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From: "Sergey.Belyashov at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/64405] New: [arm] Invalid codegenaration for ARMv3 and ARMv2 Date: Thu, 25 Dec 2014 14:36:00 -0000 [thread overview] Message-ID: <bug-64405-4@http.gcc.gnu.org/bugzilla/> (raw) 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
next reply other threads:[~2014-12-25 14:36 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-12-25 14:36 Sergey.Belyashov at gmail dot com [this message] 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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