[llvm] [GlobalISel] Add G_ABDS and G_ABDU instructions (PR #118122)

[Matt Arsenault via llvm-commits]

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@@ -6,6 +6,14 @@ name:            g_abd_su
 body: |
   bb.0:
 
+    %2:_(p0) = G_IMPLICIT_DEF
+    %3:_(p0) = G_IMPLICIT_DEF
+    %4:_(s1) = G_ABDS %2, %3
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arsenm wrote:

But that does not remove the need to check that the correct error is produced. I also see the case with a pointer type in each operand is not rejected

https://github.com/llvm/llvm-project/pull/118122