https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78625
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |aldyh at gcc dot gnu.org
Component|rtl-optimization |tree-optimization
Target Milestone|--- |7.0
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
#2 0x0000000001171bdf in pred_neg_p (x1=..., x2=...)
at /space/rguenther/src/svn/trunk/gcc/tree-ssa-uninit.c:1488
1488 c2 = invert_tree_comparison (x2.cond_code, false);
(gdb) l
1483 || !operand_equal_p (x1.pred_rhs, x2.pred_rhs, 0))
1484 return false;
1485
1486 c1 = x1.cond_code;
1487 if (x1.invert == x2.invert)
1488 c2 = invert_tree_comparison (x2.cond_code, false);
x2.cond_code is BIT_AND_EXPR. Sth like
Index: gcc/tree-ssa-uninit.c
===================================================================
--- gcc/tree-ssa-uninit.c (revision 243100)
+++ gcc/tree-ssa-uninit.c (working copy)
@@ -1485,7 +1485,12 @@ pred_neg_p (pred_info x1, pred_info x2)
c1 = x1.cond_code;
if (x1.invert == x2.invert)
- c2 = invert_tree_comparison (x2.cond_code, false);
+ {
+ if (TREE_CODE_CLASS (x2.cond_code) == tcc_comparison)
+ c2 = invert_tree_comparison (x2.cond_code, false);
+ else
+ return false;
+ }
else
c2 = x2.cond_code;
might fix it.
