[all-commits] [llvm/llvm-project] 8cb6e5: [MC] Allocate MCFragment with a bump allocator

[Fangrui Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8cb6e587fd40b97983e445ee3f17f4c6d7190df7
      https://github.com/llvm/llvm-project/commit/8cb6e587fd40b97983e445ee3f17f4c6d7190df7
  Author: Fangrui Song <i at maskray.me>
  Date:   2024-06-22 (Sat, 22 Jun 2024)

  Changed paths:
    M llvm/include/llvm/MC/MCContext.h
    M llvm/lib/MC/MCCodeView.cpp
    M llvm/lib/MC/MCContext.cpp
    M llvm/lib/MC/MCFragment.cpp

  Log Message:
  -----------
  [MC] Allocate MCFragment with a bump allocator

#95197 and 75006466296ed4b0f845cbbec4bf77c21de43b40 eliminated all raw
`new MCXXXFragment`. We can now place fragments in a bump allocator.
In addition, remove the dead `Kind == FragmentType(~0)` condition.

~CodeViewContext may call `StrTabFragment->destroy()` and need to be
reset before `FragmentAllocator.Reset()`.
Tested by llvm/test/MC/COFF/cv-compiler-info.ll using asan.

Pull Request: https://github.com/llvm/llvm-project/pull/96402



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