[llvm] [MachineVerifier] Improve G_EXTRACT_SUBVECTOR checking (PR #109202)

[Michael Maitland via llvm-commits]

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@@ -19,35 +20,35 @@ body:             |
     ; CHECK: Destination type must be a vector
     %5:_(s32) = G_EXTRACT_SUBVECTOR %2, 0
 
-    ; CHECK: First source must be a vector
+    ; CHECK: Source must be a vector
     %6:_(<vscale x 2 x s32>) = G_EXTRACT_SUBVECTOR %0, 0
 
     %7:_(<vscale x 1 x s16>) = G_IMPLICIT_DEF
 
     ; CHECK: Element type of vectors must be the same
     %8:_(<vscale x 2 x s32>) = G_EXTRACT_SUBVECTOR %7, 0
 
-    ; CHECK: Index must be a multiple of the destination vector's minimum vector length
+    ; CHECK: Destination vector must be smaller than source vector
     %9:_(<vscale x 4 x s32>) = G_EXTRACT_SUBVECTOR  %1, 3
 
-    ; CHECK: Index must be a multiple of the destination vector's minimum vector length
+    ; CHECK: Destination vector must be smaller than source vector
     %10:_(<vscale x 4 x s32>) = G_EXTRACT_SUBVECTOR  %1, 2
 
-    ; CHECK: Source type and index must not cause extract to overrun to the destination type
+    ; CHECK: Destination type and index must not cause extract to overrun the source vector
     %11:_(<vscale x 1 x s32>) = G_EXTRACT_SUBVECTOR  %1, 4
 
     %12:_(<vscale x 4 x s32>) = G_IMPLICIT_DEF
 
-    ; CHECK: Source type and index must not cause extract to overrun to the destination type
+    ; CHECK: Destination type and index must not cause extract to overrun the source vector
     %13:_(<vscale x 3 x s32>) = G_EXTRACT_SUBVECTOR  %12, 3
 
     %14:_(<2 x s32>) = G_IMPLICIT_DEF
     %15:_(<4 x s32>) = G_IMPLICIT_DEF
 
-    ; CHECK: Source type and index must not cause extract to overrun to the destination type
+    ; CHECK: Destination type and index must not cause extract to overrun the source vector
     %16:_(<2 x s32>) = G_EXTRACT_SUBVECTOR  %14, 4
 
-    ; CHECK: Source type and index must not cause extract to overrun to the destination type
+    ; CHECK: Destination type and index must not cause extract to overrun the source vector
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michaelmaitland wrote:

I see

https://github.com/llvm/llvm-project/pull/109202