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For a default visibility external linkage definition, dso_local is set for ELF -fno-pic/-fpie and COFF and Mach-O. Since default clang -cc1 for ELF is similar to -fpic ("PIC Level" is not set), this nuance causes unneeded binary format differences. To make emitted IR similar, ELF -cc1 -fpic will default to -fno-semantic-interposition, which sets dso_local for default visibility external linkage definitions. To make this flip smooth and enable future (dso_local as definition default), this patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `.
31 lines
1.3 KiB
C++
31 lines
1.3 KiB
C++
// We want to ensure that the "never instrument" attributes show up even if we
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// explicitly turn off XRay instrumentation.
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//
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/// -fno-xray-instrument is the default. It does not produce a CC1 option.
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// RUN: %clang_cc1 %s -std=c++11 -x c++ -emit-llvm -o - \
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// RUN: -triple x86_64-unknown-linux-gnu | FileCheck %s
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// RUN: %clang_cc1 %s -std=c++11 -x c++ -emit-llvm -o - \
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// RUN: -triple arm-unknown-linux-gnu -target-abi apcs-gnu | FileCheck %s
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// RUN: %clang_cc1 %s -std=c++11 -x c++ -emit-llvm -o - \
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// RUN: -triple mips-unknown-linux-gnu | FileCheck %s
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// RUN: %clang_cc1 %s -std=c++11 -x c++ -emit-llvm -o - \
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// RUN: -triple mipsel-unknown-linux-gnu | FileCheck %s
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// RUN: %clang_cc1 %s -std=c++11 -x c++ -emit-llvm -o - \
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// RUN: -triple mips64-unknown-linux-gnu | FileCheck %s
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// RUN: %clang_cc1 %s -std=c++11 -x c++ -emit-llvm -o - \
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// RUN: -triple mips64el-unknown-linux-gnu | FileCheck %s
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// RUN: %clang_cc1 %s -std=c++11 -x c++ -emit-llvm -o - \
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// RUN: -triple powerpc64le-unknown-linux-gnu | FileCheck %s
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[[clang::xray_always_instrument]] void foo() {
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// CHECK: define{{.*}} void @_Z3foov() #0
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}
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[[clang::xray_never_instrument]] void bar() {
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// CHECK: define{{.*}} void @_Z3barv() #1
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}
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// CHECK-NOT: #0 = {{.*}}"function-instrument"="xray-always"
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// CHECK: #1 = {{.*}}"function-instrument"="xray-never"
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