6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-27 14:34:58 +00:00
Code Issues Projects Releases Wiki Activity

allow the address of a global to be used with the "i" constraint when in

Browse Source 
-static mode.  This implements PR882.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31326 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-10-31 20:13:11 +00:00
parent 0d92499455
commit 22aaf1d61c
2 changed files with 36 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
lib/Target/X86/X86ISelLowering.cpp
View File

@ -5466,6 +5466,36 @@ X86TargetLowering::getConstraintType(char ConstraintLetter) const {
}
}
/// isOperandValidForConstraint - Return the specified operand (possibly
/// modified) if the specified SDOperand is valid for the specified target
/// constraint letter, otherwise return null.
SDOperand X86TargetLowering::
isOperandValidForConstraint(SDOperand Op, char Constraint, SelectionDAG &DAG) {
switch (Constraint) {
default: break;
case 'i':
// Literal immediates are always ok.
if (isa<ConstantSDNode>(Op)) return Op;
// If we are in non-pic codegen mode, we allow the address of a global to
// be used with 'i'.
if (GlobalAddressSDNode *GA = dyn_cast<GlobalAddressSDNode>(Op)) {
if (getTargetMachine().getRelocationModel() == Reloc::PIC_)
return SDOperand(0, 0);
if (GA->getOpcode() != ISD::TargetGlobalAddress)
Op = DAG.getTargetGlobalAddress(GA->getGlobal(), GA->getValueType(0),
GA->getOffset());
return Op;
}
// Otherwise, not valid for this mode.
return SDOperand(0, 0);
}
return TargetLowering::isOperandValidForConstraint(Op, Constraint, DAG);
}
std::vector<unsigned> X86TargetLowering::
getRegClassForInlineAsmConstraint(const std::string &Constraint,
MVT::ValueType VT) const {

7
lib/Target/X86/X86ISelLowering.h
View File

@ -300,7 +300,12 @@ namespace llvm {
std::vector<unsigned>
getRegClassForInlineAsmConstraint(const std::string &Constraint,
MVT::ValueType VT) const;
/// isOperandValidForConstraint - Return the specified operand (possibly
/// modified) if the specified SDOperand is valid for the specified target
/// constraint letter, otherwise return null.
SDOperand isOperandValidForConstraint(SDOperand Op, char ConstraintLetter,
SelectionDAG &DAG);
/// getRegForInlineAsmConstraint - Given a physical register constraint
/// (e.g. {edx}), return the register number and the register class for the
/// register. This should only be used for C_Register constraints. On