[PATCH] D143143: [AArch64] Reassociate sub(x, add(m1, m2)) to sub(sub(x, m1), m2)

[Martin Storsjö via Phabricator via llvm-commits]

mstorsjo added a comment.

This caused hangs when compiling some source files from ffmpeg, libvpx and libaom. One repro is available at https://martin.st/temp/adxenc.c, triggered with `clang -target aarch64-w64-mingw32 -c -O2 adxenc.c -w`.

I’ll push a revert soon.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D143143/new/

https://reviews.llvm.org/D143143