** Branch linked: lp:debian/experimental/gcc-4.7
** Branch linked: lp:ubuntu/gcc-4.7
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https://bugs.launchpad.net/bugs/1135633
Title:
[linaro regression] alsa-tools FTBFS with error
** Changed in: gcc
Status: New = Fix Released
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https://bugs.launchpad.net/bugs/1135633
Title:
[linaro regression] alsa-tools FTBFS with error unable to find a
register to
** Changed in: gcc-linaro
Milestone: None = 4.7-2013.03
** Changed in: gcc-linaro
Status: Confirmed = Fix Released
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https://bugs.launchpad.net/bugs/1135633
Title:
[linaro
This bug was fixed in the package gcc-4.7 - 4.7.2-22ubuntu3
---
gcc-4.7 (4.7.2-22ubuntu3) raring; urgency=low
* Update to SVN 20130307 (r196523) from the gcc-4_7-branch.
- Fix PR libstdc++/56012, PR libstdc++/56011, PR target/56529 (SH),
PR tree-optimization/55481, PR
-ftree-coalesce-vars is enabled in FSF GCC trunk by default. Disabling
it will prevent the issue occuring for reduced test case in GCC FSF
trunk.
I believe this flag is not available in GCC branch.
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./install-linaro-4.7-2013.02-01/bin/gcc -O2 test.c -fno-tree-coalesce-
vars passes that test case.
I think teh flag is included for gcc4.7-linaro-4.7-2013.02-01
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GCC 4.7 FSF branch does not support -ftree-coalesce-vars till now. But
GCC 4.7-linaro supports that. Disabling (-fno-tree-coalesce-var) will
solve this issue as of now.
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works on armhf, fails on x86, looks like a regression.
** Summary changed:
- alsa-tools FTBFS with error unable to find a register to spill in class
‘AREG’
+ [linaro regression] alsa-tools FTBFS with error unable to find a register to
spill in class ‘AREG’
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** Changed in: gcc-linaro
Status: New = Confirmed
** Changed in: gcc-linaro
Importance: Undecided = High
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Title:
[linaro regression]
Reduced test case which triggers on gcc-linaro 4.7 in the same way.
** Attachment added: Reduced test case.
https://bugs.launchpad.net/ubuntu/+source/gcc-4.7/+bug/1135633/+attachment/3551350/+files/reduced.c
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Also managed to trigger this on upstream GCC trunk (but with an ICE in
LRA):
$ gcc -O2 -c besttry.c
besttry.c: In function ‘output_spdif’:
besttry.c:20:1: internal compiler error: in assign_by_spills, at
lra-assigns.c:1268
}
^
0x7f1cf8 assign_by_spills
GCC PR 56484 added to track the upstream issue.
** Bug watch added: GCC Bugzilla #56484
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56484
** Also affects: gcc via
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56484
Importance: Unknown
Status: Unknown
** Changed in: gcc-linaro
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