[all-commits] [llvm/llvm-project] 7de82c: [BOLT] Don't terminate on trap instruction for Lin...

[Maksim Panchenko via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7de82ca369b5e9114636420a16e1c5d25283421d
      https://github.com/llvm/llvm-project/commit/7de82ca369b5e9114636420a16e1c5d25283421d
  Author: Maksim Panchenko <maks at fb.com>
  Date:   2024-03-29 (Fri, 29 Mar 2024)

  Changed paths:
    M bolt/include/bolt/Core/MCPlusBuilder.h
    M bolt/lib/Core/MCPlusBuilder.cpp
    M bolt/lib/Rewrite/RewriteInstance.cpp
    M bolt/lib/Target/X86/X86MCPlusBuilder.cpp
    M bolt/test/X86/linux-bug-table.s

  Log Message:
  -----------
  [BOLT] Don't terminate on trap instruction for Linux kernel (#87021)

Under normal circumstances, we terminate basic blocks on a trap
instruction. However, Linux kernel may resume execution after hitting a
trap (ud2 on x86). Thus, we introduce "--terminal-trap" option that will
specify if the trap instruction should terminate the control flow. The
option is on by default except for the Linux kernel mode when it's off.



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