[llvm] [X86] Select ANDN for i8 operands (PR #205050)

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Thu Jul 9 08:26:58 PDT 2026


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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Target/X86/X86ISelLowering.cpp --diff_from_common_commit
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diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 752c74ffd..7fd5d1195 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -51717,8 +51717,8 @@ static SDValue combineI8AndNotIntoI32AndNot(SDNode *N, const SDLoc &DL,
 
   SDValue ExtX = DAG.getNode(ISD::ANY_EXTEND, DL, MVT::i32, X);
   SDValue ExtY = DAG.getNode(ISD::ANY_EXTEND, DL, MVT::i32, Y);
-  SDValue And = DAG.getNode(ISD::AND, DL, MVT::i32,
-                            DAG.getNOT(DL, ExtX, MVT::i32), ExtY);
+  SDValue And =
+      DAG.getNode(ISD::AND, DL, MVT::i32, DAG.getNOT(DL, ExtX, MVT::i32), ExtY);
   return DAG.getNode(ISD::TRUNCATE, DL, MVT::i8, And);
 }
 

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https://github.com/llvm/llvm-project/pull/205050


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