llvm-project

Commit Graph

Author	SHA1	Message	Date
Simon Pilgrim	3e5fb61978	[X86][AVX2] Broadcast subvectors AVX2 can only broadcast from the zero'th element of a vector, but if the broadcastable element is the zero'th element of a 128-bit subvector its advantageous to extract the subvector, broadcast from that and avoid the loading of shuffle mask data that would be needed for VPERMPS/VPERMD. The only exception being when the source type is 4f64 or 4i64 which can directly use the immediate shuffle VPERMPD/VPERMQ directly. Differential Revision: http://reviews.llvm.org/D16050 llvm-svn: 258081	2016-01-18 20:59:04 +00:00
James Y Knight	7c905063c5	Make utils/update_llc_test_checks.py note that the assertions are autogenerated. Also update existing test cases which appear to be generated by it and weren't modified (other than addition of the header) by rerunning it. llvm-svn: 253917	2015-11-23 21:33:58 +00:00
Elena Demikhovsky	e88038f235	AVX-512: Lowering for 512-bit vector shuffles. Vector types: <8 x 64>, <16 x 32>, <32 x 16> float and integer. Differential Revision: http://reviews.llvm.org/D10683 llvm-svn: 246981	2015-09-08 06:38:21 +00:00

Author

SHA1

Message

Date

Simon Pilgrim

3e5fb61978

[X86][AVX2] Broadcast subvectors

AVX2 can only broadcast from the zero'th element of a vector, but if the broadcastable element is the zero'th element of a 128-bit subvector its advantageous to extract the subvector, broadcast from that and avoid the loading of shuffle mask data that would be needed for VPERMPS/VPERMD. The only exception being when the source type is 4f64 or 4i64 which can directly use the immediate shuffle VPERMPD/VPERMQ directly.

Differential Revision: http://reviews.llvm.org/D16050

llvm-svn: 258081

2016-01-18 20:59:04 +00:00

James Y Knight

7c905063c5

Make utils/update_llc_test_checks.py note that the assertions are

autogenerated.

Also update existing test cases which appear to be generated by it and
weren't modified (other than addition of the header) by rerunning it.

llvm-svn: 253917

2015-11-23 21:33:58 +00:00

Elena Demikhovsky

e88038f235

AVX-512: Lowering for 512-bit vector shuffles.

Vector types: <8 x 64>, <16 x 32>, <32 x 16> float and integer.

Differential Revision: http://reviews.llvm.org/D10683

llvm-svn: 246981

2015-09-08 06:38:21 +00:00

3 Commits