[llvm] [X86][SSE] Improve ISD::FP_TO_*INT_SAT vector lowering (PR #199416)

Phoebe Wang via llvm-commits llvm-commits at lists.llvm.org
Sun Aug 23 17:23:26 PDT 2026


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@@ -1545,6 +1550,10 @@ X86TargetLowering::X86TargetLowering(const X86TargetMachine &TM,
     setOperationPromotedToType(ISD::STRICT_FP_TO_UINT, MVT::v8i16, MVT::v8i32);
     setOperationAction(ISD::FP_TO_SINT,                MVT::v8i32, Custom);
     setOperationAction(ISD::FP_TO_UINT,                MVT::v8i32, Custom);
+    if (!Subtarget.hasAVX10_2()) {
+      setOperationAction(ISD::FP_TO_SINT_SAT, MVT::v8i32, Custom);
+      setOperationAction(ISD::FP_TO_UINT_SAT, MVT::v8i32, Custom);
+    }
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phoebewang wrote:

Ditto, move these to hasAVX block.

https://github.com/llvm/llvm-project/pull/199416


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