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Provide proper stack offsets for outgoing arguments

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75945 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2009-07-16 13:51:53 +00:00
parent 4f9017f214
commit 656ac6f0f6
4 changed files with 16 additions and 7 deletions
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17
lib/Target/SystemZ/SystemZISelLowering.cpp
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@ -38,6 +38,8 @@ using namespace llvm;
SystemZTargetLowering::SystemZTargetLowering(SystemZTargetMachine &tm) :
TargetLowering(tm), Subtarget(*tm.getSubtargetImpl()), TM(tm) {
RegInfo = TM.getRegisterInfo();
// Set up the register classes.
addRegisterClass(MVT::i32, SystemZ::GR32RegisterClass);
addRegisterClass(MVT::i64, SystemZ::GR64RegisterClass);
@ -190,6 +192,7 @@ SDValue SystemZTargetLowering::LowerCCCCallTo(SDValue Op, SelectionDAG &DAG,
SDValue Callee = TheCall->getCallee();
bool isVarArg = TheCall->isVarArg();
DebugLoc dl = Op.getDebugLoc();
MachineFunction &MF = DAG.getMachineFunction();
// Analyze operands of the call, assigning locations to each operand.
SmallVector<CCValAssign, 16> ArgLocs;
@ -237,12 +240,16 @@ SDValue SystemZTargetLowering::LowerCCCCallTo(SDValue Op, SelectionDAG &DAG,
assert(VA.isMemLoc());
if (StackPtr.getNode() == 0)
StackPtr = DAG.getCopyFromReg(Chain, dl, SystemZ::R15D, getPointerTy());
SDValue PtrOff = DAG.getNode(ISD::ADD, dl, getPointerTy(),
StackPtr,
DAG.getIntPtrConstant(VA.getLocMemOffset()));
StackPtr =
DAG.getCopyFromReg(Chain, dl,
(RegInfo->hasFP(MF) ?
SystemZ::R11D : SystemZ::R15D),
getPointerTy());
SDValue PtrOff =
DAG.getNode(ISD::ADD, dl, getPointerTy(),
StackPtr,
DAG.getIntPtrConstant(160+VA.getLocMemOffset()));
MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, PtrOff,
PseudoSourceValue::getStack(),

2
lib/Target/SystemZ/SystemZISelLowering.h
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@ -16,6 +16,7 @@
#define LLVM_TARGET_SystemZ_ISELLOWERING_H
#include "SystemZ.h"
#include "SystemZRegisterInfo.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/Target/TargetLowering.h"
@ -61,6 +62,7 @@ namespace llvm {
private:
const SystemZSubtarget &Subtarget;
const SystemZTargetMachine &TM;
const SystemZRegisterInfo *RegInfo;
};
} // namespace llvm

2
lib/Target/SystemZ/SystemZInstrInfo.h
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@ -33,7 +33,7 @@ public:
/// such, whenever a client has an instance of instruction info, it should
/// always be able to get register info as well (through this method).
///
virtual const TargetRegisterInfo &getRegisterInfo() const { return RI; }
virtual const SystemZRegisterInfo &getRegisterInfo() const { return RI; }
bool copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
unsigned DestReg, unsigned SrcReg,

2
lib/Target/SystemZ/SystemZTargetMachine.h
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@ -48,7 +48,7 @@ public:
virtual const TargetData *getTargetData() const { return &DataLayout;}
virtual const SystemZSubtarget *getSubtargetImpl() const { return &Subtarget; }
virtual const TargetRegisterInfo *getRegisterInfo() const {
virtual const SystemZRegisterInfo *getRegisterInfo() const {
return &InstrInfo.getRegisterInfo();
}