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Add information preventing several register class constraints from working.

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This implements PR828 and CodeGen/X86/2006-07-12-InlineAsmQConstraint.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29118 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-07-12 16:59:49 +00:00
parent 08c3f7b7c2
commit 6d3465793f
1 changed files with 9 additions and 1 deletions
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10
lib/Target/X86/X86ISelLowering.cpp
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@ -4140,7 +4140,15 @@ SDOperand X86TargetLowering::PerformDAGCombine(SDNode *N,
X86TargetLowering::ConstraintType
X86TargetLowering::getConstraintType(char ConstraintLetter) const {
switch (ConstraintLetter) {
case 'A': return C_RegisterClass;
case 'A':
case 'r':
case 'R':
case 'l':
case 'q':
case 'Q':
case 'x':
case 'Y':
return C_RegisterClass;
default: return TargetLowering::getConstraintType(ConstraintLetter);
}
}