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From: "wilco at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/94502] [aarch64] Missing LR register location in FDE
Date: Wed, 08 Apr 2020 14:20:42 +0000	[thread overview]
Message-ID: <bug-94502-4-qbvCCEMYgR@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-94502-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94502

--- Comment #4 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Luis Machado from comment #3)

> The lack of a rule for LR means GDB will assume the register is UNSPECIFIED.
> Is GCC assuming this register is considered to have the same value as an
> inner frame?

Right so it's a leaf function like I suspected. The default rule has always
been to use the return register LR if it isn't stored (and that doesn't change
if you adjust the stack). Leaf functions have always worked, so I'm surprised
you are seeing an issue.

  parent reply	other threads:[~2020-04-08 14:20 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-06 14:55 [Bug debug/94502] New: " luis.machado at linaro dot org
2020-04-08 13:22 ` [Bug debug/94502] " luis.machado at linaro dot org
2020-04-08 13:57 ` wilco at gcc dot gnu.org
2020-04-08 14:15 ` luis.machado at linaro dot org
2020-04-08 14:20 ` wilco at gcc dot gnu.org [this message]
2020-04-08 14:40 ` luis.machado at linaro dot org
2020-04-08 14:40 ` luis.machado at linaro dot org
2020-04-09 10:34 ` rearnsha at gcc dot gnu.org

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