http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49911
--- Comment #9 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-08-01
09:05:38 UTC ---
verifier patch that would catch at least computation results (but not loads):
Index: gcc/tree-cfg.c
===================================================================
--- gcc/tree-cfg.c (revision 176998)
+++ gcc/tree-cfg.c (working copy)
@@ -3241,6 +3314,16 @@ verify_gimple_assign_unary (gimple stmt)
return true;
}
+ if (INTEGRAL_TYPE_P (lhs_type)
+ && (!tree_int_cst_equal (TYPE_MIN_VALUE (lhs_type),
+ lower_bound_in_type (lhs_type, lhs_type))
+ || !tree_int_cst_equal (TYPE_MAX_VALUE (lhs_type),
+ upper_bound_in_type (lhs_type, lhs_type))))
+ {
+ error ("register with non-canonical bounds");
+ return true;
+ }
+
/* First handle conversions. */
switch (rhs_code)
{
@@ -3397,6 +3480,16 @@ verify_gimple_assign_binary (gimple stmt
return true;
}
+ if (INTEGRAL_TYPE_P (lhs_type)
+ && (!tree_int_cst_equal (TYPE_MIN_VALUE (lhs_type),
+ lower_bound_in_type (lhs_type, lhs_type))
+ || !tree_int_cst_equal (TYPE_MAX_VALUE (lhs_type),
+ upper_bound_in_type (lhs_type, lhs_type))))
+ {
+ error ("register with non-canonical bounds");
+ return true;
+ }
+
/* First handle operations that involve different types. */
switch (rhs_code)
{
shows that the IL after SRA is broken:
t.ii: In function 'void jsop_setelem(bool, int)':
t.ii:32:6: error: register with non-canonical bounds
D.1816_11 = (RegisterID) z_3(D);
t.ii:32:6: internal compiler error: verify_gimple failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
