X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=utils%2FTableGen%2FDAGISelMatcherGen.cpp;h=ed41631456b05d51b4cfac89159b1626eca63192;hb=1b0dc64919e947bb4f4677b138c734e33061f7c4;hp=aed222c094956c4f18f20c2215c6ad9af81f2593;hpb=ca578e7ba6b1e4ce955134e3fb1d5014942e5248;p=oota-llvm.git diff --git a/utils/TableGen/DAGISelMatcherGen.cpp b/utils/TableGen/DAGISelMatcherGen.cpp index aed222c0949..ed41631456b 100644 --- a/utils/TableGen/DAGISelMatcherGen.cpp +++ b/utils/TableGen/DAGISelMatcherGen.cpp @@ -10,10 +10,11 @@ #include "DAGISelMatcher.h" #include "CodeGenDAGPatterns.h" #include "CodeGenRegisters.h" -#include "llvm/TableGen/Record.h" #include "llvm/ADT/DenseMap.h" #include "llvm/ADT/SmallVector.h" #include "llvm/ADT/StringMap.h" +#include "llvm/TableGen/Error.h" +#include "llvm/TableGen/Record.h" #include using namespace llvm; @@ -172,15 +173,10 @@ void MatcherGen::InferPossibleTypes() { // diagnostics, which we know are impossible at this point. TreePattern &TP = *CGP.pf_begin()->second; - try { - bool MadeChange = true; - while (MadeChange) - MadeChange = PatWithNoTypes->ApplyTypeConstraints(TP, - true/*Ignore reg constraints*/); - } catch (...) { - errs() << "Type constraint application shouldn't fail!"; - abort(); - } + bool MadeChange = true; + while (MadeChange) + MadeChange = PatWithNoTypes->ApplyTypeConstraints(TP, + true/*Ignore reg constraints*/); } @@ -203,7 +199,7 @@ void MatcherGen::EmitLeafMatchCode(const TreePatternNode *N) { assert(N->isLeaf() && "Not a leaf?"); // Direct match against an integer constant. - if (IntInit *II = dynamic_cast(N->getLeafValue())) { + if (IntInit *II = dyn_cast(N->getLeafValue())) { // If this is the root of the dag we're matching, we emit a redundant opcode // check to ensure that this gets folded into the normal top-level // OpcodeSwitch. @@ -215,13 +211,30 @@ void MatcherGen::EmitLeafMatchCode(const TreePatternNode *N) { return AddMatcher(new CheckIntegerMatcher(II->getValue())); } - DefInit *DI = dynamic_cast(N->getLeafValue()); + // An UnsetInit represents a named node without any constraints. + if (N->getLeafValue() == UnsetInit::get()) { + assert(N->hasName() && "Unnamed ? leaf"); + return; + } + + DefInit *DI = dyn_cast(N->getLeafValue()); if (DI == 0) { errs() << "Unknown leaf kind: " << *N << "\n"; abort(); } Record *LeafRec = DI->getDef(); + + // A ValueType leaf node can represent a register when named, or itself when + // unnamed. + if (LeafRec->isSubClassOf("ValueType")) { + // A named ValueType leaf always matches: (add i32:$a, i32:$b). + if (N->hasName()) + return; + // An unnamed ValueType as in (sext_inreg GPR:$foo, i8). + return AddMatcher(new CheckValueTypeMatcher(LeafRec->getName())); + } + if (// Handle register references. Nothing to do here, they always match. LeafRec->isSubClassOf("RegisterClass") || LeafRec->isSubClassOf("RegisterOperand") || @@ -240,9 +253,6 @@ void MatcherGen::EmitLeafMatchCode(const TreePatternNode *N) { return; } - if (LeafRec->isSubClassOf("ValueType")) - return AddMatcher(new CheckValueTypeMatcher(LeafRec->getName())); - if (LeafRec->isSubClassOf("CondCode")) return AddMatcher(new CheckCondCodeMatcher(LeafRec->getName())); @@ -283,7 +293,7 @@ void MatcherGen::EmitOperatorMatchCode(const TreePatternNode *N, N->getOperator()->getName() == "or") && N->getChild(1)->isLeaf() && N->getChild(1)->getPredicateFns().empty() && N->getPredicateFns().empty()) { - if (IntInit *II = dynamic_cast(N->getChild(1)->getLeafValue())) { + if (IntInit *II = dyn_cast(N->getChild(1)->getLeafValue())) { if (!isPowerOf2_32(II->getValue())) { // Don't bother with single bits. // If this is at the root of the pattern, we emit a redundant // CheckOpcode so that the following checks get factored properly under @@ -572,14 +582,14 @@ void MatcherGen::EmitResultLeafAsOperand(const TreePatternNode *N, SmallVectorImpl &ResultOps) { assert(N->isLeaf() && "Must be a leaf"); - if (IntInit *II = dynamic_cast(N->getLeafValue())) { + if (IntInit *II = dyn_cast(N->getLeafValue())) { AddMatcher(new EmitIntegerMatcher(II->getValue(), N->getType(0))); ResultOps.push_back(NextRecordedOperandNo++); return; } // If this is an explicit register reference, handle it. - if (DefInit *DI = dynamic_cast(N->getLeafValue())) { + if (DefInit *DI = dyn_cast(N->getLeafValue())) { Record *Def = DI->getDef(); if (Def->isSubClassOf("Register")) { const CodeGenRegister *Reg = @@ -727,8 +737,7 @@ EmitResultInstructionAsOperand(const TreePatternNode *N, // Determine what to emit for this operand. Record *OperandNode = II.Operands[InstOpNo].Rec; - if ((OperandNode->isSubClassOf("PredicateOperand") || - OperandNode->isSubClassOf("OptionalDefOperand")) && + if (OperandNode->isSubClassOf("OperandWithDefaultOps") && !CGP.getDefaultOperand(OperandNode).DefaultOps.empty()) { // This is a predicate or optional def operand; emit the // 'default ops' operands. @@ -739,20 +748,33 @@ EmitResultInstructionAsOperand(const TreePatternNode *N, continue; } - const TreePatternNode *Child = N->getChild(ChildNo); - // Otherwise this is a normal operand or a predicate operand without // 'execute always'; emit it. - unsigned BeforeAddingNumOps = InstOps.size(); - EmitResultOperand(Child, InstOps); - assert(InstOps.size() > BeforeAddingNumOps && "Didn't add any operands"); - // If the operand is an instruction and it produced multiple results, just - // take the first one. - if (!Child->isLeaf() && Child->getOperator()->isSubClassOf("Instruction")) - InstOps.resize(BeforeAddingNumOps+1); + // For operands with multiple sub-operands we may need to emit + // multiple child patterns to cover them all. However, ComplexPattern + // children may themselves emit multiple MI operands. + unsigned NumSubOps = 1; + if (OperandNode->isSubClassOf("Operand")) { + DagInit *MIOpInfo = OperandNode->getValueAsDag("MIOperandInfo"); + if (unsigned NumArgs = MIOpInfo->getNumArgs()) + NumSubOps = NumArgs; + } + + unsigned FinalNumOps = InstOps.size() + NumSubOps; + while (InstOps.size() < FinalNumOps) { + const TreePatternNode *Child = N->getChild(ChildNo); + unsigned BeforeAddingNumOps = InstOps.size(); + EmitResultOperand(Child, InstOps); + assert(InstOps.size() > BeforeAddingNumOps && "Didn't add any operands"); - ++ChildNo; + // If the operand is an instruction and it produced multiple results, just + // take the first one. + if (!Child->isLeaf() && Child->getOperator()->isSubClassOf("Instruction")) + InstOps.resize(BeforeAddingNumOps+1); + + ++ChildNo; + } } // If this node has input glue or explicitly specified input physregs, we @@ -877,7 +899,7 @@ void MatcherGen::EmitResultOperand(const TreePatternNode *N, if (OpRec->isSubClassOf("SDNodeXForm")) return EmitResultSDNodeXFormAsOperand(N, ResultOps); errs() << "Unknown result node to emit code for: " << *N << '\n'; - throw std::string("Unknown node in result pattern!"); + PrintFatalError("Unknown node in result pattern!"); } void MatcherGen::EmitResultCode() {