[llvm] [X86] Fix 32-bit immediate assertion and convert into backend error (PR #123872)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,40 @@
+; RUN: not llc < %s -mtriple=i686 2>&1 | FileCheck %s -check-prefix=i686
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arsenm wrote:

```suggestion
; RUN: not llc -mtriple=i686 -filetype=null %s 2>&1 | FileCheck %s -check-prefix=ERR-I686
```

https://github.com/llvm/llvm-project/pull/123872