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Change BitsInit to inherit from TypedInit.

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This is useful in a later patch where binary literals such as 0b000 will become BitsInit values instead of IntInit values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215085 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Pete Cooper
2014-08-07 05:47:04 +00:00
parent 42c1227fd9
commit 2093e2cb43
4 changed files with 29 additions and 5 deletions
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15
utils/TableGen/CodeGenInstruction.cpp
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@ -520,6 +520,21 @@ bool CodeGenInstAlias::tryAliasOpMatch(DagInit *Result, unsigned AliasOpNo,
return true;
}
// Bits<n> (also used for 0bxx literals)
if (BitsInit *BI = dyn_cast<BitsInit>(Arg)) {
if (hasSubOps || !InstOpRec->isSubClassOf("Operand"))
return false;
if (!BI->isComplete())
return false;
// Convert the bits init to an integer and use that for the result.
IntInit *II =
dyn_cast_or_null<IntInit>(BI->convertInitializerTo(IntRecTy::get()));
if (!II)
return false;
ResOp = ResultOperand(II->getValue());
return true;
}
// If both are Operands with the same MVT, allow the conversion. It's
// up to the user to make sure the values are appropriate, just like
// for isel Pat's.