diff options
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/config/i386/i386.c | 15 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/avx512er-vrcp28ps-3.c | 50 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/avx512er-vrcp28ps-4.c | 6 |
5 files changed, 78 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 26e8057db25..dacf8c16fe9 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2016-06-21 Ilya Verbin <ilya.verbin@intel.com> + + * config/i386/i386.c (ix86_emit_swdivsf): Emit vrcp28ps. + 2016-06-21 H.J. Lu <hongjiu.lu@intel.com> Ilya Enkovich <ilya.enkovich@intel.com> diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index 17664ff9f17..8139807512b 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -48726,8 +48726,19 @@ void ix86_emit_swdivsf (rtx res, rtx a, rtx b, machine_mode mode) /* x0 = rcp(b) estimate */ if (mode == V16SFmode || mode == V8DFmode) - emit_insn (gen_rtx_SET (x0, gen_rtx_UNSPEC (mode, gen_rtvec (1, b), - UNSPEC_RCP14))); + { + if (TARGET_AVX512ER) + { + emit_insn (gen_rtx_SET (x0, gen_rtx_UNSPEC (mode, gen_rtvec (1, b), + UNSPEC_RCP28))); + /* res = a * x0 */ + emit_insn (gen_rtx_SET (res, gen_rtx_MULT (mode, a, x0))); + return; + } + else + emit_insn (gen_rtx_SET (x0, gen_rtx_UNSPEC (mode, gen_rtvec (1, b), + UNSPEC_RCP14))); + } else emit_insn (gen_rtx_SET (x0, gen_rtx_UNSPEC (mode, gen_rtvec (1, b), UNSPEC_RCP))); diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index cfee40b7572..cff25cc1979 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2016-06-21 Ilya Verbin <ilya.verbin@intel.com> + + * gcc.target/i386/avx512er-vrcp28ps-3.c: New test. + * gcc.target/i386/avx512er-vrcp28ps-4.c: New test. + 2016-06-21 H.J. Lu <hongjiu.lu@intel.com> PR target/71549 diff --git a/gcc/testsuite/gcc.target/i386/avx512er-vrcp28ps-3.c b/gcc/testsuite/gcc.target/i386/avx512er-vrcp28ps-3.c new file mode 100644 index 00000000000..e08bea41c3e --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/avx512er-vrcp28ps-3.c @@ -0,0 +1,50 @@ +/* { dg-do run } */ +/* { dg-require-effective-target avx512er } */ +/* { dg-options "-O2 -ffast-math -ftree-vectorize -mavx512er" } */ + +#include "avx512er-check.h" + +#define MAX 1000 +#define EPS 0.00001 + +__attribute__ ((noinline, optimize (0))) +void static +compute_rcp_ref (float *a, float *b, float *r) +{ + for (int i = 0; i < MAX; i++) + r[i] = a[i] / b[i]; +} + +__attribute__ ((noinline)) +void static +compute_rcp_exp (float *a, float *b, float *r) +{ + for (int i = 0; i < MAX; i++) + r[i] = a[i] / b[i]; +} + +void static +avx512er_test (void) +{ + float a[MAX]; + float b[MAX]; + float ref[MAX]; + float exp[MAX]; + + for (int i = 0; i < MAX; i++) + { + a[i] = 179.345 - 6.5645 * i; + b[i] = 8765.987 - 8.6756 * i; + } + + compute_rcp_ref (a, b, ref); + compute_rcp_exp (a, b, exp); + + for (int i = 0; i < MAX; i++) + { + float rel_err = (ref[i] - exp[i]) / ref[i]; + rel_err = rel_err > 0.0 ? rel_err : -rel_err; + if (rel_err > EPS) + abort (); + } +} diff --git a/gcc/testsuite/gcc.target/i386/avx512er-vrcp28ps-4.c b/gcc/testsuite/gcc.target/i386/avx512er-vrcp28ps-4.c new file mode 100644 index 00000000000..2c76d967184 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/avx512er-vrcp28ps-4.c @@ -0,0 +1,6 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -ffast-math -ftree-vectorize -mavx512er" } */ + +#include "avx512er-vrcp28ps-3.c" + +/* { dg-final { scan-assembler-times "vrcp28ps\[^\n\r\]*zmm\[0-9\]+(?:\n|\[ \\t\]+#)" 1 } } */ |