On Mon, Oct 25, 2021 at 10:26 AM Hongtao Liu <crazy...@gmail.com> wrote:
>
> On Mon, Oct 25, 2021 at 1:59 PM liuhongt <hongtao....@intel.com> wrote:
> >
> > Similar for sqrt/sqrtl.
> >
>   Bootstrapped and regtested on x86_64-pc-linux-gnu{-m32,}
>   Ok for trunk?

OK.

> > gcc/ChangeLog:
> >
> >         PR target/102464
> >         * match.pd: Simplify (_Float16) sqrtf((float) a) to .SQRT(a)
> >         when direct_internal_fn_supported_p, similar for sqrt/sqrtl.
> >
> > gcc/testsuite/ChangeLog:
> >
> >         PR target/102464
> >         * gcc.target/i386/pr102464-sqrtph.c: New test.
> >         * gcc.target/i386/pr102464-sqrtsh.c: New test.
> > ---
> >  gcc/match.pd                                  |  6 +++--
> >  .../gcc.target/i386/pr102464-sqrtph.c         | 27 +++++++++++++++++++
> >  .../gcc.target/i386/pr102464-sqrtsh.c         | 23 ++++++++++++++++
> >  3 files changed, 54 insertions(+), 2 deletions(-)
> >  create mode 100644 gcc/testsuite/gcc.target/i386/pr102464-sqrtph.c
> >  create mode 100644 gcc/testsuite/gcc.target/i386/pr102464-sqrtsh.c
> >
> > diff --git a/gcc/match.pd b/gcc/match.pd
> > index 5bed2e12715..43d1c1bc0bd 100644
> > --- a/gcc/match.pd
> > +++ b/gcc/match.pd
> > @@ -6228,14 +6228,16 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT)
> >             BUILT_IN_ROUNDEVENL BUILT_IN_ROUNDEVEN BUILT_IN_ROUNDEVENF
> >             BUILT_IN_ROUNDL BUILT_IN_ROUND BUILT_IN_ROUNDF
> >             BUILT_IN_NEARBYINTL BUILT_IN_NEARBYINT BUILT_IN_NEARBYINTF
> > -           BUILT_IN_RINTL BUILT_IN_RINT BUILT_IN_RINTF)
> > +           BUILT_IN_RINTL BUILT_IN_RINT BUILT_IN_RINTF
> > +           BUILT_IN_SQRTL BUILT_IN_SQRT BUILT_IN_SQRTF)
> >       tos (IFN_TRUNC IFN_TRUNC IFN_TRUNC
> >           IFN_FLOOR IFN_FLOOR IFN_FLOOR
> >           IFN_CEIL IFN_CEIL IFN_CEIL
> >           IFN_ROUNDEVEN IFN_ROUNDEVEN IFN_ROUNDEVEN
> >           IFN_ROUND IFN_ROUND IFN_ROUND
> >           IFN_NEARBYINT IFN_NEARBYINT IFN_NEARBYINT
> > -         IFN_RINT IFN_RINT IFN_RINT)
> > +         IFN_RINT IFN_RINT IFN_RINT
> > +         IFN_SQRT IFN_SQRT IFN_SQRT)
> >   /* (_Float16) round ((doube) x) -> __built_in_roundf16 (x), etc.,
> >      if x is a _Float16.  */
> >   (simplify
> > diff --git a/gcc/testsuite/gcc.target/i386/pr102464-sqrtph.c 
> > b/gcc/testsuite/gcc.target/i386/pr102464-sqrtph.c
> > new file mode 100644
> > index 00000000000..8bd19c6e65e
> > --- /dev/null
> > +++ b/gcc/testsuite/gcc.target/i386/pr102464-sqrtph.c
> > @@ -0,0 +1,27 @@
> > +/* PR target/102464.  */
> > +/* { dg-do compile } */
> > +/* { dg-options "-O2 -mavx512fp16 -mavx512vl -ffast-math -ftree-vectorize" 
> > } */
> > +
> > +#include<math.h>
> > +void foo1 (_Float16* __restrict a, _Float16* b)
> > +{
> > +  for (int i = 0; i != 8; i++)
> > +    a[i] =  sqrtf (b[i]);
> > +}
> > +
> > +void foo2 (_Float16* __restrict a, _Float16* b)
> > +{
> > +  for (int i = 0; i != 8; i++)
> > +    a[i] =  sqrt (b[i]);
> > +}
> > +
> > +void foo3 (_Float16* __restrict a, _Float16* b)
> > +{
> > +  for (int i = 0; i != 8; i++)
> > +    a[i] =  sqrtl (b[i]);
> > +}
> > +
> > +/* { dg-final { scan-assembler-not "vcvtsh2s\[sd\]" } } */
> > +/* { dg-final { scan-assembler-not "vcvtph2p\[sd\]" } } */
> > +/* { dg-final { scan-assembler-not "extendhfxf" } } */
> > +/* { dg-final { scan-assembler-times "vsqrtph\[^\n\r\]*xmm\[0-9\]" 3 } } */
> > diff --git a/gcc/testsuite/gcc.target/i386/pr102464-sqrtsh.c 
> > b/gcc/testsuite/gcc.target/i386/pr102464-sqrtsh.c
> > new file mode 100644
> > index 00000000000..4cf0089a67f
> > --- /dev/null
> > +++ b/gcc/testsuite/gcc.target/i386/pr102464-sqrtsh.c
> > @@ -0,0 +1,23 @@
> > +/* PR target/102464.  */
> > +/* { dg-do compile } */
> > +/* { dg-options "-O2 -mavx512fp16 -ffast-math" } */
> > +
> > +#include<math.h>
> > +_Float16 foo1 (_Float16 a)
> > +{
> > +  return sqrtf (a);
> > +}
> > +
> > +_Float16 foo2 (_Float16 a)
> > +{
> > +  return sqrt (a);
> > +}
> > +
> > +_Float16 foo3 (_Float16 a)
> > +{
> > +  return sqrtl (a);
> > +}
> > +
> > +/* { dg-final { scan-assembler-not "vcvtsh2s\[sd\]" } } */
> > +/* { dg-final { scan-assembler-not "extendhfxf" } } */
> > +/* { dg-final { scan-assembler-times "vsqrtsh\[^\n\r\]*xmm\[0-9\]" 3 } } */
> > --
> > 2.18.1
> >
>
>
> --
> BR,
> Hongtao

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