Commits on Jun 5, 2024

1. Add basic support for DWARF processing with components …

   This commit updates the native-DWARF processing (the `-D debug-info` CLI
   flag) to support components. Previously component support was not
   implemented and if there was more than one core wasm module within a
   component then dwarf would be ignored entirely.
   
   This commit contains a number of refactorings to plumb a more full
   compilation context throughout the dwarf processing pipeline. Previously
   the data structures used only were able to support a single module. A
   new `Compilation` structure is used to represent the results of an
   entire compilation and is plumbed through the various locations. Most of
   the refactorings in this commit were then to extend loops to loop over
   more things and handle the case where there is more than one core wasm
   module.
   
   I'll admit I'm not expert on DWARF but basic examples appear to work
   locally and most of the additions here seemed relatively straightforward
   in terms of "add another loop to iterate over more things" but I'm not
   100% sure how well this will work. In theory this now supports
   concatenating DWARF sections across multiple core wasm modules, but
   that's not super well tested.

   

   alexcrichton committed Jun 5, 2024
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