llvm-project

Commit Graph

Author	SHA1	Message	Date
Simon Pilgrim	3546156122	[X86][SSE] Prefer to combine shuffles to VZEXT over VZEXT_MOVL. This matches what is already done during shuffle lowering and helps prevent the need for a zero-vector in cases where shuffles match both patterns. llvm-svn: 295723	2017-02-21 15:09:00 +00:00
Simon Pilgrim	0c094f504c	[X86][SSE] Added SSE41 shuffle combining test file. Currently just contains one case where we combine to VZEXT_MOVL instead of VZEXT which would avoid the need for a zero vector to be generated llvm-svn: 295721	2017-02-21 14:51:15 +00:00

Author

SHA1

Message

Date

Simon Pilgrim

3546156122

[X86][SSE] Prefer to combine shuffles to VZEXT over VZEXT_MOVL.

This matches what is already done during shuffle lowering and helps prevent the need for a zero-vector in cases where shuffles match both patterns.

llvm-svn: 295723

2017-02-21 15:09:00 +00:00

Simon Pilgrim

0c094f504c

[X86][SSE] Added SSE41 shuffle combining test file.

Currently just contains one case where we combine to VZEXT_MOVL instead of VZEXT which would avoid the need for a zero vector to be generated

llvm-svn: 295721

2017-02-21 14:51:15 +00:00

2 Commits