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Disable AVX on broken xcode versions. See PR 748.

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Patch adapted from Hans Johnson's PR 748.
This commit is contained in:
Gael Guennebaud 2019-11-12 11:40:38 +01:00
parent 0ed0338593
commit 71aa53dd6d
1 changed files with 32 additions and 1 deletions
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33
Eigen/src/Core/util/ConfigureVectorization.h
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@ -212,7 +212,6 @@
#endif
#endif
#if !(defined(EIGEN_DONT_VECTORIZE) || defined(EIGEN_GPUCC))
#if defined (EIGEN_SSE2_ON_NON_MSVC_BUT_NOT_OLD_GCC) || defined(EIGEN_SSE2_ON_MSVC_2008_OR_LATER)
@ -284,6 +283,38 @@
#endif
#endif
// Disable AVX support on broken xcode versions
#if defined(__apple_build_version__) && (__apple_build_version__ == 11000033 ) && ( __MAC_OS_X_VERSION_MIN_REQUIRED == 101500 )
// A nasty bug in the clang compiler shipped with xcode in a common compilation situation
// when XCode 11.0 and Mac deployment target macOS 10.15 is https://trac.macports.org/ticket/58776#no1
#ifdef EIGEN_VECTORIZE_AVX
#undef EIGEN_VECTORIZE_AVX
#warning "Disabling AVX support: clang compiler shipped with XCode 11.[012] generates broken assembly with -macosx-version-min=10.15 and AVX enabled. "
#ifdef EIGEN_VECTORIZE_AVX2
#undef EIGEN_VECTORIZE_AVX2
#endif
#ifdef EIGEN_VECTORIZE_FMA
#undef EIGEN_VECTORIZE_FMA
#endif
#ifdef EIGEN_VECTORIZE_AVX512
#undef EIGEN_VECTORIZE_AVX512
#endif
#ifdef EIGEN_VECTORIZE_AVX512DQ
#undef EIGEN_VECTORIZE_AVX512DQ
#endif
#ifdef EIGEN_VECTORIZE_AVX512ER
#undef EIGEN_VECTORIZE_AVX512ER
#endif
#endif
// NOTE: Confirmed test failures in XCode 11.0, and XCode 11.2 with -macosx-version-min=10.15 and AVX
// NOTE using -macosx-version-min=10.15 with Xcode 11.0 results in runtime segmentation faults in many tests, 11.2 produce core dumps in 3 tests
// NOTE using -macosx-version-min=10.14 produces functioning and passing tests in all cases
// NOTE __clang_version__ "11.0.0 (clang-1100.0.33.8)" XCode 11.0 <- Produces many segfault and core dumping tests
// with -macosx-version-min=10.15 and AVX
// NOTE __clang_version__ "11.0.0 (clang-1100.0.33.12)" XCode 11.2 <- Produces 3 core dumping tests with
// -macosx-version-min=10.15 and AVX
#endif
// include files
// This extern "C" works around a MINGW-w64 compilation issue