[llvm] [X86] Fix miscompile of fptosi.sat.iN.f16 for NaN under avx512fp16 (PR #210556)

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Mon Jul 20 00:20:07 PDT 2026


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git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Target/X86/X86ISelLowering.cpp --diff_from_common_commit
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``````````diff
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 767452ff4..1bfec9f31 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -22686,9 +22686,8 @@ X86TargetLowering::LowerFP_TO_INT_SAT(SDValue Op, SelectionDAG &DAG) const {
     // simply doesn't match, leaving the already-correct truncated zero in
     // place.
     ISD::CondCode MinCC = (IsSigned && DstVT != TmpVT) ? ISD::CondCode::SETOLT
-                                                        : ISD::CondCode::SETULT;
-    Select = DAG.getSelectCC(
-      dl, Src, MinFloatNode, MinIntNode, Select, MinCC);
+                                                       : ISD::CondCode::SETULT;
+    Select = DAG.getSelectCC(dl, Src, MinFloatNode, MinIntNode, Select, MinCC);
   }
 
   // If Src OGT MaxFloat, select MaxInt.

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https://github.com/llvm/llvm-project/pull/210556


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