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-rw-r--r--lib/Transforms/InstCombine/InstCombine.h107
1 files changed, 54 insertions, 53 deletions
diff --git a/lib/Transforms/InstCombine/InstCombine.h b/lib/Transforms/InstCombine/InstCombine.h
index 822e146..e04b1be 100644
--- a/lib/Transforms/InstCombine/InstCombine.h
+++ b/lib/Transforms/InstCombine/InstCombine.h
@@ -20,34 +20,38 @@
#include "llvm/Pass.h"
#include "llvm/Transforms/Utils/SimplifyLibCalls.h"
+#define DEBUG_TYPE "instcombine"
+
namespace llvm {
- class CallSite;
- class DataLayout;
- class TargetLibraryInfo;
- class DbgDeclareInst;
- class MemIntrinsic;
- class MemSetInst;
+class CallSite;
+class DataLayout;
+class TargetLibraryInfo;
+class DbgDeclareInst;
+class MemIntrinsic;
+class MemSetInst;
/// SelectPatternFlavor - We can match a variety of different patterns for
/// select operations.
enum SelectPatternFlavor {
SPF_UNKNOWN = 0,
- SPF_SMIN, SPF_UMIN,
- SPF_SMAX, SPF_UMAX
- //SPF_ABS - TODO.
+ SPF_SMIN,
+ SPF_UMIN,
+ SPF_SMAX,
+ SPF_UMAX
+ // SPF_ABS - TODO.
};
/// getComplexity: Assign a complexity or rank value to LLVM Values...
/// 0 -> undef, 1 -> Const, 2 -> Other, 3 -> Arg, 3 -> Unary, 4 -> OtherInst
static inline unsigned getComplexity(Value *V) {
if (isa<Instruction>(V)) {
- if (BinaryOperator::isNeg(V) ||
- BinaryOperator::isFNeg(V) ||
+ if (BinaryOperator::isNeg(V) || BinaryOperator::isFNeg(V) ||
BinaryOperator::isNot(V))
return 3;
return 4;
}
- if (isa<Argument>(V)) return 3;
+ if (isa<Argument>(V))
+ return 3;
return isa<Constant>(V) ? (isa<UndefValue>(V) ? 0 : 1) : 2;
}
@@ -60,18 +64,18 @@ static inline Constant *SubOne(Constant *C) {
return ConstantExpr::getSub(C, ConstantInt::get(C->getType(), 1));
}
-
/// InstCombineIRInserter - This is an IRBuilder insertion helper that works
/// just like the normal insertion helper, but also adds any new instructions
/// to the instcombine worklist.
class LLVM_LIBRARY_VISIBILITY InstCombineIRInserter
: public IRBuilderDefaultInserter<true> {
InstCombineWorklist &Worklist;
+
public:
InstCombineIRInserter(InstCombineWorklist &WL) : Worklist(WL) {}
- void InsertHelper(Instruction *I, const Twine &Name,
- BasicBlock *BB, BasicBlock::iterator InsertPt) const {
+ void InsertHelper(Instruction *I, const Twine &Name, BasicBlock *BB,
+ BasicBlock::iterator InsertPt) const {
IRBuilderDefaultInserter<true>::InsertHelper(I, Name, BB, InsertPt);
Worklist.Add(I);
}
@@ -79,13 +83,14 @@ public:
/// InstCombiner - The -instcombine pass.
class LLVM_LIBRARY_VISIBILITY InstCombiner
- : public FunctionPass,
- public InstVisitor<InstCombiner, Instruction*> {
+ : public FunctionPass,
+ public InstVisitor<InstCombiner, Instruction *> {
const DataLayout *DL;
TargetLibraryInfo *TLI;
bool MadeIRChange;
LibCallSimplifier *Simplifier;
bool MinimizeSize;
+
public:
/// Worklist - All of the instructions that need to be simplified.
