On 11/25/2012 11:30 AM, Richard Sandiford wrote:
FWIW, the vast majority of condjumps have a REG_BR_PROB note so the
part of mostly_true_jump that handles the jumps without a REG_BR_PROB
note is itself a rare_destination :-) GCC is very careful about
preserving the notes. Perhaps all that code sh
Steven Bosscher writes:
> On Sun, Nov 25, 2012 at 6:13 PM, Richard Sandiford wrote:
>> Steven Bosscher writes:
>>> Hello,
>>>
>>> reorg.c:rare_destination() tries to determine whether a given insn is
>>> a likely destination of a branch. To make this determination, it walks
>>> the insns chain fro
On Sun, Nov 25, 2012 at 6:13 PM, Richard Sandiford wrote:
> Steven Bosscher writes:
>> Hello,
>>
>> reorg.c:rare_destination() tries to determine whether a given insn is
>> a likely destination of a branch. To make this determination, it walks
>> the insns chain from insn and stops at barriers, lab
Steven Bosscher writes:
> Hello,
>
> reorg.c:rare_destination() tries to determine whether a given insn is
> a likely destination of a branch. To make this determination, it walks
> the insns chain from insn and stops at barriers, labels, return insns,
> or if more than 10 jumps have been followed
Hello,
reorg.c:rare_destination() tries to determine whether a given insn is
a likely destination of a branch. To make this determination, it walks
the insns chain from insn and stops at barriers, labels, return insns,
or if more than 10 jumps have been followed.
The function is supposed to retur
