[all-commits] [llvm/llvm-project] 03ae9f: Revert "[MC] Compute fragment offsets eagerly"

[Fangrui Song via All-commits]

  Branch: refs/heads/release/19.x
  Home:   https://github.com/llvm/llvm-project
  Commit: 03ae9f9fc62b0283505d2d363118b04dd5d947a8
      https://github.com/llvm/llvm-project/commit/03ae9f9fc62b0283505d2d363118b04dd5d947a8
  Author: Fangrui Song <i at maskray.me>
  Date:   2024-08-01 (Thu, 01 Aug 2024)

  Changed paths:
    M llvm/include/llvm/MC/MCAsmBackend.h
    M llvm/include/llvm/MC/MCAssembler.h
    M llvm/include/llvm/MC/MCSection.h
    M llvm/lib/MC/MCAssembler.cpp
    M llvm/lib/MC/MCSection.cpp
    M llvm/lib/Target/Hexagon/MCTargetDesc/HexagonAsmBackend.cpp
    M llvm/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp

  Log Message:
  -----------
  Revert "[MC] Compute fragment offsets eagerly"

This reverts commit 1a47f3f3db66589c11f8ddacfeaecc03fb80c510.

Fix #100283

This commit is actually a trigger of other preexisting problems:

* Size change of fill fragments does not influence the fixed-point iteration.
* The `invalid number of bytes` error is reported too early. Since
  `.zero A-B` might have temporary negative values in the first few
  iterations.

However, the problems appeared at least "benign" (did not affect the
Linux kernel builds) before this commit.

(cherry picked from commit 4eb5450f630849ee0518487de38d857fbe5b1aee)



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