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[patchv3] Fix crash on optimized-out entry data values

From: Jan Kratochvil <jan dot kratochvil at redhat dot com>
To: Pedro Alves <palves at redhat dot com>
Cc: gdb-patches at sourceware dot org
Date: Fri, 11 Jul 2014 17:37:57 +0200
Subject: [patchv3] Fix crash on optimized-out entry data values
Authentication-results: sourceware.org; auth=none
References: <20140709103312 dot GA27884 at host2 dot jankratochvil dot net> <53BD2CE0 dot 1000308 at redhat dot com> <20140709153121 dot GA7989 at host2 dot jankratochvil dot net>

On Wed, 09 Jul 2014 17:31:21 +0200, Jan Kratochvil wrote:
> On Wed, 09 Jul 2014 13:52:00 +0200, Pedro Alves wrote:
> > On 07/09/2014 11:33 AM, Jan Kratochvil wrote:
> > > --- a/gdb/value.c
> > > +++ b/gdb/value.c
> > > @@ -198,12 +198,13 @@ struct value
> > >    unsigned int lazy : 1;
> > >  
> > >    /* If nonzero, this is the value of a variable that does not
> > > -     actually exist in the program.  If nonzero, and LVAL is
> > > +     actually fully exist in the program.  If nonzero, and LVAL is
> > >       lval_register, this is a register ($pc, $sp, etc., never a
> > >       program variable) that has not been saved in the frame.  All
> > >       optimized-out values are treated pretty much the same, except
> > >       registers have a different string representation and related
> > > -     error strings.  */
> > > +     error strings.  It is true also for only partially optimized
> > > +     out variables - see the 'unavailable' field below.  */
> > >    unsigned int optimized_out : 1;
> > >  
> > >    /* If value is a variable, is it initialized or not.  */
> > > @@ -334,7 +335,10 @@ struct value
> > >       valid if lazy is nonzero.  */
> > >    gdb_byte *contents;
> > >  
> > > -  /* Unavailable ranges in CONTENTS.  We mark unavailable ranges,
> > > +  /* If OPTIMIZED_OUT is false then UNAVAILABLE must be VEC_empty
> > > +     (not necessarily NULL).  
> > 
> > Hmm, why?  We can collect only part of a non-optimized out value.
> > What am I missing?
> 
> I miss some documentation how these availability fields interact together.

>From a comment in mail
	Message-Id: <201102071427.55970.pedro@codesourcery.com>
	We give preference to printing <optimized out> rather
	than <unavailable>, since if a value had been optimized out
	at compile time, it can never be collected at run-time.

it seems it is just reversed, that 'unavailable' can exist only for
!optimized_out and it cannot exist for for optimized_out values.


> You are right, this patch regresses during gdbserver mode.

It PASSes now even in gdbserver mode.


Thanks,
Jan

gdb/
2014-07-09  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* value.c (struct value): Extend the comment for fields optimized_out
	and unavailable.
	(value_available_contents_bits_eq): Handle OPTIMIZED_OUT values as
	special cases.

gdb/testsuite/
2014-07-09  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* gdb.arch/amd64-entry-value-paramref.S: New file.
	* gdb.arch/amd64-entry-value-paramref.cc: New file.
	* gdb.arch/amd64-entry-value-paramref.exp: New file.
	* gdb.arch/amd64-optimout-repeat.S: New file.
	* gdb.arch/amd64-optimout-repeat.c: New file.
	* gdb.arch/amd64-optimout-repeat.exp: New file.

diff --git a/gdb/value.c b/gdb/value.c
index 557056f..c017c75 100644
--- a/gdb/value.c
+++ b/gdb/value.c
@@ -198,12 +198,14 @@ struct value
   unsigned int lazy : 1;
 
   /* If nonzero, this is the value of a variable that does not
-     actually exist in the program.  If nonzero, and LVAL is
+     actually exist in the program at all.  If nonzero, and LVAL is
      lval_register, this is a register ($pc, $sp, etc., never a
      program variable) that has not been saved in the frame.  All
      optimized-out values are treated pretty much the same, except
      registers have a different string representation and related
-     error strings.  */
+     error strings.  When it is zero it still maybe only partially
+     available (equally partially optimized out) - see the
+     'unavailable' field below.  */
   unsigned int optimized_out : 1;
 
   /* If value is a variable, is it initialized or not.  */
@@ -334,7 +336,9 @@ struct value
      valid if lazy is nonzero.  */
   gdb_byte *contents;
 
-  /* Unavailable ranges in CONTENTS.  We mark unavailable ranges,
+  /* If OPTIMIZED_OUT is nonzero then UNAVAILABLE must be VEC_empty
+     (not necessarily NULL).  Otherwise it specifies
+     unavailable ranges in CONTENTS.  We mark unavailable ranges,
      rather than available, since the common and default case is for a
      value to be available.  This is filled in at value read time.  The
      unavailable ranges are tracked in bits.  */
@@ -701,6 +705,13 @@ value_available_contents_bits_eq (const struct value *val1, int offset1,
   /* See function description in value.h.  */
   gdb_assert (!val1->lazy && !val2->lazy);
 
