[lld] [llvm] [WebAssembly] Require tags for Wasm EH and Wasm SJLJ to be defined externally (PR #159143)

[Sam Clegg via llvm-commits]

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@@ -49,7 +51,7 @@ define void @_start() {
 ; NOPIC-EXPORT-ALL:         Kind:            TAG
 ; NOPIC-EXPORT-ALL:         Index:           0
 
-; In PIC mode, tags are undefined and imported from JS.
+; In IMPORT mode, we leave the tags as undefined and they should be imported
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sbc100 wrote:

Oops, I has planning to rename PIC here, but I'll leave it as is. 

https://github.com/llvm/llvm-project/pull/159143