[InstCombine] add FIXME comment to shuffle transform; NFC
authorSanjay Patel <spatel@rotateright.com>
Tue, 4 Feb 2020 17:59:23 +0000 (12:59 -0500)
committerSanjay Patel <spatel@rotateright.com>
Tue, 4 Feb 2020 18:02:06 +0000 (13:02 -0500)
commitdc42ff6697db1847a6e2f154de07f6e1f3d97ae4
treefb845ff234ec04602c99b7d94e033d8f7eaf8455
parenta3c814d23497bc71b8ed53c35f773366aff02922
[InstCombine] add FIXME comment to shuffle transform; NFC

Existing tests:
rG5d04e008f708
rG2a191cf8500f
...should verify that the underlying analysis doesn't improve
too much without updating this user code.
llvm/lib/Transforms/InstCombine/InstructionCombining.cpp