[all-commits] [llvm/llvm-project] 7b23f4: MCAsmStreamer: Omit initial ".text"

[Fangrui Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7b23f413d1f76532825e470b523e971818d453ca
      https://github.com/llvm/llvm-project/commit/7b23f413d1f76532825e470b523e971818d453ca
  Author: Fangrui Song <i at maskray.me>
  Date:   2024-12-22 (Sun, 22 Dec 2024)

  Changed paths:
    M llvm/include/llvm/MC/MCStreamer.h
    M llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
    M llvm/lib/MC/MCAsmStreamer.cpp
    M llvm/lib/MC/MCStreamer.cpp
    M llvm/test/CodeGen/PowerPC/check-cpu.ll
    M llvm/test/CodeGen/X86/coff-alias-type.ll
    M llvm/test/DebugInfo/ARM/header.ll
    M llvm/test/DebugInfo/X86/header.ll
    M llvm/test/MC/AArch64/armv8.3a-signed-pointer.s
    M llvm/test/MC/ELF/section.s
    M llvm/test/MC/Hexagon/hexagon_attributes.s

  Log Message:
  -----------
  MCAsmStreamer: Omit initial ".text"

llvm-mc --assemble prints an initial `.text` from `initSections`.
This is weird for quick assembly tasks that do not specify `.text`.

Omit the .text by moving section directive printing from `changeSection`
to `switchSection`. switchSectionNoPrint now correctly calls the
`changeSection` hook (needed by MachO).

The initial directives of clang -S are now reordered. On ELF targets, we
get `.file "a.c"; .text` instead of `.text; .file "a.c"`.
If there is no function, `.text` will be omitted.



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