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6 Commits

Author SHA1 Message Date
Craig Topper fa875a1d3d [AVX-512] Teach EVEX to VEX conversion pass to handle VINSERT and VEXTRACT instructions. 
llvm-svn: 290869
 2017-01-03 05:46:18 +00:00
Craig Topper 0cda8bbf74 [AVX-512] Remove vinsert intrinsics and autoupgrade to native shufflevectors. There are some codegen problems here that I'll try to fix in future commits. 
llvm-svn: 290864
 2017-01-03 05:45:57 +00:00
Craig Topper 4d47c6ae57 [AVX-512] Remove vextract intrinsics and autoupgrade to native shufflevectors. This unfortunately generates some really terrible code without VLX support due to v2i1 and v4i1 not being legal. 
Hopefully we can improve that in future patches.

llvm-svn: 290863
 2017-01-03 05:45:46 +00:00
Gadi Haber 19c4fc5e62 This is a large patch for X86 AVX-512 of an optimization for reducing code size by encoding EVEX AVX-512 instructions using the shorter VEX encoding when possible. 
There are cases of AVX-512 instructions that have two possible encodings. This is the case with instructions that use vector registers with low indexes of 0 - 15 and do not use the zmm registers or the mask k registers.
The EVEX encoding prefix requires 4 bytes whereas the VEX prefix can take only up to 3 bytes. Consequently, using the VEX encoding for these instructions results in a code size reduction of ~2 bytes even though it is compiled with the AVX-512 features enabled.

Reviewers: Craig Topper, Zvi Rackoover, Elena Demikhovsky 
Differential Revision: https://reviews.llvm.org/D27901

llvm-svn: 290663
 2016-12-28 10:12:48 +00:00
Craig Topper af0d63d2e7 [AVX-512] Remove masked integer add/sub/mull intrinsics and upgrade to native IR. 
llvm-svn: 280611
 2016-09-04 02:09:53 +00:00
Craig Topper ad79bf4712 [AVX-512] Move tests for masked floating point logical operations to avx512dqvl-intrinsics-upgrade.ll since they have now been autoupgraded. 
llvm-svn: 280467
 2016-09-02 06:11:31 +00:00