x86_64: Fix calls to __morestack under the large code model.

[oota-llvm.git] / lib / Target / X86 / X86RegisterInfo.cpp

diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp
index a4a366da893c2737a6dd6b5ba796f3ebf682e054..09e651cebfb926122011d2d18e96e9c41c6a94ed 100644 (file)
--- a/lib/Target/X86/X86RegisterInfo.cpp
+++ b/lib/Target/X86/X86RegisterInfo.cpp
@@ -535,6 +535,14 @@ unsigned X86RegisterInfo::getFrameRegister(const MachineFunction &MF) const {
   return TFI->hasFP(MF) ? FramePtr : StackPtr;
 }
 
+unsigned X86RegisterInfo::getPtrSizedFrameRegister(
+    const MachineFunction &MF) const {
+  unsigned FrameReg = getFrameRegister(MF);
+  if (Subtarget.isTarget64BitILP32())
+    FrameReg = getX86SubSuperRegister(FrameReg, MVT::i32, false);
+  return FrameReg;
+}
+
 namespace llvm {
 unsigned getX86SubSuperRegister(unsigned Reg, MVT::SimpleValueType VT,
                                 bool High) {