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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug record/29721] [gdb, record, aarch64] FAIL:
 gdb.reverse/solib-precsave.exp: reverse-next third shr1
Date: Mon, 16 Jan 2023 15:58:45 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29721

--- Comment #17 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Tom de Vries from comment #16)
> On aarch64 (with additional_flags=3D-fno-omit-frame-pointer
> additional_flags=3D-mno-omit-leaf-frame-pointer added, to have more compa=
rable
> code), we have:

And for completeness-sake, without those flags (so, exercising the original
failure):
...
0000000000000594 <shr1>:
 594:   d10043ff        sub     sp, sp, #0x10
 598:   f90007e0        str     x0, [sp, #8]
 59c:   d503201f        nop
 5a0:   910043ff        add     sp, sp, #0x10
 5a4:   d65f03c0        ret
...
and at first insn:
...
1: /x $pc =3D 0xfffff7f9d594
2: /x $sp =3D 0xfffffffff320
3: /x $x29 =3D 0xfffffffff320
(gdb) info frame
Stack level 0, frame at 0xfffffffff320:
 pc =3D 0xfffff7f9d594 in shr1; saved pc =3D 0x400718
 called by frame at 0xfffffffff340
 Arglist at 0xfffffffff320, args:=20
 Locals at 0xfffffffff320, Previous frame's sp is 0xfffffffff320
...
and at last insn:
...
1: /x $pc =3D 0xfffff7f9d5a4
2: /x $sp =3D 0xfffffffff320
3: /x $x29 =3D 0xfffffffff320
(gdb) info frame
Stack level 0, frame at 0xfffffffff330:
 pc =3D 0xfffff7f9d5a4 in shr1; saved pc =3D 0x400718
 called by frame at 0xfffffffff340
 Arglist at 0xfffffffff320, args:=20
 Locals at 0xfffffffff320, Previous frame's sp is 0xfffffffff330
 Saved registers:
  x0 at 0xfffffffff328
...

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