forked from OSchip/llvm-project
63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
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/*
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RUN: rm -fr %t.profdir
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RUN: %clang_profgen=%t.profdir/default_%m.profraw -o %t -O2 %s
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RUN: %run %t 2>&1 | FileCheck %s --check-prefix=NO_EXIT_WRITE
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RUN: llvm-profdata merge -o %t.profdata %t.profdir
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RUN: %clang_profuse=%t.profdata -o - -S -emit-llvm %s | FileCheck %s --check-prefix=PROF
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NO_EXIT_WRITE: Profile data not written to file: already written
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*/
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int __llvm_profile_dump(void);
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void __llvm_profile_reset_counters(void);
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int foo(int);
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int bar(int);
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int skip(int);
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int main(int argc, const char *argv[]) {
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int Ret = foo(0); /* region 1 */
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__llvm_profile_dump();
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/* not profiled -- cleared later. */
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skip(0); /* skipped region */
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__llvm_profile_reset_counters();
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Ret += bar(0); /* region 2 */
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__llvm_profile_dump();
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skip(1);
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__llvm_profile_reset_counters();
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/* foo's profile will be merged. */
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foo(1); /* region 3 */
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__llvm_profile_dump();
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return Ret;
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}
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__attribute__((noinline)) int foo(int X) {
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/* PROF: define {{.*}} @foo({{.*}}!prof ![[ENT:[0-9]+]]
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PROF: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !prof ![[PD1:[0-9]+]]
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*/
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return X <= 0 ? -X : X;
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}
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__attribute__((noinline)) int skip(int X) {
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/* PROF: define {{.*}} @skip(
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PROF: br i1 %{{.*}}, label %{{.*}}, label %{{[^,]+$}}
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*/
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return X <= 0 ? -X : X;
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}
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__attribute__((noinline)) int bar(int X) {
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/* PROF-LABEL: define {{.*}} @bar(
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PROF: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !prof ![[PD2:[0-9]+]]
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*/
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return X <= 0 ? -X : X;
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}
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/*
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PROF: ![[ENT]] = !{!"function_entry_count", i64 2}
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PROF: ![[PD1]] = !{!"branch_weights", i32 2, i32 2}
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*/
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