[llvm] [AArch64] merge index address with large offset into base address (PR #75343)

[David Green via llvm-commits]

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@@ -295,3 +459,27 @@ define i32 @LdOffset_i16_odd_offset(ptr nocapture noundef readonly %a)  {
   ret i32 %conv
 }
 
+; Already encoded with a signle mov MOVNWi
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davemgreen wrote:

single

https://github.com/llvm/llvm-project/pull/75343