[X86] Remove incomplete support for 'Y' has an inline assembly constraint by itself.
authorCraig Topper <craig.topper@intel.com>
Wed, 6 May 2020 21:20:45 +0000 (14:20 -0700)
committerCraig Topper <craig.topper@intel.com>
Wed, 6 May 2020 21:23:04 +0000 (14:23 -0700)
commit9bb9ff09573cf9178341f76a97e2a85b99cc7ae1
tree5cbed0c4e418030b1575b47d96a945b72edff856
parent880115e65ecd7a8838588faf6dfeef5c37e7f586
[X86] Remove incomplete support for 'Y' has an inline assembly constraint by itself.

Y is the start of several 2 letter constraints, but we also had
partial support to recognize it by itself. But it doesn't look
like it can get through clang as a single letter so the backend
support for this was effectively dead.
clang/lib/Basic/Targets/X86.cpp
llvm/lib/Target/X86/X86ISelLowering.cpp