ase
> I'm still kind of stuck.
>
> Gary
>
>
> From: Richard Biener
> Sent: Thursday, July 29, 2021 12:12 AM
> To: Gary Oblock
> Cc: gcc@gcc.gnu.org
> Subject: Re: A value number issue
>
> [EXTERNAL EMAIL NOTICE: This email origina
s that kind of trick work with SSA variable creation?
Thanks, I really appreciate your help even though in this case
I'm still kind of stuck.
Gary
From: Richard Biener
Sent: Thursday, July 29, 2021 12:12 AM
To: Gary Oblock
Cc: gcc@gcc.gnu.org
Subject:
e.reorg.reorder *.
So what did you change in GCC? If you did not change value-numbering
then you can reduce the testcase down and extract a GIMPLE frontend
testcase for VN (use -fdump-tree-all-gimple and massage the GIMPLE
dumped before the FRE/PRE pass that causes the issue)
> Gary
>
&
387
> (0299), {component_ref,mem_ref<0B>,addr_expr<&net>}@.MEM_387
> (0222), {abs_expr,red_cost_of_bea_42} (0134),
> {component_ref,mem_ref<0B>,addr_expr<&_reorg_base_var_node.reorg.reorder>}@.MEM_387
> (0306),
> {component_ref,mem_ref<0B>,a
xpr<&_reorg_base_var_node.reorg.reorder>}@.MEM_387
> (0299), {component_ref,mem_ref<0B>,addr_expr<&net>}@.MEM_387
> (0222), {abs_expr,red_cost_of_bea_42} (0134),
> {component_ref,mem_ref<0B>,addr_expr<&_reorg_base_var_node.reorg.reorder>}@.MEM_3
f (red_cost_of_bea_42 > 0)
goto ; [59.00%]
else
goto ; [41.00%]
[local count: 2609125]:
goto ; [100.00%]
[local count: 1813121]:
[local count: 4422246]:
# dedangled_867 = PHI
# dedangled_868 = PHI
if (dedangled_867 != dedangled_868)
goto ; [89.00%]
else
On Thu, Jul 22, 2021 at 8:06 AM Gary Oblock via Gcc wrote:
>
> I seem to be having a problem with the pre pass.
>
> When eliminate_dom_walker::eliminate_stmt is called with
> the gsi to "dedangled_864 = bea_43->tail;" which in turn
> calls eliminate_dom_walker::eliminate_avail op of dedangled_864.
I seem to be having a problem with the pre pass.
When eliminate_dom_walker::eliminate_stmt is called with
the gsi to "dedangled_864 = bea_43->tail;" which in turn
calls eliminate_dom_walker::eliminate_avail op of dedangled_864.
This gives VN_INFO (lhs)->valnum of _920. The _920 is not
associated w
