Hi,
all gfortran versions from 4.1.x thru 4.5 refuse to compile the
following program with -fdefault-real-8:
program gfcbug90
real :: t(2)
print *, etime (t)
end program gfcbug90
% gfc4x gfcbug90.f90 -fdefault-real-8
gfcbug90.f90:3.18:
print *, etime (t)
1
Error: 'x'
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ramana at gcc dot gnu dot org changed:
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--- Comment #2 from ramana at gcc dot gnu dot org 2009-10-15 07:57 ---
(In reply to comment #0)
Compile the attached source code with options -Os -march=armv5te -mthumb, gcc
generates:
push{lr}
ldr r3, [r0]
cmp r3, #0 // B
--- Comment #1 from dominiq at lps dot ens dot fr 2009-10-15 07:59 ---
The manual reads:
VALUES The type shall be REAL, DIMENSION(2).
where I understand REAL as REAL(4). Hence if you want to use -fdefault-real-8,
you have to avoid the promotion of the ETIME argument by using
--- Comment #2 from carrot at google dot com 2009-10-15 08:18 ---
arm_size_rtx_costs calls thumb1_rtx_costs for TARGET_THUMB1.
thumb1_rtx_costs is also called by several other functions. Looked at its
implementation briefly, it is actually tuned for speed only. Following are some
--- Comment #6 from ramana at gcc dot gnu dot org 2009-10-15 08:19 ---
(In reply to comment #5)
Committed since approved in
http://gcc.gnu.org/ml/gcc-patches/2009-10/msg00906.html
This needs to be backported to 4.4 branch after the 4.4.2 release because the
original bug report came
--- Comment #3 from carrot at google dot com 2009-10-15 08:25 ---
Target ARM has conditional execution capability, but thumb actually can't do
conditional execution. Do we have any method to let the compiler know this?
Note that this is relevant only for Thumb1 and not for
$ gfortran -O -flto -g -c test.f
test.f: In function 'makenumberstring_':
test.f:8:0: internal compiler error: in lto_output_tree_ref, at
lto-streamer-out.c:732
That's with Rev. 152840 (and thus later then Rev. 152767 which fixed PR 41521).
Reduced testcase:
FUNCTION makenumberstring(x)
--- Comment #3 from ramana at gcc dot gnu dot org 2009-10-15 08:30 ---
No response in more than 6 months. This is now marked as INVALID because we
don't have enough information to go by.
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ramana at gcc dot gnu dot org changed:
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--- Comment #4 from ramana at gcc dot gnu dot org 2009-10-15 08:30 ---
Invalid
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--- Comment #4 from ramana at gcc dot gnu dot org 2009-10-15 08:32 ---
No feedback in about 6 months. I'm closing this out as this can't be reproduced
with trunk as of today.
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--- Comment #7 from rguenther at suse dot de 2009-10-15 08:41 ---
Subject: Re: [4.5 regression] possible
miscompilation in whole-program mode
On Tue, 13 Oct 2009, sje at cup dot hp dot com wrote:
--- Comment #6 from sje at cup dot hp dot com 2009-10-13 16:05 ---
The new
--- Comment #2 from anlauf at gmx dot de 2009-10-15 08:47 ---
(In reply to comment #1)
The manual reads:
VALUES The type shall be REAL, DIMENSION(2).
where I understand REAL as REAL(4). Hence if you want to use -fdefault-real-8,
you have to avoid the promotion of the ETIME
--- Comment #5 from burnus at gcc dot gnu dot org 2009-10-15 08:48 ---
The patch is fine for 64-bit architectures.
I agree and it should be applied - incl. testcase.
On 32-bit architectures
such as i686-*-freebsd the patch fails because there is a REAL(10)
but no INTEGER(16).
Hmm,
--- Comment #6 from dominiq at lps dot ens dot fr 2009-10-15 09:25 ---
Note that the same problem occurs for REAL(16) on powerpc.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41711
--- Comment #3 from ramana at gcc dot gnu dot org 2009-10-15 10:19 ---
Confirmed.
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--- Comment #3 from ebotcazou at gcc dot gnu dot org 2009-10-15 10:20
---
The problem comes from cp/layout_class_type: it creates the version of the
class to be used for virtual bases before laying out the virtual base classes
of the class itself, in particular its alignment is set to
--- Comment #9 from ramana at gcc dot gnu dot org 2009-10-15 10:44 ---
(In reply to comment #8)
This is fixed in trunk but at least gcc-4.4.0, where this bug was found, is
still broken.
I have no approval rights but can you test ask to backport this to 4.4 branch
after the freeze
--- Comment #2 from ramana at gcc dot gnu dot org 2009-10-15 10:48 ---
I don't see this with an arm-none-eabi or indeed an arm-linux-gnueabi target.
