Use freeze N1

Yui5427 · Yui5427 · commit d6359dba4767 · 2025-08-29T20:48:32.000+08:00
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -10122,8 +10122,9 @@ SDValue DAGCombiner::visitXOR(SDNode *N) {
         CC = ISD::SETUGT;
         break;
       }
-      SDValue Cmp = DAG.getSetCC(DL, CCVT, Op0, N1, CC);
-      SDValue XorXC = DAG.getNode(ISD::XOR, DL, VT, Op0, N1);
+      SDValue FN1 = DAG.getFreeze(N1);
+      SDValue Cmp = DAG.getSetCC(DL, CCVT, Op0, FN1, CC);
+      SDValue XorXC = DAG.getNode(ISD::XOR, DL, VT, Op0, FN1);
       SDValue Zero = DAG.getConstant(0, DL, VT);
       return DAG.getSelect(DL, VT, Cmp, XorXC, Zero);
     }

Original file line number	Diff line number	Diff line change
`@@ -10122,8 +10122,9 @@ SDValue DAGCombiner::visitXOR(SDNode *N) {`
`10122`	`10122`	`CC = ISD::SETUGT;`
`10123`	`10123`	`break;`
`10124`	`10124`	`}`
`10125`		`- SDValue Cmp = DAG.getSetCC(DL, CCVT, Op0, N1, CC);`
`10126`		`- SDValue XorXC = DAG.getNode(ISD::XOR, DL, VT, Op0, N1);`
	`10125`	`+ SDValue FN1 = DAG.getFreeze(N1);`
	`10126`	`+ SDValue Cmp = DAG.getSetCC(DL, CCVT, Op0, FN1, CC);`
	`10127`	`+ SDValue XorXC = DAG.getNode(ISD::XOR, DL, VT, Op0, FN1);`
`10127`	`10128`	`SDValue Zero = DAG.getConstant(0, DL, VT);`
`10128`	`10129`	`return DAG.getSelect(DL, VT, Cmp, XorXC, Zero);`
`10129`	`10130`	`}`