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Reverted the definition of the EIGEN_ALIGN to its former meaning (i.e. a boolean)

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Created a new EIGEN_ALIGN_BYTES define to encode how the data should be aligned
Fixed a few remaining alignment issues exposed when the Eigen code is compiled with avx enabled.
Created a new EIGEN_ALIGN_DEFAULT define, which is set to the minimum alignment value required for the chosen instruction set. Use this value instead of EIGEN_ALIGN32 to preserve the existing alignment on SSE/Altivec/Neon.
This commit is contained in:
Benoit Steiner
2014-02-18 18:06:44 -08:00
parent 64a85800bd
commit 7ed9441ea4
13 changed files with 61 additions and 53 deletions
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18
Eigen/src/Core/util/Macros.h
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@@ -66,17 +66,22 @@
#define EIGEN_ARCH_WANTS_STACK_ALIGNMENT 0
#endif
// Defined the boundary (in bytes) on which the data needs to be aligned. Note
// that unless EIGEN_ALIGN is defined and not equal to 0, the data may not be
// aligned at all regardless of the value of this #define.
#define EIGEN_ALIGN_BYTES 16
#ifdef EIGEN_DONT_ALIGN
#ifndef EIGEN_DONT_ALIGN_STATICALLY
#define EIGEN_DONT_ALIGN_STATICALLY
#endif
#define EIGEN_ALIGN 0
#else
#if !defined(EIGEN_DONT_VECTORIZE) && defined(__AVX__)
#define EIGEN_ALIGN 32
#else
#define EIGEN_ALIGN 16
#elif !defined(EIGEN_DONT_VECTORIZE)
#if defined(__AVX__)
#undef EIGEN_ALIGN_BYTES
#define EIGEN_ALIGN_BYTES 32
#endif
#define EIGEN_ALIGN 1
#endif
// EIGEN_ALIGN_STATICALLY is the true test whether we want to align arrays on the stack or not. It takes into account both the user choice to explicitly disable
@@ -286,15 +291,18 @@
#define EIGEN_ALIGN16 EIGEN_ALIGN_TO_BOUNDARY(16)
#define EIGEN_ALIGN32 EIGEN_ALIGN_TO_BOUNDARY(32)
#define EIGEN_ALIGN_DEFAULT EIGEN_ALIGN_TO_BOUNDARY(EIGEN_ALIGN_BYTES)
#if EIGEN_ALIGN_STATICALLY
#define EIGEN_USER_ALIGN_TO_BOUNDARY(n) EIGEN_ALIGN_TO_BOUNDARY(n)
#define EIGEN_USER_ALIGN16 EIGEN_ALIGN16
#define EIGEN_USER_ALIGN32 EIGEN_ALIGN32
#define EIGEN_USER_ALIGN_DEFAULT EIGEN_ALIGN_DEFAULT
#else
#define EIGEN_USER_ALIGN_TO_BOUNDARY(n)
#define EIGEN_USER_ALIGN16
#define EIGEN_USER_ALIGN32
#define EIGEN_USER_ALIGN_DEFAULT
#endif
#ifdef EIGEN_DONT_USE_RESTRICT_KEYWORD