[Bug ada/36575] New: [4.3/4.4 Regression][Ada] ACATS c460011 runtime fails at -O3

[Bug ada/36575] New: [4.3/4.4 Regression][Ada] ACATS c460011 runtime fails at -O3

[laurent at guerby dot net]

When compiled with 4.2.4 at -O3 -gnato cg460011 passes:

,.,. C460011 ACATS 2.5 08-06-19 08:49:17
---- C460011 Check that conversion to a modular type raises
                Constraint_Error when the operand value is outside the
                base range of the modular type.
==== C460011 PASSED ============================.

Whereas when compiled at -O3 -gnato on 4.3.1 and 4.4 20080618 it fails:

,.,. C460011 ACATS 2.5 08-06-19 08:49:17
---- C460011 Check that conversion to a modular type raises
                Constraint_Error when the operand value is outside the
                base range of the modular type.
==== C460011 PASSED ============================.

To reproduce:

$ gnatchop ../../trunk/gcc/testsuite/ada/acats/support/rep*
../../trunk/gcc/testsuite/ada/acats/tests/c4/c460011.a
$ gnatmake -O3 -gnato c460011.adb
$ ./c460011


-- 
           Summary: [4.3/4.4 Regression][Ada] ACATS c460011 runtime fails at
                    -O3
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: ada
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: laurent at guerby dot net
  GCC host triplet: x86_64-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36575

[Bug ada/36575] [4.3/4.4 Regression][Ada] ACATS c460011 runtime fails at -O3

[laurent at guerby dot net]

------- Comment #1 from laurent at guerby dot net  2008-06-19 06:54 -------
Ooops paster the wrong output, the FAILED message with 4.3.1/4.4 is:

,.,. C460011 ACATS 2.5 08-06-19 08:51:01
---- C460011 Check that conversion to a modular type raises
                Constraint_Error when the operand value is outside the
                base range of the modular type.
   * C460011 Halfway => Big, 3.
   * C460011 Halfway => Also_Big, 3.
   * C460011 Halfway => Also_Big, -3.
**** C460011 FAILED ****************************.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36575

[Bug ada/36575] [4.3/4.4 Regression][Ada] ACATS c460011 runtime fails at -O3

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2008-06-21 16:33 -------
I would bet this is VRP triggered by more inlining.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.3.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36575

[Bug ada/36575] [4.3/4.4 Regression][Ada] ACATS c460011 runtime fails at -O3

[jsm28 at gcc dot gnu dot org]

------- Comment #3 from jsm28 at gcc dot gnu dot org  2008-06-22 11:03 -------
Setting to P4 as an Ada bug, please restore to P3 if a C or C++ testcase is
found.


-- 

jsm28 at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36575

[Bug ada/36575] [4.3/4.4 Regression][Ada] ACATS c460011 runtime fails at -O3

[jsm28 at gcc dot gnu dot org]

------- Comment #4 from jsm28 at gcc dot gnu dot org  2008-08-27 22:04 -------
4.3.2 is released, changing milestones to 4.3.3.


-- 

jsm28 at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.3.2                       |4.3.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36575

[Bug ada/36575] [4.3/4.4 Regression] ACATS c460011 fails at -O3

[ebotcazou at gcc dot gnu dot org]

------- Comment #5 from ebotcazou at gcc dot gnu dot org  2008-09-26 08:43 -------
Reproducible on x86.


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   GCC host triplet|x86_64-linux                |
   Last reconfirmed|0000-00-00 00:00:00         |2008-09-26 08:43:19
               date|                            |
            Summary|[4.3/4.4 Regression][Ada]   |[4.3/4.4 Regression] ACATS
                   |ACATS c460011 runtime fails |c460011 fails at -O3
                   |at -O3                      |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36575

[Bug ada/36575] [4.3/4.4 Regression] ACATS c460011 fails at -O3

[ebotcazou at gcc dot gnu dot org]

------- Comment #6 from ebotcazou at gcc dot gnu dot org  2008-09-26 08:43 -------
Investigating.


