Add DemandedElts

wzssyqa · wzssyqa · commit 6f83b720e65b · 2025-04-21T20:21:44.000+08:00
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -5767,7 +5767,7 @@ bool SelectionDAG::isKnownNeverNaN(SDValue Op, const APInt &DemandedElts,
       return true;
     if (SNaN && (NoFPClass & fcSNan) == fcSNan)
       return true;
-    return isKnownNeverNaN(Op.getOperand(0), SNaN, Depth + 1);
+    return isKnownNeverNaN(Op.getOperand(0), DemandedElts, SNaN, Depth + 1);
   }
   default:
     if (Opcode >= ISD::BUILTIN_OP_END || Opcode == ISD::INTRINSIC_WO_CHAIN ||

Original file line number	Diff line number	Diff line change
`@@ -5767,7 +5767,7 @@ bool SelectionDAG::isKnownNeverNaN(SDValue Op, const APInt &DemandedElts,`
`5767`	`5767`	`return true;`
`5768`	`5768`	`if (SNaN && (NoFPClass & fcSNan) == fcSNan)`
`5769`	`5769`	`return true;`
`5770`		`- return isKnownNeverNaN(Op.getOperand(0), SNaN, Depth + 1);`
	`5770`	`+ return isKnownNeverNaN(Op.getOperand(0), DemandedElts, SNaN, Depth + 1);`
`5771`	`5771`	`}`
`5772`	`5772`	`default:`
`5773`	`5773`	`if (Opcode >= ISD::BUILTIN_OP_END \|\| Opcode == ISD::INTRINSIC_WO_CHAIN \|\|`