[PGO] Add a test case for infinite loops

Differential Revision: http://reviews.llvm.org/D40663

llvm-svn: 319463
This commit is contained in:
Xinliang David Li 2017-11-30 19:37:56 +00:00
parent c23d2c6883
commit 8b97870c44
1 changed files with 30 additions and 0 deletions

View File

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// RUN: %clang_pgogen -O2 -o %t %s
// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t
// RUN: llvm-profdata show -function main -counts %t.profraw| FileCheck %s
void exit(int);
int g;
__attribute__((noinline)) void foo()
{
g++;
if (g==1000)
exit(0);
}
int main()
{
while (1) {
foo();
}
}
// CHECK: Counters:
// CHECK-NEXT: main:
// CHECK-NEXT: Hash: {{.*}}
// CHECK-NEXT: Counters: 1
// CHECK-NEXT: Block counts: [1000]