[llvm] [GlobalISel] Make scalar G_SHUFFLE_VECTOR illegal. (PR #140508)

[Matt Arsenault via llvm-commits]

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@@ -122,54 +122,3 @@ body:             |
     RET_ReallyLR implicit $d0
 
 ...
-
-# CHECK-LABEL: name: test_shuffle_0
-# CHECK: G_SHUFFLE_VECTOR %0(<2 x s32>), %1, shufflemask(0)
----
-name: test_shuffle_0
-tracksRegLiveness: true
-body:             |
-  bb.0:
-    liveins: $d0
-
-    %0:_(<2 x s32>) = COPY $d0
-    %2:_(<2 x s32>) = G_IMPLICIT_DEF
-    %1:_(s32) = G_SHUFFLE_VECTOR %0(<2 x s32>), %2, shufflemask(0)
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arsenm wrote:

These cases should still be tested for emitting an error 

https://github.com/llvm/llvm-project/pull/140508