e9fe0a298c
When we instrument a program for profiling, we copy the linkage of an instrumented function so that our datastructures merge in the same way as the function. This avoids redundant copies for things like linkonce, but ends up emitting names we never need to reference for normal and internal symbols. Promoting internal and external linkage to private for these variables reduces the size overhead of profiling drastically. llvm-svn: 232799
22 lines
807 B
C++
22 lines
807 B
C++
// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9.0 -emit-llvm -main-file-name cxx-linkage.cpp %s -o - -fprofile-instr-generate | FileCheck %s
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// CHECK: @__llvm_profile_name__Z3foov = private constant [7 x i8] c"_Z3foov"
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// CHECK: @__llvm_profile_name__Z8foo_weakv = weak hidden constant [12 x i8] c"_Z8foo_weakv"
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// CHECK: @__llvm_profile_name_main = private constant [4 x i8] c"main"
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// CHECK: @__llvm_profile_name__Z10foo_inlinev = linkonce_odr hidden constant [15 x i8] c"_Z10foo_inlinev"
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void foo(void) { }
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void foo_weak(void) __attribute__((weak));
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void foo_weak(void) { if (0){} if (0){} if (0){} if (0){} }
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inline void foo_inline(void);
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int main(void) {
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foo();
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foo_inline();
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foo_weak();
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return 0;
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}
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inline void foo_inline(void) { if (0){} if (0){} if (0){} if (0){} if (0){} if (0){}}
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