InstCombineWorklist Worklist;
@@ -96,7 +101,7 @@ public:
BuilderTy *Builder;
static char ID; // Pass identification, replacement for typeid
- InstCombiner() : FunctionPass(ID), DL(0), Builder(0) {
+ InstCombiner() : FunctionPass(ID), DL(nullptr), Builder(nullptr) {
MinimizeSize = false;
initializeInstCombinerPass(*PassRegistry::getPassRegistry());
}
@@ -144,9 +149,9 @@ public:
Instruction *visitAnd(BinaryOperator &I);
Value *FoldOrOfICmps(ICmpInst *LHS, ICmpInst *RHS);
Value *FoldOrOfFCmps(FCmpInst *LHS, FCmpInst *RHS);
- Instruction *FoldOrWithConstants(BinaryOperator &I, Value *Op,
- Value *A, Value *B, Value *C);
- Instruction *visitOr (BinaryOperator &I);
+ Instruction *FoldOrWithConstants(BinaryOperator &I, Value *Op, Value *A,
+ Value *B, Value *C);
+ Instruction *visitOr(BinaryOperator &I);
Instruction *visitXor(BinaryOperator &I);
Instruction *visitShl(BinaryOperator &I);
Instruction *visitAShr(BinaryOperator &I);
@@ -156,12 +161,11 @@ public:
Constant *RHSC);
Instruction *FoldCmpLoadFromIndexedGlobal(GetElementPtrInst *GEP,
GlobalVariable *GV, CmpInst &ICI,
- ConstantInt *AndCst = 0);
+ ConstantInt *AndCst = nullptr);
Instruction *visitFCmpInst(FCmpInst &I);
Instruction *visitICmpInst(ICmpInst &I);
Instruction *visitICmpInstWithCastAndCast(ICmpInst &ICI);
- Instruction *visitICmpInstWithInstAndIntCst(ICmpInst &ICI,
- Instruction *LHS,
+ Instruction *visitICmpInstWithInstAndIntCst(ICmpInst &ICI, Instruction *LHS,
ConstantInt *RHS);
Instruction *FoldICmpDivCst(ICmpInst &ICI, BinaryOperator *DivI,
ConstantInt *DivRHS);
@@ -171,7 +175,7 @@ public:
ICmpInst::Predicate Pred);
Instruction *FoldGEPICmp(GEPOperator *GEPLHS, Value *RHS,
ICmpInst::Predicate Cond, Instruction &I);
- Instruction *FoldShiftByConstant(Value *Op0, ConstantInt *Op1,
+ Instruction *FoldShiftByConstant(Value *Op0, Constant *Op1,
BinaryOperator &I);
Instruction *commonCastTransforms(CastInst &CI);
Instruction *commonPointerCastTransforms(CastInst &CI);
@@ -188,9 +192,8 @@ public:
Instruction *visitIntToPtr(IntToPtrInst &CI);
Instruction *visitBitCast(BitCastInst &CI);
Instruction *visitAddrSpaceCast(AddrSpaceCastInst &CI);
- Instruction *FoldSelectOpOp(SelectInst &SI, Instruction *TI,
- Instruction *FI);
- Instruction *FoldSelectIntoOp(SelectInst &SI, Value*, Value*);
+ Instruction *FoldSelectOpOp(SelectInst &SI, Instruction *TI, Instruction *FI);
+ Instruction *FoldSelectIntoOp(SelectInst &SI, Value *, Value *);
Instruction *FoldSPFofSPF(Instruction *Inner, SelectPatternFlavor SPF1,
Value *A, Value *B, Instruction &Outer,
SelectPatternFlavor SPF2, Value *C);
@@ -209,6 +212,7 @@ public:
Instruction *visitStoreInst(StoreInst &SI);
Instruction *visitBranchInst(BranchInst &BI);
Instruction *visitSwitchInst(SwitchInst &SI);
+ Instruction *visitInsertValueInst(InsertValueInst &IV);
Instruction *visitInsertElementInst(InsertElementInst &IE);
Instruction *visitExtractElementInst(ExtractElementInst &EI);
Instruction *visitShuffleVectorInst(ShuffleVectorInst &SVI);
@@ -216,21 +220,21 @@ public:
Instruction *visitLandingPadInst(LandingPadInst &LI);
// visitInstruction - Specify what to return for unhandled instructions...
- Instruction *visitInstruction(Instruction &I) { return 0; }
+ Instruction *visitInstruction(Instruction &I) { return nullptr; }
private:
bool ShouldChangeType(Type *From, Type *To) const;
Value *dyn_castNegVal(Value *V) const;
- Value *dyn_castFNegVal(Value *V, bool NoSignedZero=false) const;
+ Value *dyn_castFNegVal(Value *V, bool NoSignedZero = false) const;
Type *FindElementAtOffset(Type *PtrTy, int64_t Offset,
- SmallVectorImpl<Value*> &NewIndices);
+ SmallVectorImpl<Value *> &NewIndices);
Instruction *FoldOpIntoSelect(Instruction &Op, SelectInst *SI);
/// ShouldOptimizeCast - Return true if the cast from "V to Ty" actually
/// results in any code being generated and is interesting to optimize out. If
/// the cast can be eliminated by some other simple transformation, we prefer
/// to do the simplification first.
- bool ShouldOptimizeCast(Instruction::CastOps opcode,const Value *V,
+ bool ShouldOptimizeCast(Instruction::CastOps opcode, const Value *V,
Type *Ty);
Instruction *visitCallSite(CallSite CS);
@@ -251,10 +255,10 @@ public:
// in the program. Add the new instruction to the worklist.
//
Instruction *InsertNewInstBefore(Instruction *New, Instruction &Old) {
- assert(New && New->getParent() == 0 &&
+ assert(New && !New->getParent() &&
"New instruction already inserted into a basic block!");
BasicBlock *BB = Old.getParent();
- BB->getInstList().insert(&Old, New); // Insert inst
+ BB->getInstList().insert(&Old, New); // Insert inst
Worklist.Add(New);
return New;
}
@@ -274,7 +278,7 @@ public:
// modified.