Is there any reason why you are still using the arm-elf target rather than
moving to the eabi configurations ?
cheers
Ramana
--
--- Comment #7 from drow at gcc dot gnu dot org 2009-10-15 12:12 ---
I really would like to see this submitted - at least as a starting point for
discussion. You don't need to do anything different than for a small patch; if
you've missed any steps, a reviewer will tell you.
Another
The following program should print 1, 2. It does so with ifort but with
gfortran it prints 1, 0.
type t
integer :: i
end type t
type, extends(t) :: t2
integer :: j
end type t2
class(t), allocatable :: a
allocate(a, source=t2(1,2))
print *,a%i
if(a%i /= 1) call abort()
select type (a)
type
--- Comment #7 from dgutson at codesourcery dot com 2009-10-15 12:33
---
Subject: Re: The use of ARM NEON vshll_n_u8 intrinsic results
in compile error on valid code [4.4 only]
ramana at gcc dot gnu dot org wrote:
--- Comment #6 from ramana at gcc dot gnu dot org 2009-10-15
Because we end up with VIEW_CONVERT_EXPRs in places where we do not want them.
lto1: internal compiler error: in remap_decls, at tree-inline.c:576
internal compiler error: tree check: expected tree that contains 'decl common'
structure, have 'view_convert_expr' in remap_decls, at
--- Comment #1 from rguenth at gcc dot gnu dot org 2009-10-15 12:41 ---
Mine. It's not exactly clear how to avoid this the easies - probably keeping
some state what we are walking in lto_fixup_*. In theory we'd only need to
fixup the decl pointers in the reader cache so reading of the
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--- Comment #1 from janus at gcc dot gnu dot org 2009-10-15 13:14 ---
Certainly mine. I should have thought of this case when fixing PR41581. The
cure is for sure:
Index: gcc/fortran/trans-stmt.c
===
---
--- Comment #7 from hjl at gcc dot gnu dot org 2009-10-15 14:01 ---
Subject: Bug 41665
Author: hjl
Date: Thu Oct 15 14:00:57 2009
New Revision: 152845
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=152845
Log:
2009-10-15 H.J. Lu hongjiu...@intel.com
Backport from
--- Comment #8 from hjl dot tools at gmail dot com 2009-10-15 14:05 ---
Fixed.
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--- Comment #7 from mikpe at it dot uu dot se 2009-10-15 14:12 ---
(In reply to comment #6)
A bisection has identified revision 139725 as the origin of this regression.
That revision added support for -fsection-anchors on arm and enabled it by
default at -O1 and above. Compiling with
--- Comment #3 from kargl at gcc dot gnu dot org 2009-10-15 14:13 ---
(In reply to comment #2)
(In reply to comment #1)
The manual reads:
VALUES The type shall be REAL, DIMENSION(2).
where I understand REAL as REAL(4). Hence if you want to use
-fdefault-real-8,
you
--- Comment #8 from mikpe at it dot uu dot se 2009-10-15 14:14 ---
Created an attachment (id=18799)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18799action=view)
kludge to disable section anchors on arm for gcc-4.4
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41684
--- Comment #57 from mahatma at eu dot by 2009-10-15 14:29 ---
(In reply to comment #53)
Created an attachment (id=18656)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18656action=view) [edit]
An updated patch for gcc 4.4
Oops. Wrong patch. Trry this one.
Looks good for
--- Comment #8 from manu at gcc dot gnu dot org 2009-10-15 15:02 ---
This is not a regression, so it does not have a target milestone. If ever
fixed, it will only be fixed in trunk.
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--- Comment #9 from ramana at gcc dot gnu dot org 2009-10-15 15:17 ---
(In reply to comment #7)
(In reply to comment #6)
A bisection has identified revision 139725 as the origin of this regression.
That revision added support for -fsection-anchors on arm and enabled it by
default
--- Comment #4 from manu at gcc dot gnu dot org 2009-10-15 15:21 ---
BTW, Clang claims to get this right. Quoting from:
http://clang.llvm.org/diagnostics.html
$ gcc-4.2 t.c
t.c:3: error: expected '=', ',', ';', 'asm' or '__attribute__' before '*'
token
$ clang t.c
t.c:3:1:
--- Comment #4 from wuerzner at gmail dot com 2009-10-15 15:46 ---
Hi,
has there been any change on the std::fill policy, yet? If yes, in which
version did you integrate the parallel fill?
Many thanks,
Kay
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38875
lto/41669
* gimple.c (gimple_get_alias_set): Avoid recursing on
invalid type topology.
* gcc.dg/lto/20091015-1_0.c: New testcase.
* gcc.dg/lto/20091015-1_1.c: Likewise.
* gcc.dg/lto/20091015-1_2.c: Likewise.
* gcc.dg/lto/20091015-1_a.h: Likewise
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