derek.holloway
7502bf64a4
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45 lines
1.7 KiB
C++
45 lines
1.7 KiB
C++
// Tests for instrumentation of C++11 range-for
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// RUN: %clang_cc1 -x c++ %s -triple %itanium_abi_triple -main-file-name cxx-rangefor.cpp -std=c++11 -o - -emit-llvm -fprofile-instrument=clang > %tgen
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// RUN: FileCheck --input-file=%tgen -check-prefix=CHECK -check-prefix=PGOGEN %s
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// RUN: llvm-profdata merge %S/Inputs/cxx-rangefor.proftext -o %t.profdata
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// RUN: %clang_cc1 -x c++ %s -triple %itanium_abi_triple -main-file-name cxx-rangefor.cpp -std=c++11 -o - -emit-llvm -fprofile-instrument-use=clang -fprofile-instrument-use-path=%t.profdata > %tuse
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// RUN: FileCheck --input-file=%tuse -check-prefix=CHECK -check-prefix=PGOUSE %s
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// PGOGEN: @[[RFC:__profc__Z9range_forv]] = {{(private|internal)}} global [5 x i64] zeroinitializer
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// CHECK-LABEL: define {{.*}}void @_Z9range_forv()
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// PGOGEN: store {{.*}} @[[RFC]]
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void range_for() {
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int arr[] = {1, 2, 3, 4, 5};
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int sum = 0;
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// PGOGEN: store {{.*}} @[[RFC]], i32 0, i32 1
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// PGOUSE: br {{.*}} !prof ![[RF1:[0-9]+]]
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for (auto i : arr) {
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// PGOGEN: store {{.*}} @[[RFC]], i32 0, i32 2
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// PGOUSE: br {{.*}} !prof ![[RF2:[0-9]+]]
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if (i == 3)
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continue;
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sum += i;
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// PGOGEN: store {{.*}} @[[RFC]], i32 0, i32 3
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// PGOUSE: br {{.*}} !prof ![[RF3:[0-9]+]]
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if (sum >= 7)
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break;
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}
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// PGOGEN: store {{.*}} @[[RFC]], i32 0, i32 4
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// PGOUSE: br {{.*}} !prof ![[RF4:[0-9]+]]
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if (sum) {}
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}
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// PGOUSE-DAG: ![[RF1]] = !{!"branch_weights", i32 5, i32 1}
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// PGOUSE-DAG: ![[RF2]] = !{!"branch_weights", i32 2, i32 4}
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// PGOUSE-DAG: ![[RF3]] = !{!"branch_weights", i32 2, i32 3}
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// PGOUSE-DAG: ![[RF4]] = !{!"branch_weights", i32 2, i32 1}
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int main(int argc, const char *argv[]) {
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range_for();
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return 0;
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}
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