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https://github.com/saymrwulf/pytorch.git
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c130b8a716
Reintroduce s390x SIMD support Use vectorized FMA to fix test precision failures Pull Request resolved: https://github.com/pytorch/pytorch/pull/99057 Approved by: https://github.com/malfet
56 lines
2.1 KiB
CMake
56 lines
2.1 KiB
CMake
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IF(CMAKE_SYSTEM_NAME MATCHES "Linux")
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message("-- <FindZVECTOR>")
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set(Z_ARCH_LIST "")
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#firstly, tries to add the arch of the platform
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EXEC_PROGRAM(LD_SHOW_AUXV=1 ARGS "/bin/true" OUTPUT_VARIABLE bintrue)
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if(bintrue MATCHES "AT_PLATFORM:[ \\t\\n\\r]*([a-zA-Z0-9_]+)[ \\t\\n\\r]*")
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if(CMAKE_MATCH_COUNT GREATER 0)
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string(TOLOWER ${CMAKE_MATCH_1} platform)
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if(${platform} MATCHES "^z(14|15|16)")
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message("-- Z ARCH Platform: ${platform}")
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list( APPEND Z_ARCH_LIST "${platform}" )
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endif()
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endif()
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endif()
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#adds other archs in descending order. as its cached nothing will be checked twice
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list( APPEND Z_ARCH_LIST "z16" )
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list( APPEND Z_ARCH_LIST "z15" )
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list( APPEND Z_ARCH_LIST "z14" )
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SET(VECTORIZATION_CODE "
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#include <vecintrin.h>
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using vuint32 = __attribute__ ((vector_size (16))) unsigned int;
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using vfloat32 = __attribute__ ((vector_size (16))) float;
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vfloat32 vsel_ext(vuint32 o, vfloat32 x, vfloat32 y)
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{
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return vec_sel(y, x, o);
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}
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int main(){
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vfloat32 h1 ={3.f, 4.f, 5.f, 6.f};
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vfloat32 h2 = {9.f, 8.f, 11.f, 12.f};
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vuint32 selector= {0xFFFFFFFF, 0, 0xFFFFFFFF, 0xFFFFFFFF};
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vfloat32 hf = vsel_ext(selector, h1,h2);
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int ret = (int)(hf[0]*1000+hf[1]*100+hf[2]*10+hf[3]);
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return ret==3856;
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}
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")
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foreach(Z_ARCH ${Z_ARCH_LIST})
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SET(ARCH_SIMD_TEST_FLAGS_${Z_ARCH} " -mvx -mzvector -march=${Z_ARCH} -mtune=${Z_ARCH}")
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message("-- check ${Z_ARCH}")
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SET(CMAKE_REQUIRED_FLAGS_SAVE ${CMAKE_REQUIRED_FLAGS})
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SET(CMAKE_REQUIRED_FLAGS "${ARCH_SIMD_TEST_FLAGS_${Z_ARCH}}")
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set(VECTORIZATION_CODE_${Z_ARCH} "${VECTORIZATION_CODE}")
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CHECK_CXX_SOURCE_COMPILES("${VECTORIZATION_CODE_${Z_ARCH}}" COMPILE_OUT_${Z_ARCH})
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SET(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS_SAVE})
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if(COMPILE_OUT_${Z_ARCH})
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message("-- ${Z_ARCH} SIMD flags were set.")
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set(CXX_ZVECTOR_FOUND TRUE)
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SET(CXX_ZVECTOR_FLAGS "${ARCH_SIMD_TEST_FLAGS_${Z_ARCH}}" )
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break()
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endif()
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endforeach()
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message("-- </FindZVECTOR>")
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endif()
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