[all-commits] [llvm/llvm-project] e6ce0d: [MCA] Ensure that writes occur in-order

[Andrew Savonichev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e6ce0db378473c1d264152f370af719903b98bf8
      https://github.com/llvm/llvm-project/commit/e6ce0db378473c1d264152f370af719903b98bf8
  Author: Andrew Savonichev <andrew.savonichev at gmail.com>
  Date:   2021-03-18 (Thu, 18 Mar 2021)

  Changed paths:
    M llvm/include/llvm/MCA/Stages/InOrderIssueStage.h
    M llvm/lib/MCA/Stages/InOrderIssueStage.cpp
    M llvm/test/tools/llvm-mca/AArch64/Cortex/A55-all-stats.s
    M llvm/test/tools/llvm-mca/AArch64/Cortex/A55-all-views.s
    M llvm/test/tools/llvm-mca/AArch64/Cortex/A55-in-order-retire.s

  Log Message:
  -----------
  [MCA] Ensure that writes occur in-order

Delay the issue of a new instruction if that leads to out-of-order
commits of writes.

This patch fixes the problem described in:
https://bugs.llvm.org/show_bug.cgi?id=41796#c3

Differential Revision: https://reviews.llvm.org/D98604