Viewing file:  extra_vsx_asm.c (945 B) -rw-r--r--
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/**
* Testing ASM VSX register number fixer '%x<n>'
*
* old versions of CLANG doesn't support %x<n> in the inline asm template
* which fixes register number when using any of the register constraints wa, wd, wf.
*
* xref:
* - https://bugs.llvm.org/show_bug.cgi?id=31837
* - https://gcc.gnu.org/onlinedocs/gcc/Machine-Constraints.html
*/
#ifndef __VSX__
#error "VSX is not supported"
#endif
#include <altivec.h>
#if (defined(__GNUC__) && !defined(vec_xl)) || (defined(__clang__) && !defined(__IBMC__))
#define vsx_ld vec_vsx_ld
#define vsx_st vec_vsx_st
#else
#define vsx_ld vec_xl
#define vsx_st vec_xst
#endif
int main(void)
{
float z4[] = {0, 0, 0, 0};
signed int zout[] = {0, 0, 0, 0};
__vector float vz4 = vsx_ld(0, z4);
__vector signed int asm_ret = vsx_ld(0, zout);
__asm__ ("xvcvspsxws %x0,%x1" : "=wa" (vz4) : "wa" (asm_ret));
vsx_st(asm_ret, 0, zout);
return zout[0];
}
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