[all-commits] [llvm/llvm-project] e4888b: [WebAssembly] Avoid unused function imports in PIC...

[Sam Clegg via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e4888be74e342840cc1d9e42c9f42938169ae96b
      https://github.com/llvm/llvm-project/commit/e4888be74e342840cc1d9e42c9f42938169ae96b
  Author: Sam Clegg <sbc at chromium.org>
  Date:   2021-08-18 (Wed, 18 Aug 2021)

  Changed paths:
    M lld/test/wasm/shared.s
    M lld/test/wasm/shared64.s
    M lld/wasm/SymbolTable.cpp
    M lld/wasm/Writer.cpp

  Log Message:
  -----------
  [WebAssembly] Avoid unused function imports in PIC mode

In PIC mode we import function address via `GOT.mem` imports but for
direct function calls we still import the first class function.
However, if the function is never directly called we can avoid the first
class import completely.

Differential Revision: https://reviews.llvm.org/D108345