[X86] Add some comments about when some X86 intrinsic autoupgrade code was added.
authorCraig Topper <craig.topper@intel.com>
Sun, 9 Dec 2018 18:02:40 +0000 (18:02 +0000)
committerCraig Topper <craig.topper@intel.com>
Sun, 9 Dec 2018 18:02:40 +0000 (18:02 +0000)
commit7ca55323ce582b19767fbf3a207372c43f728ffc
tree0b0645cb67b7652ddcc0e94028f062e31ccdd5aa
parent2b09d17d93d8a3cdc98747a4d2d4d6be5840087f
[X86] Add some comments about when some X86 intrinsic autoupgrade code was added.

Someday we'd like to remove old autoupgrade code so it helps to annotate how long its been there so we don't have to go digging through commit history.

llvm-svn: 348728
llvm/lib/IR/AutoUpgrade.cpp