+  gdb_assert (!val1->optimized_out || VEC_empty (range_s, val1->unavailable));
+  gdb_assert (!val2->optimized_out || VEC_empty (range_s, val2->unavailable));
+  if (val1->optimized_out != val2->optimized_out)
+    return 0;
+  if (val1->optimized_out && val2->optimized_out)
+    return 1;
+
   while (length > 0)
     {
       range_s *r1, *r2;
diff --git a/gdb/testsuite/gdb.arch/amd64-entry-value-paramref.S b/gdb/testsuite/gdb.arch/amd64-entry-value-paramref.S
new file mode 100644
index 0000000..a1e9d0a
--- /dev/null
+++ b/gdb/testsuite/gdb.arch/amd64-entry-value-paramref.S
@@ -0,0 +1,459 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2014 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* This file is compiled from gdb.arch/amd64-entry-value-paramref.cc
+   using -g -dA -S -O2.
+   Additionally it has been patched.  */
+
+	.file	"amd64-entry-value-paramref.cc"
+	.text
+.Ltext0:
+	.p2align 4,,15
+	.type	_ZL3barRi.constprop.0, @function
+_ZL3barRi.constprop.0:
+.LFB2:
+	.file 1 "gdb.arch/amd64-entry-value-paramref.cc"
+	# gdb.arch/amd64-entry-value-paramref.cc:21
+	.loc 1 21 0
+	.cfi_startproc
+.LVL0:
+# BLOCK 2 freq:10000 seq:0
+# PRED: ENTRY [100.0%]  (FALLTHRU)
+	# gdb.arch/amd64-entry-value-paramref.cc:23
+	.loc 1 23 0
+	movl	vv(%rip), %eax
+	# gdb.arch/amd64-entry-value-paramref.cc:24
+	.loc 1 24 0
+	movq	%rdi, p(%rip)
+	# gdb.arch/amd64-entry-value-paramref.cc:23
+	.loc 1 23 0
+	addl	$1, %eax
+	movl	%eax, vv(%rip)
+	# gdb.arch/amd64-entry-value-paramref.cc:25
+	.loc 1 25 0
+	movl	(%rdi), %eax
+# SUCC: EXIT [100.0%] 
+	# gdb.arch/amd64-entry-value-paramref.cc:26
+	.loc 1 26 0
+	ret
+	.cfi_endproc
+.LFE2:
+	.size	_ZL3barRi.constprop.0, .-_ZL3barRi.constprop.0
+	.section	.text.startup,"ax",@progbits
+	.p2align 4,,15
+	.globl	main
+	.type	main, @function
+main:
+.LFB1:
+	# gdb.arch/amd64-entry-value-paramref.cc:30
+	.loc 1 30 0
+	.cfi_startproc
+# BLOCK 2 freq:10000 seq:0
+# PRED: ENTRY [100.0%]  (FALLTHRU)
+	subq	$16, %rsp
+	.cfi_def_cfa_offset 24
+.LBB2:
+	# gdb.arch/amd64-entry-value-paramref.cc:32
+	.loc 1 32 0
+	leaq	12(%rsp), %rdi
+	# gdb.arch/amd64-entry-value-paramref.cc:31
+	.loc 1 31 0
+	movl	$10, 12(%rsp)
+	# gdb.arch/amd64-entry-value-paramref.cc:32
+	.loc 1 32 0
+	call	_ZL3barRi.constprop.0
+.LVL1:
+.LBE2:
+	# gdb.arch/amd64-entry-value-paramref.cc:33
+	.loc 1 33 0
+	addq	$16, %rsp
+	.cfi_def_cfa_offset 8
+# SUCC: EXIT [100.0%] 
+	ret
+	.cfi_endproc
+.LFE1:
+	.size	main, .-main
+	.globl	p
+	.bss
+	.align 8
+	.type	p, @object
+	.size	p, 8
+p:
+	.zero	8
+	.globl	vv
+	.align 4
+	.type	vv, @object
+	.size	vv, 4
+vv:
+	.zero	4
+	.text
+.Letext0:
+	.section	.debug_info,"",@progbits
+.Ldebug_info0:
+	.long	.Linfo_end - .Linfo_start	# Length of Compilation Unit Info
+.Linfo_start:
+	.value	0x4	# DWARF version number
+	.long	.Ldebug_abbrev0	# Offset Into Abbrev. Section
+	.byte	0x8	# Pointer Size (in bytes)
+	.uleb128 0x1	# (DIE (0xb) DW_TAG_compile_unit)
+	.long	.LASF0	# DW_AT_producer: "GNU C++ 4.8.2 20131212 (Red Hat 4.8.2-7) -mtune=generic -march=x86-64 -g -O2"
+	.byte	0x4	# DW_AT_language
+	.long	.LASF1	# DW_AT_name: "gdb.arch/amd64-entry-value-paramref.cc"
+	.long	.LASF2	# DW_AT_comp_dir: ""
+	.long	.Ldebug_ranges0+0	# DW_AT_ranges
+	.quad	0	# DW_AT_low_pc
+	.long	.Ldebug_line0	# DW_AT_stmt_list
+DIE29:	.uleb128 0x2	# (DIE (0x29) DW_TAG_subprogram)
+	.ascii "bar\0"	# DW_AT_name
+	.byte	0x1	# DW_AT_decl_file (gdb.arch/amd64-entry-value-paramref.cc)
+	.byte	0x15	# DW_AT_decl_line
+	.long	DIE45	# DW_AT_type
+	.byte	0x1	# DW_AT_inline
+DIE39:	.uleb128 0x3	# (DIE (0x39) DW_TAG_formal_parameter)
+	.ascii "ref\0"	# DW_AT_name
+	.byte	0x1	# DW_AT_decl_file (gdb.arch/amd64-entry-value-paramref.cc)
+	.byte	0x15	# DW_AT_decl_line
+	.long	DIE4c	# DW_AT_type
+	.byte	0	# end of children of DIE 0x29
