llvm-project

Commit Graph

Author	SHA1	Message	Date
Simon Pilgrim	ca1da1bf07	[X86][SSE] Improved blend+zero target shuffle combining to use combined shuffle mask directly We currently only combine to blend+zero if the target value type has 8 elements or less, but this was missing a lot of cases where the combined mask had been widened. This change makes it so we use the combined mask to determine the blend value type, allowing us to catch more widened cases. llvm-svn: 272003	2016-06-07 12:20:14 +00:00
Simon Pilgrim	aab59b7a28	[X86][SSE] Some basic tests for variable shuffles We don't really support non-constant shuffle masks, but these tests are for cases where BUILD_VECTOR is made up from vector extracts (as well as undef/zero scalars). llvm-svn: 265045	2016-03-31 20:26:30 +00:00

Author

SHA1

Message

Date

Simon Pilgrim

ca1da1bf07

[X86][SSE] Improved blend+zero target shuffle combining to use combined shuffle mask directly

We currently only combine to blend+zero if the target value type has 8 elements or less, but this was missing a lot of cases where the combined mask had been widened.

This change makes it so we use the combined mask to determine the blend value type, allowing us to catch more widened cases.

llvm-svn: 272003

2016-06-07 12:20:14 +00:00

Simon Pilgrim

aab59b7a28

[X86][SSE] Some basic tests for variable shuffles

We don't really support non-constant shuffle masks, but these tests are for cases where BUILD_VECTOR is made up from vector extracts (as well as undef/zero scalars).

llvm-svn: 265045

2016-03-31 20:26:30 +00:00

2 Commits