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Revert this patch, the front-end has been fixed to make it unneccesary.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29752 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -4184,9 +4184,6 @@ X86TargetLowering::getConstraintType(char ConstraintLetter) const {
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case 'Q':
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case 'x':
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case 'Y':
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case 'S':
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case 'D':
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case 'c':
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return C_RegisterClass;
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default: return TargetLowering::getConstraintType(ConstraintLetter);
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}
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@ -4200,18 +4197,6 @@ getRegClassForInlineAsmConstraint(const std::string &Constraint,
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// FIXME: not handling MMX registers yet ('y' constraint).
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switch (Constraint[0]) { // GCC X86 Constraint Letters
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default: break; // Unknown constraint letter
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case 'S': // ESI
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if (VT == MVT::i32)
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return make_vector<unsigned>(X86::ESI,0);
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break;
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case 'D': // EDI
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if (VT == MVT::i32)
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return make_vector<unsigned>(X86::EDI,0);
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break;
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case 'c': // ECX
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if (VT == MVT::i32)
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return make_vector<unsigned>(X86::ECX, 0);
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break;
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case 'A': // EAX/EDX
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if (VT == MVT::i32 || VT == MVT::i64)
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return make_vector<unsigned>(X86::EAX, X86::EDX, 0);
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