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* [Bug target/20117] New: [4.0.0 Regression] duplicated labels in PIC
@ 2005-02-21 18:23 kkojima at gcc dot gnu dot org
2005-02-21 18:45 ` [Bug target/20117] " kkojima at gcc dot gnu dot org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: kkojima at gcc dot gnu dot org @ 2005-02-21 18:23 UTC (permalink / raw)
To: gcc-bugs
4.0.0 generates duplicated labels on sh4-unknown-linux-gnu with -fPIC -O2
for the code below:
void bar (void);
int f(int i, int j)
{
static void *a[5] = {&&b,&&c,&&d,&&e,&&f};
if (i >=5) i = 0; if (i<=0)i=5;
goto *a[i];
e:
i++; if (i >=5) i = 0; if (i<=0)i=5;
j++;
goto *a[i];
f:
i--; if (i >=5) i = 0; if (i<=0)i=5;
j--;
goto *a[i];
b:
i+=2; if (i >=5) i = 0; if (i<=0)i=5;
goto *a[i];
c:
i*=2; if (i >=5) i = 0; if (i<=0)i=5;
bar ();
goto *a[i];
d:;
}
which is a slightly modified testcase in PR 15242. SH uses the unique
label for PIC call insn and it's noncopyable. duplicate_computed_gotos
which was introduced to solve PR 15242 copies the block including call
insn for bar and produces duplicated labels. I'm proposing a patch
http://gcc.gnu.org/ml/gcc-patches/2005-02/msg00924.html to avoid this.
--
Summary: [4.0.0 Regression] duplicated labels in PIC
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P2
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: kkojima at gcc dot gnu dot org
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: i686-pc-linux-gn
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: sh4-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20117
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug target/20117] [4.0.0 Regression] duplicated labels in PIC 2005-02-21 18:23 [Bug target/20117] New: [4.0.0 Regression] duplicated labels in PIC kkojima at gcc dot gnu dot org @ 2005-02-21 18:45 ` kkojima at gcc dot gnu dot org 2005-02-22 0:48 ` [Bug rtl-optimization/20117] [4.0 " pinskia at gcc dot gnu dot org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: kkojima at gcc dot gnu dot org @ 2005-02-21 18:45 UTC (permalink / raw) To: gcc-bugs -- What |Removed |Added ---------------------------------------------------------------------------- Known to fail| |4.0.0 Known to work| |3.4.4 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20117 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/20117] [4.0 Regression] duplicated labels in PIC 2005-02-21 18:23 [Bug target/20117] New: [4.0.0 Regression] duplicated labels in PIC kkojima at gcc dot gnu dot org 2005-02-21 18:45 ` [Bug target/20117] " kkojima at gcc dot gnu dot org @ 2005-02-22 0:48 ` pinskia at gcc dot gnu dot org 2005-02-25 16:20 ` cvs-commit at gcc dot gnu dot org 2005-02-25 17:04 ` pinskia at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu dot org @ 2005-02-22 0:48 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2005-02-21 21:38 ------- Confirmed. -- What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Component|target |rtl-optimization Ever Confirmed| |1 Keywords| |patch Last reconfirmed|0000-00-00 00:00:00 |2005-02-21 21:38:06 date| | Summary|[4.0.0 Regression] |[4.0 Regression] duplicated |duplicated labels in PIC |labels in PIC http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20117 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/20117] [4.0 Regression] duplicated labels in PIC 2005-02-21 18:23 [Bug target/20117] New: [4.0.0 Regression] duplicated labels in PIC kkojima at gcc dot gnu dot org 2005-02-21 18:45 ` [Bug target/20117] " kkojima at gcc dot gnu dot org 2005-02-22 0:48 ` [Bug rtl-optimization/20117] [4.0 " pinskia at gcc dot gnu dot org @ 2005-02-25 16:20 ` cvs-commit at gcc dot gnu dot org 2005-02-25 17:04 ` pinskia at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: cvs-commit at gcc dot gnu dot org @ 2005-02-25 16:20 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-02-25 07:13 ------- Subject: Bug 20117 CVSROOT: /cvs/gcc Module name: gcc Changes by: kkojima@gcc.gnu.org 2005-02-25 07:13:26 Modified files: gcc : ChangeLog bb-reorder.c Log message: PR rtl-optimization/20117 * bb-reorder.c (duplicate_computed_gotos): Don't duplicate the block including noncopyable insn. Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.7591&r2=2.7592 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/bb-reorder.c.diff?cvsroot=gcc&r1=1.91&r2=1.92 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20117 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/20117] [4.0 Regression] duplicated labels in PIC 2005-02-21 18:23 [Bug target/20117] New: [4.0.0 Regression] duplicated labels in PIC kkojima at gcc dot gnu dot org ` (2 preceding siblings ...) 2005-02-25 16:20 ` cvs-commit at gcc dot gnu dot org @ 2005-02-25 17:04 ` pinskia at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu dot org @ 2005-02-25 17:04 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2005-02-25 12:32 ------- Fixed in 4.0.0 (before the branch) so closing as fixed. -- What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |FIXED Target Milestone|--- |4.0.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20117 ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2005-02-25 12:33 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2005-02-21 18:23 [Bug target/20117] New: [4.0.0 Regression] duplicated labels in PIC kkojima at gcc dot gnu dot org 2005-02-21 18:45 ` [Bug target/20117] " kkojima at gcc dot gnu dot org 2005-02-22 0:48 ` [Bug rtl-optimization/20117] [4.0 " pinskia at gcc dot gnu dot org 2005-02-25 16:20 ` cvs-commit at gcc dot gnu dot org 2005-02-25 17:04 ` pinskia at gcc dot gnu dot org
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