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Add support for the 'O' constraint.

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Patch by Jack Carter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156285 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher
2012-05-07 05:46:48 +00:00
parent 60cfc7908e
commit 1ce2034e43
3 changed files with 33 additions and 0 deletions
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11
lib/Target/Mips/MipsISelLowering.cpp
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@@ -3044,6 +3044,7 @@ MipsTargetLowering::getSingleConstraintMatchWeight(
case 'K': // unsigned 16 bit immediate
case 'L': // signed 32 bit immediate where lower 16 bits are 0
case 'N': // immediate in the range of -65535 to -1 (inclusive)
case 'O': // signed 15 bit immediate (+- 16383)
if (isa<ConstantInt>(CallOperandVal))
weight = CW_Constant;
break;
@@ -3146,6 +3147,16 @@ void MipsTargetLowering::LowerAsmOperandForConstraint(SDValue Op,
}
}
return;
case 'O': // signed 15 bit immediate
if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op)) {
EVT Type = Op.getValueType();
int64_t Val = C->getSExtValue();
if ((isInt<15>(Val))) {
Result = DAG.getTargetConstant(Val, Type);
break;
}
}
return;
}
if (Result.getNode()) {