[AArch64] Use isAllOnes rather than popcount() == Size (NFC)

[AZero13]

No description provided.

[llvmbot]

@llvm/pr-subscribers-backend-aarch64

Author: AZero13 (AZero13)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/167884.diff

1 Files Affected:

• (modified) llvm/lib/Target/AArch64/AArch64ISelLowering.cpp (+1-1)

diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
index 7b51f453b4974..5b24ee302de5c 100644
--- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -2556,7 +2556,7 @@ bool AArch64TargetLowering::targetShrinkDemandedConstant(
     return false;
 
   // Exit early if we demand all bits.
-  if (DemandedBits.popcount() == Size)
+  if (DemandedBits.isAllOnes())
     return false;
 
   unsigned NewOpc;

[AZero13]

@MacDue please merge