9c6f1538cc
This patch changes cc1 option for PGO profile use from
-fprofile-instr-use=<path> to -fprofile-instrument-use-path=<path>.
-fprofile-instr-use=<path> is now a driver only option.
In addition to decouple the cc1 option from the driver level option, this patch
also enables IR level profile use. cc1 option handling now reads the profile
header and sets CodeGenOpt ProfileUse (valid values are {None, Clang, LLVM}
-- this is a common enum for -fprofile-instrument={}, for the profile
instrumentation), and invoke the pipeline to enable the respective PGO use pass.
Reviewers: silvas, davidxl
Differential Revision: http://reviews.llvm.org/D17737
llvm-svn: 262515
59 lines
2.3 KiB
C++
59 lines
2.3 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 --input-file=%tgen -check-prefix=PGOGEN %s
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// RUN: FileCheck --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 --input-file=%tuse -check-prefix=PGOUSE %s
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// RUN: FileCheck --input-file=%tuse -check-prefix=LMBUSE %s
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// PGOGEN: @[[LWC:__profc__Z7lambdasv]] = private global [4 x i64] zeroinitializer
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// PGOGEN: @[[MAC:__profc_main]] = private global [1 x i64] zeroinitializer
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// LMBGEN: @[[LFC:"__profc_cxx_lambda.cpp__ZZ7lambdasvENK3\$_0clEi"]] = private global [3 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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