OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

cris.c (cris_preferred_reload_class): New function.

Browse Source 
* config/cris/cris.c (cris_preferred_reload_class): New function.
	(TARGET_PREFERRED_RELOAD_CLASS): Define.
	* config/cris/cris.h (PREFERRED_RELOAD_CLASS): Remove.

From-SVN: r179761
This commit is contained in:
Anatoly Sokolov 2011-10-10 20:39:26 +04:00 committed by Anatoly Sokolov
parent 917e14f3d2
commit 45dbdfd482
3 changed files with 36 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2011-10-10 Anatoly Sokolov <aesok@post.ru>
* config/cris/cris.c (cris_preferred_reload_class): New function.
(TARGET_PREFERRED_RELOAD_CLASS): Define.
* config/cris/cris.h (PREFERRED_RELOAD_CLASS): Remove.
2011-10-10 Georg-Johann Lay <avr@gjlay.de>
* config/avr/avr.md (*tablejump_rjmp): Change insn condition to

30
gcc/config/cris/cris.c
View File

@ -123,6 +123,8 @@ static void cris_asm_output_mi_thunk
static void cris_file_start (void);
static void cris_init_libfuncs (void);
static reg_class_t cris_preferred_reload_class (rtx, reg_class_t);
static int cris_register_move_cost (enum machine_mode, reg_class_t, reg_class_t);
static int cris_memory_move_cost (enum machine_mode, reg_class_t, bool);
static bool cris_rtx_costs (rtx, int, int, int, int *, bool);
@ -198,6 +200,9 @@ int cris_cpu_version = CRIS_DEFAULT_CPU_VERSION;
#undef TARGET_INIT_LIBFUNCS
#define TARGET_INIT_LIBFUNCS cris_init_libfuncs
#undef TARGET_PREFERRED_RELOAD_CLASS
#define TARGET_PREFERRED_RELOAD_CLASS cris_preferred_reload_class
#undef TARGET_REGISTER_MOVE_COST
#define TARGET_REGISTER_MOVE_COST cris_register_move_cost
#undef TARGET_MEMORY_MOVE_COST
@ -1342,6 +1347,31 @@ cris_reload_address_legitimized (rtx x,
return false;
}
/* Worker function for TARGET_PREFERRED_RELOAD_CLASS.
It seems like gcc (2.7.2 and 2.9x of 2000-03-22) may send "NO_REGS" as
the class for a constant (testcase: __Mul in arit.c). To avoid forcing
out a constant into the constant pool, we will trap this case and
return something a bit more sane. FIXME: Check if this is a bug.
Beware that we must not "override" classes that can be specified as
constraint letters, or else asm operands using them will fail when
they need to be reloaded. FIXME: Investigate whether that constitutes
a bug. */
static reg_class_t
cris_preferred_reload_class (rtx x ATTRIBUTE_UNUSED, reg_class_t rclass)
{
if (rclass != ACR_REGS
&& rclass != MOF_REGS
&& rclass != SRP_REGS
&& rclass != CC0_REGS
&& rclass != SPECIAL_REGS)
return GENERAL_REGS;
return rclass;
}
/* Worker function for TARGET_REGISTER_MOVE_COST. */
static int

16
gcc/config/cris/cris.h
View File

@ -583,22 +583,6 @@ enum reg_class
/* See REGNO_OK_FOR_BASE_P. */
#define REGNO_OK_FOR_INDEX_P(REGNO) REGNO_OK_FOR_BASE_P(REGNO)
/* It seems like gcc (2.7.2 and 2.9x of 2000-03-22) may send "NO_REGS" as
the class for a constant (testcase: __Mul in arit.c). To avoid forcing
out a constant into the constant pool, we will trap this case and
return something a bit more sane. FIXME: Check if this is a bug.
Beware that we must not "override" classes that can be specified as
constraint letters, or else asm operands using them will fail when
they need to be reloaded. FIXME: Investigate whether that constitutes
a bug. */
#define PREFERRED_RELOAD_CLASS(X, CLASS) \
((CLASS) != ACR_REGS \
&& (CLASS) != MOF_REGS \
&& (CLASS) != SRP_REGS \
&& (CLASS) != CC0_REGS \
&& (CLASS) != SPECIAL_REGS \
? GENERAL_REGS : (CLASS))
/* We can't move special registers to and from memory in smaller than
word_mode. We also can't move between special registers. Luckily,
-1, as returned by true_regnum for non-sub/registers, is valid as a