[all-commits] [llvm/llvm-project] 4ed2b6: [X86][AMX] Fix a bug on tile config.

[Luo, Yuanke via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4ed2b6cccdef912013c84244c3f5ee4c018de9b1
      https://github.com/llvm/llvm-project/commit/4ed2b6cccdef912013c84244c3f5ee4c018de9b1
  Author: Luo, Yuanke <yuanke.luo at intel.com>
  Date:   2021-05-26 (Wed, 26 May 2021)

  Changed paths:
    M llvm/lib/Target/X86/X86PreTileConfig.cpp
    A llvm/test/CodeGen/X86/AMX/amx-gemm.ll

  Log Message:
  -----------
  [X86][AMX] Fix a bug on tile config.

The previous code detect if a MBB is bottom block to determine if it is
a backedge of a loop. We should check latch block instead of bottom
block and we should check the header and the bottom block are in the
same loop.

Differential Revision: https://reviews.llvm.org/D103145