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implement initial support for the silly X constraint. Testcase here: CodeGen/X86/2007-03-24-InlineAsmXConstraint.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35327 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1841,6 +1841,7 @@ TargetLowering::getConstraintType(const std::string &Constraint) const {
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case 'i': // Simple Integer or Relocatable Constant
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case 'n': // Simple Integer
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case 's': // Relocatable Constant
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case 'X': // Allow ANY value.
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case 'I': // Target registers.
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case 'J':
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case 'K':
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@ -1870,6 +1871,7 @@ SDOperand TargetLowering::isOperandValidForConstraint(SDOperand Op,
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case 'i': // Simple Integer or Relocatable Constant
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case 'n': // Simple Integer
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case 's': // Relocatable Constant
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case 'X': // Allows any operand.
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// These are okay if the operand is either a global variable address or a
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// simple immediate value. If we have one of these, map to the TargetXXX
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// version so that the value itself doesn't get selected.
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