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da31b684a5
With `system-headers-coverage=false`, functions defined in system headers were not instrumented but corresponding covmaps were emitted. It caused wasting covmap and profraw. This change improves: - Reduce object size (due to reduced covmap) - Reduce size of profraw (uninstrumented system headers occupied counters) - Smarter view of coverage report. Stubs of uninstrumented system headers will be no longer seen.
51 lines
1.8 KiB
C++
51 lines
1.8 KiB
C++
// RUN: %clang_cc1 -mllvm -emptyline-comment-coverage=false -mllvm -system-headers-coverage=true -std=c++11 -fprofile-instrument=clang -fcoverage-mapping -dump-coverage-mapping -emit-llvm -main-file-name system_macro.cpp -o %t.w_sys.ll %s | FileCheck %s --check-prefixes=CHECK,W_SYS
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// RUN: %clang_cc1 -mllvm -emptyline-comment-coverage=false -mllvm -system-headers-coverage=false -std=c++11 -fprofile-instrument=clang -fcoverage-mapping -dump-coverage-mapping -emit-llvm -main-file-name system_macro.cpp -o %t.wosys.ll %s | FileCheck %s --check-prefixes=CHECK,WOSYS
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// RUN: FileCheck %s --check-prefixes=LL_CHECK,LL_W_SYS < %t.w_sys.ll
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// RUN: FileCheck %s --check-prefixes=LL_CHECK,LL_WOSYS < %t.wosys.ll
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// LL_CHECK: @__covrec_
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// LL_W_SYS: [[PROFC:@.*__profc_.*SysTmpl.*]] =
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// LL_W_SYS: @{{.*}}__profd_{{.*}}SysTmpl{{.*}} =
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// LL_WOSYS-NOT: SysTmpl
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// LL_CHECK: @llvm.used =
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#ifdef IS_SYSHEADER
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#pragma clang system_header
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#define Func(x) if (x) {}
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#define SomeType int
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// LL_CHECK: define {{.*}} i1 @{{.*}}SysTmpl
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template <bool f> bool SysTmpl() { return f; }
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// Check SysTmpl() is instrumented or not.
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// LL_W_SYS: load i64, ptr [[PROFC]],
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// LL_WOSYS-NOT: load i64, ptr @__profc_
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#else
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#define IS_SYSHEADER
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#include __FILE__
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// CHECK-LABEL: doSomething
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void doSomething(int x) { // CHECK: File 0, [[@LINE]]:25 -> {{[0-9:]+}} = #0
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// WOSYS-NOT: Expansion,
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// W_SYS: Expansion,File 0, [[@LINE+1]]:3 -> [[@LINE+1]]:7
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Func(x);
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// CHECK: Gap,File 0, [[@LINE+1]]:10
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return;
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// WOSYS-NOT: Expansion,
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// W_SYS: Expansion,File 0, [[@LINE+1]]:3 -> [[@LINE+1]]:11
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SomeType *f; // CHECK: File 0, [[@LINE]]:11 -> {{[0-9:]+}} = 0
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}
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// CHECK-LABEL: main
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int main() { // CHECK: File 0, [[@LINE]]:12 -> [[@LINE+2]]:2 = #0
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Func([] { return SysTmpl<true>(); }());
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}
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// W_SYS: SysTmpl
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// WOSYS-NOT: SysTmpl
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#endif
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