[PATCH] PR81747, ICE in operator[]

[Alan Modra]

Ping?

On Wed, Aug 09, 2017 at 08:58:31PM +0930, Alan Modra wrote:
> 	PR rtl-optimization/81747
> 	* cse.c (cse_extended_basic_block): Don't attempt to record
> 	equivalences for degenerate conditional jumps that branch
> 	to their fall-through.
> 
> diff --git a/gcc/cse.c b/gcc/cse.c
> index 6a968d1..85be372 100644
> --- a/gcc/cse.c
> +++ b/gcc/cse.c
> @@ -6640,6 +6640,7 @@ cse_extended_basic_block (struct cse_basic_block_data *ebb_data)
>  	 equivalences due to the condition being tested.  */
>        insn = BB_END (bb);
>        if (path_entry < path_size - 1
> +	  && EDGE_COUNT (bb->succs) == 2
>  	  && JUMP_P (insn)
>  	  && single_set (insn)
>  	  && any_condjump_p (insn))

-- 
Alan Modra
Australia Development Lab, IBM