remove unnecessary bitcast in constant eval

Prince781 · Prince781 · commit e3dc2266ba4c · 2025-02-07T21:05:54.000-08:00
diff --git a/llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp b/llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp
@@ -2162,8 +2162,7 @@ SDValue NVPTXTargetLowering::LowerBITCAST(SDValue Op, SelectionDAG &DAG) const {
         // cast two constants
         APInt Value(64, 0);
         Value = CastToAPInt(BVOp0) | CastToAPInt(BVOp1).shl(32);
-        SDValue Const = DAG.getConstant(Value, DL, MVT::i64);
-        return DAG.getBitcast(ToVT, Const);
+        return DAG.getConstant(Value, DL, MVT::i64);
       }
 
       // otherwise build an i64

Original file line number	Diff line number	Diff line change
`@@ -2162,8 +2162,7 @@ SDValue NVPTXTargetLowering::LowerBITCAST(SDValue Op, SelectionDAG &DAG) const {`
`2162`	`2162`	`// cast two constants`
`2163`	`2163`	`APInt Value(64, 0);`
`2164`	`2164`	`Value = CastToAPInt(BVOp0) \| CastToAPInt(BVOp1).shl(32);`
`2165`		`- SDValue Const = DAG.getConstant(Value, DL, MVT::i64);`
`2166`		`- return DAG.getBitcast(ToVT, Const);`
	`2165`	`+ return DAG.getConstant(Value, DL, MVT::i64);`
`2167`	`2166`	`}`
`2168`	`2167`
`2169`	`2168`	`// otherwise build an i64`