Abstract out the current optimization level into a flag that can be overridden

on the make line, to avoid bugs in native compilers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28457 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/Makefile.rules b/Makefile.rules
index c4148be9db81244fec26eea0cead9431ae0b838b..ac4a6fd66ecc3b1487f83d5788d4d30b4f06e0f3 100644 (file)
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -198,11 +198,15 @@ install-bytecode:: install-bytecode-local
 # Variables derived from configuration we are building
 #--------------------------------------------------------------------
 
+# OPTIMIZE_OPTION - The optimization level option we want to build LLVM with
+# this can be overridden on the make command line.
+OPTIMIZE_OPTION := -O3
+
 ifdef ENABLE_PROFILING
   BuildMode := Profile
-  CXX.Flags := -O3 -pg
-  C.Flags   := -O3 -pg
-  LD.Flags  := -O3 -pg 
+  CXX.Flags := $(OPTIMIZE_OPTION) -pg
+  C.Flags   := $(OPTIMIZE_OPTION) -pg
+  LD.Flags  := $(OPTIMIZE_OPTION) -pg 
 else
   ifdef ENABLE_OPTIMIZED
     BuildMode := Release
@@ -213,9 +217,9 @@ else
       OmitFramePointer := -fomit-frame-pointer
     endif
     endif
-    CXX.Flags := -O3 $(OmitFramePointer)
-    C.Flags   := -O3 $(OmitFramePointer)
-    LD.Flags  := -O3
+    CXX.Flags := $(OPTIMIZE_OPTION) $(OmitFramePointer)
+    C.Flags   := $(OPTIMIZE_OPTION) $(OmitFramePointer)
+    LD.Flags  := $(OPTIMIZE_OPTION)
   else
     BuildMode := Debug
     CXX.Flags := -g