llvm-6502/lib/Target/X86/Utils
Chandler Carruth 8470b5b812 [x86] Flip the sentinel values used in the target shuffle mask decoding
to significantly more sane sentinels. Notably, everywhere else in the
backend's representation of shuffles uses '-1' to represent undef. The
target shuffle masks really shouldn't diverge from that, especially as
in a few places they are manipulated by shared code.

This causes us to lose some undef lanes in various test masks. I want to
get these back, but technically it isn't invalid and there are a *lot*
of bugs here so I want to try to establish a saner baseline for fixing
some of the bugs by aligning the specific senitnel values used.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218561 91177308-0d34-0410-b5e6-96231b3b80d8
2014-09-27 04:42:39 +00:00
..
CMakeLists.txt
LLVMBuild.txt Update X86/Utils/LLVMBuild.txt corresponding to r213986. "Core" has been introduced. 2014-07-26 00:45:43 +00:00
Makefile
X86ShuffleDecode.cpp [x86] Implement v16i16 support with AVX2 in the new vector shuffle 2014-09-25 00:24:19 +00:00
X86ShuffleDecode.h [x86] Flip the sentinel values used in the target shuffle mask decoding 2014-09-27 04:42:39 +00:00