--- Comment #4 from steven at gcc dot gnu dot org 2008-12-01 22:12 ---
davidxl, my latest patch to bug 23286 (tree-hoist_v3.diff) makes PRE in
tree-ssa-pre.c code-size aware. I have tested this with CSiBE on
mips-unknown-elf.
Without the patch, code size at -Os with PRE enabled is ~17%
--- Comment #3 from davidxl at gcc dot gnu dot org 2008-11-22 00:35 ---
(In reply to comment #2)
> (In reply to comment #0)
> > For this function:
> > int test (int a, int b, int c, int g)
> > {
> > int d, e;
> > if (a)
> > d = b * c;
> > else
> > d = b - c;
> > e = b * c
--- Comment #2 from dberlin at gcc dot gnu dot org 2008-11-21 16:55 ---
(In reply to comment #0)
> For this function:
> int test (int a, int b, int c, int g)
> {
> int d, e;
> if (a)
> d = b * c;
> else
> d = b - c;
> e = b * c + g;
> return d + e;
> }
>
> the multiply
--- Comment #1 from steven at gcc dot gnu dot org 2008-11-21 06:41 ---
*** This bug has been marked as a duplicate of 23286 ***
--
steven at gcc dot gnu dot org changed:
What|Removed |Added
