[all-commits] [llvm/llvm-project] 07d0a4: [ELF][RISCV] Make .sdata and .sbss closer

[Fangrui Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 07d0a4fb537f15d68385c0598d3b0dbf9e99763d
      https://github.com/llvm/llvm-project/commit/07d0a4fb537f15d68385c0598d3b0dbf9e99763d
  Author: Fangrui Song <i at maskray.me>
  Date:   2023-03-07 (Tue, 07 Mar 2023)

  Changed paths:
    M lld/ELF/Writer.cpp
    R lld/test/ELF/riscv-gp-no-sdata.s
    A lld/test/ELF/riscv-section-layout.s

  Log Message:
  -----------
  [ELF][RISCV] Make .sdata and .sbss closer

GNU ld's internal linker scripts for RISC-V place .sdata and .sbss close.
This makes GP relaxation more profitable.

While here, when .sbss is present, set `__bss_start` to the start of
.sbss instead of .bss, to match GNU ld.

Note: GNU ld's internal linker scripts have symbol assignments and input
section descriptions which are not relevant for modern systems. We only
add things that make sense.

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D145118