STATIC: "{{.*}}lgcc_eh"
//
// RUN: not %clang -no-canonical-prefixes %s -o %t.o 2> %t.err \
// RUN: --target=x86_64-unknown-linux -rtlib=libgcc --unwindlib=libunwind \
// RUN: --gcc-toolchain="" \
// 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"
[clang] [MinGW] Fix libunwind extension Differential Revision: https://reviews.llvm.org/D79995
2020-05-29 20:09:44 +08:00
//
// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 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: "{{.*}}l:libunwind.dll.a"
//
// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 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: "{{.*}}l:libunwind.a"
//
// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 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: "{{.*}}lunwind"