[PATCH] D23925: [ELF] Default to entry address 0x0 in case start symbol is not defined and entry point is not specified in command line

[Eugene Leviant via llvm-commits]

evgeny777 removed rL LLVM as the repository for this revision.
evgeny777 updated this revision to Diff 70402.
evgeny777 added a comment.

Diff updated. Here I'm not adding entry symbol to symtab unless explicitly told. Two extra things done:

- If entry symbol is being inserted then IsUsedInRegularObj is always set to true to avoid incorrect LTO optimizations
- Extra checks are needed in addLazyArchive and addLazyObject to always create object file if it contains start symbol

The position of _start symbol in symbol table is arbitrary now, that's why some test cases were modified.


https://reviews.llvm.org/D23925

Files:
  ELF/Driver.cpp
  ELF/SymbolTable.cpp
  test/ELF/arm-gnu-ifunc.s
  test/ELF/edata-etext.s
  test/ELF/entry.s
  test/ELF/linkerscript/symbols-synthetic.s
  test/ELF/reproduce-windows.s
  test/ELF/resolution.s
  test/ELF/undef-start.s

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