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Finally get this patch right :)
Replace expensive getZExtValue() == 0 calls with isZero() calls. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34861 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -540,7 +540,7 @@ Value *BasedUser::InsertCodeForBaseAtPosition(const SCEVHandle &NewBase,
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// If there is no immediate value, skip the next part.
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if (SCEVConstant *SC = dyn_cast<SCEVConstant>(Imm))
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if (SC->getValue()->isNullValue())
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if (SC->getValue()->isZero())
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return Rewriter.expandCodeFor(NewBase, BaseInsertPt,
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OperandValToReplace->getType());
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@ -779,7 +779,7 @@ static void SeparateSubExprs(std::vector<SCEVHandle> &SubExprs,
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SeparateSubExprs(SubExprs, SARE->getOperand(0));
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}
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} else if (!isa<SCEVConstant>(Expr) ||
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!cast<SCEVConstant>(Expr)->getValue()->isNullValue()) {
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!cast<SCEVConstant>(Expr)->getValue()->isZero()) {
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// Do not add zero.
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SubExprs.push_back(Expr);
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}
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@ -869,7 +869,7 @@ RemoveCommonExpressionsFromUseBases(std::vector<BasedUser> &Uses) {
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///
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static bool isZero(SCEVHandle &V) {
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if (SCEVConstant *SC = dyn_cast<SCEVConstant>(V))
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return SC->getValue()->getZExtValue() == 0;
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return SC->getValue()->isZero();
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return false;
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}
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@ -1148,14 +1148,14 @@ void LoopStrengthReduce::StrengthReduceStridedIVUsers(const SCEVHandle &Stride,
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// are reusing an IV, it has not been used to initialize the PHI node.
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// Add it to the expression used to rewrite the uses.
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if (!isa<ConstantInt>(CommonBaseV) ||
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!cast<ConstantInt>(CommonBaseV)->isNullValue())
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!cast<ConstantInt>(CommonBaseV)->isZero())
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RewriteExpr = SCEVAddExpr::get(RewriteExpr,
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SCEVUnknown::get(CommonBaseV));
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}
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// Now that we know what we need to do, insert code before User for the
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// immediate and any loop-variant expressions.
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if (!isa<ConstantInt>(BaseV) || !cast<ConstantInt>(BaseV)->isNullValue())
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if (!isa<ConstantInt>(BaseV) || !cast<ConstantInt>(BaseV)->isZero())
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// Add BaseV to the PHI value if needed.
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RewriteExpr = SCEVAddExpr::get(RewriteExpr, SCEVUnknown::get(BaseV));
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