+DIE45:	.uleb128 0x4	# (DIE (0x45) DW_TAG_base_type)
+	.byte	0x4	# DW_AT_byte_size
+	.byte	0x5	# DW_AT_encoding
+	.ascii "int\0"	# DW_AT_name
+DIE4c:	.uleb128 0x5	# (DIE (0x4c) DW_TAG_const_type)
+	.long	DIE51	# DW_AT_type
+DIE51:	.uleb128 0x6	# (DIE (0x51) DW_TAG_reference_type)
+	.byte	0x8	# DW_AT_byte_size
+	.long	DIE45	# DW_AT_type
+DIE57:	.uleb128 0x7	# (DIE (0x57) DW_TAG_subprogram)
+	.long	DIE29	# DW_AT_abstract_origin
+	.quad	.LFB2	# DW_AT_low_pc
+	.quad	.LFE2-.LFB2	# DW_AT_high_pc
+	.uleb128 0x1	# DW_AT_frame_base
+	.byte	0x9c	# DW_OP_call_frame_cfa
+			# DW_AT_GNU_all_call_sites
+DIE72:	.uleb128 0x8	# (DIE (0x72) DW_TAG_formal_parameter)
+	.long	DIE39	# DW_AT_abstract_origin
+	.uleb128 0x1	# DW_AT_location
+	.byte	0x55	# DW_OP_reg5
+	.byte	0	# end of children of DIE 0x57
+DIE7a:	.uleb128 0x9	# (DIE (0x7a) DW_TAG_subprogram)
+			# DW_AT_external
+	.long	.LASF3	# DW_AT_name: "main"
+	.byte	0x1	# DW_AT_decl_file (gdb.arch/amd64-entry-value-paramref.cc)
+	.byte	0x1d	# DW_AT_decl_line
+	.long	DIE45	# DW_AT_type
+	.quad	.LFB1	# DW_AT_low_pc
+	.quad	.LFE1-.LFB1	# DW_AT_high_pc
+	.uleb128 0x1	# DW_AT_frame_base
+	.byte	0x9c	# DW_OP_call_frame_cfa
+			# DW_AT_GNU_all_call_sites
+DIE9b:	.uleb128 0xa	# (DIE (0x9b) DW_TAG_lexical_block)
+	.quad	.LBB2	# DW_AT_low_pc
+	.quad	.LBE2-.LBB2	# DW_AT_high_pc
+DIEac:	.uleb128 0xb	# (DIE (0xac) DW_TAG_variable)
+	.ascii "var\0"	# DW_AT_name
+	.byte	0x1	# DW_AT_decl_file (gdb.arch/amd64-entry-value-paramref.cc)
+	.byte	0x1f	# DW_AT_decl_line
+	.long	DIE45	# DW_AT_type
+	.uleb128 0x2	# DW_AT_location
+	.byte	0x91	# DW_OP_fbreg
+	.sleb128 -12
+DIEba:	.uleb128 0xc	# (DIE (0xba) DW_TAG_GNU_call_site)
+	.quad	.LVL1	# DW_AT_low_pc
+	.long	DIE57	# DW_AT_abstract_origin
+DIEc7:	.uleb128 0xd	# (DIE (0xc7) DW_TAG_GNU_call_site_parameter)
+	.uleb128 0x1	# DW_AT_location
+	.byte	0x55	# DW_OP_reg5
+	.uleb128 0x2	# DW_AT_GNU_call_site_value
+	.byte	0x91	# DW_OP_fbreg
+	.sleb128 -12
+#if 0
+	.uleb128 0x1	# DW_AT_GNU_call_site_data_value
+	.byte	0x3a	# DW_OP_lit10
+#else
+	.uleb128 1f - 2f	# DW_AT_GNU_call_site_data_value
+2:
+	.byte	0xf3	# DW_OP_GNU_entry_value
+	.uleb128 1f - 3f
+3:
+	.byte	0x55	# DW_OP_reg5
+1:
+#endif
+	.byte	0	# end of children of DIE 0xba
+	.byte	0	# end of children of DIE 0x9b
+	.byte	0	# end of children of DIE 0x7a
+DIEd2:	.uleb128 0xe	# (DIE (0xd2) DW_TAG_variable)
+	.ascii "vv\0"	# DW_AT_name
+	.byte	0x1	# DW_AT_decl_file (gdb.arch/amd64-entry-value-paramref.cc)
+	.byte	0x12	# DW_AT_decl_line
+	.long	DIEe6	# DW_AT_type
+			# DW_AT_external
+	.uleb128 0x9	# DW_AT_location
+	.byte	0x3	# DW_OP_addr
+	.quad	vv
+DIEe6:	.uleb128 0xf	# (DIE (0xe6) DW_TAG_volatile_type)
+	.long	DIE45	# DW_AT_type
+DIEeb:	.uleb128 0xe	# (DIE (0xeb) DW_TAG_variable)
+	.ascii "p\0"	# DW_AT_name
+	.byte	0x1	# DW_AT_decl_file (gdb.arch/amd64-entry-value-paramref.cc)
+	.byte	0x12	# DW_AT_decl_line
+	.long	DIEfe	# DW_AT_type
+			# DW_AT_external
+	.uleb128 0x9	# DW_AT_location
+	.byte	0x3	# DW_OP_addr
+	.quad	p
+DIEfe:	.uleb128 0x10	# (DIE (0xfe) DW_TAG_pointer_type)
+	.byte	0x8	# DW_AT_byte_size
+	.long	DIEe6	# DW_AT_type
+	.byte	0	# end of children of DIE 0xb
+.Linfo_end:
+	.section	.debug_abbrev,"",@progbits
+.Ldebug_abbrev0:
+	.uleb128 0x1	# (abbrev code)
+	.uleb128 0x11	# (TAG: DW_TAG_compile_unit)
+	.byte	0x1	# DW_children_yes
+	.uleb128 0x25	# (DW_AT_producer)
+	.uleb128 0xe	# (DW_FORM_strp)
+	.uleb128 0x13	# (DW_AT_language)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x3	# (DW_AT_name)
+	.uleb128 0xe	# (DW_FORM_strp)
+	.uleb128 0x1b	# (DW_AT_comp_dir)
+	.uleb128 0xe	# (DW_FORM_strp)
+	.uleb128 0x55	# (DW_AT_ranges)
+	.uleb128 0x17	# (DW_FORM_sec_offset)
+	.uleb128 0x11	# (DW_AT_low_pc)
+	.uleb128 0x1	# (DW_FORM_addr)
+	.uleb128 0x10	# (DW_AT_stmt_list)
