On Tue, Oct 16, 2012 at 11:39 AM, Eric Botcazou wrote:
>> As I'm not sure how to best do that I suggest we do a more proper RTL
>> DSE hack by adding a 'libcall-call-escape'-set which we can add to
>> instead of calling mark_addressable this late. We need to add all
>> partitions of a decl here,
> As I'm not sure how to best do that I suggest we do a more proper RTL
> DSE hack by adding a 'libcall-call-escape'-set which we can add to
> instead of calling mark_addressable this late. We need to add all
> partitions of a decl here, of course, and we need to query it from
> can_escape.
That
On Mon, Oct 15, 2012 at 12:43 PM, Eric Botcazou wrote:
>> Where is mark_addressable called? It's wrong (and generally impossible) to
>> do that late.
>
> In expr.c:emit_block_move_hints. It's one of the calls added to support the
> enhanced DSE last year, there are others in calls.c for example.
> Where is mark_addressable called? It's wrong (and generally impossible) to
> do that late.
In expr.c:emit_block_move_hints. It's one of the calls added to support the
enhanced DSE last year, there are others in calls.c for example.
> If you only have memcpy then escaped will be empty. fixin
On Mon, Oct 15, 2012 at 12:00 PM, Eric Botcazou wrote:
>> Hmm. I think this points to an issue with update_alias_info_with_stack_vars
>> instead. That is, this function should have already cared for handling
>> this case where two decls have their stack slot shared.
>
> The problem here is that
> Hmm. I think this points to an issue with update_alias_info_with_stack_vars
> instead. That is, this function should have already cared for handling
> this case where two decls have their stack slot shared.
The problem here is that mark_addressable is called _after_ the function is
run. IOW,
On Sun, Oct 14, 2012 at 10:47 PM, Eric Botcazou wrote:
> Hi,
>
> This is the execution failure of gfortran.dg/array_constructor_4.f90 in 64-bit
> mode on SPARC/Solaris at -O3. The dse2 dump for the reduced testcase reads:
>
> dse: local deletions = 0, global deletions = 1, spill deletions = 0
> s
Hi,
This is the execution failure of gfortran.dg/array_constructor_4.f90 in 64-bit
mode on SPARC/Solaris at -O3. The dse2 dump for the reduced testcase reads:
dse: local deletions = 0, global deletions = 1, spill deletions = 0
starting the processing of deferred insns
deleting insn with uid = 25
