[Beignet] [PATCH] Add -cl-fast-relaxed-math into incompatible opts and fix the PreprocessorOptions bug

[junyan.he at inbox.com]

From: Junyan He <junyan.he at linux.intel.com>

Signed-off-by: Junyan He <junyan.he at linux.intel.com>
---
 backend/src/backend/program.cpp |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/backend/src/backend/program.cpp b/backend/src/backend/program.cpp
index 3ab1bc2..571a17b 100644
--- a/backend/src/backend/program.cpp
+++ b/backend/src/backend/program.cpp
@@ -563,7 +563,7 @@ namespace gbe {
     clang::LangOptions & lang_opts = Clang.getLangOpts();
     lang_opts.OpenCL = 1;
 
-    clang::PreprocessorOptions prep_opt = Clang.getPreprocessorOpts();
+    clang::PreprocessorOptions& prep_opt = Clang.getPreprocessorOpts();
     prep_opt.DisablePCHValidation = 1;
 
     //llvm flags need command line parsing to take effect
@@ -697,6 +697,7 @@ namespace gbe {
       const char * incompatible_opts[] = {
           "-cl-single-precision-constant",
 //        "-cl-denorms-are-zero",
+          "-cl-fast-relaxed-math",
           "-cl-std=",
       };
       const char * incompatible_defs[] = {
-- 
1.7.9.5