------- Comment #11 from steven at gcc dot gnu dot org 2008-02-03 13:25 -------
My RTL fu is not sufficient to determine whether the following one-liner patch
is DTRT. Eric, could you have a look at this, please?
Index: combine.c
===================================================================
--- combine.c (revision 132078)
+++ combine.c (working copy)
@@ -5393,9 +5393,10 @@
/* Look for cases where we have (abs x) or (neg (abs X)). */
if (GET_MODE_CLASS (mode) == MODE_INT
+ && comparison_p
+ && XEXP (cond, 1) == const0_rtx
&& GET_CODE (false_rtx) == NEG
&& rtx_equal_p (true_rtx, XEXP (false_rtx, 0))
- && comparison_p
&& rtx_equal_p (true_rtx, XEXP (cond, 0))
&& ! side_effects_p (true_rtx))
switch (true_code)
--
steven at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ebotcazou at gcc dot gnu dot
| |org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34627
