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* [Bug testsuite/55186] New: gcc.dg/const-uniq-1.c fails due to vector expected but not being in the constant pool @ 2012-11-03 4:42 hp at gcc dot gnu.org 2012-11-03 4:43 ` [Bug testsuite/55186] " hp at gcc dot gnu.org ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: hp at gcc dot gnu.org @ 2012-11-03 4:42 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55186 Bug #: 55186 Summary: gcc.dg/const-uniq-1.c fails due to vector expected but not being in the constant pool Classification: Unclassified Product: gcc Version: 4.7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: testsuite AssignedTo: unassigned@gcc.gnu.org ReportedBy: hp@gcc.gnu.org Target: cris-axis-elf Created attachment 28601 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28601 const-uniq-1.c.004t.gimple While technically this is a regression, the reason for the brief PASS period is likely related to a temporary severe bug in the source tree rather than the more common sequence: a conscious change foiled by a later bug. This is a rare event! This test previously failed, started passing somewhere in the (]-range 193059:193061 (likely due to the bug in r193061) and started failing again somewhere in the (]-range 193063:193070 (likely due to the bugfix in r193064). At r193109, the const-uniq-1.c.004t.gimple dump is as attached: no label present for the expected constant-pool entry. The assembly output for the vector initializations are piecewise, one for each element: moveq 1,$r9 move.d $r9,[$sp+4] The test assumes a single vector in the constant pool supposedly used with some memcpy-equivalent (call or in-line expansion). At first glance, the piecewise initialization might seem suboptimal, but a memcpy call would *not* be better for -Os for this target, when counting the constant vector (well, twice). Piecewise initialization would be optimal - if the storing instructions use post-increment instead of indexing, as expected by the specified relevant target macros. (N.B.: poor autoincdec generation is a long-standing flaw in gcc covered by PRs elsewhere). Constant-pool vectors and memcpy are optimal for e.g. vectors four times as large; will propose such a patch for this test-case. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug testsuite/55186] gcc.dg/const-uniq-1.c fails due to vector expected but not being in the constant pool 2012-11-03 4:42 [Bug testsuite/55186] New: gcc.dg/const-uniq-1.c fails due to vector expected but not being in the constant pool hp at gcc dot gnu.org @ 2012-11-03 4:43 ` hp at gcc dot gnu.org 2012-11-05 22:17 ` hp at gcc dot gnu.org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: hp at gcc dot gnu.org @ 2012-11-03 4:43 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55186 Hans-Peter Nilsson <hp at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |ASSIGNED Last reconfirmed| |2012-11-03 AssignedTo|unassigned at gcc dot |hp at gcc dot gnu.org |gnu.org | Ever Confirmed|0 |1 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug testsuite/55186] gcc.dg/const-uniq-1.c fails due to vector expected but not being in the constant pool 2012-11-03 4:42 [Bug testsuite/55186] New: gcc.dg/const-uniq-1.c fails due to vector expected but not being in the constant pool hp at gcc dot gnu.org 2012-11-03 4:43 ` [Bug testsuite/55186] " hp at gcc dot gnu.org @ 2012-11-05 22:17 ` hp at gcc dot gnu.org 2012-11-06 5:16 ` hp at gcc dot gnu.org 2012-11-06 5:16 ` hp at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: hp at gcc dot gnu.org @ 2012-11-05 22:17 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55186 --- Comment #1 from Hans-Peter Nilsson <hp at gcc dot gnu.org> 2012-11-05 22:17:18 UTC --- Author: hp Date: Mon Nov 5 22:17:14 2012 New Revision: 193194 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=193194 Log: PR testsuite/55186 * gcc.dg/const-uniq-1.c (a): Increase length four times. Modified: trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gcc.dg/const-uniq-1.c ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug testsuite/55186] gcc.dg/const-uniq-1.c fails due to vector expected but not being in the constant pool 2012-11-03 4:42 [Bug testsuite/55186] New: gcc.dg/const-uniq-1.c fails due to vector expected but not being in the constant pool hp at gcc dot gnu.org 2012-11-03 4:43 ` [Bug testsuite/55186] " hp at gcc dot gnu.org 2012-11-05 22:17 ` hp at gcc dot gnu.org @ 2012-11-06 5:16 ` hp at gcc dot gnu.org 2012-11-06 5:16 ` hp at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: hp at gcc dot gnu.org @ 2012-11-06 5:16 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55186 Hans-Peter Nilsson <hp at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED --- Comment #2 from Hans-Peter Nilsson <hp at gcc dot gnu.org> 2012-11-06 05:15:46 UTC --- . ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug testsuite/55186] gcc.dg/const-uniq-1.c fails due to vector expected but not being in the constant pool 2012-11-03 4:42 [Bug testsuite/55186] New: gcc.dg/const-uniq-1.c fails due to vector expected but not being in the constant pool hp at gcc dot gnu.org ` (2 preceding siblings ...) 2012-11-06 5:16 ` hp at gcc dot gnu.org @ 2012-11-06 5:16 ` hp at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: hp at gcc dot gnu.org @ 2012-11-06 5:16 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55186 Hans-Peter Nilsson <hp at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |4.8.0 ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2012-11-06 5:16 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2012-11-03 4:42 [Bug testsuite/55186] New: gcc.dg/const-uniq-1.c fails due to vector expected but not being in the constant pool hp at gcc dot gnu.org 2012-11-03 4:43 ` [Bug testsuite/55186] " hp at gcc dot gnu.org 2012-11-05 22:17 ` hp at gcc dot gnu.org 2012-11-06 5:16 ` hp at gcc dot gnu.org 2012-11-06 5:16 ` hp at gcc dot gnu.org
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