Function temporaries can not overlap with retval or args.See the comment in source...

[oota-llvm.git] / lib / Target / PowerPC / PPCRegisterInfo.cpp

diff --git a/lib/Target/PowerPC/PPCRegisterInfo.cpp b/lib/Target/PowerPC/PPCRegisterInfo.cpp
index b7e3ac2824049b295abb3adb48179da294ce4598..18936918a93f3e43bcc1eb8b0192ae0bb10ef9e1 100644 (file)
--- a/lib/Target/PowerPC/PPCRegisterInfo.cpp
+++ b/lib/Target/PowerPC/PPCRegisterInfo.cpp
@@ -137,6 +137,15 @@ PPCRegisterInfo::PPCRegisterInfo(const PPCSubtarget &ST,
   ImmToIdxMap[PPC::ADDI8] = PPC::ADD8; ImmToIdxMap[PPC::STD_32] = PPC::STDX_32;
 }
 
+/// getPointerRegClass - Return the register class to use to hold pointers.
+/// This is used for addressing modes.
+const TargetRegisterClass *PPCRegisterInfo::getPointerRegClass() const {
+  if (Subtarget.isPPC64())
+    return &PPC::G8RCRegClass;
+  else
+    return &PPC::GPRCRegClass;
+}
+
 const unsigned*
 PPCRegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const {
   // 32-bit Darwin calling convention. 
@@ -893,7 +902,8 @@ void PPCRegisterInfo::determineFrameLayout(MachineFunction &MF) const {
   // If we are a leaf function, and use up to 224 bytes of stack space,
   // don't have a frame pointer, calls, or dynamic alloca then we do not need
   // to adjust the stack pointer (we fit in the Red Zone).
-  if (FrameSize <= 224 &&                          // Fits in red zone.
+  if (!DisableRedZone &&
+      FrameSize <= 224 &&                          // Fits in red zone.
       !MFI->hasVarSizedObjects() &&                // No dynamic alloca.
       !MFI->hasCalls() &&                          // No calls.
       (!ALIGN_STACK || MaxAlign <= TargetAlign)) { // No special alignment.