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back out 104862/104869. Can reuse stacksave after all. Very cool.

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llvm-svn: 104897
This commit is contained in:
Jim Grosbach 2010-05-27 23:11:57 +00:00
parent b049874698
commit d788f9b580
5 changed files with 2 additions and 19 deletions
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3
include/llvm/CodeGen/ISDOpcodes.h
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@ -72,9 +72,6 @@ namespace ISD {
// parent's frame or return address, and so on.
FRAMEADDR, RETURNADDR,
// STACKADDR - The current stack pointer address.
STACKADDR,
// FRAME_TO_ARGS_OFFSET - This node represents offset from frame pointer to
// first (possible) on-stack argument. This is needed for correct stack
// adjustment during unwind.

5
include/llvm/Intrinsics.td
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@ -197,13 +197,12 @@ def int_gcwrite : Intrinsic<[],
def int_returnaddress : Intrinsic<[llvm_ptr_ty], [llvm_i32_ty], [IntrNoMem]>;
def int_frameaddress : Intrinsic<[llvm_ptr_ty], [llvm_i32_ty], [IntrNoMem]>;
// Note: we treat stacksave/stackrestore and stackaddr as writemem because we
// don't otherwise model their dependencies on allocas.
// Note: we treat stacksave/stackrestore as writemem because we don't otherwise
// model their dependencies on allocas.
def int_stacksave : Intrinsic<[llvm_ptr_ty]>,
GCCBuiltin<"__builtin_stack_save">;
def int_stackrestore : Intrinsic<[], [llvm_ptr_ty]>,
GCCBuiltin<"__builtin_stack_restore">;
def int_stackaddress : Intrinsic<[llvm_ptr_ty], []>;
// IntrWriteArgMem is more pessimistic than strictly necessary for prefetch,
// however it does conveniently prevent the prefetch from being reordered

4
lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
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@ -3756,10 +3756,6 @@ SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I, unsigned Intrinsic) {
setValue(&I, DAG.getNode(ISD::FRAMEADDR, dl, TLI.getPointerTy(),
getValue(I.getOperand(1))));
return 0;
case Intrinsic::stackaddress:
setValue(&I, DAG.getNode(ISD::STACKADDR, dl, TLI.getPointerTy(), getRoot(),
getValue(I.getOperand(1))));
return 0;
case Intrinsic::setjmp:
return "_setjmp"+!TLI.usesUnderscoreSetJmp();
case Intrinsic::longjmp:

8
lib/Target/ARM/ARMISelLowering.cpp
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@ -2183,13 +2183,6 @@ SDValue ARMTargetLowering::LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const {
return FrameAddr;
}
SDValue ARMTargetLowering::LowerSTACKADDR(SDValue Op, SelectionDAG &DAG) const {
EVT VT = Op.getValueType();
DebugLoc dl = Op.getDebugLoc(); // FIXME probably not meaningful
SDValue StackAddr = DAG.getCopyFromReg(DAG.getEntryNode(), dl, ARM::SP, VT);
return StackAddr;
}
/// ExpandBIT_CONVERT - If the target supports VFP, this function is called to
/// expand a bit convert where either the source or destination type is i64 to
/// use a VMOVDRR or VMOVRRD node. This should not be done when the non-i64
@ -3194,7 +3187,6 @@ SDValue ARMTargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) const {
case ISD::FCOPYSIGN: return LowerFCOPYSIGN(Op, DAG);
case ISD::RETURNADDR: return LowerRETURNADDR(Op, DAG);
case ISD::FRAMEADDR: return LowerFRAMEADDR(Op, DAG);
case ISD::STACKADDR: return LowerSTACKADDR(Op, DAG);
case ISD::GLOBAL_OFFSET_TABLE: return LowerGLOBAL_OFFSET_TABLE(Op, DAG);
case ISD::EH_SJLJ_SETJMP: return LowerEH_SJLJ_SETJMP(Op, DAG);
case ISD::EH_SJLJ_LONGJMP: return LowerEH_SJLJ_LONGJMP(Op, DAG);

1
lib/Target/ARM/ARMISelLowering.h
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@ -305,7 +305,6 @@ namespace llvm {
SDValue LowerBR_CC(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerRETURNADDR(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerSTACKADDR(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerDYNAMIC_STACKALLOC(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerShiftRightParts(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerShiftLeftParts(SDValue Op, SelectionDAG &DAG) const;