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Rotate is a temporary hack. Would like to merge ALL

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permutes as rotates of length 2, and make any rotate active
over any subset of lane bits. This is hard, and requires general
permute; current intrinsics mean this is only really possible for specific
case by case encodings as presently performed. Intel could produce a general
permute.. would help. IBM did it in VMX.
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paboyle 2016-04-19 15:15:34 -07:00
parent 574ea4f843
commit 04072a5e1f
1 changed files with 2 additions and 0 deletions
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lib/Simd.h
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@ -47,6 +47,8 @@ Author: paboyle <paboyle@ph.ed.ac.uk>
#define _MM_SELECT_FOUR_TWO (A,B,C,D) _MM_SELECT_EIGHT_TWO(0,0,0,0,A,B,C,D)
#define _MM_SELECT_TWO_TWO (A,B) _MM_SELECT_FOUR_TWO(0,0,A,B)
#define RotateBit (0x100)
namespace Grid {
typedef uint32_t Integer;