| /* { dg-do run } */ |
| /* { dg-require-effective-target fma4 } */ |
| /* { dg-options "-O2 -mfma4" } */ |
| |
| #include "fma4-check.h" |
| |
| #include <x86intrin.h> |
| #include <string.h> |
| |
| #define NUM 20 |
| |
| union |
| { |
| __m256 x[NUM]; |
| float f[NUM * 8]; |
| __m256d y[NUM]; |
| double d[NUM * 4]; |
| } dst, res, src1, src2, src3; |
| |
| /* Note that in macc*,msub*,mnmacc* and mnsub* instructions, the intermdediate |
| product is not rounded, only the addition is rounded. */ |
| |
| static void |
| init_nmaccps () |
| { |
| int i; |
| for (i = 0; i < NUM * 8; i++) |
| { |
| src1.f[i] = i; |
| src2.f[i] = i + 10; |
| src3.f[i] = i + 20; |
| } |
| } |
| |
| static void |
| init_nmaccpd () |
| { |
| int i; |
| for (i = 0; i < NUM * 4; i++) |
| { |
| src1.d[i] = i; |
| src2.d[i] = i + 10; |
| src3.d[i] = i + 20; |
| } |
| } |
| |
| static int |
| check_nmaccps () |
| { |
| int i, j, check_fails = 0; |
| for (i = 0; i < NUM * 8; i = i + 8) |
| for (j = 0; j < 8; j++) |
| { |
| res.f[i + j] = - (src1.f[i + j] * src2.f[i + j]) + src3.f[i + j]; |
| if (dst.f[i + j] != res.f[i + j]) |
| check_fails++; |
| } |
| return check_fails; |
| } |
| |
| static int |
| check_nmaccpd () |
| { |
| int i, j, check_fails = 0; |
| for (i = 0; i < NUM * 4; i = i + 4) |
| for (j = 0; j < 4; j++) |
| { |
| res.d[i + j] = - (src1.d[i + j] * src2.d[i + j]) + src3.d[i + j]; |
| if (dst.d[i + j] != res.d[i + j]) |
| check_fails++; |
| } |
| return check_fails; |
| } |
| |
| static void |
| fma4_test (void) |
| { |
| int i; |
| |
| init_nmaccps (); |
| |
| for (i = 0; i < NUM; i++) |
| dst.x[i] = _mm256_nmacc_ps (src1.x[i], src2.x[i], src3.x[i]); |
| |
| if (check_nmaccps ()) |
| abort (); |
| |
| init_nmaccpd (); |
| |
| for (i = 0; i < NUM; i++) |
| dst.y[i] = _mm256_nmacc_pd (src1.y[i], src2.y[i], src3.y[i]); |
| |
| if (check_nmaccpd ()) |
| abort (); |
| } |
