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[SelectionDAG] Redefine isGAPlusOffset in terms of unwrapAddress. NFCI. 

llvm-svn: 348288
This commit is contained in:
Nirav Dave 2018-12-04 17:59:43 +00:00
parent edaf2bcc77
commit ce26c27b2a
3 changed files with 4 additions and 19 deletions
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5
llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
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@ -2998,8 +2998,11 @@ SDValue TargetLowering::SimplifySetCC(EVT VT, SDValue N0, SDValue N1,
/// Returns true (and the GlobalValue and the offset) if the node is a
/// GlobalAddress + offset.
bool TargetLowering::isGAPlusOffset(SDNode *N, const GlobalValue *&GA,
bool TargetLowering::isGAPlusOffset(SDNode *WN, const GlobalValue *&GA,
int64_t &Offset) const {
SDNode *N = unwrapAddress(SDValue(WN, 0)).getNode();
if (auto *GASD = dyn_cast<GlobalAddressSDNode>(N)) {
GA = GASD->getGlobal();
Offset += GASD->getOffset();

15
llvm/lib/Target/X86/X86ISelLowering.cpp
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@ -30169,21 +30169,6 @@ SDValue X86TargetLowering::unwrapAddress(SDValue N) const {
return N;
}
/// Returns true (and the GlobalValue and the offset) if the node is a
/// GlobalAddress + offset.
bool X86TargetLowering::isGAPlusOffset(SDNode *N,
const GlobalValue* &GA,
int64_t &Offset) const {
if (N->getOpcode() == X86ISD::Wrapper) {
if (isa<GlobalAddressSDNode>(N->getOperand(0))) {
GA = cast<GlobalAddressSDNode>(N->getOperand(0))->getGlobal();
Offset = cast<GlobalAddressSDNode>(N->getOperand(0))->getOffset();
return true;
}
}
return TargetLowering::isGAPlusOffset(N, GA, Offset);
}
// Attempt to match a combined shuffle mask against supported unary shuffle
// instructions.
// TODO: Investigate sharing more of this with shuffle lowering.

3
llvm/lib/Target/X86/X86ISelLowering.h
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@ -877,9 +877,6 @@ namespace llvm {
SDValue unwrapAddress(SDValue N) const override;
bool isGAPlusOffset(SDNode *N, const GlobalValue* &GA,
int64_t &Offset) const override;
SDValue getReturnAddressFrameIndex(SelectionDAG &DAG) const;
bool ExpandInlineAsm(CallInst *CI) const override;