Use GR64 in 64-bit mode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42417 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp
index fdb259c..5607cad 100644 (file)
--- a/lib/Target/X86/X86RegisterInfo.cpp
+++ b/lib/Target/X86/X86RegisterInfo.cpp
@@ -299,7 +299,10 @@ void X86RegisterInfo::copyRegToReg(MachineBasicBlock &MBB,
 const TargetRegisterClass *
 X86RegisterInfo::getCrossCopyRegClass(const TargetRegisterClass *RC) const {
   if (RC == &X86::CCRRegClass)
-    return &X86::GR32RegClass;
+    if (Is64Bit)
+      return &X86::GR64RegClass;
+    else
+      return &X86::GR32RegClass;
   return NULL;
 }