[Bug rtl-optimization/25578] [4.2 Regression] gfortran version 4.2.0 20051227 - 144 new testsuite failures since 2005121
--- Comment #10 from uttamp at us dot ibm dot com 2006-01-04 16:52 --- *** Bug 25656 has been marked as a duplicate of this bug. *** -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25578
[Bug rtl-optimization/25578] [4.2 Regression] gfortran version 4.2.0 20051227 - 144 new testsuite failures since 2005121
--- Comment #9 from uttamp at us dot ibm dot com 2006-01-04 16:51 --- *** Bug 25657 has been marked as a duplicate of this bug. *** -- uttamp at us dot ibm dot com changed: What|Removed |Added CC||uttamp at us dot ibm dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25578
[Bug rtl-optimization/25578] [4.2 Regression] gfortran version 4.2.0 20051227 - 144 new testsuite failures since 2005121
--- Comment #8 from bonzini at gnu dot org 2006-01-03 14:58 --- patch committed -- bonzini at gnu dot org changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||FIXED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25578
[Bug rtl-optimization/25578] [4.2 Regression] gfortran version 4.2.0 20051227 - 144 new testsuite failures since 2005121
--- Comment #7 from bonzini at gnu dot org 2006-01-03 14:58 --- Subject: Bug 25578 Author: bonzini Date: Tue Jan 3 14:58:05 2006 New Revision: 109281 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=109281 Log: gcc: 2006-01-03 Paolo Bonzini <[EMAIL PROTECTED]> PR rtl-optimization/25578 * combine.c (combine_simplify_rtx, force_to_mode): Don't pass a parameter to simplify_shift_const if changing ASHIFTRT to LSHIFTRT. gcc/testsuite: 2006-01-03 Paolo Bonzini <[EMAIL PROTECTED]> PR rtl-optimization/25578 * gcc.c-torture/execute/20060102-1.c: New testcase. Added: trunk/gcc/testsuite/gcc.c-torture/execute/20060102-1.c Modified: trunk/gcc/ChangeLog trunk/gcc/combine.c trunk/gcc/testsuite/ChangeLog -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25578
[Bug rtl-optimization/25578] [4.2 Regression] gfortran version 4.2.0 20051227 - 144 new testsuite failures since 2005121
--- Comment #6 from pinskia at gcc dot gnu dot org 2005-12-30 05:45 ---
(In reply to comment #5)
> int f(int x)
> {
> return x >> 31 ? -1 : 1;
> }
And we are missing an optimization here.
Right now (well before this patch) we optimization it as:
(- (((unsigned)x)>>31))|1
we we can optimize it as:
(x>>31)|1
I will file a bug about this.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25578
[Bug rtl-optimization/25578] [4.2 Regression] gfortran version 4.2.0 20051227 - 144 new testsuite failures since 2005121
--- Comment #5 from bonzini at gnu dot org 2005-12-29 07:53 ---
I had an obvious fix yesterday but I had no time to bootstrap/regtest it. So
if possible please don't revert...
The reduced C testcase is
int f(int x)
{
return x >> 31 ? -1 : 1;
}
The MPFR_SIGN macro (invoked via mpfr_set) is miscompiled.
Paolo
--
bonzini at gnu dot org changed:
What|Removed |Added
AssignedTo|unassigned at gcc dot gnu |bonzini at gnu dot org
|dot org |
Status|NEW |ASSIGNED
Last reconfirmed|2005-12-27 21:13:33 |2005-12-29 07:53:52
date||
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25578
[Bug rtl-optimization/25578] [4.2 Regression] gfortran version 4.2.0 20051227 - 144 new testsuite failures since 2005121
--- Comment #4 from bonzini at gnu dot org 2005-12-28 15:46 --- I will be able to fix this at the beginning of January. If anybody wants to revert my combine.c patch before that, go ahead. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25578
[Bug rtl-optimization/25578] [4.2 Regression] gfortran version 4.2.0 20051227 - 144 new testsuite failures since 2005121
--- Comment #3 from dir at lanl dot gov 2005-12-27 21:46 --- This was after a complete new download and rebuild. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25578
[Bug rtl-optimization/25578] [4.2 Regression] gfortran version 4.2.0 20051227 - 144 new testsuite failures since 2005121
--- Comment #2 from pinskia at gcc dot gnu dot org 2005-12-27 21:13 --- See http://gcc.gnu.org/ml/gcc-patches/2005-12/msg01828.html This is not a fortran front-end issue but a miscompiling of the fortran front-end. -- pinskia at gcc dot gnu dot org changed: What|Removed |Added CC||bonzini at gnu dot org Severity|normal |blocker Status|UNCONFIRMED |NEW Component|fortran |rtl-optimization Ever Confirmed|0 |1 GCC build triplet||powerpc-*-* GCC host triplet|powerpc-apple-darwin8.3.0 |powerpc-*-* GCC target triplet||powerpc-*-* Keywords||wrong-code Last reconfirmed|-00-00 00:00:00 |2005-12-27 21:13:33 date|| Summary|gfortran version 4.2.0 |[4.2 Regression] gfortran |20051227 - 144 new testsuite|version 4.2.0 20051227 - 144 |failures since 2005121 |new testsuite failures since ||2005121 Target Milestone|--- |4.2.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25578
