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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/63906] New: [5 Regression] lra_remat mis-compiles glibc on aarch64
Date: Mon, 17 Nov 2014 03:22:00 -0000	[thread overview]
Message-ID: <bug-63906-4@http.gcc.gnu.org/bugzilla/> (raw)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63906

            Bug ID: 63906
           Summary: [5 Regression] lra_remat mis-compiles glibc on aarch64
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: blocker
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
            Target: aarch64-linux-gnu

I don't have much information yet but I wanted to file this so I don't lose
track of it.

With lra_remat turned on, we get a crash inside dl_main.

   0x000000400080386c <dl_main+5604>:   ldr     x2, [x3,w0,uxtw #3]
=> 0x0000004000803870 <dl_main+5608>:   ldrb    w1, [x2,#788]
(gdb) p $x2
$1 = 0


             reply	other threads:[~2014-11-17  3:22 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-17  3:22 pinskia at gcc dot gnu.org [this message]
2014-11-17  3:22 ` [Bug rtl-optimization/63906] " pinskia at gcc dot gnu.org
2014-11-17  3:53 ` pinskia at gcc dot gnu.org
2014-11-17  3:54 ` pinskia at gcc dot gnu.org
2014-11-17  4:46 ` [Bug rtl-optimization/63906] [5 Regression] dse after reload miscompiles glibc with lra_remat turned " pinskia at gcc dot gnu.org
2014-11-17  4:47 ` pinskia at gcc dot gnu.org
2014-11-17  5:01 ` [Bug rtl-optimization/63906] [5 Regression] lra_remat miscompiles glibc " pinskia at gcc dot gnu.org
2014-11-17  9:19 ` rguenth at gcc dot gnu.org
2014-11-17 20:30 ` vmakarov at gcc dot gnu.org
2014-11-18  0:15 ` vmakarov at gcc dot gnu.org
2014-11-18  3:23 ` pinskia at gcc dot gnu.org

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