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Re: [PATCH][PR tree-optimization/64823] Handle threading through blocks with PHIs, but no statements V2


On February 16, 2015 10:11:07 PM CET, Jakub Jelinek <jakub@redhat.com> wrote:
>On Mon, Feb 16, 2015 at 02:00:32PM -0700, Jeff Law wrote:
>> --- a/gcc/tree-vrp.c
>> +++ b/gcc/tree-vrp.c
>> @@ -10176,13 +10176,20 @@ identify_jump_threads (void)
>>        /* We only care about blocks ending in a COND_EXPR.  While
>there
>>  	 may be some value in handling SWITCH_EXPR here, I doubt it's
>>  	 terribly important.  */
>> -      last = gsi_stmt (gsi_last_bb (bb));
>> +      last = gsi_stmt (gsi_last_nondebug_bb (bb));

And if the comment is correct then it should not even matter as the condition ends a basic block.

Richard.

>Isn't that just
>	last = last_stmt (bb);
>equivalent?
>
>	Jakub



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