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refactor some code into X86DAGToDAGISel::MatchWrapper

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68915 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2009-04-12 21:55:03 +00:00
parent 9f85634bd2
commit 49a168daae
1 changed files with 51 additions and 44 deletions
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95
lib/Target/X86/X86ISelDAGToDAG.cpp
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@ -162,6 +162,7 @@ namespace {
bool MatchSegmentBaseAddress(SDValue N, X86ISelAddressMode &AM);
bool MatchLoad(SDValue N, X86ISelAddressMode &AM);
bool MatchWrapper(SDValue N, X86ISelAddressMode &AM);
bool MatchAddress(SDValue N, X86ISelAddressMode &AM,
unsigned Depth = 0);
bool MatchAddressBase(SDValue N, X86ISelAddressMode &AM);
@ -782,6 +783,53 @@ bool X86DAGToDAGISel::MatchLoad(SDValue N, X86ISelAddressMode &AM) {
return true;
}
bool X86DAGToDAGISel::MatchWrapper(SDValue N, X86ISelAddressMode &AM) {
bool is64Bit = Subtarget->is64Bit();
DOUT << "Wrapper: 64bit " << is64Bit;
DOUT << " AM "; DEBUG(AM.dump()); DOUT << "\n";
// Under X86-64 non-small code model, GV (and friends) are 64-bits.
// Also, base and index reg must be 0 in order to use rip as base.
if (is64Bit && (TM.getCodeModel() != CodeModel::Small ||
AM.Base.Reg.getNode() || AM.IndexReg.getNode()))
return true;
if (AM.hasSymbolicDisplacement())
return true;
// If value is available in a register both base and index components have
// been picked, we can't fit the result available in the register in the
// addressing mode. Duplicate GlobalAddress or ConstantPool as displacement.
SDValue N0 = N.getOperand(0);
if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(N0)) {
uint64_t Offset = G->getOffset();
if (!is64Bit || isInt32(AM.Disp + Offset)) {
GlobalValue *GV = G->getGlobal();
AM.GV = GV;
AM.Disp += Offset;
AM.isRIPRel = TM.symbolicAddressesAreRIPRel();
return false;
}
} else if (ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(N0)) {
uint64_t Offset = CP->getOffset();
if (!is64Bit || isInt32(AM.Disp + Offset)) {
AM.CP = CP->getConstVal();
AM.Align = CP->getAlignment();
AM.Disp += Offset;
AM.isRIPRel = TM.symbolicAddressesAreRIPRel();
return false;
}
} else if (ExternalSymbolSDNode *S =dyn_cast<ExternalSymbolSDNode>(N0)) {
AM.ES = S->getSymbol();
AM.isRIPRel = TM.symbolicAddressesAreRIPRel();
return false;
} else if (JumpTableSDNode *J = dyn_cast<JumpTableSDNode>(N0)) {
AM.JT = J->getIndex();
AM.isRIPRel = TM.symbolicAddressesAreRIPRel();
return false;
}
return true;
}
/// MatchAddress - Add the specified node to the specified addressing mode,
/// returning true if it cannot be done. This just pattern matches for the
/// addressing mode.
@ -822,51 +870,10 @@ bool X86DAGToDAGISel::MatchAddress(SDValue N, X86ISelAddressMode &AM,
return false;
break;
case X86ISD::Wrapper: {
DOUT << "Wrapper: 64bit " << is64Bit;
DOUT << " AM "; DEBUG(AM.dump()); DOUT << "\n";
// Under X86-64 non-small code model, GV (and friends) are 64-bits.
// Also, base and index reg must be 0 in order to use rip as base.
if (is64Bit && (TM.getCodeModel() != CodeModel::Small ||
AM.Base.Reg.getNode() || AM.IndexReg.getNode()))
break;
if (AM.hasSymbolicDisplacement())
break;
// If value is available in a register both base and index components have
// been picked, we can't fit the result available in the register in the
// addressing mode. Duplicate GlobalAddress or ConstantPool as displacement.
{
SDValue N0 = N.getOperand(0);
if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(N0)) {
uint64_t Offset = G->getOffset();
if (!is64Bit || isInt32(AM.Disp + Offset)) {
GlobalValue *GV = G->getGlobal();
AM.GV = GV;
AM.Disp += Offset;
AM.isRIPRel = TM.symbolicAddressesAreRIPRel();
return false;
}
} else if (ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(N0)) {
uint64_t Offset = CP->getOffset();
if (!is64Bit || isInt32(AM.Disp + Offset)) {
AM.CP = CP->getConstVal();
AM.Align = CP->getAlignment();
AM.Disp += Offset;
AM.isRIPRel = TM.symbolicAddressesAreRIPRel();
return false;
}
} else if (ExternalSymbolSDNode *S =dyn_cast<ExternalSymbolSDNode>(N0)) {
AM.ES = S->getSymbol();
AM.isRIPRel = TM.symbolicAddressesAreRIPRel();
return false;
} else if (JumpTableSDNode *J = dyn_cast<JumpTableSDNode>(N0)) {
AM.JT = J->getIndex();
AM.isRIPRel = TM.symbolicAddressesAreRIPRel();
return false;
}
}
case X86ISD::Wrapper:
if (!MatchWrapper(N, AM))
return false;
break;
}
case ISD::LOAD:
if (!MatchLoad(N, AM))