NCG: fix mkRegRegMoveInstr for x86-64

diff --git a/ghc/compiler/nativeGen/RegAllocInfo.hs b/ghc/compiler/nativeGen/RegAllocInfo.hs
index e5b4b14..98c4e2d 100644 (file)
--- a/ghc/compiler/nativeGen/RegAllocInfo.hs
+++ b/ghc/compiler/nativeGen/RegAllocInfo.hs
@@ -803,7 +803,11 @@ mkRegRegMoveInstr src dst
 #if i386_TARGET_ARCH || x86_64_TARGET_ARCH
     = case regClass src of
         RcInteger -> MOV wordRep (OpReg src) (OpReg dst)
+#if i386_TARGET_ARCH
         RcDouble  -> GMOV src dst
+#else
+        RcDouble  -> MOV F64 (OpReg src) (OpReg dst)
+#endif
 #elif powerpc_TARGET_ARCH
     = MR dst src
 #endif