--- Comment #7 from irar at il dot ibm dot com 2010-03-28 18:22 ---
(In reply to comment #5)
> When defining the missing function like this:
>
> static inline int mid_pred(int a, int b, int c)
> {
> int t= (a-b)&((a-b)>>31);
> a-=t;
> b+=t;
> b-= (b-c)&((b-c)>>31);
>
--- Comment #6 from irar at il dot ibm dot com 2010-03-28 18:05 ---
(In reply to comment #4)
> What about fixing the diagnostic message like this:
>
It would be nice to do the same for SLP (compute_data_dependences_for_bb) for
completeness.
Thanks,
Ira
> diff --git a/gcc/tree-vect-da
--- Comment #5 from spop at gcc dot gnu dot org 2010-03-28 16:35 ---
When defining the missing function like this:
static inline int mid_pred(int a, int b, int c)
{
int t= (a-b)&((a-b)>>31);
a-=t;
b+=t;
b-= (b-c)&((b-c)>>31);
b+= (a-b)&((a-b)>>31);
return b;
}
--- Comment #4 from spop at gcc dot gnu dot org 2010-03-28 16:28 ---
What about fixing the diagnostic message like this:
diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c
index 37ae9b5..44248b3 100644
--- a/gcc/tree-vect-data-refs.c
+++ b/gcc/tree-vect-data-refs.c
@@ -1
--- Comment #3 from irar at il dot ibm dot com 2010-03-28 11:07 ---
(In reply to comment #1)
> hadamard8_diff.c:44: note: not vectorized: unhandled data-ref
There is a function call in this loop as well.
> hadamard8_diff.c:26: note: not vectorized: data ref analysis failed D.2771_12
--- Comment #2 from irar at il dot ibm dot com 2010-03-28 10:58 ---
(In reply to comment #0)
> sub_hfyu_median_prediction.c:18: note: not vectorized: unhandled data-ref
>
> Looking with GDB at it, I get:
> (gdb) p debug_data_references (datarefs)
> (Data Ref:
> stmt: D.2736_16 = *D
--
rguenth at gcc dot gnu dot org changed:
What|Removed |Added
CC||rguenth at gcc dot gnu dot
|
--- Comment #1 from spop at gcc dot gnu dot org 2010-03-18 22:04 ---
Also note that a similar problem occurs for hadamard8:
gcc-4.5 -c hadamard8.c -O3 -ffast-math -ftree-vectorizer-verbose=7 -msse2
[...]
hadamard8_diff.c:44: note: not vectorized: unhandled data-ref
hadamard8_diff.c:26:
