9f2967bcfe
This is an enhancement to LLVM Source-Based Code Coverage in clang to track how many times individual branch-generating conditions are taken (evaluate to TRUE) and not taken (evaluate to FALSE). Individual conditions may comprise larger boolean expressions using boolean logical operators. This functionality is very similar to what is supported by GCOV except that it is very closely anchored to the ASTs. Differential Revision: https://reviews.llvm.org/D84467
59 lines
2.5 KiB
C++
59 lines
2.5 KiB
C++
// Tests for instrumentation of C++11 lambdas
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// 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
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// RUN: FileCheck -allow-deprecated-dag-overlap --input-file=%tgen -check-prefix=PGOGEN %s
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// RUN: FileCheck -allow-deprecated-dag-overlap --input-file=%tgen -check-prefix=LMBGEN %s
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// RUN: llvm-profdata merge %S/Inputs/cxx-lambda.proftext -o %t.profdata
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// 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
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// RUN: FileCheck -allow-deprecated-dag-overlap --input-file=%tuse -check-prefix=PGOUSE %s
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// RUN: FileCheck -allow-deprecated-dag-overlap --input-file=%tuse -check-prefix=LMBUSE %s
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// PGOGEN: @[[LWC:__profc__Z7lambdasv]] = {{(private|internal)}} global [4 x i64] zeroinitializer
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// PGOGEN: @[[MAC:__profc_main]] = {{(private|internal)}} global [1 x i64] zeroinitializer
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// LMBGEN: @[[LFC:"__profc_cxx_lambda.cpp__ZZ7lambdasvENK3\$_0clEi"]] = {{(private|internal)}} global [4 x i64] zeroinitializer
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// PGOGEN-LABEL: define {{.*}}void @_Z7lambdasv()
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// PGOUSE-LABEL: define {{.*}}void @_Z7lambdasv()
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// PGOGEN: store {{.*}} @[[LWC]], i64 0, i64 0
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void lambdas() {
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int i = 1;
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// LMBGEN-LABEL: define internal{{( [0-9_a-z]*cc)?( zeroext)?}} i1 @"_ZZ7lambdasvENK3$_0clEi"(
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// LMBUSE-LABEL: define internal{{( [0-9_a-z]*cc)?( zeroext)?}} i1 @"_ZZ7lambdasvENK3$_0clEi"(
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// LMBGEN: store {{.*}} @[[LFC]], i64 0, i64 0
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auto f = [&i](int k) {
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// LMBGEN: store {{.*}} @[[LFC]], i64 0, i64 1
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// LMBUSE: br {{.*}} !prof ![[LF1:[0-9]+]]
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if (i > 0) {}
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// LMBGEN: store {{.*}} @[[LFC]], i64 0, i64 2
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// LMBUSE: br {{.*}} !prof ![[LF2:[0-9]+]]
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return k && i;
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};
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// PGOGEN: store {{.*}} @[[LWC]], i64 0, i64 1
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// PGOUSE: br {{.*}} !prof ![[LW1:[0-9]+]]
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if (i) {}
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// PGOGEN: store {{.*}} @[[LWC]], i64 0, i64 2
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// PGOUSE: br {{.*}} !prof ![[LW2:[0-9]+]]
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for (i = 0; i < 10; ++i)
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f(9 - i);
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// PGOGEN: store {{.*}} @[[LWC]], i64 0, i64 3
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// PGOUSE: br {{.*}} !prof ![[LW3:[0-9]+]]
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if (i) {}
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}
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// PGOUSE-DAG: ![[LW1]] = !{!"branch_weights", i32 2, i32 1}
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// PGOUSE-DAG: ![[LW2]] = !{!"branch_weights", i32 11, i32 2}
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// PGOUSE-DAG: ![[LW3]] = !{!"branch_weights", i32 2, i32 1}
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// LMBUSE-DAG: ![[LF1]] = !{!"branch_weights", i32 10, i32 2}
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// LMBUSE-DAG: ![[LF2]] = !{!"branch_weights", i32 10, i32 2}
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int main(int argc, const char *argv[]) {
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lambdas();
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return 0;
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}
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