[WebAssembly] Add a test for unsupported inline assembly

[mojingran]

Summary

Tests for proper error message when provided an invalid inline WebAssembly.

[mojingran]

Merged this patch with D154734. Closing this revision.

llvm/test/CodeGen/WebAssembly/inline-asm-failure.ll

+;RUN: not llc -O0 --mtriple=wasm32 -filetype=obj \
+;RUN:     -o /dev/null 2>&1 <%s | FileCheck %s
+source_filename = "issue111471.c"
+target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"
+target triple = "wasm32-unknown-unknown"
+
+@__main_void = hidden alias i32 (), ptr @main
+
+; Function Attrs: noinline nounwind optnone
+define hidden void @get_global() #0 {
+entry:
+  call void asm sideeffect "global.get 0", ""() #1, !srcloc !2
+  ret void
+}
+
+; Function Attrs: noinline nounwind optnone
+define hidden i32 @main() #0 {
+entry:
+  ret i32 0
+}
+
+attributes #0 = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="generic" "target-features"="+mutable-globals,+sign-ext" }
+attributes #1 = { nounwind }
+
+!llvm.module.flags = !{!0}
+!llvm.ident = !{!1}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{!"clang version 16.0.5 (https://github.com/rust-lang/llvm-project.git 22897bce7bfedc9cd3953a33419b346936263500)"}
+!2 = !{i64 32}
+;CHECK: <unknown>:0: error: Wasm globals should only be accessed symbolically!