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Third time's the charm for implementing tied operand decoding properly.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136478 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2011-07-29 18:28:52 +00:00
parent 2b9c50776a
commit ea2429896a
1 changed files with 6 additions and 6 deletions
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12
utils/TableGen/FixedLenDecoderEmitter.cpp
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@ -1225,11 +1225,13 @@ static bool populateInstruction(const CodeGenInstruction &CGI,
// Search for tied operands, so that we can correctly instantiate
// operands that are not explicitly represented in the encoding.
std::map<Init*, std::string> TiedNames;
std::map<std::string, std::string> TiedNames;
for (unsigned i = 0; i < CGI.Operands.size(); ++i) {
int tiedTo = CGI.Operands[i].getTiedRegister();
if (tiedTo != -1)
TiedNames[InOutOperands[i].first] = InOutOperands[tiedTo].second;
if (tiedTo != -1) {
TiedNames[InOutOperands[i].second] = InOutOperands[tiedTo].second;
TiedNames[InOutOperands[tiedTo].second] = InOutOperands[i].second;
}
}
// For each operand, see if we can figure out where it is encoded.
@ -1265,8 +1267,6 @@ static bool populateInstruction(const CodeGenInstruction &CGI,
unsigned Offset = 0;
for (unsigned bi = 0; bi < Bits.getNumBits(); ++bi) {
std::string name = NI->second;
std::string altname = TiedNames[NI->first];
VarBitInit *BI = dynamic_cast<VarBitInit*>(Bits.getBit(bi));
if (!BI) {
if (Base != ~0U) {
@ -1281,7 +1281,7 @@ static bool populateInstruction(const CodeGenInstruction &CGI,
VarInit *Var = dynamic_cast<VarInit*>(BI->getVariable());
assert(Var);
if (Var->getName() != NI->second &&
Var->getName() != TiedNames[NI->first]) {
Var->getName() != TiedNames[NI->second]) {
if (Base != ~0U) {
OpInfo.addField(Base, Width, Offset);
Base = ~0U;