On Fri, 24 May 2019, Jakub Jelinek wrote:
> On Fri, May 17, 2019 at 12:04:16AM +0200, Jakub Jelinek wrote:
> > On Thu, May 16, 2019 at 11:39:38PM +0200, Jakub Jelinek wrote:
> > > One possibility is to add -fdump-tree-optimized and scan for
> > > /* { dg-final { scan-tree-dump "pow \\(\[^\n\r]*\\); \\\[tail call\\\]"
> > > "optimized" } } */
> > > resp.
> > > /* { dg-final { scan-tree-dump "log \\(\[^\n\r]*\\); \\\[tail call\\\]"
> > > "optimized" } } */
> >
> > Here it is in patch form.
> >
> > That said, I'm not convinced your patch does what you wanted, because
> > comparing a month old trunk with today's trunk generates the same assembly
> > except for .ident, generates as many [tail call] lines in *.optimized dump
> > as before, emits the same number of jmp\tpow and jmp\tlog instructions as
> > before (one in a separate routine).
> >
> > But at least the tests aren't UNSUPPORTED anymore.
> >
> > 2019-05-16 Jakub Jelinek <ja...@redhat.com>
> >
> > PR tree-optimization/90106
> > * gcc.dg/cdce1.c: Don't scan-assembler, instead -fdump-tree-optimized
> > and scan-tree-dump for tail call.
> > * gcc.dg/cdce2.c: Likewise.
>
> I'd like to ping this patch. A new cdce3.c testcase has been added in the
> mean time, so the above "That said," paragraph is resolved through that.
OK
> > --- gcc/testsuite/gcc.dg/cdce1.c.jj 2019-05-16 11:28:22.750177582 +0200
> > +++ gcc/testsuite/gcc.dg/cdce1.c 2019-05-16 23:50:23.618450891 +0200
> > @@ -1,9 +1,9 @@
> > -/* { dg-do run } */
> > -/* { dg-options "-O2 -fmath-errno -fdump-tree-cdce-details -lm" } */
> > +/* { dg-do run } */
> > +/* { dg-options "-O2 -fmath-errno -fdump-tree-cdce-details
> > -fdump-tree-optimized -lm" } */
> > /* { dg-require-effective-target int32plus } */
> > -/* { dg-final { scan-tree-dump "cdce1.c:17: .* function call is
> > shrink-wrapped into error conditions\." "cdce" } } */
> > -/* { dg-final { scan-assembler "jmp pow" } } */
> > /* { dg-require-effective-target large_double } */
> > +/* { dg-final { scan-tree-dump "cdce1.c:17: .* function call is
> > shrink-wrapped into error conditions\." "cdce" } } */
> > +/* { dg-final { scan-tree-dump "pow \\(\[^\n\r]*\\); \\\[tail call\\\]"
> > "optimized" } } */
> >
> > #include <stdlib.h>
> > #include <math.h>
> > --- gcc/testsuite/gcc.dg/cdce2.c.jj 2019-05-16 11:28:22.781177075 +0200
> > +++ gcc/testsuite/gcc.dg/cdce2.c 2019-05-16 23:50:58.505880845 +0200
> > @@ -1,8 +1,8 @@
> > -/* { dg-do run } */
> > +/* { dg-do run } */
> > /* { dg-skip-if "doubles are floats" { "avr-*-*" } } */
> > -/* { dg-options "-O2 -fmath-errno -fdump-tree-cdce-details -lm" } */
> > -/* { dg-final { scan-tree-dump "cdce2.c:16: .* function call is
> > shrink-wrapped into error conditions\." "cdce" } } */
> > -/* { dg-final { scan-assembler "jmp log" } } */
> > +/* { dg-options "-O2 -fmath-errno -fdump-tree-cdce-details
> > -fdump-tree-optimized -lm" } */
> > +/* { dg-final { scan-tree-dump "cdce2.c:16: .* function call is
> > shrink-wrapped into error conditions\." "cdce" } } */
> > +/* { dg-final { scan-tree-dump "log \\(\[^\n\r]*\\); \\\[tail call\\\]"
> > "optimized" } } */
> >
> > #include <stdlib.h>
> > #include <math.h>
> >
>
> Jakub
>
--
Richard Biener <rguent...@suse.de>
SUSE Linux GmbH, Maxfeldstrasse 5, 90409 Nuernberg, Germany;
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