[llvm] [AArch64] Teach areMemAccessesTriviallyDisjoint about scalable widths. (PR #73655)

[David Sherwood via llvm-commits]

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@@ -2675,9 +2676,15 @@ bool AArch64InstrInfo::getMemOperandsWithOffsetWidth(
     return false;
 
   const MachineOperand *BaseOp;
+  TypeSize WidthN(0, false);
   if (!getMemOperandWithOffsetWidth(LdSt, BaseOp, Offset, OffsetIsScalable,
-                                    Width, TRI))
+                                    WidthN, TRI))
     return false;
+  // The maximum vscale is 16 undef AArch64, return the maximal extent for the
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david-arm wrote:

Should this comment be

  // The maximum vscale is 16 for AArch64

?

https://github.com/llvm/llvm-project/pull/73655