--- Comment #6 from pinskia at gcc dot gnu dot org 2006-01-19 16:06 ---
Fixed by:
2006-01-09 Jeff Law <[EMAIL PROTECTED]>
* tree-ssa-dom.c (simplify_cond_and_lookup_avail_expr): Remove
code to propagate the RHS of a cast into COND_EXPR_COND. Remove
now unused
--- Comment #5 from pinskia at gcc dot gnu dot org 2005-10-24 03:19 ---
This is fixed in the simplify-dom-branch.
See: http://gcc.gnu.org/ml/gcc-cvs/2005-10/msg00830.html
--
pinskia at gcc dot gnu dot org changed:
What|Removed |Added
--
--- Additional Comments From kazu at cs dot umass dot edu 2005-05-21 17:01
---
(In reply to comment #2)
> There is a reason why forwprop does not do this, the SSA_NAME is used twice.
If we run forwprop
> before FRE, it will catch it in this
We are interested in the number of immediate
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-05-21
15:01 ---
Confirmed, here is a testcase which makes sure that we don't have to worry
about the one use property
of forwprop:
enum tree_code {
AAA,
BBB,
CCC
};
struct tree_common {
enum tree_code code : 8;
}
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-05-21
12:38 ---
There is a reason why forwprop does not do this, the SSA_NAME is used twice.
If we run forwprop
before FRE, it will catch it in this
See PR 19703 for a case where DOM messes up catching something like th
--- Additional Comments From kazu at cs dot umass dot edu 2005-05-21 09:45
---
The DOM's optimization comes from find_equivalent_equality_comparison,
which makes a COND_EXPR absorb a narrowing cast.
We could port this to tree-ssa-forwprop.c.
--
http://gcc.gnu.org/bugzilla/show_bug.c
