[llvm] [GlobalISel] Add support to moreElementsVector for G_SEXT, G_ZEXT and G_ANYEXT (PR #85038)

[David Green via llvm-commits]

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@@ -5496,6 +5496,26 @@ LegalizerHelper::moreElementsVector(MachineInstr &MI, unsigned TypeIdx,
     return Legalized;
   }
 
+  case TargetOpcode::G_SEXT:
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davemgreen wrote:

There is a case above that handles G_TRUNC and a few others that have different type sizes. It could be extended to handle these operations too.

https://github.com/llvm/llvm-project/pull/85038