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177 Commits

Author SHA1 Message Date
Benoit Steiner
4fd7f47692 Added an optimized version of rsqrt for SSE and AVX that is used when EIGEN_FAST_MATH is defined. 2015-03-02 09:38:47 -08:00
Benoit Steiner
05089aba75 Switch to truncated casting when converting floating point types to integer. This ensures that vectorized casts are consistent with scalar casts 2015-02-27 09:27:30 -08:00
Benoit Steiner
573b377110 Added support for vectorized type casting of tensors 2015-02-27 08:46:04 -08:00
Benoit Steiner
f41b1f1666 Added support for fast reciprocal square root computation. 2015-02-26 09:42:41 -08:00
Benoit Jacob
9bd8a4bab5 bug #955 - Implement a rotating kernel alternative in the 3px4 gebp path 
This is substantially faster on ARM, where it's important to minimize the number of loads.

This is specific to the case where all packet types are of size 4. I made my best attempt to minimize how dirty this is... opinions welcome.

Eventually one could have a generic rotated kernel, but it would take some work to get there. Also, on sandy bridge, in my experience, it's not beneficial (even about 1% slower).
 2015-02-18 15:03:35 -05:00
Gael Guennebaud
eb563049f7 Remove some dead stores. 2015-02-18 11:26:48 +01:00
Gael Guennebaud
159fb181c2 Disable __m128* wrappers when compiling with AVX and -fabi-version=4 2015-02-17 16:27:20 +01:00
Gael Guennebaud
91ab2489dd Fix compilation with GCC/AVX (workaround __m128 and __m256 being the same type with default ABI) 2015-02-17 16:08:07 +01:00
Gael Guennebaud
45cbb0bbb1 The usage of DenseIndex is deprecated, so let's replace DenseIndex by Index 2015-02-16 15:05:41 +01:00
Gael Guennebaud
0918c51e60 merge Tensor module within Eigen/unsupported and update gemv BLAS wrapper 2015-02-12 21:48:41 +01:00
Gael Guennebaud
fe25f3b8e3 FMA has been wrongly disabled 2015-02-10 23:11:35 +01:00
Benoit Steiner
c739102ef9 Pulled the latest changes from the trunk 2015-02-06 05:25:03 -08:00
Benoit Jacob
0f21613698 bug #936, patch 2/3: Remove EIGEN_VECTORIZE_FMA, was redundant with EIGEN_HAS_SINGLE_INSTRUCTION_MADD 2015-01-30 17:44:26 -05:00
Benoit Jacob
340b8afb14 bug #936, patch 1.5/3: rename _FUSED_ macros to _SINGLE_INSTRUCTION_, 
because this is what they are about. "Fused" means "no intermediate rounding
between the mul and the add, only one rounding at the end". Instead,
what we are concerned about here is whether a temporary register is needed,
i.e. whether the MUL and ADD are separate instructions.
Concretely, on ARM NEON, a single-instruction mul-add is always available: VMLA.
But a true fused mul-add is only available on VFPv4: VFMA.
 2015-01-31 14:15:57 -05:00
Gael Guennebaud
ee06f78679 Introduce unified macros to identify compiler, OS, and architecture. They are all defined in util/Macros.h and prefixed with EIGEN_COMP_, EIGEN_OS_, and EIGEN_ARCH_ respectively. 2014-11-04 21:58:52 +01:00
Christoph Hertzberg
84aaa03182 Addendum to bug #859: pexp(NaN) for double did not return NaN, also, plog(NaN) did not return NaN. 
psqrt(NaN) and psqrt(-1) shall return NaN if EIGEN_FAST_MATH==0
 2014-10-20 13:13:43 +02:00
Gael Guennebaud
aa5f79206f Fix bug #859: pexp(NaN) returned Inf instead of NaN 2014-10-20 11:38:51 +02:00
Benoit Steiner
16047c8d4a Pulled in the latest changes from the Eigen trunk 2014-08-13 22:25:29 -07:00
Gael Guennebaud
b47ef1431f Fix many long to int implicit conversions 2014-07-08 16:47:11 +02:00
Benoit Steiner
29aebf96e6 Created the pblend packet primitive and implemented it using SSE and AVX instructions. 2014-06-06 20:18:44 -07:00
Gael Guennebaud
450d0c3de0 Make sure that calls to broadcast4 are 16 bytes aligned 2014-04-25 22:25:48 +02:00
Gael Guennebaud
3d8d0f6269 Enable vectorization of pack_rhs with a column-major RHS. 
