--- Comment #8 from jdemeyer at cage dot ugent dot be 2010-04-30 07:24
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On first sight, it looks fixed in gcc 4.6.0 SVN.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37195
: inline-asm
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: jdemeyer at cage dot ugent dot be
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41294
--- Comment #1 from jdemeyer at cage dot ugent dot be 2009-09-07 10:49
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Created an attachment (id=18528)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18528action=view)
Testcase
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41294
--- Comment #3 from jdemeyer at cage dot ugent dot be 2009-09-07 19:30
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(In reply to comment #2)
I think you need to mark both alternatives early-clobber, not only the
register
one. Thus =rm at least according to the manual.
That doesn't seem to change anything. It looks
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: jdemeyer at cage dot ugent dot be
GCC build triplet: x86_64-unknown-linux-gnu
GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41263
--- Comment #1 from jdemeyer at cage dot ugent dot be 2009-09-04 13:21
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Created an attachment (id=18493)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18493action=view)
Testcase
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41263
--- Comment #5 from jdemeyer at cage dot ugent dot be 2008-09-29 19:22
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Created an attachment (id=16428)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16428action=view)
Unified testcase
This testcase exhibits the problem on i386, x86_64, powerpc and powerpc64 using
Version: 4.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: jdemeyer at cage dot ugent dot be
GCC build triplet: i686-pc-linux-gnu
GCC host triplet
--- Comment #1 from jdemeyer at cage dot ugent dot be 2008-09-16 16:40
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Created an attachment (id=16339)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16339action=view)
Testcase
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37544
--- Comment #3 from jdemeyer at cage dot ugent dot be 2008-09-16 18:39
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In fact, with -mno-sse the problem disappears for me too.
I *do* get the problem with
gcc -std=c99 -O1 -march=i386 -msse2 -mfpmath=387
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jdemeyer at cage dot ugent dot be changed:
What
--- Comment #4 from jdemeyer at cage dot ugent dot be 2008-09-03 07:57
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Created an attachment (id=16200)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16200action=view)
Testcase for powerpc-unknown-linux-gnu
Also fails on powerpc:
$ gcc -O1 test37195-powerpc.i -save-temps -c
--- Comment #3 from jdemeyer at cage dot ugent dot be 2008-09-02 08:52
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Created an attachment (id=16187)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16187action=view)
Further testcase simplification
The third testcase uses only rm and =rm constraints, which means
--- Comment #2 from jdemeyer at cage dot ugent dot be 2008-09-01 18:18
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Created an attachment (id=16183)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16183action=view)
Better and simpler test case
The second test case, asmtest2.i exhibits the bug on even more versions of gcc
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jdemeyer at cage dot ugent dot be changed:
What|Removed |Added
Severity|normal |major
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37195
--
jdemeyer at cage dot ugent dot be changed:
What|Removed |Added
CC||jdemeyer at cage dot ugent
in
inline assembly
Product: gcc
Version: 4.2.4
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: inline-asm
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: jdemeyer at cage dot ugent
--- Comment #1 from jdemeyer at cage dot ugent dot be 2008-08-21 21:16
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Created an attachment (id=16123)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16123action=view)
Source code which shows the problem
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37195
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