[PATCH] D25697: Make the LTO comdat api more symbol table friendly

[Rafael Ávila de Espíndola via llvm-commits]

rafael created this revision.
rafael added reviewers: mehdi_amini, pcc, davide.
rafael added a subscriber: llvm-commits.

In an IR symbol table I would expect the comdats to be represented as:

- A table of strings, one for each comdat name.
- Each symbol has an optional index into that table.

The natural api for accessing that would be

InputFile:
ArrayRef<StringRef> getComdats() const;

Symbol:
int getComdat() const;

This patch implements an API as close to that as possible.  The implementation on top of the current IRObjectFile is a bit hackish, but should map just fine over a symbol table and is very convenient to use (I will upload the lld patch).


https://reviews.llvm.org/D25697

Files:
  include/llvm/LTO/LTO.h
  lib/LTO/LTO.cpp
  tools/gold/gold-plugin.cpp

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