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From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/65136] [5 Regression] VRP inserts unnecessary constant copy in the loop
Date: Fri, 20 Feb 2015 18:20:00 -0000 [thread overview]
Message-ID: <bug-65136-4-j8A3Ld8twb@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-65136-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65136
--- Comment #6 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Richard Biener from comment #3)
> After the patch the assembly difference between 4.9 and 5 is
Hm, I don't see the difference with -O2, 4.9.3 vs. 5.0:
--- pr65136_493.s 2015-02-20 18:50:30.939970811 +0100
+++ pr65136_5.s 2015-02-20 18:50:36.860907527 +0100
@@ -31,5 +31,5 @@
.LCOLDE0:
.text
.LHOTE0:
- .ident "GCC: (GNU) 4.9.3 20150204 (prerelease) [gcc-4_9-branch
revision 220411]"
+ .ident "GCC: (GNU) 5.0.0 20150220 (experimental) [trunk revision
220876]"
.section .note.GNU-stack,"",@progbits
>From gcc-bugs-return-477987-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 20 18:06:04 2015
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From: "zbeekman at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/65144] New: Problems printing, reading and accessing substrings of ISO_10646 character variables
Date: Fri, 20 Feb 2015 18:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65144
Bug ID: 65144
Summary: Problems printing, reading and accessing substrings of
ISO_10646 character variables
Product: gcc
Version: 4.9.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: zbeekman at gmail dot com
Created attachment 34820
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34820&action=edit
reproducer program
This bug may be related to 65125,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65125 I’m not sure.
Basically it seems that 3 things are happening:
- Unicode strings aren’t being output correctly to to stdout, it seems only
the first few characters are output. This *could* be an issue related to what
gfortran thinks the encoding of the tty is. Further testing reveals that it
seems to output to a file opened with uff-8 encoding OK
- Unicode substrings retain the correct kind as long as they are not
parameters (see 65141 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65141) BUT
the resulting representation seems to be that of DEFAULT character kind. (i.e.
the characters change when a substring expression is used, characters 2-4 in
str(2:4) are different than characters 2-4 in str). This happens even when
writing to a file opened with uff-8 encoding.
>From gcc-bugs-return-477988-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 20 18:20:20 2015
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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/65109] [5 Regression] r220674 causes FAIL: gcc.target/powerpc/ppc64-abi-1.c execution test
Date: Fri, 20 Feb 2015 18:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?ide109
Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |law at redhat dot com
--- Comment #6 from Jeffrey A. Law <law at redhat dot com> ---
Martin,
Does the test pass if the schedulers are turned off? If so, turning off the
schedulers would be less invasive. Still leaves us with a bit of a fragile
test, but it's been like this for ~12 years or so. Revisiting it once every
dozen years isn't so bad.
next prev parent reply other threads:[~2015-02-20 17:52 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-20 9:56 [Bug tree-optimization/65136] New: " izamyatin at gmail dot com
2015-02-20 12:43 ` [Bug tree-optimization/65136] [5 Regression] " rguenth at gcc dot gnu.org
2015-02-20 17:03 ` rguenth at gcc dot gnu.org
2015-02-20 17:05 ` rguenth at gcc dot gnu.org
2015-02-20 18:20 ` ubizjak at gmail dot com [this message]
2015-02-23 10:00 ` rguenther at suse dot de
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