[llvm] 130cc66 - [NFC][SCEV] Refactor getAbsExpr() out of createSCEV()
Roman Lebedev via llvm-commits
llvm-commits at lists.llvm.org
Sat Oct 17 11:23:16 PDT 2020
Author: Roman Lebedev
Date: 2020-10-17T21:21:02+03:00
New Revision: 130cc662b5d313db69b136d880ebe44e58b25418
URL: https://github.com/llvm/llvm-project/commit/130cc662b5d313db69b136d880ebe44e58b25418
DIFF: https://github.com/llvm/llvm-project/commit/130cc662b5d313db69b136d880ebe44e58b25418.diff
LOG: [NFC][SCEV] Refactor getAbsExpr() out of createSCEV()
Added:
Modified:
llvm/include/llvm/Analysis/ScalarEvolution.h
llvm/lib/Analysis/ScalarEvolution.cpp
Removed:
################################################################################
diff --git a/llvm/include/llvm/Analysis/ScalarEvolution.h b/llvm/include/llvm/Analysis/ScalarEvolution.h
index 34849ebeb4f5..65d092a59347 100644
--- a/llvm/include/llvm/Analysis/ScalarEvolution.h
+++ b/llvm/include/llvm/Analysis/ScalarEvolution.h
@@ -572,6 +572,7 @@ class ScalarEvolution {
/// \p IndexExprs The expressions for the indices.
const SCEV *getGEPExpr(GEPOperator *GEP,
const SmallVectorImpl<const SCEV *> &IndexExprs);
+ const SCEV *getAbsExpr(const SCEV *Op, bool IsNSW);
const SCEV *getMinMaxExpr(unsigned Kind,
SmallVectorImpl<const SCEV *> &Operands);
const SCEV *getSMaxExpr(const SCEV *LHS, const SCEV *RHS);
diff --git a/llvm/lib/Analysis/ScalarEvolution.cpp b/llvm/lib/Analysis/ScalarEvolution.cpp
index 697d254f02c4..f3e152b00967 100644
--- a/llvm/lib/Analysis/ScalarEvolution.cpp
+++ b/llvm/lib/Analysis/ScalarEvolution.cpp
@@ -3334,6 +3334,11 @@ ScalarEvolution::findExistingSCEVInCache(int SCEVType,
UniqueSCEVs.FindNodeOrInsertPos(ID, IP), std::move(ID), IP);
}
+const SCEV *ScalarEvolution::getAbsExpr(const SCEV *Op, bool IsNSW) {
+ SCEV::NoWrapFlags Flags = IsNSW ? SCEV::FlagNSW : SCEV::FlagAnyWrap;
+ return getSMaxExpr(Op, getNegativeSCEV(Op, Flags));
+}
+
const SCEV *ScalarEvolution::getMinMaxExpr(unsigned Kind,
SmallVectorImpl<const SCEV *> &Ops) {
assert(!Ops.empty() && "Cannot get empty (u|s)(min|max)!");
@@ -6340,14 +6345,10 @@ const SCEV *ScalarEvolution::createSCEV(Value *V) {
if (auto *II = dyn_cast<IntrinsicInst>(U)) {
switch (II->getIntrinsicID()) {
- case Intrinsic::abs: {
- const SCEV *Op = getSCEV(II->getArgOperand(0));
- SCEV::NoWrapFlags Flags =
- cast<ConstantInt>(II->getArgOperand(1))->isOne()
- ? SCEV::FlagNSW
- : SCEV::FlagAnyWrap;
- return getSMaxExpr(Op, getNegativeSCEV(Op, Flags));
- }
+ case Intrinsic::abs:
+ return getAbsExpr(
+ getSCEV(II->getArgOperand(0)),
+ /*IsNSW=*/cast<ConstantInt>(II->getArgOperand(1))->isOne());
case Intrinsic::umax:
return getUMaxExpr(getSCEV(II->getArgOperand(0)),
getSCEV(II->getArgOperand(1)));
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