On 17/11/20 02:12, Jeff Law wrote:
Removing all REG_EQUAL notes for regs that become dead anywhere
That's not what it does.
seems to just be a thinko? All pseudos are dead somewhere! (Yeah okay,
infinite loops, but other than that.)
Yea, but the code which wipes the notes probably has no
On 11/13/20 6:55 AM, Segher Boessenkool wrote:
> Hi guys,
>
> On Thu, Nov 12, 2020 at 09:10:14PM -0700, Jeff Law wrote:
>> On 11/12/20 7:02 PM, Xionghu Luo via Gcc wrote:
>>> The output shows "REQ_EQUAL r118:DI+0x66546b64" is deleted by
>>> df_remove_dead_eq_notes,
>>> but r120:DI is not
Hi guys,
On Thu, Nov 12, 2020 at 09:10:14PM -0700, Jeff Law wrote:
> On 11/12/20 7:02 PM, Xionghu Luo via Gcc wrote:
> > The output shows "REQ_EQUAL r118:DI+0x66546b64" is deleted by
> > df_remove_dead_eq_notes,
> > but r120:DI is not REG_DEAD here, so is it correct here to check insn use
> >
On 11/12/20 7:02 PM, Xionghu Luo via Gcc wrote:
> Hi all,
>
> In PR51505(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51505), Paolo Bonzini
> added the code to delete REG_EQUAL notes in df_remove_dead_eq_notes:
>
> gcc/df-problems.c:
> df_remove_dead_eq_notes (rtx_insn *insn, bitmap live)
> {
>
Hi all,
In PR51505(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51505), Paolo Bonzini
added the code to delete REG_EQUAL notes in df_remove_dead_eq_notes:
gcc/df-problems.c:
df_remove_dead_eq_notes (rtx_insn *insn, bitmap live)
{
...
case REG_EQUAL:
case REG_EQUIV:
{
