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Temporarily revert 123133, it's causing some regressions and I'm trying
to get a testcase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123225 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1560,14 +1560,10 @@ const SCEV *ScalarEvolution::getAddExpr(SmallVectorImpl<const SCEV *> &Ops,
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AddRecOps[0] = getAddExpr(LIOps);
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// Build the new addrec. Propagate the NUW and NSW flags if both the
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// outer add and the inner addrec are guaranteed to have no overflow or if
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// there is no outer part.
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if (Ops.size() != 1) {
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HasNUW &= AddRec->hasNoUnsignedWrap();
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HasNSW &= AddRec->hasNoSignedWrap();
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}
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const SCEV *NewRec = getAddRecExpr(AddRecOps, AddRecLoop, HasNUW, HasNSW);
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// outer add and the inner addrec are guaranteed to have no overflow.
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const SCEV *NewRec = getAddRecExpr(AddRecOps, AddRecLoop,
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HasNUW && AddRec->hasNoUnsignedWrap(),
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HasNSW && AddRec->hasNoSignedWrap());
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// If all of the other operands were loop invariant, we are done.
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if (Ops.size() == 1) return NewRec;
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