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Avoid breaking the build on older compilers.

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See merge request libeigen/eigen!2068

Co-authored-by: Rasmus Munk Larsen <rmlarsen@google.com>
This commit is contained in:
Rasmus Munk Larsen
2025-11-07 21:25:09 +00:00
parent da867c31c9
commit ffcd7bdbd6
4 changed files with 20 additions and 12 deletions
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14
Eigen/src/Core/arch/clang/PacketMath.h
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@@ -458,8 +458,8 @@ EIGEN_CLANG_PACKET_BITWISE_FLOAT(Packet8d, detail::pcast_double_to_long, detail:
#undef EIGEN_CLANG_PACKET_BITWISE_FLOAT
// --- Min/Max operations ---
#if __has_builtin(__builtin_elementwise_min) && __has_builtin(__builtin_elementwise_max) && \
__has_builtin(__builtin_elementwise_abs)
#if EIGEN_HAS_BUILTIN(__builtin_elementwise_min) && EIGEN_HAS_BUILTIN(__builtin_elementwise_max) && \
EIGEN_HAS_BUILTIN(__builtin_elementwise_abs)
#define EIGEN_CLANG_PACKET_ELEMENTWISE(PACKET_TYPE) \
template <> \
EIGEN_STRONG_INLINE PACKET_TYPE pmin<PACKET_TYPE>(const PACKET_TYPE& a, const PACKET_TYPE& b) { \
@@ -506,9 +506,9 @@ EIGEN_CLANG_PACKET_ELEMENTWISE(Packet8l)
// --- Math functions (float/double only) ---
#if __has_builtin(__builtin_elementwise_floor) && __has_builtin(__builtin_elementwise_ceil) && \
__has_builtin(__builtin_elementwise_round) && __has_builtin(__builtin_elementwise_roundeven) && \
__has_builtin(__builtin_elementwise_trunc) && __has_builtin(__builtin_elementwise_sqrt)
#if EIGEN_HAS_BUILTIN(__builtin_elementwise_floor) && EIGEN_HAS_BUILTIN(__builtin_elementwise_ceil) && \
EIGEN_HAS_BUILTIN(__builtin_elementwise_round) && EIGEN_HAS_BUILTIN(__builtin_elementwise_roundeven) && \
EIGEN_HAS_BUILTIN(__builtin_elementwise_trunc) && EIGEN_HAS_BUILTIN(__builtin_elementwise_sqrt)
#define EIGEN_CLANG_PACKET_MATH_FLOAT(PACKET_TYPE) \
template <> \
EIGEN_STRONG_INLINE PACKET_TYPE pfloor<PACKET_TYPE>(const PACKET_TYPE& a) { \
@@ -541,7 +541,7 @@ EIGEN_CLANG_PACKET_MATH_FLOAT(Packet8d)
#endif
// --- Fused Multiply-Add (MADD) ---
#if defined(__FMA__) && __has_builtin(__builtin_elementwise_fma)
#if defined(__FMA__) && EIGEN_HAS_BUILTIN(__builtin_elementwise_fma)
#define EIGEN_CLANG_PACKET_MADD(PACKET_TYPE) \
template <> \
EIGEN_STRONG_INLINE PACKET_TYPE pmadd<PACKET_TYPE>(const PACKET_TYPE& a, const PACKET_TYPE& b, \
@@ -603,7 +603,7 @@ EIGEN_CLANG_PACKET_SCATTER_GATHER(Packet8l)
#undef EIGEN_CLANG_PACKET_SCATTER_GATHER
// ---- Various operations that depend on __builtin_shufflevector.
#if __has_builtin(__builtin_shufflevector)
#if EIGEN_HAS_BUILTIN(__builtin_shufflevector)
namespace detail {
template <typename Packet>
EIGEN_STRONG_INLINE Packet preverse_impl_8(const Packet& a) {

7
Eigen/src/Core/arch/clang/Reductions.h
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@@ -14,7 +14,8 @@ namespace Eigen {
namespace internal {
// --- Reductions ---
#if __has_builtin(__builtin_reduce_min) && __has_builtin(__builtin_reduce_max) && __has_builtin(__builtin_reduce_or)
#if EIGEN_HAS_BUILTIN(__builtin_reduce_min) && EIGEN_HAS_BUILTIN(__builtin_reduce_max) && \
EIGEN_HAS_BUILTIN(__builtin_reduce_or)
#define EIGEN_CLANG_PACKET_REDUX_MINMAX(PACKET_TYPE) \
template <> \
EIGEN_STRONG_INLINE unpacket_traits<PACKET_TYPE>::type predux_min(const PACKET_TYPE& a) { \
@@ -36,7 +37,7 @@ EIGEN_CLANG_PACKET_REDUX_MINMAX(Packet8l)
#undef EIGEN_CLANG_PACKET_REDUX_MINMAX
#endif
#if __has_builtin(__builtin_reduce_add) && __has_builtin(__builtin_reduce_mul)
#if EIGEN_HAS_BUILTIN(__builtin_reduce_add) && EIGEN_HAS_BUILTIN(__builtin_reduce_mul)
#define EIGEN_CLANG_PACKET_REDUX_INT(PACKET_TYPE) \
template <> \
EIGEN_STRONG_INLINE unpacket_traits<PACKET_TYPE>::type predux<PACKET_TYPE>(const PACKET_TYPE& a) { \
@@ -53,7 +54,7 @@ EIGEN_CLANG_PACKET_REDUX_INT(Packet8l)
#undef EIGEN_CLANG_PACKET_REDUX_INT
#endif
#if __has_builtin(__builtin_shufflevector)
#if EIGEN_HAS_BUILTIN(__builtin_shufflevector)
namespace detail {
template <typename VectorT>
EIGEN_STRONG_INLINE scalar_type_of_vector_t<VectorT> ReduceAdd16(const VectorT& a) {

2
Eigen/src/Core/arch/clang/TypeCasting.h
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@@ -37,7 +37,7 @@ EIGEN_STRONG_INLINE Packet8l preinterpret<Packet8l, Packet8d>(const Packet8d& a)
//==============================================================================
// pcast
//==============================================================================
#if __has_builtin(__builtin_convertvector)
#if EIGEN_HAS_BUILTIN(__builtin_convertvector)
template <>
EIGEN_STRONG_INLINE Packet16i pcast<Packet16f, Packet16i>(const Packet16f& a) {
return __builtin_convertvector(a, Packet16i);

9
Eigen/src/Core/util/Macros.h
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@@ -700,6 +700,13 @@
#define EIGEN_HAS_BUILTIN(x) 0
#endif
// Cross compiler wrapper around LLVM's __has_attribute
#ifdef __has_attribute
#define EIGEN_HAS_ATTRIBUTE(x) __has_attribute(x)
#else
#define EIGEN_HAS_ATTRIBUTE(x) 0
#endif
// A Clang feature extension to determine compiler features.
// We use it to determine 'cxx_rvalue_references'
#ifndef __has_feature
@@ -831,7 +838,7 @@
#endif
// Does the compiler support vector types?
#if __has_attribute(ext_vector_type) && __has_builtin(__builtin_vectorelements)
#if EIGEN_HAS_ATTRIBUTE(ext_vector_type) && EIGEN_HAS_BUILTIN(__builtin_vectorelements)
#define EIGEN_ARCH_VECTOR_EXTENSIONS 1
#else
#define EIGEN_ARCH_VECTOR_EXTENSIONS 0