https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101301
Martin Liška changed:
What|Removed |Added
Status|ASSIGNED|NEW
Assignee|marxin at gcc dot
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101301
--- Comment #11 from CVS Commits ---
The master branch has been updated by Martin Liska :
https://gcc.gnu.org/g:4fa25a7eb322f0a003c1eb15680c71ece345e01e
commit r13-4409-g4fa25a7eb322f0a003c1eb15680c71ece345e01e
Author: Martin Liska
Date: Mo
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101301
Martin Liška changed:
What|Removed |Added
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot
gnu.org
Last
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101301
--- Comment #9 from Segher Boessenkool ---
(In reply to Thomas Koenig from comment #8)
> (In reply to Segher Boessenkool from comment #7)
>
> > Yeah :-) Of course in your testing the nine named cases have the same
> > probability,
> > which i
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101301
--- Comment #8 from Thomas Koenig ---
(In reply to Segher Boessenkool from comment #7)
> Yeah :-) Of course in your testing the nine named cases have the same
> probability,
> which is not very true in practice (but is there any better guess p
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101301
--- Comment #7 from Segher Boessenkool ---
Assuming that you divide the "default" case into ten pieces of 0.01 each,
some slight corrections:
(In reply to Thomas Koenig from comment #6)
> int foo3 (int n)
> {
> if (__builtin_expect_with_proba
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101301
--- Comment #6 from Thomas Koenig ---
If I create a foo3 function with
int foo3 (int n)
{
if (__builtin_expect_with_probability (n >= 5, 1, 0.55))
{
if (__builtin_expect_with_probability (n >= 7, 1, 0.33/0.55))
{
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101301
--- Comment #5 from Segher Boessenkool ---
Looking at -fdump-tree-all-all, things are fine with "foo" until the
switchlower pass. Before that all nine switch cases and the default
case all had probability 0.10; after the switch conversion there
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101301
--- Comment #4 from Thomas Koenig ---
(In reply to Segher Boessenkool from comment #3)
> What CPU is in your Power system, and what -mcpu= did you compile with?
> What is the ABI you are using? (That last one doesn't seem to matter in
> this pa
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101301
--- Comment #3 from Segher Boessenkool ---
What CPU is in your Power system, and what -mcpu= did you compile with?
What is the ABI you are using? (That last one doesn't seem to matter in
this particular case, but :-) )
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101301
Thomas Koenig changed:
What|Removed |Added
CC||segher at gcc dot gnu.org
--- Comment #
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101301
--- Comment #1 from Thomas Koenig ---
Here's the assembly for the switch statement with -O3:
cmpl$5, %edi
je .L6
jle .L18
movl$8, %eax
cmpl$8, %edi
je .L1
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