From ce28cbb5077c068af4f24d1e04b8ddfa54a2261c Mon Sep 17 00:00:00 2001
From: Chris Bieneman <beanz@apple.com>
Date: Mon, 12 Oct 2015 21:13:20 +0000
Subject: [PATCH] [CMake] Adding support for passing in profiling data.

Adds LLVM_PROFDATA_FILE option to allow specifying a profile data file to be used during compilation of LLVM and subprojects.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@250108 91177308-0d34-0410-b5e6-96231b3b80d8
---
 CMakeLists.txt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3c7517eea0d..2a2291c7822 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -590,6 +590,13 @@ endif( ${CMAKE_SYSTEM_NAME} MATCHES SunOS )
 # use export_executable_symbols(target).
 set(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "")
 
+set(LLVM_PROFDATA_FILE "" CACHE FILEPATH
+  "Profiling data file to use when compiling in order to improve runtime performance.")
+
+if(LLVM_PROFDATA_FILE AND EXISTS ${LLVM_PROFDATA_FILE})
+  add_definitions("-fprofile-instr-use=${LLVM_PROFDATA_FILE}")
+endif()
+
 include(AddLLVM)
 include(TableGen)
 
-- 
2.34.1