6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-11-02 07:17:36 +00:00
Code Issues Projects Releases Wiki Activity

IVUsers no longer needs to record the phis.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133518 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Trick
2011-06-21 15:43:52 +00:00
parent e275c1c9b5
commit 4417e537b6
4 changed files with 19 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
lib/Transforms/Scalar/IndVarSimplify.cpp
View File

@@ -131,8 +131,7 @@ namespace {
void EliminateIVComparison(ICmpInst *ICmp, Value *IVOperand);
void EliminateIVRemainder(BinaryOperator *Rem,
Value *IVOperand,
bool IsSigned,
PHINode *IVPhi);
bool IsSigned);
void pushIVUsers(Instruction *Def);
bool isSimpleIVUser(Instruction *I, const Loop *L);
void RewriteNonIntegerIVs(Loop *L);
@@ -523,7 +522,7 @@ void IndVarSimplify::SimplifyIVUsers(SCEVExpander &Rewriter) {
if (BinaryOperator *Rem = dyn_cast<BinaryOperator>(UseInst)) {
bool IsSigned = Rem->getOpcode() == Instruction::SRem;
if (IsSigned || Rem->getOpcode() == Instruction::URem) {
EliminateIVRemainder(Rem, IVOperand, IsSigned, I->getPhi());
EliminateIVRemainder(Rem, IVOperand, IsSigned);
continue;
}
}
@@ -946,8 +945,7 @@ void IndVarSimplify::EliminateIVComparison(ICmpInst *ICmp, Value *IVOperand) {
void IndVarSimplify::EliminateIVRemainder(BinaryOperator *Rem,
Value *IVOperand,
bool IsSigned,
PHINode *IVPhi) {
bool IsSigned) {
// We're only interested in the case where we know something about
// the numerator.
if (IVOperand != Rem->getOperand(0))
@@ -992,7 +990,7 @@ void IndVarSimplify::EliminateIVRemainder(BinaryOperator *Rem,
// Inform IVUsers about the new users.
if (IU) {
if (Instruction *I = dyn_cast<Instruction>(Rem->getOperand(0)))
IU->AddUsersIfInteresting(I, IVPhi);
IU->AddUsersIfInteresting(I);
}
DEBUG(dbgs() << "INDVARS: Simplified rem: " << *Rem << '\n');
++NumElimRem;
@@ -1011,7 +1009,7 @@ bool IndVarSimplify::EliminateIVUser(Instruction *UseInst,
if (BinaryOperator *Rem = dyn_cast<BinaryOperator>(UseInst)) {
bool IsSigned = Rem->getOpcode() == Instruction::SRem;
if (IsSigned || Rem->getOpcode() == Instruction::URem) {
EliminateIVRemainder(Rem, IVOperand, IsSigned, CurrIV);
EliminateIVRemainder(Rem, IVOperand, IsSigned);
return true;
}
}
@@ -1283,8 +1281,7 @@ bool IndVarSimplify::runOnLoop(Loop *L, LPPassManager &LPM) {
// For completeness, inform IVUsers of the IV use in the newly-created
// loop exit test instruction.
if (NewICmp && IU)
IU->AddUsersIfInteresting(cast<Instruction>(NewICmp->getOperand(0)),
IndVar);
IU->AddUsersIfInteresting(cast<Instruction>(NewICmp->getOperand(0)));
// Clean up dead instructions.
Changed |= DeleteDeadPHIs(L->getHeader());
@@ -1716,5 +1713,5 @@ void IndVarSimplify::HandleFloatingPointIV(Loop *L, PHINode *PN) {
// Add a new IVUsers entry for the newly-created integer PHI.
if (IU)
IU->AddUsersIfInteresting(NewPHI, NewPHI);
IU->AddUsersIfInteresting(NewPHI);
}

3
lib/Transforms/Scalar/LoopStrengthReduce.cpp
View File

@@ -1804,8 +1804,7 @@ LSRInstance::OptimizeLoopTermCond() {
ExitingBlock->getInstList().insert(TermBr, Cond);
// Clone the IVUse, as the old use still exists!
CondUse = &IU.AddUser(Cond, CondUse->getOperandValToReplace(),
CondUse->getPhi());
CondUse = &IU.AddUser(Cond, CondUse->getOperandValToReplace());
TermBr->replaceUsesOfWith(OldCond, Cond);
}
}