On Wed, Jan 8, 2014 at 8:46 PM, Steven Bosscher wrote:
> On Wed, Jan 8, 2014 at 8:27 PM, Richard Sandiford wrote:
>> gcc/
>> PR rtl-optimization/59137
>> * reorg.c (steal_delay_list_from_target): Call update_block for
>> elided insns.
>> (steal_delay_list_from_fallt
On Wed, Jan 8, 2014 at 8:27 PM, Richard Sandiford wrote:
> gcc/
> PR rtl-optimization/59137
> * reorg.c (steal_delay_list_from_target): Call update_block for
> elided insns.
> (steal_delay_list_from_fallthrough, relax_delay_slots): Likewise.
>
> gcc/testsuite/
>
PR 59137 is another case where dbr_schedule gets confused about liveness.
We start out with:
A: $2 = x
B: if $4 == $2 goto L1 [REG_DEAD: $2]
C: if $4 < 0 goto L2
...
L1:
D: $2 = y
E: goto L3
L2:
F: $2 = x
G: goto L3
...
L3:
...
r