//
Instruction *ReplaceInstUsesWith(Instruction &I, Value *V) {
- Worklist.AddUsersToWorkList(I); // Add all modified instrs to worklist.
+ Worklist.AddUsersToWorkList(I); // Add all modified instrs to worklist.
// If we are replacing the instruction with itself, this must be in a
// segment of unreachable code, so just clobber the instruction.
@@ -306,12 +310,12 @@ public:
Worklist.Remove(&I);
I.eraseFromParent();
MadeIRChange = true;
- return 0; // Don't do anything with FI
+ return nullptr; // Don't do anything with FI
}
- void ComputeMaskedBits(Value *V, APInt &KnownZero,
- APInt &KnownOne, unsigned Depth = 0) const {
- return llvm::ComputeMaskedBits(V, KnownZero, KnownOne, DL, Depth);
+ void computeKnownBits(Value *V, APInt &KnownZero, APInt &KnownOne,
+ unsigned Depth = 0) const {
+ return llvm::computeKnownBits(V, KnownZero, KnownOne, DL, Depth);
}
bool MaskedValueIsZero(Value *V, const APInt &Mask,
@@ -323,7 +327,6 @@ public:
}
private:
-
/// SimplifyAssociativeOrCommutative - This performs a few simplifications for
/// operators which are associative or commutative.
bool SimplifyAssociativeOrCommutative(BinaryOperator &I);
@@ -337,12 +340,10 @@ private:
/// SimplifyDemandedUseBits - Attempts to replace V with a simpler value
/// based on the demanded bits.
- Value *SimplifyDemandedUseBits(Value *V, APInt DemandedMask,
- APInt& KnownZero, APInt& KnownOne,
- unsigned Depth);
- bool SimplifyDemandedBits(Use &U, APInt DemandedMask,
- APInt& KnownZero, APInt& KnownOne,
- unsigned Depth=0);
+ Value *SimplifyDemandedUseBits(Value *V, APInt DemandedMask, APInt &KnownZero,
+ APInt &KnownOne, unsigned Depth);
+ bool SimplifyDemandedBits(Use &U, APInt DemandedMask, APInt &KnownZero,
+ APInt &KnownOne, unsigned Depth = 0);
/// Helper routine of SimplifyDemandedUseBits. It tries to simplify demanded
/// bit for "r1 = shr x, c1; r2 = shl r1, c2" instruction sequence.
Value *SimplifyShrShlDemandedBits(Instruction *Lsr, Instruction *Sftl,
@@ -355,7 +356,9 @@ private:
bool SimplifyDemandedInstructionBits(Instruction &Inst);
Value *SimplifyDemandedVectorElts(Value *V, APInt DemandedElts,
- APInt& UndefElts, unsigned Depth = 0);
+ APInt &UndefElts, unsigned Depth = 0);
+
+ Value *SimplifyVectorOp(BinaryOperator &Inst);
// FoldOpIntoPhi - Given a binary operator, cast instruction, or select
// which has a PHI node as operand #0, see if we can fold the instruction
@@ -372,21 +375,19 @@ private:
Instruction *FoldPHIArgGEPIntoPHI(PHINode &PN);
Instruction *FoldPHIArgLoadIntoPHI(PHINode &PN);
-
Instruction *OptAndOp(Instruction *Op, ConstantInt *OpRHS,
ConstantInt *AndRHS, BinaryOperator &TheAnd);
Value *FoldLogicalPlusAnd(Value *LHS, Value *RHS, ConstantInt *Mask,
bool isSub, Instruction &I);
- Value *InsertRangeTest(Value *V, Constant *Lo, Constant *Hi,
- bool isSigned, bool Inside);
+ Value *InsertRangeTest(Value *V, Constant *Lo, Constant *Hi, bool isSigned,
+ bool Inside);
Instruction *PromoteCastOfAllocation(BitCastInst &CI, AllocaInst &AI);
Instruction *MatchBSwap(BinaryOperator &I);
bool SimplifyStoreAtEndOfBlock(StoreInst &SI);
Instruction *SimplifyMemTransfer(MemIntrinsic *MI);
Instruction *SimplifyMemSet(MemSetInst *MI);
-
Value *EvaluateInDifferentType(Value *V, Type *Ty, bool isSigned);
/// Descale - Return a value X such that Val = X * Scale, or null if none. If
@@ -394,8 +395,8 @@ private:
Value *Descale(Value *Val, APInt Scale, bool &NoSignedWrap);
};
-
-
} // end namespace llvm.
+#undef DEBUG_TYPE
+
#endif
generated by cgit v1.1 at 2024-05-18 02:37:20 +0000