[APInt] Call countTrailingZerosSlowCase() directly from isShiftedMask. NFC

topperc · topperc · commit 3c31ee740669 · 2024-11-17T23:11:16.000-08:00
We checked the single word case already and we already call
countLeadingZerosSlowCase and countPopulationSlowCase.
diff --git a/llvm/include/llvm/ADT/APInt.h b/llvm/include/llvm/ADT/APInt.h
@@ -512,7 +512,7 @@ class [[nodiscard]] APInt {
       return isShiftedMask_64(U.VAL);
     unsigned Ones = countPopulationSlowCase();
     unsigned LeadZ = countLeadingZerosSlowCase();
-    return (Ones + LeadZ + countr_zero()) == BitWidth;
+    return (Ones + LeadZ + countTrailingZerosSlowCase()) == BitWidth;
   }
 
   /// Return true if this APInt value contains a non-empty sequence of ones with

Original file line number	Diff line number	Diff line change
`@@ -512,7 +512,7 @@ class [[nodiscard]] APInt {`
`512`	`512`	`return isShiftedMask_64(U.VAL);`
`513`	`513`	`unsigned Ones = countPopulationSlowCase();`
`514`	`514`	`unsigned LeadZ = countLeadingZerosSlowCase();`
`515`		`- return (Ones + LeadZ + countr_zero()) == BitWidth;`
	`515`	`+ return (Ones + LeadZ + countTrailingZerosSlowCase()) == BitWidth;`
`516`	`516`	`}`
`517`	`517`
`518`	`518`	`/// Return true if this APInt value contains a non-empty sequence of ones with`