diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.target/i386/avx2-vpmaddubsw-2.c')
-rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.target/i386/avx2-vpmaddubsw-2.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.target/i386/avx2-vpmaddubsw-2.c b/gcc-4.9/gcc/testsuite/gcc.target/i386/avx2-vpmaddubsw-2.c new file mode 100644 index 000000000..5761d8f44 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.target/i386/avx2-vpmaddubsw-2.c @@ -0,0 +1,59 @@ +/* { dg-do run } */ +/* { dg-options "-mavx2 -O2" } */ +/* { dg-require-effective-target avx2 } */ + +#include "avx2-check.h" +#include "ssse3-vals.h" + +static short +signed_saturate_to_word (int x) +{ + if (x > (int) 0x7fff) + return 0x7fff; + + if (x < (int) 0xffff8000) + return 0x8000; + + return (short) x; +} + +static void +compute_pmaddubsw256 (short *i1, short *i2, short *r) +{ + unsigned char *ub1 = (unsigned char *) i1; + char *sb2 = (char *) i2; + short *sout = (short *) r; + int t0; + int i; + + for (i = 0; i < 16; i++) + { + t0 = ((int) ub1[2 * i] * (int) sb2[2 * i] + + (int) ub1[2 * i + 1] * (int) sb2[2 * i + 1]); + sout[i] = signed_saturate_to_word (t0); + } +} + +static void +avx2_test (void) +{ + union256i_w s1, s2, res; + short res_ref[16]; + int i; + int fail = 0; + + for (i = 0; i < 256; i += 16) + { + s1.x = _mm256_loadu_si256 ((__m256i *) & vals[i]); + s2.x = _mm256_loadu_si256 ((__m256i *) & vals[i + 8]); + + res.x = _mm256_maddubs_epi16 (s1.x, s2.x); + + compute_pmaddubsw256 (s1.a, s2.a, res_ref); + + fail += check_union256i_w (res, res_ref); + } + + if (fail != 0) + abort (); +} |