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fix bug #201: Clang too has intrinsics bugs preventing us to use custom unaligned loads

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This commit is contained in:
Benoit Jacob 2011-02-27 21:59:07 -05:00
parent 32025a2510
commit 0612768c1c
1 changed files with 14 additions and 3 deletions
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17
Eigen/src/Core/arch/SSE/PacketMath.h
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@ -245,10 +245,21 @@ template<> EIGEN_STRONG_INLINE Packet4i pload<Packet4i>(const int* from) { E
// a correct instruction dependency.
// TODO: do the same for MSVC (ICC is compatible)
// NOTE: with the code below, MSVC's compiler crashes!
#if defined(__GNUC__) && defined(__i386__)
// bug 195: gcc/i386 emits weird x87 fldl/fstpl instructions for _mm_load_sd
#define EIGEN_AVOID_CUSTOM_UNALIGNED_LOADS 1
#elif defined(__clang__)
// bug 201: Segfaults in __mm_loadh_pd with clang 2.8
#define EIGEN_AVOID_CUSTOM_UNALIGNED_LOADS 1
#else
#define EIGEN_AVOID_CUSTOM_UNALIGNED_LOADS 0
#endif
template<> EIGEN_STRONG_INLINE Packet4f ploadu<Packet4f>(const float* from)
{
EIGEN_DEBUG_UNALIGNED_LOAD
#if defined(__GNUC__) && defined(__i386__)
#if EIGEN_AVOID_CUSTOM_UNALIGNED_LOADS
// bug 195: gcc/i386 emits weird x87 fldl/fstpl instructions for _mm_load_sd
return _mm_loadu_ps(from);
#else
@ -261,7 +272,7 @@ template<> EIGEN_STRONG_INLINE Packet4f ploadu<Packet4f>(const float* from)
template<> EIGEN_STRONG_INLINE Packet2d ploadu<Packet2d>(const double* from)
{
EIGEN_DEBUG_UNALIGNED_LOAD
#if defined(__GNUC__) && defined(__i386__)
#if EIGEN_AVOID_CUSTOM_UNALIGNED_LOADS
// bug 195: gcc/i386 emits weird x87 fldl/fstpl instructions for _mm_load_sd
return _mm_loadu_pd(from);
#else
@ -274,7 +285,7 @@ template<> EIGEN_STRONG_INLINE Packet2d ploadu<Packet2d>(const double* from)
template<> EIGEN_STRONG_INLINE Packet4i ploadu<Packet4i>(const int* from)
{
EIGEN_DEBUG_UNALIGNED_LOAD
#if defined(__GNUC__) && defined(__i386__)
#if EIGEN_AVOID_CUSTOM_UNALIGNED_LOADS
// bug 195: gcc/i386 emits weird x87 fldl/fstpl instructions for _mm_load_sd
return _mm_loadu_si128(reinterpret_cast<const Packet4i*>(from));
#else