39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
#include <altivec.h>
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// This follows ppc_simd.h. XLC compilers for POWER7 use vec_xlw4 and vec_xstw4.
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// XLC compilers for POWER8 and above use vec_xl and vec_xst. The way to tell
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// the difference is, POWER7 XLC compilers are version 12.x and earlier.
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// The open question is, how to handle early Clang compilers for POWER7.
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// We know the latest Clang compilers support vec_xl and vec_xst.
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#if defined(__xlc__) && (__xlc__ < 0x0d00)
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# define __old_xlc__ 1
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#endif
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#if defined(__xlC__) && (__xlC__ < 0x0d00)
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# define __old_xlC__ 1
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#endif
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int main(int argc, char* argv[])
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{
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__vector unsigned char x;
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unsigned char res[16];
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#if defined(__old_xlc__) || defined(__old_xlC__)
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x=vec_xlw4(0, (unsigned char*)argv[0]);
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x=vec_add(x,x);
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vec_xstw4(x, 0, res);
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#elif defined(__xlc__) || defined(__xlC__) || defined(__clang__)
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x=vec_xl(0, (unsigned char*)argv[0]);
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x=vec_add(x,x);
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vec_xst(x, 0, res);
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#elif defined(__GNUC__)
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x=vec_vsx_ld(0, (unsigned char*)argv[0]);
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x=vec_add(x,x);
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vec_vsx_st(x, 0, res);
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#else
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int XXX[-1];
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#endif
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return 0;
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}
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