[wasm] Parse function names on demand
Function names are optional in wasm and might not be present for most functions. Instead of storing an empty name with each function, this change loads names, if present, on first access of the name. This also fixes an inconsistency with streaming compilation. Under streaming compilation, functions are compiled before parsing the name section. Hence, they always received an empty name. With this change, assignment of names is typically deferred until the whole module was parsed. Bug: chromium:820291 Change-Id: I86d76aa40b7c45897d152725547795c8b6b9b9ba Reviewed-on: https://chromium-review.googlesource.com/955647 Commit-Queue: Stephan Herhut <herhut@chromium.org> Reviewed-by: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#51909}
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