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| author | Xinliang David Li <davidxl@google.com> | 2016-08-09 04:21:14 +0000 |
|---|---|---|
| committer | Xinliang David Li <davidxl@google.com> | 2016-08-09 04:21:14 +0000 |
| commit | 662d5497c3a4fbcdbf125d109f4abe5a9385cc20 (patch) | |
| tree | 75caffb22007df93d6a22f8424a6ee34ffe3e2d0 /test/profile | |
| parent | 97809160002d2a275a04e62313e55f1607fde234 (diff) | |
[Profile] Implement new API __llvm_profile_dump
The API is intended to be used by user to do fine
grained (per-region) control of profile dumping.
Differential Revision: http://reviews.llvm.org/D23106
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@278092 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/profile')
| -rw-r--r-- | test/profile/instrprof-dump.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/test/profile/instrprof-dump.c b/test/profile/instrprof-dump.c new file mode 100644 index 000000000..93c3c46f6 --- /dev/null +++ b/test/profile/instrprof-dump.c @@ -0,0 +1,62 @@ +/* +RUN: rm -fr %t.profdir +RUN: %clang_profgen=%t.profdir/default_%m.profraw -o %t -O2 %s +RUN: %run %t 2>&1 | FileCheck %s --check-prefix=NO_EXIT_WRITE +RUN: llvm-profdata merge -o %t.profdata %t.profdir +RUN: %clang_profuse=%t.profdata -o - -S -emit-llvm %s | FileCheck %s --check-prefix=PROF + +NO_EXIT_WRITE: Profile data not written to file: already written +*/ + +int __llvm_profile_dump(void); +void __llvm_profile_reset_counters(void); +int foo(int); +int bar(int); +int skip(int); + +int main(int argc, const char *argv[]) { + int Ret = foo(0); /* region 1 */ + __llvm_profile_dump(); + + /* not profiled -- cleared later. */ + skip(0); /* skipped region */ + + __llvm_profile_reset_counters(); + Ret += bar(0); /* region 2 */ + __llvm_profile_dump(); + + skip(1); + + __llvm_profile_reset_counters(); + /* foo's profile will be merged. */ + foo(1); /* region 3 */ + __llvm_profile_dump(); + + return Ret; +} + +__attribute__((noinline)) int foo(int X) { + /* PROF: define {{.*}} @foo({{.*}}!prof ![[ENT:[0-9]+]] + PROF: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !prof ![[PD1:[0-9]+]] + */ + return X <= 0 ? -X : X; +} + +__attribute__((noinline)) int skip(int X) { + /* PROF: define {{.*}} @skip( + PROF: br i1 %{{.*}}, label %{{.*}}, label %{{[^,]+$}} + */ + return X <= 0 ? -X : X; +} + +__attribute__((noinline)) int bar(int X) { + /* PROF-LABEL: define {{.*}} @bar( + PROF: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !prof ![[PD2:[0-9]+]] + */ + return X <= 0 ? -X : X; +} + +/* +PROF: ![[ENT]] = !{!"function_entry_count", i64 2} +PROF: ![[PD1]] = !{!"branch_weights", i32 2, i32 2} +*/ |