30 lines
775 B
C++
30 lines
775 B
C++
// REQUIRES: target={{.*(darwin|aix).*}}
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// RUN: rm -f %t.profraw
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// RUN: %clangxx_pgogen_cont -lpthread %s -o %t.exe -mllvm -disable-vp -fprofile-update=atomic
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// RUN: env LLVM_PROFILE_FILE="%c%t.profraw" %run %t.exe
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// RUN: llvm-profdata show --counts --function=accum %t.profraw | FileCheck %s
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// CHECK: Block counts: [100000, 4]
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#include <thread>
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int x = 0;
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void accum(int n) {
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for (int i = 0; i < n; i++)
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x += i; // don't care about accuracy, no need for atomic.
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}
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int main() {
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int init_value = 10000;
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auto t1 = std::thread(accum, 1*init_value);
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auto t2 = std::thread(accum, 2*init_value);
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auto t3 = std::thread(accum, 3*init_value);
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auto t4 = std::thread(accum, 4*init_value);
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t1.join();
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t2.join();
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t3.join();
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t4.join();
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return !x;
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}
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