Fast-math flags for the bitcode

Added in bitcode enum for the serializing of fast-math flags. Added in the reading/writing of fast-math flags from the OptimizationFlags record for BinaryOps.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168646 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Bitcode/LLVMBitCodes.h

@@ -240,6 +240,16 @@ namespace bitc {
     PEO_EXACT = 0
   };
 
+  /// Flags for serializing FPMathOperator's
+  /// SubclassOptionalData contents.
+  enum FastMathFlags {
+    FMF_UNSAFE_ALGEBRA   = 0,
+    FMF_NO_NANS          = 1,
+    FMF_NO_INFS          = 2,
+    FMF_NO_SIGNED_ZEROS  = 3,
+    FMF_ALLOW_RECIPROCAL = 4
+  };
+
   /// Encoded AtomicOrdering values.
   enum AtomicOrderingCodes {
     ORDERING_NOTATOMIC = 0,