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[CodeGenPrepare] Return false in AddressingModeMatcher::matchOperationAddr if zext has nneg flag #72098

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[CodeGenPrepare] Return false in AddressingModeMatcher::matchOperationAddr if zext has nneg flag #72098

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4 changes: 4 additions & 0 deletions llvm/lib/CodeGen/CodeGenPrepare.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -4886,6 +4886,10 @@ bool AddressingModeMatcher::matchOperationAddr(User *AddrInst, unsigned Opcode,
if (!Ext)
return false;

// TODO: add comments.
if (Ext->hasNonNeg())
return false;

// Try to move this ext out of the way of the addressing mode.
// Ask for a method for doing so.
TypePromotionHelper::Action TPH =
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