[PGO] Add API for profile merge from buffer

Differential Revision: http://reviews.llvm.org/D17831


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@262644 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 0 deletions

diff --git a/lib/profile/InstrProfiling.h b/lib/profile/InstrProfiling.h
index fdb8a704f..fe6ec36e4 100644
--- a/lib/profile/InstrProfiling.h
+++ b/lib/profile/InstrProfiling.h
@@ -63,6 +63,15 @@ uint64_t *__llvm_profile_end_counters(void);
 void __llvm_profile_reset_counters(void);
 
 /*!
+ * \brief Read profile data form buffer and merge with
+ * in-process profile counters. The client is expected to
+ * have checked or already knows the profile data in the
+ * buffer matches the in-process counter structure before
+ * calling it.
+ */
+void __llvm_profile_merge_from_buffer(const char *Profile, uint64_t Size);
+
+/*!
  * \brief Counts the number of times a target value is seen.
  *
  * Records the target value for the CounterIndex if not seen before. Otherwise,