Rename and generalize Kernel<*> to PacketBlock<*,N>.
 2014-04-25 10:56:18 +02:00
Gael Guennebaud
b0e19db1cf Enable fused madd for Altivec 2014-04-24 23:17:18 +02:00
Gael Guennebaud
5c5231ab71 Workaround gcc's default ABI not being able to distinghish between vector types of different sizes. 2014-04-22 16:03:19 +02:00
Gael Guennebaud
d5a795f673 New gebp kernel handling up to 3 packets x 4 register-level blocks. Huge speeup on Haswell. 
This changeset also introduce new vector functions: ploadquad and predux4.
 2014-04-16 17:05:11 +02:00
Benoit Steiner
feaf7c7e6d Optimized SSE unaligned loads and stores when compiling a 64bit target with a recent version of gcc (ie gcc 4.8). 2014-04-14 10:44:17 -07:00
Gael Guennebaud
1c0728043a Workaround alignment warnings 2014-03-30 22:43:47 +02:00
Gael Guennebaud
10aa14592a Add a mechanism to recursively access to half-size packet types 2014-03-28 10:18:04 +01:00
Benoit Steiner
8a94cb3edd Implemented the SSE version of the gather and scatter packet primitives. 2014-03-27 18:29:01 -07:00
Gael Guennebaud
052aedd394 Implement pcplflip, palign, predux and the likes from AVC/complexes 2014-03-27 14:47:00 +01:00
Benoit Steiner
a419cea4a0 Created the ptranspose packet primitive that can transpose an array of N packets, where N is the number of words in each packet. This primitive will be used to complete the vectorization of the gemm_pack_lhs and gemm_pack_rhs functions. 
Implemented the primitive using SSE instructions.
 2014-03-26 19:03:07 -07:00
Benoit Steiner
cc73164aa8 Merged latest updates from the parent branch 2014-03-26 15:23:59 -07:00
Gael Guennebaud
bc401eb6fa Implement new 1 packet x 8 gebp kernel 2014-03-26 18:53:00 +01:00
Gael Guennebaud
b286a1e75c add pbroadcast2/4 generic intrinsics 2014-03-26 16:46:36 +01:00
Benoit Steiner
db7d49efbb Added support for FMA instructions 2014-02-24 13:45:32 -08:00
Benoit Steiner
64a85800bd Added support for AVX to Eigen. 2014-01-29 11:43:05 -08:00
Gael Guennebaud
a7621809fe Remove useless register keyword, and optimize predux_min/max for SSE4 2014-01-25 16:54:13 +01:00
Gael Guennebaud
01fd880424 Revert previous change and introduce a new workaround regarding gcc generating a shufps instruction instead of the more efficient pshufd instruction. 
The trick consists in introducing a new pload1 function to be used in low level product kernels for which bug #203 does not apply.
Indeed, it turned out that using inline assembly prevents gcc of doing a good job at instructtion reordering.
 2014-03-20 16:03:46 +01:00
Gael Guennebaud
c39a3fa7a1 Makes gcc to generate a pshufd instruction for pset1 2014-03-20 10:14:26 +01:00
Gael Guennebaud
9f3f42d66a fix a few "dead stores" warnings 2013-10-26 13:59:02 +02:00
Gael Guennebaud
c47010e3d2 typo 2013-08-19 16:10:00 +02:00
Gael Guennebaud
d4dd6aaed2 Fix bug #642: add vectorization of sqrt for doubles, and make sqrt really safe if EIGEN_FAST_MATH is disabled 2013-08-19 16:02:27 +02:00
Gael Guennebaud
9f11f80db1 Make psqrt works with numeric_limits<float>::min 2013-06-14 10:55:05 +02:00
Jeff Dean
d5fa5001a7 Fix bug #613: psqrt was incorrect for small numbers 2013-06-13 18:17:27 +02:00
Gael Guennebaud
62670c83a0 Fix bug #314: move remaining math functions from internal to numext namespace 2013-06-10 23:40:56 +02:00
Gael Guennebaud
b3adc4face Add missing pconj specializations 2013-05-17 17:25:29 +02:00
Gael Guennebaud
d63712163c Add SSE4 min/max for integers 2013-03-20 18:28:40 +01:00
Gael Guennebaud
8745da14d8 Fix SSE plog<float> to return -INF on 0 2013-02-14 23:34:05 +01:00
Gael Guennebaud
e4ec63aee7 Suppress annoying "may be used uninitialized in this function" warning with gcc >= 4.6 2013-01-24 11:59:17 +01:00
Gael Guennebaud
7d98c864ff fix warning 2012-08-01 10:44:59 +02:00