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fix subtle bugs in inline asm operand selection 

llvm-svn: 37065
This commit is contained in:
Chris Lattner 2007-05-15 01:28:08 +00:00
parent 4d728b0419
commit c8798d085c
1 changed files with 4 additions and 3 deletions
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7
llvm/lib/Target/X86/X86ISelLowering.cpp
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@ -4725,18 +4725,19 @@ isOperandValidForConstraint(SDOperand Op, char Constraint, SelectionDAG &DAG) {
case 'I':
if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op)) {
if (C->getValue() <= 31)
return Op;
return DAG.getTargetConstant(C->getValue(), Op.getValueType());
}
return SDOperand(0,0);
case 'N':
if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op)) {
if (C->getValue() <= 255)
return Op;
return DAG.getTargetConstant(C->getValue(), Op.getValueType());
}
return SDOperand(0,0);
case 'i': {
// Literal immediates are always ok.
if (isa<ConstantSDNode>(Op)) return Op;
if (ConstantSDNode *CST = dyn_cast<ConstantSDNode>(Op))
return DAG.getTargetConstant(CST->getValue(), Op.getValueType());
// If we are in non-pic codegen mode, we allow the address of a global (with
// an optional displacement) to be used with 'i'.