+	.uleb128 0x17	# (DW_FORM_sec_offset)
+	.byte	0
+	.byte	0
+	.uleb128 0x2	# (abbrev code)
+	.uleb128 0x2e	# (TAG: DW_TAG_subprogram)
+	.byte	0x1	# DW_children_yes
+	.uleb128 0x3	# (DW_AT_name)
+	.uleb128 0x8	# (DW_FORM_string)
+	.uleb128 0x3a	# (DW_AT_decl_file)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x3b	# (DW_AT_decl_line)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x49	# (DW_AT_type)
+	.uleb128 0x13	# (DW_FORM_ref4)
+	.uleb128 0x20	# (DW_AT_inline)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.byte	0
+	.byte	0
+	.uleb128 0x3	# (abbrev code)
+	.uleb128 0x5	# (TAG: DW_TAG_formal_parameter)
+	.byte	0	# DW_children_no
+	.uleb128 0x3	# (DW_AT_name)
+	.uleb128 0x8	# (DW_FORM_string)
+	.uleb128 0x3a	# (DW_AT_decl_file)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x3b	# (DW_AT_decl_line)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x49	# (DW_AT_type)
+	.uleb128 0x13	# (DW_FORM_ref4)
+	.byte	0
+	.byte	0
+	.uleb128 0x4	# (abbrev code)
+	.uleb128 0x24	# (TAG: DW_TAG_base_type)
+	.byte	0	# DW_children_no
+	.uleb128 0xb	# (DW_AT_byte_size)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x3e	# (DW_AT_encoding)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x3	# (DW_AT_name)
+	.uleb128 0x8	# (DW_FORM_string)
+	.byte	0
+	.byte	0
+	.uleb128 0x5	# (abbrev code)
+	.uleb128 0x26	# (TAG: DW_TAG_const_type)
+	.byte	0	# DW_children_no
+	.uleb128 0x49	# (DW_AT_type)
+	.uleb128 0x13	# (DW_FORM_ref4)
+	.byte	0
+	.byte	0
+	.uleb128 0x6	# (abbrev code)
+	.uleb128 0x10	# (TAG: DW_TAG_reference_type)
+	.byte	0	# DW_children_no
+	.uleb128 0xb	# (DW_AT_byte_size)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x49	# (DW_AT_type)
+	.uleb128 0x13	# (DW_FORM_ref4)
+	.byte	0
+	.byte	0
+	.uleb128 0x7	# (abbrev code)
+	.uleb128 0x2e	# (TAG: DW_TAG_subprogram)
+	.byte	0x1	# DW_children_yes
+	.uleb128 0x31	# (DW_AT_abstract_origin)
+	.uleb128 0x13	# (DW_FORM_ref4)
+	.uleb128 0x11	# (DW_AT_low_pc)
+	.uleb128 0x1	# (DW_FORM_addr)
+	.uleb128 0x12	# (DW_AT_high_pc)
+	.uleb128 0x7	# (DW_FORM_data8)
+	.uleb128 0x40	# (DW_AT_frame_base)
+	.uleb128 0x18	# (DW_FORM_exprloc)
+	.uleb128 0x2117	# (DW_AT_GNU_all_call_sites)
+	.uleb128 0x19	# (DW_FORM_flag_present)
+	.byte	0
+	.byte	0
+	.uleb128 0x8	# (abbrev code)
+	.uleb128 0x5	# (TAG: DW_TAG_formal_parameter)
+	.byte	0	# DW_children_no
+	.uleb128 0x31	# (DW_AT_abstract_origin)
+	.uleb128 0x13	# (DW_FORM_ref4)
+	.uleb128 0x2	# (DW_AT_location)
+	.uleb128 0x18	# (DW_FORM_exprloc)
+	.byte	0
+	.byte	0
+	.uleb128 0x9	# (abbrev code)
+	.uleb128 0x2e	# (TAG: DW_TAG_subprogram)
+	.byte	0x1	# DW_children_yes
+	.uleb128 0x3f	# (DW_AT_external)
+	.uleb128 0x19	# (DW_FORM_flag_present)
+	.uleb128 0x3	# (DW_AT_name)
+	.uleb128 0xe	# (DW_FORM_strp)
+	.uleb128 0x3a	# (DW_AT_decl_file)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x3b	# (DW_AT_decl_line)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x49	# (DW_AT_type)
+	.uleb128 0x13	# (DW_FORM_ref4)
+	.uleb128 0x11	# (DW_AT_low_pc)
+	.uleb128 0x1	# (DW_FORM_addr)
+	.uleb128 0x12	# (DW_AT_high_pc)
+	.uleb128 0x7	# (DW_FORM_data8)
+	.uleb128 0x40	# (DW_AT_frame_base)
+	.uleb128 0x18	# (DW_FORM_exprloc)
+	.uleb128 0x2117	# (DW_AT_GNU_all_call_sites)
+	.uleb128 0x19	# (DW_FORM_flag_present)
+	.byte	0
+	.byte	0
+	.uleb128 0xa	# (abbrev code)
+	.uleb128 0xb	# (TAG: DW_TAG_lexical_block)
+	.byte	0x1	# DW_children_yes
+	.uleb128 0x11	# (DW_AT_low_pc)
+	.uleb128 0x1	# (DW_FORM_addr)
+	.uleb128 0x12	# (DW_AT_high_pc)
+	.uleb128 0x7	# (DW_FORM_data8)
+	.byte	0
+	.byte	0
+	.uleb128 0xb	# (abbrev code)
+	.uleb128 0x34	# (TAG: DW_TAG_variable)
+	.byte	0	# DW_children_no
+	.uleb128 0x3	# (DW_AT_name)
+	.uleb128 0x8	# (DW_FORM_string)
