Generate fpmath metadata when -ffast-math. Note that no optimizations are hooked
up to this yet.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154835 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CodeGenFunction.cpp b/lib/CodeGen/CodeGenFunction.cpp
index 9cbba06..f4b483b 100644
--- a/lib/CodeGen/CodeGenFunction.cpp
+++ b/lib/CodeGen/CodeGenFunction.cpp
@@ -22,8 +22,9 @@
#include "clang/AST/DeclCXX.h"
#include "clang/AST/StmtCXX.h"
#include "clang/Frontend/CodeGenOptions.h"
-#include "llvm/Target/TargetData.h"
#include "llvm/Intrinsics.h"
+#include "llvm/Support/MDBuilder.h"
+#include "llvm/Target/TargetData.h"
using namespace clang;
using namespace CodeGen;
@@ -41,6 +42,10 @@
TerminateHandler(0), TrapBB(0) {
CatchUndefined = getContext().getLangOpts().CatchUndefined;
+ if (getContext().getLangOpts().FastMath) {
+ llvm::MDBuilder MDHelper(Builder.getContext());
+ Builder.SetDefaultFPMathTag(MDHelper.createFastFPMath());
+ }
CGM.getCXXABI().getMangleContext().startNewFunction();
}