[all-commits] [llvm/llvm-project] f3c4da: [ELF] -no-pie: don't optimize addq R_X86_64_REX_GO...

[Fangrui Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f3c4dae6f2c44f1a7f130c4cf4b2861b62402b48
      https://github.com/llvm/llvm-project/commit/f3c4dae6f2c44f1a7f130c4cf4b2861b62402b48
  Author: Fangrui Song <i at maskray.me>
  Date:   2024-06-20 (Thu, 20 Jun 2024)

  Changed paths:
    M lld/ELF/Arch/X86_64.cpp
    M lld/test/ELF/x86-64-gotpc-relax-too-far.s

  Log Message:
  -----------
  [ELF] -no-pie: don't optimize addq R_X86_64_REX_GOTPCRELX when !isInt<32>(va)

When `!isInt<32>(x.va)`, `addq x at GOTPCREL(%rip), %rax` (possibly due to
getelementptr of a global variable) should not be optimized to
`addq offset, %rax`. We currently have either an assertion failure or an
incorrect optimization.
Fix it using the relaxOnce framework.



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