set the ppc64 stack pointer right, dynamic alloca now works for ppc64
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31028 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp
index 09569a8..4285b68 100644
--- a/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -261,7 +261,11 @@
setSetCCResultType(MVT::i32);
setShiftAmountType(MVT::i32);
setSetCCResultContents(ZeroOrOneSetCCResult);
- setStackPointerRegisterToSaveRestore(PPC::R1);
+
+ if (TM.getSubtarget<PPCSubtarget>().isPPC64())
+ setStackPointerRegisterToSaveRestore(PPC::X1);
+ else
+ setStackPointerRegisterToSaveRestore(PPC::R1);
// We have target-specific dag combine patterns for the following nodes:
setTargetDAGCombine(ISD::SINT_TO_FP);