llvm-project

Commit Graph

Author	SHA1	Message	Date
Simon Pilgrim	05e48b95eb	[X86][SSE] Improve PSHUFB shuffle mask decoding. In cases where the PSHUFB shuffle mask is shared it might not be bitcasted to a vXi8 byte vector. This patch adds support for decoding these wider shuffle masks from the ConstantPool. The test case in question makes use of this to recognise the shuffle mask is an unary UNPCKL pattern and simplifies accordingly. llvm-svn: 261201	2016-02-18 10:17:40 +00:00
Craig Topper	69653af748	[X86] Move shuffle decoding for constant pool into the X86CodeGen library to remove a layering violation in the Util library. llvm-svn: 256680	2015-12-31 22:40:45 +00:00

Author

SHA1

Message

Date

Simon Pilgrim

05e48b95eb

[X86][SSE] Improve PSHUFB shuffle mask decoding.

In cases where the PSHUFB shuffle mask is shared it might not be bitcasted to a vXi8 byte vector. This patch adds support for decoding these wider shuffle masks from the ConstantPool.

The test case in question makes use of this to recognise the shuffle mask is an unary UNPCKL pattern and simplifies accordingly.

llvm-svn: 261201

2016-02-18 10:17:40 +00:00

Craig Topper

69653af748

[X86] Move shuffle decoding for constant pool into the X86CodeGen library to remove a layering violation in the Util library.

llvm-svn: 256680

2015-12-31 22:40:45 +00:00

2 Commits