[Bug middle-end/31796] New: Evaluate remquo/remainder/drem at compile-time

[Bug middle-end/31796] New: Evaluate remquo/remainder/drem at compile-time

[ghazi at gcc dot gnu dot org]

GCC should use MPFR to evaluate builtins remquo, remainder (and the common
extension function drem) at compile-time when they are provided with constant
arguments.  The forthcoming mpfr-2.3.0 has suitable functionality to do this.


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           Summary: Evaluate remquo/remainder/drem at compile-time
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: middle-end
        AssignedTo: ghazi at gcc dot gnu dot org
        ReportedBy: ghazi at gcc dot gnu dot org
 BugsThisDependsOn: 29335


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31796

[Bug middle-end/31796] Evaluate remquo/remainder/drem at compile-time

[ghazi at gcc dot gnu dot org]

------- Comment #1 from ghazi at gcc dot gnu dot org  2007-05-05 18:57 -------
Patch posted here:

http://gcc.gnu.org/ml/gcc-patches/2007-05/msg00297.html


-- 

ghazi at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |http://gcc.gnu.org/ml/gcc-
                   |                            |patches/2007-
                   |                            |05/msg00297.html


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31796

[Bug middle-end/31796] Evaluate remquo/remainder/drem at compile-time

[patchapp at dberlin dot org]

------- Comment #2 from patchapp at dberlin dot org  2007-05-05 19:45 -------
Subject: Bug number PR middle-end/31796

A patch for this bug has been added to the patch tracker.
The mailing list url for the patch is
http://gcc.gnu.org/ml/gcc-patches/2007-05/msg00297.html


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31796

[Bug middle-end/31796] Evaluate remquo/remainder/drem at compile-time

[ghazi at gcc dot gnu dot org]

------- Comment #3 from ghazi at gcc dot gnu dot org  2007-05-18 02:31 -------
Subject: Bug 31796

Author: ghazi
Date: Fri May 18 01:31:20 2007
New Revision: 124820

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=124820
Log:
        PR middle-end/31796
        * builtins.c (do_mpfr_remquo): New.
        (fold_builtin_2): Handle BUILT_IN_DREM/BUILT_IN_REMAINDER.
        (fold_builtin_3): Handle BUILT_IN_REMQUO.

testsuite:
        * gcc.dg/torture/builtin-math-2.c: Add tests for remquo, remainder
        and drem.
        * gcc.dg/torture/builtin-math-4.c: Likewise.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/builtins.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/torture/builtin-math-2.c
    trunk/gcc/testsuite/gcc.dg/torture/builtin-math-4.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31796

[Bug middle-end/31796] Evaluate remquo/remainder/drem at compile-time

[ghazi at gcc dot gnu dot org]

------- Comment #4 from ghazi at gcc dot gnu dot org  2007-05-19 05:14 -------
Functionality installed on trunk.


-- 

ghazi at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.3.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31796