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Fix a bug in tblgen that caused incorrect encodings on instructions that specified operands with "bit" instead of "bits<1>".

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Unfortunately, my only testcase for this is fragile, and the ARM AsmParser can't round trip the instruction in question.
<rdar://problem/9345702>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130410 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2011-04-28 17:51:45 +00:00
parent d78bfbc6bb
commit 4cdcb4772d
1 changed files with 5 additions and 1 deletions
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6
utils/TableGen/CodeEmitterGen.cpp
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@ -63,10 +63,14 @@ void CodeEmitterGen::reverseBits(std::vector<Record*> &Insts) {
// return the variable bit position. Otherwise return -1. // return the variable bit position. Otherwise return -1.
int CodeEmitterGen::getVariableBit(const std::string &VarName, int CodeEmitterGen::getVariableBit(const std::string &VarName,
BitsInit *BI, int bit) { BitsInit *BI, int bit) {
if (VarBitInit *VBI = dynamic_cast<VarBitInit*>(BI->getBit(bit))) if (VarBitInit *VBI = dynamic_cast<VarBitInit*>(BI->getBit(bit))) {
if (VarInit *VI = dynamic_cast<VarInit*>(VBI->getVariable())) if (VarInit *VI = dynamic_cast<VarInit*>(VBI->getVariable()))
if (VI->getName() == VarName) if (VI->getName() == VarName)
return VBI->getBitNum(); return VBI->getBitNum();
} else if (VarInit *VI = dynamic_cast<VarInit*>(BI->getBit(bit))) {
if (VI->getName() == VarName)
return 0;
}
return -1; return -1;
} }