commit ba9186c6fca2b8dd7885c909e7b1fd76c537c4ed
author Chandler Carruth <chandlerc@gmail.com> Tue Jan 03 02:46:46 2012 +0000
committer Chandler Carruth <chandlerc@gmail.com> Tue Jan 03 02:46:46 2012 +0000
tree 653edffc8ec8157bc44aea4ee78cfe618f52fe3f
parent a2d8669b09363d3d3a3c67982e08a38c8ed015d0

Teach the frontend to provide the builtin preprocessor defines for
-ffast-math.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147440 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Frontend/InitPreprocessor.cpp

diff --git a/lib/Frontend/InitPreprocessor.cpp b/lib/Frontend/InitPreprocessor.cpp
index f601f3d..74c2ec9 100644
--- a/lib/Frontend/InitPreprocessor.cpp
+++ b/lib/Frontend/InitPreprocessor.cpp
@@ -411,6 +411,9 @@
   if (LangOpts.OptimizeSize)
     Builder.defineMacro("__OPTIMIZE_SIZE__");
 
+  if (LangOpts.FastMath)
+    Builder.defineMacro("__FAST_MATH__");
+
   // Initialize target-specific preprocessor defines.
 
   // Define type sizing macros based on the target properties.