https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70747
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2016-04-21
Component|c |middle-end
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot
gnu.org
Target Milestone|--- |6.0
Summary|ICE on valid code on |[6/7 Regression] ICE on
|x86_64-linux-gnu: |valid code on
|verify_gimple failed |x86_64-linux-gnu:
| |verify_gimple failed
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
The GENERIC looks like
;; Function fn1 (null)
;; enabled by -tree-original
{
a = (int *) __builtin_malloc (8);
b = 0, 0;
}
which is already odd. fold produces this via
if (TREE_CODE_CLASS (code) == tcc_binary
|| TREE_CODE_CLASS (code) == tcc_comparison)
{
...
if (TREE_CODE (arg1) == COMPOUND_EXPR
&& reorder_operands_p (arg0, TREE_OPERAND (arg1, 0)))
{
tem = fold_build2_loc (loc, code, type, op0,
fold_convert_loc (loc, TREE_TYPE (op1),
TREE_OPERAND (arg1, 1)));
return build2_loc (loc, COMPOUND_EXPR, type, TREE_OPERAND (arg1, 0),
tem);
}
and the issue is that type is int while the comparison folding producing tem
returns a bool via fold_comparison:
8684 switch (code)
8685 {
8686 case EQ_EXPR:
8687 case LE_EXPR:
8688 case LT_EXPR:
8689 return boolean_false_node;
