------- Comment #2 from ubizjak at gmail dot com 2008-05-16 08:35 -------
It is actually a target issue. SECONDARY_MEMORY_NEEDED_MODE should be defined
to handle this. From reload.c:
rtx
get_secondary_mem (rtx x ATTRIBUTE_UNUSED, enum machine_mode mode,
int opnum, enum reload_type type)
{
rtx loc;
int mem_valid;
/* By default, if MODE is narrower than a word, widen it to a word.
This is required because most machines that require these memory
locations do not support short load and stores from all registers
(e.g., FP registers). */
#ifdef SECONDARY_MEMORY_NEEDED_MODE
mode = SECONDARY_MEMORY_NEEDED_MODE (mode);
#else
if (GET_MODE_BITSIZE (mode) < BITS_PER_WORD && INTEGRAL_MODE_P (mode))
mode = mode_for_size (BITS_PER_WORD, GET_MODE_CLASS (mode), 0);
#endif
--
ubizjak at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |ubizjak at gmail dot com
|dot org |
Status|UNCONFIRMED |ASSIGNED
Component|rtl-optimization |target
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2008-05-16 08:35:28
date| |
Summary|Reload chooses too wide mode|Reload chooses too wide mode
|for reg->mem->reg reload |for reg->mem->xmmreg reload
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36246
