[DAG] TargetLowering::SimplifySetCC - use APInt::getMinSignedBits() helper. NFC.

RKSimon · RKSimon · commit 882c083889e6 · 2022-01-04T13:48:36.000Z
diff --git a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -3678,9 +3678,7 @@ SDValue TargetLowering::SimplifySetCC(EVT VT, SDValue N0, SDValue N1,
       }
 
       // Figure out how many bits we need to preserve this constant.
-      unsigned ReqdBits = Signed ?
-        C1.getBitWidth() - C1.getNumSignBits() + 1 :
-        C1.getActiveBits();
+      unsigned ReqdBits = Signed ? C1.getMinSignedBits() : C1.getActiveBits();
 
       // Make sure we're not losing bits from the constant.
       if (MinBits > 0 &&

Original file line number	Diff line number	Diff line change
`@@ -3678,9 +3678,7 @@ SDValue TargetLowering::SimplifySetCC(EVT VT, SDValue N0, SDValue N1,`
`3678`	`3678`	`}`
`3679`	`3679`
`3680`	`3680`	`// Figure out how many bits we need to preserve this constant.`
`3681`		`- unsigned ReqdBits = Signed ?`
`3682`		`- C1.getBitWidth() - C1.getNumSignBits() + 1 :`
`3683`		`- C1.getActiveBits();`
	`3681`	`+ unsigned ReqdBits = Signed ? C1.getMinSignedBits() : C1.getActiveBits();`
`3684`	`3682`
`3685`	`3683`	`// Make sure we're not losing bits from the constant.`
`3686`	`3684`	`if (MinBits > 0 &&`