[Bug inline-asm/94095] New: Modifier 'a' do not work as described

[Bug inline-asm/94095] New: Modifier 'a' do not work as described

[frederic.recoules@univ-grenoble-alpes.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94095

            Bug ID: 94095
           Summary: Modifier 'a' do not work as described
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Keywords: documentation
          Severity: normal
          Priority: P3
         Component: inline-asm
          Assignee: unassigned at gcc dot gnu.org
          Reporter: frederic.recoules@univ-grenoble-alpes.fr
  Target Milestone: ---

In https://gcc.gnu.org/onlinedocs/gcc/Extended-Asm.html 6.47.2.8, it is said
that 'a' "Print an absolute memory reference" (aka *%eax for 'att') but
experiments shows that it actually print '(%eax)'.

But yet, what is the intended behavior?
Is it actually valid to use 'a' modifier with 'p' constraint in

void *x = NULL;
__asm__ ("leal %a1, %0" : "=r" (x) : "p" (&x));

?

[Bug target/94095] Modifier 'a' do not work as described

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94095

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The problem is just 'a' in the first (Modifier) column is wrong, it should have
been 'A'.  I will commit the patch in a few minutes.  Operand column is correct
to use 'A'.

[Bug target/94095] Modifier 'a' do not work as described

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94095

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
   Target Milestone|---                         |10.0
             Status|UNCONFIRMED                 |RESOLVED

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Fixed for GCC 10.  If someone else wants to backport the patch (it is trival),
I am ok with it.

[Bug target/94095] Modifier 'a' do not work as described

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94095

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |marxin at gcc dot gnu.org

--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
commit r10-7092-ga931bb50fe77446058166b50eea4e53223ad7ef7
Author: Andrew Pinski <apinski@marvell.com>
Date:   Mon Mar 9 09:45:23 2020 -0700

    Fix 'A' operand modifier: PR inline-asm/94095

    The problem here is there was a typo in the documentation
    for the 'A' modifier in the table, it was recorded as 'a'
    in the table on the modifier column.

    Committed as obvious.

    2020-03-09  Andrew Pinski  <apinski@marvell.com>

            PR inline-asm/94095
            * doc/extend.texi (x86 Operand Modifiers): Fix column
            for 'A' modifier.

[Bug target/94095] Modifier 'a' do not work as described

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94095

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #3)
I did not notice the git to bugzilla comment connection was not working until
yesterday and then forgot to update this one.  THanks for doing it.