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Constify a bunch of SCEV-using code.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70919 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2009-05-04 22:02:23 +00:00
parent 7d04e4a7c0
commit 622ed671b9
2 changed files with 65 additions and 63 deletions
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8
lib/Transforms/Scalar/LoopStrengthReduce.cpp
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@@ -321,7 +321,7 @@ static bool getSCEVStartAndStride(const SCEVHandle &SH, Loop *L,
// for a nested AddRecExpr.
if (const SCEVAddExpr *AE = dyn_cast<SCEVAddExpr>(SH)) {
for (unsigned i = 0, e = AE->getNumOperands(); i != e; ++i)
if (SCEVAddRecExpr *AddRec =
if (const SCEVAddRecExpr *AddRec =
dyn_cast<SCEVAddRecExpr>(AE->getOperand(i))) {
if (AddRec->getLoop() == L)
TheAddRec = SE->getAddExpr(AddRec, TheAddRec);
@@ -1400,8 +1400,8 @@ bool LoopStrengthReduce::ShouldUseFullStrengthReductionMode(
// Iterate through the uses to find conditions that automatically rule out
// full-lsr mode.
for (unsigned i = 0, e = UsersToProcess.size(); i != e; ) {
SCEV *Base = UsersToProcess[i].Base;
SCEV *Imm = UsersToProcess[i].Imm;
const SCEV *Base = UsersToProcess[i].Base;
const SCEV *Imm = UsersToProcess[i].Imm;
// If any users have a loop-variant component, they can't be fully
// strength-reduced.
if (Imm && !Imm->isLoopInvariant(L))
@@ -1410,7 +1410,7 @@ bool LoopStrengthReduce::ShouldUseFullStrengthReductionMode(
// the two Imm values can't be folded into the address, full
// strength reduction would increase register pressure.
do {
SCEV *CurImm = UsersToProcess[i].Imm;
const SCEV *CurImm = UsersToProcess[i].Imm;
if ((CurImm || Imm) && CurImm != Imm) {
if (!CurImm) CurImm = SE->getIntegerSCEV(0, Stride->getType());
if (!Imm) Imm = SE->getIntegerSCEV(0, Stride->getType());