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Bug fix and minor clean up of generated code. 

llvm-svn: 42069
This commit is contained in:
Evan Cheng 2007-09-17 22:26:41 +00:00
parent 00064e1bab
commit ffd6995cc7
1 changed files with 18 additions and 29 deletions
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47
llvm/utils/TableGen/DAGISelEmitter.cpp
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@ -2649,7 +2649,6 @@ public:
/// we actually have to build a DAG!
std::vector<std::string>
EmitResultCode(TreePatternNode *N, std::vector<Record*> DstRegs,
bool RetSelected,
bool InFlagDecled, bool ResNodeDecled,
bool LikeLeaf = false, bool isRoot = false) {
// List of arguments of getTargetNode() or SelectNodeTo().
@ -2867,7 +2866,7 @@ public:
if ((!OperandNode->isSubClassOf("PredicateOperand") &&
!OperandNode->isSubClassOf("OptionalDefOperand")) ||
ISE.getDefaultOperand(OperandNode).DefaultOps.empty()) {
Ops = EmitResultCode(N->getChild(ChildNo), DstRegs, RetSelected,
Ops = EmitResultCode(N->getChild(ChildNo), DstRegs,
InFlagDecled, ResNodeDecled);
AllOps.insert(AllOps.end(), Ops.begin(), Ops.end());
++ChildNo;
@ -2877,7 +2876,7 @@ public:
const DAGDefaultOperand &DefaultOp =
ISE.getDefaultOperand(II.OperandList[InstOpNo].Rec);
for (unsigned i = 0, e = DefaultOp.DefaultOps.size(); i != e; ++i) {
Ops = EmitResultCode(DefaultOp.DefaultOps[i], DstRegs, RetSelected,
Ops = EmitResultCode(DefaultOp.DefaultOps[i], DstRegs,
InFlagDecled, ResNodeDecled);
AllOps.insert(AllOps.end(), Ops.begin(), Ops.end());
NumEAInputs += Ops.size();
@ -3039,11 +3038,11 @@ public:
if (NodeHasOutFlag) {
if (!InFlagDecled) {
emitCode("SDOperand InFlag(ResNode, " +
utostr(NumResults+NumDstRegs+(unsigned)NodeHasChain) + ");");
utostr(NumResults+NumDstRegs+(unsigned)NodeHasChain) + ");");
InFlagDecled = true;
} else
emitCode("InFlag = SDOperand(ResNode, " +
utostr(NumResults+NumDstRegs+(unsigned)NodeHasChain) + ");");
utostr(NumResults+NumDstRegs+(unsigned)NodeHasChain) + ");");
}
if (FoldedChains.size() > 0) {
@ -3058,20 +3057,15 @@ public:
if (NodeHasOutFlag) {
emitCode("ReplaceUses(SDOperand(N.Val, " +
utostr(NumPatResults + (unsigned)InputHasChain) +"), InFlag);");
utostr(NumPatResults + (unsigned)InputHasChain)
+"), InFlag);");
NeedReplace = true;
}
if (NeedReplace) {
for (unsigned i = 0; i < NumPatResults; i++)
emitCode("ReplaceUses(SDOperand(N.Val, " +
utostr(i) + "), SDOperand(ResNode, " + utostr(i) + "));");
if (InputHasChain)
emitCode("ReplaceUses(SDOperand(N.Val, " +
utostr(NumPatResults) + "), SDOperand(" + ChainName + ".Val, "
+ ChainName + ".ResNo" + "));");
} else
RetSelected = true;
if (NeedReplace && InputHasChain)
emitCode("ReplaceUses(SDOperand(N.Val, " +
utostr(NumPatResults) + "), SDOperand(" + ChainName
+ ".Val, " + ChainName + ".ResNo" + "));");
// User does not expect the instruction would produce a chain!
if ((!InputHasChain && NodeHasChain) && NodeHasOutFlag) {
@ -3081,18 +3075,11 @@ public:
if (NodeHasOutFlag)
emitCode("ReplaceUses(SDOperand(N.Val, " + utostr(NumPatResults+1) +
"), SDOperand(ResNode, N.ResNo-1));");
for (unsigned i = 0; i < NumPatResults; ++i)
emitCode("ReplaceUses(SDOperand(N.Val, " + utostr(i) +
"), SDOperand(ResNode, " + utostr(i) + "));");
emitCode("ReplaceUses(SDOperand(N.Val, " + utostr(NumPatResults) +
"), " + ChainName + ");");
RetSelected = false;
}
if (RetSelected)
emitCode("return ResNode;");
else
emitCode("return NULL;");
emitCode("return ResNode;");
} else {
std::string Code = "return CurDAG->SelectNodeTo(N.Val, Opc" +
utostr(OpcNo);
@ -3133,7 +3120,7 @@ public:
// PatLeaf node - the operand may or may not be a leaf node. But it should
// behave like one.
std::vector<std::string> Ops =
EmitResultCode(N->getChild(0), DstRegs, RetSelected, InFlagDecled,
EmitResultCode(N->getChild(0), DstRegs, InFlagDecled,
ResNodeDecled, true);
unsigned ResNo = TmpNo++;
emitCode("SDOperand Tmp" + utostr(ResNo) + " = Transform_" + Op->getName()
@ -3300,7 +3287,7 @@ void DAGISelEmitter::GenerateCodeForPattern(PatternToMatch &Pattern,
} while (Emitter.InsertOneTypeCheck(Pat, Pattern.getSrcPattern(), "N", true));
Emitter.EmitResultCode(Pattern.getDstPattern(), Pattern.getDstRegs(),
false, false, false, false, true);
false, false, false, true);
delete Pat;
}
@ -3957,9 +3944,11 @@ OS << " unsigned NumKilled = ISelKilled.size();\n";
OS << " RemoveKilled();\n";
OS << "}\n";
OS << "void ReplaceUses(SDNode *F, SDNode *T) DISABLE_INLINE {\n";
OS << " unsigned NumVals = F->getNumValues();\n";
OS << " if (NumVals < T->getNumValues()) {\n";
OS << " for (unsigned i = 0; i < NumVals; ++i)\n";
OS << " unsigned FNumVals = F->getNumValues();\n";
OS << " unsigned TNumVals = T->getNumValues();\n";
OS << " if (FNumVals != TNumVals) {\n";
OS << " for (unsigned i = 0, e = std::min(FNumVals, TNumVals); "
<< "i < e; ++i)\n";
OS << " CurDAG->ReplaceAllUsesOfValueWith(SDOperand(F, i), "
<< "SDOperand(T, i), ISelKilled);\n";
OS << " } else {\n";