20d34eacf3
Using noexcept multilib with -fno-exceptions can lead to significant space savings when statically linking libc++abi because we don't need all the unwinding and demangling code. When compiling with ASan, we already get a lot of overhead from the instrumentation itself, when statically linking libc++abi, that overhead is even larger. Having the noexcept variant for ASan can help significantly, we've seen more than 50% size reduction in our system image, which offsets the cost of having to build another multilib. Differential Revision: https://reviews.llvm.org/D64140 llvm-svn: 365994
79 lines
3.7 KiB
C++
79 lines
3.7 KiB
C++
// RUN: %clangxx %s -### -no-canonical-prefixes --target=x86_64-fuchsia \
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// RUN: -ccc-install-dir %S/Inputs/basic_fuchsia_tree/bin \
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// RUN: -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \
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// RUN: --sysroot=%S/platform -fuse-ld=lld 2>&1 | FileCheck %s
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// CHECK: {{.*}}clang{{.*}}" "-cc1"
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// CHECK: "-triple" "x86_64-fuchsia"
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// CHECK: "-fuse-init-array"
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// CHECK: "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
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// CHECK: "-isysroot" "[[SYSROOT:[^"]+]]"
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// CHECK: "-internal-isystem" "{{.*[/\\]}}include{{/|\\\\}}c++{{/|\\\\}}v1"
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// CHECK: "-internal-externc-isystem" "[[SYSROOT]]{{/|\\\\}}include"
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// CHECK: {{.*}}ld.lld{{.*}}" "-z" "rodynamic"
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// CHECK: "--sysroot=[[SYSROOT]]"
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// CHECK: "-pie"
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// CHECK: "--build-id"
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// CHECK: "-dynamic-linker" "ld.so.1"
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// CHECK: Scrt1.o
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// CHECK-NOT: crti.o
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// CHECK-NOT: crtbegin.o
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// CHECK: "-L[[SYSROOT]]{{/|\\\\}}lib"
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// CHECK: "--push-state"
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// CHECK: "--as-needed"
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// CHECK: "-lc++"
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// CHECK: "-lm"
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// CHECK: "--pop-state"
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// CHECK: "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}x86_64-fuchsia{{/|\\\\}}libclang_rt.builtins.a"
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// CHECK: "-lc"
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// CHECK-NOT: crtend.o
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// CHECK-NOT: crtn.o
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// RUN: %clangxx %s -### --target=x86_64-unknown-fuchsia -stdlib=libstdc++ \
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// RUN: -fuse-ld=lld 2>&1 \
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// RUN: | FileCheck %s -check-prefix=CHECK-STDLIB
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// CHECK-STDLIB: error: invalid library name in argument '-stdlib=libstdc++'
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// RUN: %clangxx %s -### --target=x86_64-unknown-fuchsia -static-libstdc++ \
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// RUN: -fuse-ld=lld 2>&1 \
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// RUN: | FileCheck %s -check-prefix=CHECK-STATIC
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// CHECK-STATIC: "--push-state"
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// CHECK-STATIC: "--as-needed"
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// CHECK-STATIC: "-Bstatic"
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// CHECK-STATIC: "-lc++"
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// CHECK-STATIC: "-Bdynamic"
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// CHECK-STATIC: "-lm"
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// CHECK-STATIC: "--pop-state"
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// CHECK-STATIC: "-lc"
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// RUN: %clangxx %s -### --target=x86_64-fuchsia -nostdlib++ -fuse-ld=lld 2>&1 \
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// RUN: | FileCheck %s -check-prefix=CHECK-NOSTDLIBXX
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// CHECK-NOSTDLIBXX-NOT: "-lc++"
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// CHECK-NOSTDLIBXX-NOT: "-lm"
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// CHECK-NOSTDLIBXX: "-lc"
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// RUN: %clangxx %s -### --target=x86_64-fuchsia \
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// RUN: -ccc-install-dir %S/Inputs/basic_fuchsia_tree/bin \
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// RUN: -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \
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// RUN: -fuse-ld=lld 2>&1\
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// RUN: | FileCheck %s -check-prefixes=CHECK-MULTILIB-X86
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// RUN: %clangxx %s -### --target=x86_64-fuchsia -fsanitize=address \
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// RUN: -ccc-install-dir %S/Inputs/basic_fuchsia_tree/bin \
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// RUN: -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \
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// RUN: -fuse-ld=lld 2>&1\
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// RUN: | FileCheck %s -check-prefixes=CHECK-MULTILIB-X86,CHECK-MULTILIB-ASAN-X86
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// RUN: %clangxx %s -### --target=x86_64-fuchsia -fno-exceptions \
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// RUN: -ccc-install-dir %S/Inputs/basic_fuchsia_tree/bin \
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// RUN: -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \
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// RUN: -fuse-ld=lld 2>&1\
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// RUN: | FileCheck %s -check-prefixes=CHECK-MULTILIB-X86,CHECK-MULTILIB-NOEXCEPT-X86
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// RUN: %clangxx %s -### --target=x86_64-fuchsia -fsanitize=address -fno-exceptions \
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// RUN: -ccc-install-dir %S/Inputs/basic_fuchsia_tree/bin \
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// RUN: -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \
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// RUN: -fuse-ld=lld 2>&1\
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// RUN: | FileCheck %s -check-prefixes=CHECK-MULTILIB-X86,CHECK-MULTILIB-ASAN-NOEXCEPT-X86
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// CHECK-MULTILIB-X86: "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
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// CHECK-MULTILIB-ASAN-X86: "-L{{.*}}{{/|\\\\}}..{{/|\\\\}}lib{{/|\\\\}}x86_64-fuchsia{{/|\\\\}}c++{{/|\\\\}}asan"
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// CHECK-MULTILIB-NOEXCEPT-X86: "-L{{.*}}{{/|\\\\}}..{{/|\\\\}}lib{{/|\\\\}}x86_64-fuchsia{{/|\\\\}}c++{{/|\\\\}}noexcept"
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// CHECK-MULTILIB-ASAN-NOEXCEPT-X86: "-L{{.*}}{{/|\\\\}}..{{/|\\\\}}lib{{/|\\\\}}x86_64-fuchsia{{/|\\\\}}c++{{/|\\\\}}asan+noexcept"
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// CHECK-MULTILIB-X86: "-L{{.*}}{{/|\\\\}}..{{/|\\\\}}lib{{/|\\\\}}x86_64-fuchsia{{/|\\\\}}c++"
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