llvm-project

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// RUN: %clang_pgogen -mllvm -pgo-function-entry-coverage %s -o %t.out
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// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t.out
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// RUN: llvm-profdata merge -o %t.profdata %t.profraw
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// RUN: llvm-profdata show --covered %t.profdata | FileCheck %s --implicit-check-not goo
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// We deliberately merge the raw profile twice to test that internal counts can
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// grow larger than one. Technically, accumulating coverage values is different
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// than accumulating counts, but this helps discriminate cold functions from hot
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// functions when the number of raw profiles is large.
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// RUN: llvm-profdata merge -o %t2.profdata %t.profraw %t.profraw
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// RUN: llvm-profdata show %t2.profdata | FileCheck %s --check-prefix=COUNTS
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// RUN: %clang_cspgogen -O1 -mllvm -pgo-function-entry-coverage %s -o %t.cs.out
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// RUN: env LLVM_PROFILE_FILE=%t.csprofraw %run %t.cs.out
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// RUN: llvm-profdata merge -o %t.csprofdata %t.csprofraw
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// RUN: llvm-profdata show --covered %t.csprofdata --showcs | FileCheck %s --implicit-check-not goo
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// RUN: llvm-profdata merge -o %t2.csprofdata %t.csprofraw %t.csprofraw
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// RUN: llvm-profdata show --showcs %t2.csprofdata | FileCheck %s --check-prefix=COUNTS
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void markUsed(int a) {
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  volatile int g;
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  g = a;
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}
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__attribute__((noinline)) int foo(int i) { return 4 * i + 1; }
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__attribute__((noinline)) int bar(int i) { return 4 * i + 2; }
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__attribute__((noinline)) int goo(int i) { return 4 * i + 3; }
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int main(int argc, char *argv[]) {
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  markUsed(foo(5));
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  markUsed(argc ? bar(6) : goo(7));
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  return 0;
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}
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// CHECK-DAG: main
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// CHECK-DAG: foo
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// CHECK-DAG: bar
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// COUNTS: Maximum function count: 2
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