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5 Commits

Author SHA1 Message Date
Simon Pilgrim 7f1c1db73c [X86][AVX512VL] Added AVX512VL half2float vector conversions tests to demonstrate PR23941 
llvm-svn: 276563
 2016-07-24 13:01:51 +00:00
Craig Topper f4151bea72 [AVX512] Add initial support for the Execution Domain fixing pass to change some EVEX instructions. 
llvm-svn: 276393
 2016-07-22 05:00:52 +00:00
Matthias Braun 152e7c8b12 VirtRegMap: Replace some identity copies with KILL instructions. 
An identity COPY like this:
   %AL = COPY %AL, %EAX<imp-def>
has no semantic effect, but encodes liveness information: Further users
of %EAX only depend on this instruction even though it does not define
the full register.

Replace the COPY with a KILL instruction in those cases to maintain this
liveness information. (This reverts a small part of r238588 but this
time adds a comment explaining why a KILL instruction is useful).

llvm-svn: 274952
 2016-07-09 00:19:07 +00:00
Simon Pilgrim 0a81b13f31 [X86][F16C] Added half <-> double conversion tests 
llvm-svn: 273153
 2016-06-20 12:51:55 +00:00
Simon Pilgrim cf5352db84 [X86][F16C] Added native IR half/float conversion tests. 
Placeholder tests until we start improving native vector support.

llvm-svn: 261989
 2016-02-26 08:52:29 +00:00