--- Additional Comments From steven at gcc dot gnu dot org 2005-07-26
10:39 ---
I can reproduce this with the C test case from comment #24 on x86_64-linux
with -march=nocona. With -march=k8 that test case does _not_ abort.
--
What|Removed |Added
--- Additional Comments From steven at gcc dot gnu dot org 2005-07-26
10:43 ---
Well I'll be damned!
$ ./xgcc -B. t.c -O2 -march=nocona
$ ./a.out
Aborted
$ ./xgcc -B. t.c -O2 -march=nocona -da -fdump-tree-all
$ ./a.out
$
$ ./xgcc -B. t.c -O2 -march=nocona -S -da
$ mv t.s
--- Additional Comments From steven at gcc dot gnu dot org 2005-07-26
11:18 ---
My version of t.c:
===
void abort ();
typedef struct _Node
{
struct _Node *next, *prev;
} Node;
void __attribute__ ((noinline)) append (Node * q, Node *
--- Additional Comments From steven at gcc dot gnu dot org 2005-07-26
11:43 ---
Smaller test case:
==
void abort ();
typedef struct _Node
{
struct _Node *next, *prev;
} Node;
inline void
swap (Node ** a, Node ** b)
{
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-07-24
16:25 ---
Actually I take that back.
the tree dumps are different.
Hmm, maybe we are miscompiling more than just the testcase.
--
What|Removed |Added
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-07-24
16:33 ---
(In reply to comment #22)
Hmm, maybe we are miscompiling more than just the testcase.
Nope. Compiling for x86_64 from ppc-darwin, we get the same failure here.
--
--- Additional Comments From reichelt at gcc dot gnu dot org 2005-07-24
22:29 ---
Just another data point: The problem disappeared on mainline with
Dan's patch
http://gcc.gnu.org/ml/gcc-cvs/2005-06/msg01108.html
--
What|Removed |Added
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-07-24
22:32 ---
(In reply to comment #25)
Just another data point: The problem disappeared on mainline with
Dan's patch
Not according to my testing, it still fails on the mainline as of today.
--
--- Additional Comments From reichelt at gcc dot gnu dot org 2005-07-25
00:15 ---
Not according to my testing, it still fails on the mainline as of today.
Indeed, I have to add -march=pentium4 to trigger the bug, though.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22591
