>
>
> decide_alg is being called from ix86_expand_movmem, from
> expand_builtin_memcpy, for the call at line 61 of go-append.c.
> __builtin_memcpy (n, a.__values, a.__count * element_size);
>
> I'm continuing to look.
Indeed it is problem of this patch - the issue is that generic64 had
dummy 32bit alg entries (those should not cause infinite loop, I will
fix that too)
I am testing:
Index: i386.c
===================================================================
--- i386.c (revision 202741)
+++ i386.c (working copy)
@@ -1648,11 +1648,13 @@ struct processor_costs slm_cost = {
and btver1 (and newer chips). */
static stringop_algs generic_memcpy[2] = {
- DUMMY_STRINGOP_ALGS,
+ {libcall, {{32, loop, false}, {8192, rep_prefix_4_byte, false},
+ {-1, libcall, false}}},
{libcall, {{32, loop, false}, {8192, rep_prefix_8_byte, false},
{-1, libcall, false}}}};
static stringop_algs generic_memset[2] = {
- DUMMY_STRINGOP_ALGS,
+ {libcall, {{32, loop, false}, {8192, rep_prefix_4_byte, false},
+ {-1, libcall, false}}},
{libcall, {{32, loop, false}, {8192, rep_prefix_8_byte, false},
{-1, libcall, false}}}};
static const
>
> Ian