+	.uleb128 0x3a	# (DW_AT_decl_file)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x3b	# (DW_AT_decl_line)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x49	# (DW_AT_type)
+	.uleb128 0x13	# (DW_FORM_ref4)
+	.uleb128 0x2	# (DW_AT_location)
+	.uleb128 0x18	# (DW_FORM_exprloc)
+	.byte	0
+	.byte	0
+	.uleb128 0xc	# (abbrev code)
+	.uleb128 0x4109	# (TAG: DW_TAG_GNU_call_site)
+	.byte	0x1	# DW_children_yes
+	.uleb128 0x11	# (DW_AT_low_pc)
+	.uleb128 0x1	# (DW_FORM_addr)
+	.uleb128 0x31	# (DW_AT_abstract_origin)
+	.uleb128 0x13	# (DW_FORM_ref4)
+	.byte	0
+	.byte	0
+	.uleb128 0xd	# (abbrev code)
+	.uleb128 0x410a	# (TAG: DW_TAG_GNU_call_site_parameter)
+	.byte	0	# DW_children_no
+	.uleb128 0x2	# (DW_AT_location)
+	.uleb128 0x18	# (DW_FORM_exprloc)
+	.uleb128 0x2111	# (DW_AT_GNU_call_site_value)
+	.uleb128 0x18	# (DW_FORM_exprloc)
+	.uleb128 0x2112	# (DW_AT_GNU_call_site_data_value)
+	.uleb128 0x18	# (DW_FORM_exprloc)
+	.byte	0
+	.byte	0
+	.uleb128 0xe	# (abbrev code)
+	.uleb128 0x34	# (TAG: DW_TAG_variable)
+	.byte	0	# DW_children_no
+	.uleb128 0x3	# (DW_AT_name)
+	.uleb128 0x8	# (DW_FORM_string)
+	.uleb128 0x3a	# (DW_AT_decl_file)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x3b	# (DW_AT_decl_line)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x49	# (DW_AT_type)
+	.uleb128 0x13	# (DW_FORM_ref4)
+	.uleb128 0x3f	# (DW_AT_external)
+	.uleb128 0x19	# (DW_FORM_flag_present)
+	.uleb128 0x2	# (DW_AT_location)
+	.uleb128 0x18	# (DW_FORM_exprloc)
+	.byte	0
+	.byte	0
+	.uleb128 0xf	# (abbrev code)
+	.uleb128 0x35	# (TAG: DW_TAG_volatile_type)
+	.byte	0	# DW_children_no
+	.uleb128 0x49	# (DW_AT_type)
+	.uleb128 0x13	# (DW_FORM_ref4)
+	.byte	0
+	.byte	0
+	.uleb128 0x10	# (abbrev code)
+	.uleb128 0xf	# (TAG: DW_TAG_pointer_type)
+	.byte	0	# DW_children_no
+	.uleb128 0xb	# (DW_AT_byte_size)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x49	# (DW_AT_type)
+	.uleb128 0x13	# (DW_FORM_ref4)
+	.byte	0
+	.byte	0
+	.byte	0
+	.section	.debug_aranges,"",@progbits
+	.long	0x3c	# Length of Address Ranges Info
+	.value	0x2	# DWARF Version
+	.long	.Ldebug_info0	# Offset of Compilation Unit Info
+	.byte	0x8	# Size of Address
+	.byte	0	# Size of Segment Descriptor
+	.value	0	# Pad to 16 byte boundary
+	.value	0
+	.quad	.Ltext0	# Address
+	.quad	.Letext0-.Ltext0	# Length
+	.quad	.LFB1	# Address
+	.quad	.LFE1-.LFB1	# Length
+	.quad	0
+	.quad	0
+	.section	.debug_ranges,"",@progbits
+.Ldebug_ranges0:
+	.quad	.Ltext0	# Offset 0
+	.quad	.Letext0
+	.quad	.LFB1	# Offset 0x10
+	.quad	.LFE1
+	.quad	0
+	.quad	0
+	.section	.debug_line,"",@progbits
+.Ldebug_line0:
+	.section	.debug_str,"MS",@progbits,1
+.LASF1:
+	.string	"gdb.arch/amd64-entry-value-paramref.cc"
+.LASF2:
+	.string	""
+.LASF0:
+	.string	"GNU C++ 4.8.2 20131212 (Red Hat 4.8.2-7) -mtune=generic -march=x86-64 -g -O2"
+.LASF3:
+	.string	"main"
+	.ident	"GCC: (GNU) 4.8.2 20131212 (Red Hat 4.8.2-7)"
+	.section	.note.GNU-stack,"",@progbits
diff --git a/gdb/testsuite/gdb.arch/amd64-entry-value-paramref.cc b/gdb/testsuite/gdb.arch/amd64-entry-value-paramref.cc
new file mode 100644
index 0000000..aa473a3
--- /dev/null
+++ b/gdb/testsuite/gdb.arch/amd64-entry-value-paramref.cc
@@ -0,0 +1,33 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2014 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+volatile int vv, *p;
+
+static __attribute__((noinline)) int
+bar (int &ref)
+{
+  vv++; /* break-here */
+  p = &ref;
+  return ref;
+}
+
+int
+main (void)
+{
+  int var = 10;
+  return bar (var);
+}
diff --git a/gdb/testsuite/gdb.arch/amd64-entry-value-paramref.exp b/gdb/testsuite/gdb.arch/amd64-entry-value-paramref.exp
new file mode 100644
index 0000000..f06247d
--- /dev/null
+++ b/gdb/testsuite/gdb.arch/amd64-entry-value-paramref.exp
@@ -0,0 +1,35 @@
+# Copyright (C) 2014 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+standard_testfile .S .cc
