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* [Bug target/64405] New: [arm] Invalid codegenaration for ARMv3 and ARMv2
@ 2014-12-25 14:36 Sergey.Belyashov at gmail dot com
2014-12-25 14:47 ` [Bug target/64405] " Sergey.Belyashov at gmail dot com
2021-07-21 5:22 ` pinskia at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: Sergey.Belyashov at gmail dot com @ 2014-12-25 14:36 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64405
Bug ID: 64405
Summary: [arm] Invalid codegenaration for ARMv3 and ARMv2
Product: gcc
Version: 4.8.5
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: Sergey.Belyashov at gmail dot com
I try to compile program for ARMv3 or ARMv2 CPU target using GCC (4.8.x). It
produces assembler code with BX LR instructions (return from function) which
GAS (2.23.2) cannot compile:
Error: selected processor does not support ARM mode `bx lr'
It is work for ARMv4 mode and greater (ARMv4 has no BX <reg> instruction
support, but GAS compiles it as MOV PC,<reg>).
As I know BX <reg> is strongly recommended to be used instead of MOV PC,<reg>
by the ARM architecture manual (section A.4.1.1) but GAS developers says, that
it is GCC bug.
GAS mail archive:
https://lists.gnu.org/archive/html/bug-binutils/2014-10/msg00017.html
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug target/64405] [arm] Invalid codegenaration for ARMv3 and ARMv2
2014-12-25 14:36 [Bug target/64405] New: [arm] Invalid codegenaration for ARMv3 and ARMv2 Sergey.Belyashov at gmail dot com
@ 2014-12-25 14:47 ` Sergey.Belyashov at gmail dot com
2021-07-21 5:22 ` pinskia at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: Sergey.Belyashov at gmail dot com @ 2014-12-25 14:47 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64405
Sergey Belyashov <Sergey.Belyashov at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |ARMv4
Known to fail| |4.8.4
--- Comment #1 from Sergey Belyashov <Sergey.Belyashov at gmail dot com> ---
answer about GAS:
https://lists.gnu.org/archive/html/bug-binutils/2014-12/msg00145.html
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug target/64405] [arm] Invalid codegenaration for ARMv3 and ARMv2
2014-12-25 14:36 [Bug target/64405] New: [arm] Invalid codegenaration for ARMv3 and ARMv2 Sergey.Belyashov at gmail dot com
2014-12-25 14:47 ` [Bug target/64405] " Sergey.Belyashov at gmail dot com
@ 2021-07-21 5:22 ` pinskia at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-07-21 5:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64405
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
Resolution|--- |WONTFIX
Status|NEW |RESOLVED
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
ARMv3/ARMv2 support was removed in GCC 9+ (r9-404). So closing as won't fix.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2021-07-21 5:22 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2014-12-25 14:36 [Bug target/64405] New: [arm] Invalid codegenaration for ARMv3 and ARMv2 Sergey.Belyashov at gmail dot com
2014-12-25 14:47 ` [Bug target/64405] " Sergey.Belyashov at gmail dot com
2021-07-21 5:22 ` pinskia at gcc dot gnu.org
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