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add a mayLoad property for machine instructions, a correlary to mayStore.

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This is currently not set by anything.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45748 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2008-01-08 18:05:21 +00:00
parent e51775dc5e
commit dcc8b4f5d3
4 changed files with 23 additions and 15 deletions
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24
utils/TableGen/InstrInfoEmitter.cpp
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@@ -144,12 +144,12 @@ void InstrInfoEmitter::EmitOperandInfo(std::ostream &OS,
class InstAnalyzer {
const CodeGenDAGPatterns &CDP;
bool &mayStore;
bool &isLoad;
bool &mayLoad;
bool &NeverHasSideEffects;
public:
InstAnalyzer(const CodeGenDAGPatterns &cdp,
bool &maystore, bool &isload, bool &nhse)
: CDP(cdp), mayStore(maystore), isLoad(isload), NeverHasSideEffects(nhse) {
bool &maystore, bool &mayload, bool &nhse)
: CDP(cdp), mayStore(maystore), mayLoad(mayload), NeverHasSideEffects(nhse){
}
void Analyze(Record *InstRecord) {
@@ -166,9 +166,8 @@ public:
private:
void AnalyzeNode(const TreePatternNode *N) {
if (N->isLeaf()) {
if (N->isLeaf())
return;
}
if (N->getOperator()->getName() != "set") {
// Get information about the SDNode for the operator.
@@ -191,11 +190,11 @@ private:
};
void InstrInfoEmitter::InferFromPattern(const CodeGenInstruction &Inst,
bool &mayStore, bool &isLoad,
bool &mayStore, bool &mayLoad,
bool &NeverHasSideEffects) {
mayStore = isLoad = NeverHasSideEffects = false;
mayStore = mayLoad = NeverHasSideEffects = false;
InstAnalyzer(CDP, mayStore, isLoad, NeverHasSideEffects).Analyze(Inst.TheDef);
InstAnalyzer(CDP, mayStore, mayLoad,NeverHasSideEffects).Analyze(Inst.TheDef);
// InstAnalyzer only correctly analyzes mayStore so far.
if (Inst.mayStore) { // If the .td file explicitly sets mayStore, use it.
@@ -210,7 +209,7 @@ void InstrInfoEmitter::InferFromPattern(const CodeGenInstruction &Inst,
}
// These two override everything.
isLoad = Inst.isSimpleLoad;
mayLoad = Inst.mayLoad;
NeverHasSideEffects = Inst.neverHasSideEffects;
#if 0
@@ -281,8 +280,8 @@ void InstrInfoEmitter::emitRecord(const CodeGenInstruction &Inst, unsigned Num,
const OperandInfoMapTy &OpInfo,
std::ostream &OS) {
// Determine properties of the instruction from its pattern.
bool mayStore, isSimpleLoad, NeverHasSideEffects;
InferFromPattern(Inst, mayStore, isSimpleLoad, NeverHasSideEffects);
bool mayStore, mayLoad, NeverHasSideEffects;
InferFromPattern(Inst, mayStore, mayLoad, NeverHasSideEffects);
if (NeverHasSideEffects && Inst.mayHaveSideEffects) {
std::cerr << "error: Instruction '" << Inst.TheDef->getName()
@@ -308,7 +307,8 @@ void InstrInfoEmitter::emitRecord(const CodeGenInstruction &Inst, unsigned Num,
if (Inst.isBarrier) OS << "|(1<<TID::Barrier)";
if (Inst.hasDelaySlot) OS << "|(1<<TID::DelaySlot)";
if (Inst.isCall) OS << "|(1<<TID::Call)";
if (isSimpleLoad) OS << "|(1<<TID::SimpleLoad)";
if (Inst.isSimpleLoad) OS << "|(1<<TID::SimpleLoad)";
if (mayLoad) OS << "|(1<<TID::MayLoad)";
if (mayStore) OS << "|(1<<TID::MayStore)";
if (Inst.isImplicitDef)OS << "|(1<<TID::ImplicitDef)";
if (Inst.isPredicable) OS << "|(1<<TID::Predicable)";