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

[Yao Qi]

On 07/11/2014 11:37 PM, Jan Kratochvil wrote:
> 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.

IWBN to generate .S files by dwarf assembler
(gdb.trace/entry-values.exp, for example).  Although
DW_OP_GNU_entry_value isn't supported in dwarf assembler, it shouldn't
be hard to handle it.

-- 
Yao (齐尧)