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cxx-lambda.cpp
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// Tests for instrumentation of C++11 lambdas
// RUN: %clang_cc1 -x c++ %s -triple %itanium_abi_triple -main-file-name cxx-lambda.cpp -std=c++11 -o - -emit-llvm -fprofile-instrument=clang > %tgen
// RUN: FileCheck --input-file=%tgen -check-prefix=PGOGEN %s
// RUN: FileCheck --input-file=%tgen -check-prefix=LMBGEN %s
// RUN: llvm-profdata merge %S/Inputs/cxx-lambda.proftext -o %t.profdata
// RUN: %clang_cc1 -x c++ %s -triple %itanium_abi_triple -main-file-name cxx-lambda.cpp -std=c++11 -o - -emit-llvm -fprofile-instrument-use-path=%t.profdata > %tuse
// RUN: FileCheck --input-file=%tuse -check-prefix=PGOUSE %s
// RUN: FileCheck --input-file=%tuse -check-prefix=LMBUSE %s
// PGOGEN: @[[LWC:__profc__Z7lambdasv]] = private global [4 x i64] zeroinitializer
// PGOGEN: @[[MAC:__profc_main]] = private global [1 x i64] zeroinitializer
// LMBGEN: @[[LFC:"__profc_cxx_lambda.cpp__ZZ7lambdasvENK3\$_0clEi"]] = private global [3 x i64] zeroinitializer
// PGOGEN-LABEL: define {{.*}}void @_Z7lambdasv()
// PGOUSE-LABEL: define {{.*}}void @_Z7lambdasv()
// PGOGEN: store {{.*}} @[[LWC]], i64 0, i64 0
void lambdas() {
int i = 1;
// LMBGEN-LABEL: define internal{{( [0-9_a-z]*cc)?( zeroext)?}} i1 @"_ZZ7lambdasvENK3$_0clEi"(
// LMBUSE-LABEL: define internal{{( [0-9_a-z]*cc)?( zeroext)?}} i1 @"_ZZ7lambdasvENK3$_0clEi"(
// LMBGEN: store {{.*}} @[[LFC]], i64 0, i64 0
auto f = [&i](int k) {
// LMBGEN: store {{.*}} @[[LFC]], i64 0, i64 1
// LMBUSE: br {{.*}} !prof ![[LF1:[0-9]+]]
if (i > 0) {}
// LMBGEN: store {{.*}} @[[LFC]], i64 0, i64 2
// LMBUSE: br {{.*}} !prof ![[LF2:[0-9]+]]
return k && i;
};
// PGOGEN: store {{.*}} @[[LWC]], i64 0, i64 1
// PGOUSE: br {{.*}} !prof ![[LW1:[0-9]+]]
if (i) {}
// PGOGEN: store {{.*}} @[[LWC]], i64 0, i64 2
// PGOUSE: br {{.*}} !prof ![[LW2:[0-9]+]]
for (i = 0; i < 10; ++i)
f(9 - i);
// PGOGEN: store {{.*}} @[[LWC]], i64 0, i64 3
// PGOUSE: br {{.*}} !prof ![[LW3:[0-9]+]]
if (i) {}
}
// PGOUSE-DAG: ![[LW1]] = !{!"branch_weights", i32 2, i32 1}
// PGOUSE-DAG: ![[LW2]] = !{!"branch_weights", i32 11, i32 2}
// PGOUSE-DAG: ![[LW3]] = !{!"branch_weights", i32 2, i32 1}
// LMBUSE-DAG: ![[LF1]] = !{!"branch_weights", i32 10, i32 2}
// LMBUSE-DAG: ![[LF2]] = !{!"branch_weights", i32 10, i32 2}
int main(int argc, const char *argv[]) {
lambdas();
return 0;
}