+
+if { ![istarget x86_64-*-* ] || ![is_lp64_target] } {
+    verbose "Skipping amd64-entry-value-paramref."
+    return
+}
+
+if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} "c++"] } {
+    return -1
+}
+
+if ![runto_main] {
+    return -1
+}
+
+set srcfile $srcfile2
+gdb_breakpoint [gdb_get_line_number "break-here"]
+
+gdb_continue_to_breakpoint "break-here" ".* break-here .*"
+gdb_test "frame" {bar \(ref=@0x[0-9a-f]+: 10, ref@entry=@0x[0-9a-f]+: <optimized out>\) at .*}
diff --git a/gdb/testsuite/gdb.arch/amd64-optimout-repeat.S b/gdb/testsuite/gdb.arch/amd64-optimout-repeat.S
new file mode 100644
index 0000000..2f8f4d2
--- /dev/null
+++ b/gdb/testsuite/gdb.arch/amd64-optimout-repeat.S
@@ -0,0 +1,297 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2012-2014 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* This file is compiled from gdb.arch/amd64-entry-value-param.c
+   using -g -dA -S -O2.  */
+
+	.file	"amd64-optimout-repeat.c"
+	.text
+.Ltext0:
+	.section	.text.unlikely,"ax",@progbits
+.LCOLDB0:
+	.section	.text.startup,"ax",@progbits
+.LHOTB0:
+	.p2align 4,,15
+	.section	.text.unlikely
+.Ltext_cold0:
+	.section	.text.startup
+	.globl	main
+	.type	main, @function
+main:
+.LFB0:
+	.file 1 "gdb.arch/amd64-optimout-repeat.c"
+	# gdb.arch/amd64-optimout-repeat.c:20
+	.loc 1 20 0
+	.cfi_startproc
+# BLOCK 2 freq:10000 seq:0
+# PRED: ENTRY [100.0%]  (FALLTHRU)
+.LVL0:
+	# gdb.arch/amd64-optimout-repeat.c:29
+	.loc 1 29 0
+	xorl	%eax, %eax
+# SUCC: EXIT [100.0%] 
+	ret
+	.cfi_endproc
+.LFE0:
+	.size	main, .-main
+	.section	.text.unlikely
+.LCOLDE0:
+	.section	.text.startup
+.LHOTE0:
+	.text
+.Letext0:
+	.section	.text.unlikely
+.Letext_cold0:
+	.section	.debug_info,"",@progbits
+.Ldebug_info0:
+	.long	0x97	# Length of Compilation Unit Info
+	.value	0x4	# DWARF version number
+	.long	.Ldebug_abbrev0	# Offset Into Abbrev. Section
+	.byte	0x8	# Pointer Size (in bytes)
+	.uleb128 0x1	# (DIE (0xb) DW_TAG_compile_unit)
+	.long	.LASF1	# DW_AT_producer: "GNU C 4.9.1 20140709 (prerelease) -mtune=generic -march=x86-64 -g -O2"
+	.byte	0x1	# DW_AT_language
+	.long	.LASF2	# DW_AT_name: "gdb.arch/amd64-optimout-repeat.c"
+	.long	.LASF3	# DW_AT_comp_dir: ""
+	.long	.Ldebug_ranges0+0	# DW_AT_ranges
+	.quad	0	# DW_AT_low_pc
+	.long	.Ldebug_line0	# DW_AT_stmt_list
+	.uleb128 0x2	# (DIE (0x29) DW_TAG_subprogram)
+			# DW_AT_external
+	.long	.LASF4	# DW_AT_name: "main"
+	.byte	0x1	# DW_AT_decl_file (gdb.arch/amd64-optimout-repeat.c)
+	.byte	0x13	# DW_AT_decl_line
+			# DW_AT_prototyped
+	.long	0x7c	# DW_AT_type
+	.quad	.LFB0	# DW_AT_low_pc
+	.quad	.LFE0-.LFB0	# DW_AT_high_pc
+	.uleb128 0x1	# DW_AT_frame_base
+	.byte	0x9c	# DW_OP_call_frame_cfa
+			# DW_AT_GNU_all_call_sites
+	.long	0x7c	# DW_AT_sibling
+	.uleb128 0x3	# (DIE (0x4a) DW_TAG_structure_type)
+	.value	0x404	# DW_AT_byte_size
+	.byte	0x1	# DW_AT_decl_file (gdb.arch/amd64-optimout-repeat.c)
+	.byte	0x15	# DW_AT_decl_line
+	.long	0x6a	# DW_AT_sibling
+	.uleb128 0x4	# (DIE (0x53) DW_TAG_member)
+	.ascii "i\0"	# DW_AT_name
+	.byte	0x1	# DW_AT_decl_file (gdb.arch/amd64-optimout-repeat.c)
+	.byte	0x17	# DW_AT_decl_line
+	.long	0x7c	# DW_AT_type
+	.byte	0	# DW_AT_data_member_location
+	.uleb128 0x4	# (DIE (0x5d) DW_TAG_member)
+	.ascii "xxx\0"	# DW_AT_name
+	.byte	0x1	# DW_AT_decl_file (gdb.arch/amd64-optimout-repeat.c)
+	.byte	0x18	# DW_AT_decl_line
+	.long	0x83	# DW_AT_type
+	.byte	0x4	# DW_AT_data_member_location
+	.byte	0	# end of children of DIE 0x4a
+	.uleb128 0x5	# (DIE (0x6a) DW_TAG_variable)
+	.ascii "v\0"	# DW_AT_name
+	.byte	0x1	# DW_AT_decl_file (gdb.arch/amd64-optimout-repeat.c)
+	.byte	0x1a	# DW_AT_decl_line
+	.long	0x4a	# DW_AT_type
+	.uleb128 0x7	# DW_AT_location
+	.byte	0x30	# DW_OP_lit0
+	.byte	0x9f	# DW_OP_stack_value
