Change optimize level to -O2, to avoid loopunswitch opt.

Signed-off-by: Yang Rong <rong.r.yang@intel.com>
Reviewed-by: Zhigang Gong <zhigang.gong@linux.intel.com>

diff --git a/backend/src/backend/program.cpp b/backend/src/backend/program.cpp
index ffd31d9..f05899e 100644 (file)
--- a/backend/src/backend/program.cpp
+++ b/backend/src/backend/program.cpp
@@ -475,7 +475,7 @@ namespace gbe {
     // XXX we haven't implement those builtin functions,
     // so disable it currently.
     args.push_back("-fno-builtin");
-    if(bOpt)  args.push_back("-O3");
+    if(bOpt)  args.push_back("-O2");
 #if LLVM_VERSION_MINOR <= 2
     args.push_back("-triple");
     args.push_back("nvptx");