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llvm-project/clang/test/Profile/cxx-linkage.cpp

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PGO: Statically generate data structures In instrumentation-based profiling, we need a set of data structures to represent the counters. Previously, these were built up during static initialization. Now, they're shoved into a specially-named section so that they show up as an array. As a consequence of the reorganizing symbols, instrumentation data structures for linkonce functions are now correctly coalesced. This is the first step in a larger project to minimize runtime overhead and dependencies in instrumentation-based profilng. The larger picture includes removing all initialization overhead and making the dependency on libc optional. <rdar://problem/15943240> llvm-svn: 204080
2014-03-18 05:18:30 +08:00
// 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
[PGO] test case cleanups 1. Make test case more focused and robust by focusing on what to be tested (linkage, icall) -- make it easier to validate 2. Testing linkages of data and counter variables instead of names. Counters and data are more relavant to be tested. llvm-svn: 259067
2016-01-29 02:25:53 +08:00
// CHECK: @__profc__Z3foov = private global
// CHECK: @__profd__Z3foov = private global
// CHECK: @__profc__Z8foo_weakv = weak hidden global
// CHECK: @__profd__Z8foo_weakv = weak hidden global
// CHECK: @__profc_main = private global
// CHECK: @__profd_main = private global
// CHECK: @__profc__Z10foo_inlinev = linkonce_odr hidden global
// CHECK: @__profd__Z10foo_inlinev = linkonce_odr hidden global
InstrProf: Use LLVM's -instrprof pass for profiling The logic for lowering profiling counters has been moved to an LLVM pass. Emit the intrinsics rather than duplicating the whole pass in clang. llvm-svn: 223683
2014-12-09 03:04:51 +08:00
PGO: Statically generate data structures In instrumentation-based profiling, we need a set of data structures to represent the counters. Previously, these were built up during static initialization. Now, they're shoved into a specially-named section so that they show up as an array. As a consequence of the reorganizing symbols, instrumentation data structures for linkonce functions are now correctly coalesced. This is the first step in a larger project to minimize runtime overhead and dependencies in instrumentation-based profilng. The larger picture includes removing all initialization overhead and making the dependency on libc optional. <rdar://problem/15943240> llvm-svn: 204080
2014-03-18 05:18:30 +08:00
void foo(void) { }
void foo_weak(void) __attribute__((weak));
void foo_weak(void) { if (0){} if (0){} if (0){} if (0){} }
inline void foo_inline(void);
int main(void) {
foo();
foo_inline();
foo_weak();
return 0;
}
inline void foo_inline(void) { if (0){} if (0){} if (0){} if (0){} if (0){} if (0){}}