+	.byte	0x93	# DW_OP_piece
+	.uleb128 0x4
+	.byte	0x93	# DW_OP_piece
+	.uleb128 0x400
+	.byte	0	# end of children of DIE 0x29
+	.uleb128 0x6	# (DIE (0x7c) DW_TAG_base_type)
+	.byte	0x4	# DW_AT_byte_size
+	.byte	0x5	# DW_AT_encoding
+	.ascii "int\0"	# DW_AT_name
+	.uleb128 0x7	# (DIE (0x83) DW_TAG_array_type)
+	.long	0x7c	# DW_AT_type
+	.long	0x93	# DW_AT_sibling
+	.uleb128 0x8	# (DIE (0x8c) DW_TAG_subrange_type)
+	.long	0x93	# DW_AT_type
+	.byte	0xff	# DW_AT_upper_bound
+	.byte	0	# end of children of DIE 0x83
+	.uleb128 0x9	# (DIE (0x93) DW_TAG_base_type)
+	.byte	0x8	# DW_AT_byte_size
+	.byte	0x7	# DW_AT_encoding
+	.long	.LASF0	# DW_AT_name: "sizetype"
+	.byte	0	# end of children of DIE 0xb
+	.section	.debug_abbrev,"",@progbits
+.Ldebug_abbrev0:
+	.uleb128 0x1	# (abbrev code)
+	.uleb128 0x11	# (TAG: DW_TAG_compile_unit)
+	.byte	0x1	# DW_children_yes
+	.uleb128 0x25	# (DW_AT_producer)
+	.uleb128 0xe	# (DW_FORM_strp)
+	.uleb128 0x13	# (DW_AT_language)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x3	# (DW_AT_name)
+	.uleb128 0xe	# (DW_FORM_strp)
+	.uleb128 0x1b	# (DW_AT_comp_dir)
+	.uleb128 0xe	# (DW_FORM_strp)
+	.uleb128 0x55	# (DW_AT_ranges)
+	.uleb128 0x17	# (DW_FORM_sec_offset)
+	.uleb128 0x11	# (DW_AT_low_pc)
+	.uleb128 0x1	# (DW_FORM_addr)
+	.uleb128 0x10	# (DW_AT_stmt_list)
+	.uleb128 0x17	# (DW_FORM_sec_offset)
+	.byte	0
+	.byte	0
+	.uleb128 0x2	# (abbrev code)
+	.uleb128 0x2e	# (TAG: DW_TAG_subprogram)
+	.byte	0x1	# DW_children_yes
+	.uleb128 0x3f	# (DW_AT_external)
+	.uleb128 0x19	# (DW_FORM_flag_present)
+	.uleb128 0x3	# (DW_AT_name)
+	.uleb128 0xe	# (DW_FORM_strp)
+	.uleb128 0x3a	# (DW_AT_decl_file)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x3b	# (DW_AT_decl_line)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x27	# (DW_AT_prototyped)
+	.uleb128 0x19	# (DW_FORM_flag_present)
+	.uleb128 0x49	# (DW_AT_type)
+	.uleb128 0x13	# (DW_FORM_ref4)
+	.uleb128 0x11	# (DW_AT_low_pc)
+	.uleb128 0x1	# (DW_FORM_addr)
+	.uleb128 0x12	# (DW_AT_high_pc)
+	.uleb128 0x7	# (DW_FORM_data8)
+	.uleb128 0x40	# (DW_AT_frame_base)
+	.uleb128 0x18	# (DW_FORM_exprloc)
+	.uleb128 0x2117	# (DW_AT_GNU_all_call_sites)
+	.uleb128 0x19	# (DW_FORM_flag_present)
+	.uleb128 0x1	# (DW_AT_sibling)
+	.uleb128 0x13	# (DW_FORM_ref4)
+	.byte	0
+	.byte	0
+	.uleb128 0x3	# (abbrev code)
+	.uleb128 0x13	# (TAG: DW_TAG_structure_type)
+	.byte	0x1	# DW_children_yes
+	.uleb128 0xb	# (DW_AT_byte_size)
+	.uleb128 0x5	# (DW_FORM_data2)
+	.uleb128 0x3a	# (DW_AT_decl_file)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x3b	# (DW_AT_decl_line)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x1	# (DW_AT_sibling)
+	.uleb128 0x13	# (DW_FORM_ref4)
+	.byte	0
+	.byte	0
+	.uleb128 0x4	# (abbrev code)
+	.uleb128 0xd	# (TAG: DW_TAG_member)
+	.byte	0	# DW_children_no
+	.uleb128 0x3	# (DW_AT_name)
+	.uleb128 0x8	# (DW_FORM_string)
+	.uleb128 0x3a	# (DW_AT_decl_file)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x3b	# (DW_AT_decl_line)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x49	# (DW_AT_type)
+	.uleb128 0x13	# (DW_FORM_ref4)
+	.uleb128 0x38	# (DW_AT_data_member_location)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.byte	0
+	.byte	0
+	.uleb128 0x5	# (abbrev code)
+	.uleb128 0x34	# (TAG: DW_TAG_variable)
+	.byte	0	# DW_children_no
+	.uleb128 0x3	# (DW_AT_name)
+	.uleb128 0x8	# (DW_FORM_string)
+	.uleb128 0x3a	# (DW_AT_decl_file)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x3b	# (DW_AT_decl_line)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x49	# (DW_AT_type)
+	.uleb128 0x13	# (DW_FORM_ref4)
+	.uleb128 0x2	# (DW_AT_location)
+	.uleb128 0x18	# (DW_FORM_exprloc)
+	.byte	0
+	.byte	0
+	.uleb128 0x6	# (abbrev code)
+	.uleb128 0x24	# (TAG: DW_TAG_base_type)
+	.byte	0	# DW_children_no
