[all-commits] [llvm/llvm-project] fb3665: [Memory] Call __clear_cache in InvalidateInstructi...

[Lu Weining via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fb366581e7d67df7d9a98605fd65a7e7908451e7
      https://github.com/llvm/llvm-project/commit/fb366581e7d67df7d9a98605fd65a7e7908451e7
  Author: Lu Weining <luweining at loongson.cn>
  Date:   2023-10-19 (Thu, 19 Oct 2023)

  Changed paths:
    M llvm/lib/Support/Unix/Memory.inc

  Log Message:
  -----------
  [Memory] Call __clear_cache in InvalidateInstructionCache on LoongArch (#67285)

As the comments of `InvalidateInstructionCache`: Before the JIT can run
a block of code that has been emitted it must invalidate the instruction
cache on some platforms. I think it applies to LoongArch as LoongArch
has a weak memory-model. But I'm not able to write a test to demonstrate
this issue. Perhaps self-modifing code should be wrote?