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bef3b54ea1
In https://github.com/llvm/llvm-project/pull/109837, it sets a global variable(`PGOInstrumentColdFunctionOnly`) in PassBuilderPipelines.cpp which introduced a data race detected by TSan. To fix this, I decouple the flag setting, the flags are now set separately(`instrument-cold-function-only-path` is required to be used with `--pgo-instrument-cold-function-only`).
20 lines
581 B
C
20 lines
581 B
C
// Test -fprofile-generate-cold-function-coverage
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// RUN: rm -rf %t && split-file %s %t
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// RUN: %clang --target=x86_64 -O2 -fprofile-generate-cold-function-coverage=/xxx/yyy/ -fprofile-sample-accurate -fprofile-sample-use=%t/pgo-cold-func.prof -S -emit-llvm -o - %t/pgo-cold-func.c | FileCheck %s
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// CHECK: @__llvm_profile_filename = {{.*}} c"/xxx/yyy/default_%m.profraw\00"
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// CHECK: store i8 0, ptr @__profc_bar, align 1
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// CHECK-NOT: @__profc_foo
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//--- pgo-cold-func.prof
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foo:1:1
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1: 1
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//--- pgo-cold-func.c
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int bar(int x) { return x;}
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int foo(int x) {
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return x;
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}
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