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llvm-project/clang/test/CoverageMapping/unused_names.c

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InstrProf: Add a test for PR22531 This is a test for the llvm change in r228793. We need to make sure that names referred to by coverage end up in the right section, or the coverage tools won't work. llvm-svn: 228794
2015-02-11 10:53:03 +08:00
// RUN: %clang_cc1 -fprofile-instr-generate -fcoverage-mapping -emit-llvm -main-file-name unused_names.c -o - %s > %t
// RUN: FileCheck -input-file %t %s
// RUN: FileCheck -check-prefix=SYSHEADER -input-file %t %s
InstrProf: Avoid creating profile names for symbols in system headers We don't emit any coverage mapping for uncovered functions that come from system headers, but we were creating a GlobalVariable with each of their names. This is wasteful since the linker will need to dead strip the unused symbols, and it can lead to issues when merging coverage with others TUs that do have coverage for those functions. llvm-svn: 226764
2015-01-22 10:17:23 +08:00
// Since foo is never emitted, there should not be a profile name for it.
InstrProf: Add a test for PR22531 This is a test for the llvm change in r228793. We need to make sure that names referred to by coverage end up in the right section, or the coverage tools won't work. llvm-svn: 228794
2015-02-11 10:53:03 +08:00
// CHECK-DAG: @__llvm_profile_name_bar = {{.*}} section "{{.*}}__llvm_prf_names"
// CHECK-DAG: @__llvm_profile_name_baz = {{.*}} section "{{.*}}__llvm_prf_names"
// CHECK-DAG: @"__llvm_profile_name_unused_names.c:qux" = {{.*}} section "{{.*}}__llvm_prf_names"
// SYSHEADER-NOT: @__llvm_profile_name_foo =
InstrProf: Avoid creating profile names for symbols in system headers We don't emit any coverage mapping for uncovered functions that come from system headers, but we were creating a GlobalVariable with each of their names. This is wasteful since the linker will need to dead strip the unused symbols, and it can lead to issues when merging coverage with others TUs that do have coverage for those functions. llvm-svn: 226764
2015-01-22 10:17:23 +08:00
#ifdef IS_SYSHEADER
#pragma clang system_header
inline int foo() { return 0; }
#else
#define IS_SYSHEADER
#include __FILE__
int bar() { return 0; }
InstrProf: Add a test for PR22531 This is a test for the llvm change in r228793. We need to make sure that names referred to by coverage end up in the right section, or the coverage tools won't work. llvm-svn: 228794
2015-02-11 10:53:03 +08:00
inline int baz() { return 0; }
static int qux() { return 42; }
InstrProf: Avoid creating profile names for symbols in system headers We don't emit any coverage mapping for uncovered functions that come from system headers, but we were creating a GlobalVariable with each of their names. This is wasteful since the linker will need to dead strip the unused symbols, and it can lead to issues when merging coverage with others TUs that do have coverage for those functions. llvm-svn: 226764
2015-01-22 10:17:23 +08:00
#endif