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author | Steven Bosscher <steven@gcc.gnu.org> | 2010-05-03 17:47:47 +0000 |
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committer | Steven Bosscher <steven@gcc.gnu.org> | 2010-05-03 17:47:47 +0000 |
commit | 42db504c2fb2b460e24ca0e73b8559fc33b3cf33 (patch) | |
tree | d6b919e11206907a280cef642b29741b31e6e929 /gcc/reload1.c | |
parent | d5ece0a1f59fd71e156bc58c8423eb7ea8d16480 (diff) | |
download | gcc-42db504c2fb2b460e24ca0e73b8559fc33b3cf33.zip gcc-42db504c2fb2b460e24ca0e73b8559fc33b3cf33.tar.gz gcc-42db504c2fb2b460e24ca0e73b8559fc33b3cf33.tar.bz2 |
tm.texi (defmac SMALL_REGISTER_CLASSES): Remove.
* doc/tm.texi (defmac SMALL_REGISTER_CLASSES): Remove.
(TARGET_SMALL_REGISTER_CLASSES_FOR_MODE_P): Add documentation,
based on the above, for new target hook.
* hooks.c (hook_bool_mode_true): New generic hook.
* hooks.h (hook_bool_mode_true): Add prototype.
* target.h (struct gcc_target): Add small_register_classes_for_mode_p
target hook.
* target-def.h (TARGET_SMALL_REGISTER_CLASSES_FOR_MODE_P): New default
target hook, set to hook_bool_mode_false.
* regs.h: Remove default definition of SMALL_REGISTER_CLASSES.
* reload.c (push_secondary_reload): Replace SMALL_REGISTER_CLASSES
with targetm.small_register_classes_for_mode_p.
(find_reusable_reload): Likewise.
(combine_reloads): Likewise.
* reload1.c (reload_as_needed): Likewise.
* cse.c (approx_reg_cost_1, hash_rtx_cb): Likewise.
* ifcvt.c (noce_process_if_block, check_cond_move_block,
dead_or_predicable): Likewise.
* regmove.c (optimize_reg_copy_1): Likewise.
* calls.c (prepare_call_address): Likewise.
(precompute_register_parameters): Likewise.
* config/sh/sh.h: Replace SMALL_REGISTER_CLASSES with new target
hook definition.
* config/sh/sh.c (sh_small_register_classes_for_mode_p): Add
implementation of the hook that considers all register classes
small except for SH64.
(sh_override_options): Use the new hook.
* config/sh/sh-protos.h (sh_small_register_classes_for_mode_p):
Add prototype.
* config/arm/arm.h: Replace SMALL_REGISTER_CLASSES with new target
hook definition.
* config/arm/arm.c (arm_small_register_classes_for_mode_p): Add
implementation of the hook that considers all register classes
small for THUMB1.
* config/arm/arm-protos.h (arm_small_register_classes_for_mode_p):
Add prototype.
* config/mips/mips.h: Replace SMALL_REGISTER_CLASSES with new target
hook definition.
* config/mips/mips.c (mips_small_register_classes_for_mode_p): Add
implementation of the hook that considers all register classes
small for MIPS16.
* config/mips/mips-protos.h (mips_small_register_classes_for_mode_p):
Add prototype.
* config/i386/i386.h: Replace SMALL_REGISTER_CLASSES with new target
hook definition.
* config/m32c/m32c.h: Likewise.
* config/pdp11/pdp11.h: Likewise.
* config/avr/avr.h: Likewise.
* config/xtensa/xtensa.h: Likewise.
* config/m68hc11/m68hc11.h: Likewise.
* config/mn10300/mn10300.h: Likewise.
* config/mcore/mcore.h: Likewise.
* config/h8300/h8300.h: Likewise.
* config/bfin/bfin.h: Likewise.
* config/iq2000/iq2000.h: Remove SMALL_REGISTER_CLASSES definition.
* config/rx/rx.h: Remove SMALL_REGISTER_CLASSES definition.
From-SVN: r158997
Diffstat (limited to 'gcc/reload1.c')
-rw-r--r-- | gcc/reload1.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/gcc/reload1.c b/gcc/reload1.c index bd590cb..ce0b602 100644 --- a/gcc/reload1.c +++ b/gcc/reload1.c @@ -4281,7 +4281,7 @@ reload_as_needed (int live_known) /* Merge any reloads that we didn't combine for fear of increasing the number of spill registers needed but now discover can be safely merged. */ - if (SMALL_REGISTER_CLASSES) + if (targetm.small_register_classes_for_mode_p (VOIDmode)) merge_assigned_reloads (insn); /* Generate the insns to reload operands into or out of @@ -6667,10 +6667,11 @@ deallocate_reload_reg (int r) reload_spill_index[r] = -1; } -/* If SMALL_REGISTER_CLASSES is nonzero, we may not have merged two - reloads of the same item for fear that we might not have enough reload - registers. However, normally they will get the same reload register - and hence actually need not be loaded twice. +/* If the small_register_classes_for_mode_p target hook returns true for + some machine modes, we may not have merged two reloads of the same item + for fear that we might not have enough reload registers. However, + normally they will get the same reload register and hence actually need + not be loaded twice. Here we check for the most common case of this phenomenon: when we have a number of reloads for the same object, each of which were allocated |