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| author |  Ben Niu <niuben003@gmail.com> | 2021-03-08 19:43:38 +0000 |
|---|---|---|
| committer |  David Tellenbach <david.tellenbach@me.com> | 2021-03-10 10:21:31 +0000 |
| commit | b8d1857f0d87475016b5c16a6a235efa1fd5e9b5 (patch) | |
| tree | ca51f499e73035dcd05feb978ea4c16614dd71bc /Eigen | |
| parent | 853a5c4b843a3f1de5de2a25429eefd62dbd153a (diff) | |
[MSVC-specific] Define EIGEN_ARCH_x86_64 for native x64 (_M_X64 is defined and _M_ARM64EC is not), and define EIGEN_ARCH_ARM64 for both the native ARM64 (_M_ARM64 is defined) or ARM64EC (_M_ARM64EC is defined). _M_ARM64EC is defined when the code is compiled by MSVC for ARM64EC, a new ARM64 ABI designed to be compatible with x64 application emulation on ARM64. If _M_ARM64EC is defined, _M_X64 and _M_AMD64 are also defined, so x64-specific code (especially intrinsics) is also compiled to ARM64 instructions (compliant with the ARM64EC ABI) for maximum x64 compatibility. Although a majority of x64-specific intrinsics can emulated by ARM64 instructions, it is still a good to simply recompile the native ARM64 code paths to ARM64EC for pure computation tasks, for performance reasons.
Diffstat (limited to 'Eigen')
| -rw-r--r-- | Eigen/src/Core/util/Macros.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Eigen/src/Core/util/Macros.h b/Eigen/src/Core/util/Macros.h index 2837b7754..e3a5379bb 100644 --- a/Eigen/src/Core/util/Macros.h +++ b/Eigen/src/Core/util/Macros.h @@ -226,7 +226,7 @@ //------------------------------------------------------------------------------------------ -#if defined(__x86_64__) || defined(_M_X64) || defined(__amd64) +#if defined(__x86_64__) || (defined(_M_X64) && !defined(_M_ARM64EC)) || defined(__amd64) #define EIGEN_ARCH_x86_64 1 #else #define EIGEN_ARCH_x86_64 0 @@ -252,7 +252,7 @@ #endif /// \internal EIGEN_ARCH_ARM64 set to 1 if the architecture is ARM64 -#if defined(__aarch64__) +#if defined(__aarch64__) || defined(_M_ARM64) || defined(_M_ARM64EC) #define EIGEN_ARCH_ARM64 1 #else #define EIGEN_ARCH_ARM64 0 |