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |ebotcazou at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2008-09-26 08:43:19         |2008-09-26 08:43:40
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36575

[Bug ada/36575] [4.3/4.4 Regression] ACATS c460011 fails at -O3

[ebotcazou at gcc dot gnu dot org]

------- Comment #7 from ebotcazou at gcc dot gnu dot org  2008-09-26 09:24 -------
> I would bet this is VRP triggered by more inlining.

It's constant-folding triggered by more inlining, this already fails at -O0:

procedure P is

  type Unsigned_Over_8 is mod 2**8+2;
  type Signed_Over_8 is range -200 .. 200;

  procedure Assert(Truth: Boolean) is
  begin
    if not Truth then
      raise Program_Error;
    end if;
  end;

  type Decim is delta 0.1 digits 5;

  Halfway  : Decim := 2.5;
  Neg_Half : Decim := -2.5;

  Big      : Unsigned_Over_8;
  Also_Big : Signed_Over_8;

begin
  Big := Unsigned_Over_8 (Halfway); -- Rounds up by 4.6(33).
  Assert(Big = 3);

  Also_Big := Signed_Over_8 (Halfway); -- Rounds up by 4.6(33).
  Assert(Also_Big = 3);

  Also_Big := Signed_Over_8 (Neg_Half); -- Rounds down by 4.6(33).
  Assert(Also_Big = -3);
end;


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36575

[Bug middle-end/36575] [4.3/4.4 Regression] ACATS c460011 fails at -O3

[ebotcazou at gcc dot gnu dot org]

------- Comment #8 from ebotcazou at gcc dot gnu dot org  2008-09-28 15:13 -------
Subject: Bug 36575

Author: ebotcazou
Date: Sun Sep 28 15:12:07 2008
New Revision: 140734

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=140734
Log:
        PR middle-end/36575
        * fold-const (div_and_round_double) <ROUND_DIV_EXPR>: Fix typo.

Added:
    trunk/gcc/testsuite/gnat.dg/conv_decimal.adb
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36575

[Bug middle-end/36575] [4.3/4.4 Regression] ACATS c460011 fails at -O3

[ebotcazou at gcc dot gnu dot org]

------- Comment #9 from ebotcazou at gcc dot gnu dot org  2008-09-28 15:15 -------
Subject: Bug 36575

Author: ebotcazou
Date: Sun Sep 28 15:13:52 2008
New Revision: 140735

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=140735
Log:
        PR middle-end/36575
        * fold-const (div_and_round_double) <ROUND_DIV_EXPR>: Fix typo.

Added:
    branches/gcc-4_3-branch/gcc/testsuite/gnat.dg/conv_decimal.adb
Modified:
    branches/gcc-4_3-branch/gcc/ChangeLog
    branches/gcc-4_3-branch/gcc/fold-const.c
    branches/gcc-4_3-branch/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36575

[Bug middle-end/36575] [4.3/4.4 Regression] ACATS c460011 fails at -O3

[ebotcazou at gcc dot gnu dot org]

------- Comment #10 from ebotcazou at gcc dot gnu dot org  2008-09-28 15:16 -------
Subject: Bug 36575

Author: ebotcazou
Date: Sun Sep 28 15:15:16 2008
New Revision: 140736

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=140736
Log:
        PR middle-end/36575
        * fold-const (div_and_round_double) <ROUND_DIV_EXPR>: Fix typo.

Added:
    branches/gcc-4_2-branch/gcc/testsuite/gnat.dg/conv_decimal.adb
Modified:
    branches/gcc-4_2-branch/gcc/ChangeLog
    branches/gcc-4_2-branch/gcc/fold-const.c
    branches/gcc-4_2-branch/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36575

[Bug middle-end/36575] [4.3/4.4 Regression] ACATS c460011 fails at -O3

[ebotcazou at gcc dot gnu dot org]

------- Comment #11 from ebotcazou at gcc dot gnu dot org  2008-09-28 15:20 -------
Thanks for reporting the problem.


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36575