[all-commits] [llvm/llvm-project] fb6c10: [MC] Emit a jump table size section (#101962)

[Nabeel Omer via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fb6c10da1f6cb4eb9556548d51dafe97d953ba58
      https://github.com/llvm/llvm-project/commit/fb6c10da1f6cb4eb9556548d51dafe97d953ba58
  Author: Nabeel Omer <nabeel.omer at sony.com>
  Date:   2024-09-06 (Fri, 06 Sep 2024)

  Changed paths:
    M clang/lib/Driver/ToolChains/PS4CPU.cpp
    M clang/test/Driver/ps4-ps5-toolchain.c
    M llvm/docs/Extensions.rst
    M llvm/include/llvm/BinaryFormat/ELF.h
    M llvm/include/llvm/CodeGen/AsmPrinter.h
    M llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
    M llvm/lib/MC/MCParser/ELFAsmParser.cpp
    M llvm/lib/MC/MCSectionELF.cpp
    M llvm/lib/Object/ELF.cpp
    A llvm/test/CodeGen/X86/jump-table-size-section.ll

  Log Message:
  -----------
  [MC] Emit a jump table size section (#101962)

This patch will make LLVM emit a new section .llvm_jump_table_sizes 
containing tuples of (jump table address, entry count) in object files.
This section is useful for tools that need to statically reconstruct the
control flow of executables.

At the moment this is only enabled by default for the PS5 target.



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