[llvm-commits] CVS: llvm/lib/Target/PowerPC/PPCISelLowering.h PPCISelLowering.cpp

[Nicolas Geoffray]

Changes in directory llvm/lib/Target/PowerPC:

PPCISelLowering.h updated: 1.60 -> 1.61
PPCISelLowering.cpp updated: 1.258 -> 1.259
---
Log message:

Implemented the frameaddress intrinsic for PPC.



---
Diffs of the changes:  (+25 -1)

 PPCISelLowering.cpp |   24 +++++++++++++++++++++++-
 PPCISelLowering.h   |    2 ++
 2 files changed, 25 insertions(+), 1 deletion(-)


Index: llvm/lib/Target/PowerPC/PPCISelLowering.h
diff -u llvm/lib/Target/PowerPC/PPCISelLowering.h:1.60 llvm/lib/Target/PowerPC/PPCISelLowering.h:1.61
--- llvm/lib/Target/PowerPC/PPCISelLowering.h:1.60	Tue Feb 27 07:01:19 2007
+++ llvm/lib/Target/PowerPC/PPCISelLowering.h	Thu Mar  1 07:11:38 2007
@@ -240,6 +240,8 @@
     /// as the offset of the target addressing mode.
     virtual bool isLegalAddressImmediate(int64_t V) const;
     virtual bool isLegalAddressImmediate(llvm::GlobalValue*) const;
+
+    SDOperand LowerFRAMEADDR(SDOperand Op, SelectionDAG &DAG);
   };
 }
 


Index: llvm/lib/Target/PowerPC/PPCISelLowering.cpp
diff -u llvm/lib/Target/PowerPC/PPCISelLowering.cpp:1.258 llvm/lib/Target/PowerPC/PPCISelLowering.cpp:1.259
--- llvm/lib/Target/PowerPC/PPCISelLowering.cpp:1.258	Tue Feb 27 07:01:19 2007
+++ llvm/lib/Target/PowerPC/PPCISelLowering.cpp	Thu Mar  1 07:11:38 2007
@@ -2700,7 +2700,7 @@
   
   // Frame & Return address.  Currently unimplemented
   case ISD::RETURNADDR:         break;
-  case ISD::FRAMEADDR:          break;
+  case ISD::FRAMEADDR:          return LowerFRAMEADDR(Op, DAG);
   }
   return SDOperand();
 }
@@ -3171,3 +3171,25 @@
 bool PPCTargetLowering::isLegalAddressImmediate(llvm::GlobalValue* GV) const {
   return TargetLowering::isLegalAddressImmediate(GV); 
 }
+
+SDOperand PPCTargetLowering::LowerFRAMEADDR(SDOperand Op, SelectionDAG &DAG)
+{
+  // Depths > 0 not supported yet! 
+  if (cast<ConstantSDNode>(Op.getOperand(0))->getValue() > 0)
+    return SDOperand();
+  
+  MVT::ValueType PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
+  bool isPPC64 = PtrVT == MVT::i64;
+  
+  MachineFunction &MF = DAG.getMachineFunction();
+  MachineFrameInfo *MFI = MF.getFrameInfo();
+  bool is31 = (NoFramePointerElim || MFI->hasVarSizedObjects()) 
+                  && MFI->getStackSize();
+
+  if (isPPC64)
+    return DAG.getCopyFromReg(DAG.getEntryNode(), is31 ? PPC::X31 : PPC::X1,
+      MVT::i32);
+  else
+    return DAG.getCopyFromReg(DAG.getEntryNode(), is31 ? PPC::R31 : PPC::R1,
+      MVT::i32);
+}