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From: "mirq-gccboogs at rere dot qmqm dot pl" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/43471] Unnecessary reload of asm "m" operand address Date: Tue, 23 Mar 2010 14:04:00 -0000 [thread overview] Message-ID: <20100323140405.14712.qmail@sourceware.org> (raw) In-Reply-To: <bug-43471-18939@http.gcc.gnu.org/bugzilla/> ------- Comment #5 from mirq-gccboogs at rere dot qmqm dot pl 2010-03-23 14:04 ------- The problem is that gcc sometimes emits instructions that are copying the global r4 (even when it's marked as const) into temporary. Originally I thought that the simplies case was this asm statememt, but it looks like it depends on having adress of a structure field taken as a parameter for a function that's later inlined. I'll file a new report with the second example and this explanation. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43471
next prev parent reply other threads:[~2010-03-23 14:04 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2010-03-21 20:08 [Bug rtl-optimization/43471] New: " mirq-gccboogs at rere dot qmqm dot pl 2010-03-22 23:05 ` [Bug rtl-optimization/43471] " ramana at gcc dot gnu dot org 2010-03-23 5:43 ` mirq-gccboogs at rere dot qmqm dot pl 2010-03-23 5:52 ` mirq-gccboogs at rere dot qmqm dot pl 2010-03-23 13:18 ` rearnsha at gcc dot gnu dot org 2010-03-23 14:04 ` mirq-gccboogs at rere dot qmqm dot pl [this message] 2010-04-15 21:51 ` kkojima at gcc dot gnu dot org
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