Commit Graph

6 Commits

Author SHA1 Message Date
Simon Pilgrim b398da1d5c [X86][SSE] shift/rotate tests - remove unnecessary mcpu arguments and regenerate/cleanup
llvm-svn: 251232
2015-10-25 12:07:45 +00:00
Simon Pilgrim 3d11c994f7 [X86][XOP] Added support for the lowering of 128-bit vector shifts to XOP shift instructions
The XOP shifts just have logical/arithmetic versions and the left/right shifts are controlled by whether the value is positive/negative. Because of this I've added new X86ISD nodes instead of trying to force them to use the existing shift nodes.

Additionally Excavator cores (bdver4) support XOP and AVX2 - meaning that it should use the AVX2 shifts when it can and fall back to XOP in other cases.

Differential Revision: http://reviews.llvm.org/D8690

llvm-svn: 248878
2015-09-30 08:17:50 +00:00
Simon Pilgrim 769d58f9df [X86][SSE] Added nounwind attribute to vector shift tests.
Stop i686 codegen from generating cfi directives.

llvm-svn: 242443
2015-07-16 21:14:26 +00:00
Simon Pilgrim 64cc4ad0a2 [X86][SSE] Vectorized v4i32 non-uniform shifts.
While the v4i32 shl operation is already vectorized using a cvttps2dq/pmulld pattern, the lshr/ashr opeations are still scalarized.

This patch adds vectorization support for non-uniform v4i32 shift operations - it splats constant shift amounts to allow them to use the immediate sse shift instructions, or extracts/zero-extends non-constant shift amounts. The individual results are then blended together.

Differential Revision: http://reviews.llvm.org/D11063

llvm-svn: 241989
2015-07-12 11:15:19 +00:00
Simon Pilgrim d865503b59 [X86][SSE] Vector shift test cleanup. NFC.
llvm-svn: 241730
2015-07-08 21:11:17 +00:00
Simon Pilgrim 51aa1f86fb [X86][AVX] Added full set of 256-bit vector shift tests.
llvm-svn: 240542
2015-06-24 13:52:25 +00:00