Viewing file:  vsx-store-element-truncate-int.c (3.85 KB) -rw-r--r--
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/*
Test of vec_xst_trunc (truncate and store rightmost vector element) */
/* { dg-do run { target power10_hw } } */
/* { dg-do compile { target { ! power10_hw } } } */
/* { dg-require-effective-target power10_ok } */
/* { dg-require-effective-target int128 } */
/* Deliberately set optization to zero for this test to confirm
the stxvr*x instruction is generated. At higher optimization levels
the instruction we are looking for is sometimes replaced by other
store instructions. */
/* { dg-options "-mdejagnu-cpu=power10 -O0 -save-temps" } */
/* { dg-final { scan-assembler-times {\mstxvrwx\M} 2 } } */
/* { dg-final { scan-assembler-times {\mstwx\M} 0 } } */
#include <altivec.h>
#include <stdio.h>
#include <inttypes.h>
#include <string.h>
#include <stdlib.h>
vector signed __int128 store_this_s[4] = {
{ (__int128) 0x7000000000000000 << 64 | (__int128) 0x123456789abcdef8ULL},
{ (__int128) 0x8000000000000000 << 64 | (__int128) 0xfedcba9876543217ULL},
{ (__int128) 0x1000000000000000 << 64 | (__int128) 0xccccccccccccccccULL},
{ (__int128) 0xf000000000000000 << 64 | (__int128) 0xaaaaaaaaaaaaaaaaULL}
};
vector unsigned __int128 store_this_us[4] = {
{ (unsigned __int128) 0x7000000000000000 << 64 | (unsigned __int128) 0x123456789abcdef8ULL},
{ (unsigned __int128) 0x8000000000000000 << 64 | (unsigned __int128) 0xfedcba9876543217ULL},
{ (unsigned __int128) 0x1000000000000000 << 64 | (unsigned __int128) 0xeeeeeeeeeeeeeeeeULL},
{ (unsigned __int128) 0xf000000000000000 << 64 | (unsigned __int128) 0x5555555555555555ULL}
};
#define NUM_VEC_ELEMS 4
vector signed int signed_expected[4] = {
{0x9abcdef8, 0x0 , 0x0 , 0x0 },
{0x0 , 0x76543217, 0x0 , 0x0 },
{0x0 , 0x0 , 0xcccccccc, 0x0 },
{0x0 , 0x0 , 0x0 , 0xaaaaaaaa },
};
vector unsigned int unsigned_expected[4] = {
{0x9abcdef8, 0x0 , 0x0 , 0x0 },
{0x0 , 0x76543217, 0x0 , 0x0 },
{0x0 , 0x0 , 0xeeeeeeee, 0x0 },
{0x0 , 0x0 , 0x0 , 0x55555555 },
};
unsigned long long rawbuffer[32];
signed int * vsbuffer = (int *)rawbuffer;
unsigned int * vubuffer = (unsigned int *)rawbuffer;
void reset_buffer() {
memset (&rawbuffer,0,sizeof(rawbuffer));
}
#define PRINT_VEC(V) \
for (int j=0;j<NUM_VEC_ELEMS;j++) { printf ("(0x%lx) ", V[j] ); }
void test_signed_store(vector signed __int128 myvec, int offset, signed int * store_data ) {
vec_xst_trunc (myvec, offset, store_data);
}
void test_unsigned_store(vector unsigned __int128 myvec, int offset, unsigned int * store_data ) {
vec_xst_trunc (myvec, offset, store_data);
}
int main (int argc, char *argv [])
{
int i;
int memcmpresult;
int mismatch=0;
int verbose=0;
#if VERBOSE
verbose=1;
printf("%s %s\n", __DATE__, __TIME__);
#endif
if (verbose) {
printf("expected results from signed tests:\n");
for (i = 0; i < 4 ; i++ ) {
PRINT_VEC(signed_expected[i]);
printf("\n");
}
}
for (i = 0; i < 4 ; i++ ) {
reset_buffer();
test_signed_store (store_this_s[i], 4*i, vsbuffer);
memcmpresult = memcmp(rawbuffer,&signed_expected[i],sizeof(vector int));
if (memcmpresult) {
printf("mismatch signed buffer, i %d (memcmpresult:%d) \n",i,memcmpresult);
mismatch++;
if (verbose) {
printf("results: ");
PRINT_VEC(vsbuffer);
printf("\n");
}
}
}
for (i = 0; i < 4 ; i++ ) {
reset_buffer();
test_unsigned_store (store_this_us[i], 4*i, vubuffer);
memcmpresult = memcmp(rawbuffer,&unsigned_expected[i],sizeof(vector int));
if (memcmpresult) {
printf("mismatch unsigned buffer, i %d (memcmpresult:%d) \n",i,memcmpresult);
mismatch++;
if (verbose) {
printf("results :");
PRINT_VEC(vubuffer);
printf("\n");
}
}
}
if (mismatch) {
printf("%d mismatches. \n",mismatch);
abort();
}
return 0;
}
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