+	.uleb128 0xb	# (DW_AT_byte_size)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x3e	# (DW_AT_encoding)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x3	# (DW_AT_name)
+	.uleb128 0x8	# (DW_FORM_string)
+	.byte	0
+	.byte	0
+	.uleb128 0x7	# (abbrev code)
+	.uleb128 0x1	# (TAG: DW_TAG_array_type)
+	.byte	0x1	# DW_children_yes
+	.uleb128 0x49	# (DW_AT_type)
+	.uleb128 0x13	# (DW_FORM_ref4)
+	.uleb128 0x1	# (DW_AT_sibling)
+	.uleb128 0x13	# (DW_FORM_ref4)
+	.byte	0
+	.byte	0
+	.uleb128 0x8	# (abbrev code)
+	.uleb128 0x21	# (TAG: DW_TAG_subrange_type)
+	.byte	0	# DW_children_no
+	.uleb128 0x49	# (DW_AT_type)
+	.uleb128 0x13	# (DW_FORM_ref4)
+	.uleb128 0x2f	# (DW_AT_upper_bound)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.byte	0
+	.byte	0
+	.uleb128 0x9	# (abbrev code)
+	.uleb128 0x24	# (TAG: DW_TAG_base_type)
+	.byte	0	# DW_children_no
+	.uleb128 0xb	# (DW_AT_byte_size)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x3e	# (DW_AT_encoding)
+	.uleb128 0xb	# (DW_FORM_data1)
+	.uleb128 0x3	# (DW_AT_name)
+	.uleb128 0xe	# (DW_FORM_strp)
+	.byte	0
+	.byte	0
+	.byte	0
+	.section	.debug_aranges,"",@progbits
+	.long	0x2c	# Length of Address Ranges Info
+	.value	0x2	# DWARF Version
+	.long	.Ldebug_info0	# Offset of Compilation Unit Info
+	.byte	0x8	# Size of Address
+	.byte	0	# Size of Segment Descriptor
+	.value	0	# Pad to 16 byte boundary
+	.value	0
+	.quad	.LFB0	# Address
+	.quad	.LFE0-.LFB0	# Length
+	.quad	0
+	.quad	0
+	.section	.debug_ranges,"",@progbits
+.Ldebug_ranges0:
+	.quad	.LFB0	# Offset 0
+	.quad	.LFE0
+	.quad	0
+	.quad	0
+	.section	.debug_line,"",@progbits
+.Ldebug_line0:
+	.section	.debug_str,"MS",@progbits,1
+.LASF0:
+	.string	"sizetype"
+.LASF2:
+	.string	"gdb.arch/amd64-optimout-repeat.c"
+.LASF1:
+	.string	"GNU C 4.9.1 20140709 (prerelease) -mtune=generic -march=x86-64 -g -O2"
+.LASF3:
+	.string	""
+.LASF4:
+	.string	"main"
+	.ident	"GCC: (GNU) 4.9.1 20140709 (prerelease)"
+	.section	.note.GNU-stack,"",@progbits
diff --git a/gdb/testsuite/gdb.arch/amd64-optimout-repeat.c b/gdb/testsuite/gdb.arch/amd64-optimout-repeat.c
new file mode 100644
index 0000000..a32b6de
--- /dev/null
+++ b/gdb/testsuite/gdb.arch/amd64-optimout-repeat.c
@@ -0,0 +1,29 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2014 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+int
+main (void)
+{
+  struct
+    {
+      int i;
+      int xxx[0x100];
+    }
+  v = { 0 };
+
+  return v.i;
+}
diff --git a/gdb/testsuite/gdb.arch/amd64-optimout-repeat.exp b/gdb/testsuite/gdb.arch/amd64-optimout-repeat.exp
new file mode 100644
index 0000000..f3c93a4
--- /dev/null
+++ b/gdb/testsuite/gdb.arch/amd64-optimout-repeat.exp
@@ -0,0 +1,36 @@
+# Copyright (C) 2014 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+standard_testfile .S .c
+set opts {}
+
+if [info exists COMPILE] {
+    # make check RUNTESTFLAGS="gdb.arch/amd64-optimout-repeat.exp COMPILE=1"
+    set srcfile ${srcfile2}
+    lappend opts debug optimize=-O2
+} elseif { ![istarget x86_64-*-* ] || ![is_lp64_target] } {
+    verbose "Skipping amd64-optimout-repeat."
+    return
+}
+
+if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} $opts] } {
+    return -1
+}
+
+if ![runto_main] {
+    return -1
+}
+
+gdb_test "print v" { = {i = 0, xxx = {<optimized out> <repeats 256 times>}}}

Follow-Ups:
- Re: [patchv3] Fix crash on optimized-out entry data values
  - From: Yao Qi
- Re: [patchv3] Fix crash on optimized-out entry data values
  - From: Pedro Alves

References:
- [patchv2] Fix crash on optimized-out entry data values
  - From: Jan Kratochvil
- Re: [patchv2] Fix crash on optimized-out entry data values
  - From: Pedro Alves
- Re: [patchv2] Fix crash on optimized-out entry data values
  - From: Jan Kratochvil

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