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| author | Jeff Law <law@gcc.gnu.org> | 1995-12-31 19:32:57 -0700 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1995-12-31 19:32:57 -0700 |
| commit | 6cad67d2d0789487217a2091c2f14d48f9e1ad6b (patch) | |
| tree | 6954fbd4d8694312315db4ec5b21e6a62873aec7 /gcc/regs.h | |
| parent | 6e81958a66749a62fdd4f50de26e52a10fa559da (diff) | |
| download | gcc-6cad67d2d0789487217a2091c2f14d48f9e1ad6b.zip gcc-6cad67d2d0789487217a2091c2f14d48f9e1ad6b.tar.gz gcc-6cad67d2d0789487217a2091c2f14d48f9e1ad6b.tar.bz2 | |
hard-reg-set.h (losing_caller_save_reg_set): Declare.
* hard-reg-set.h (losing_caller_save_reg_set): Declare.
* regclass.c (losing_caller_save_reg_set): Define.
(init_reg_sets_1): Initialize losing_caller_save_reg_set.
* global.c (find_reg): Avoid caller-saving registers in
LOSING_CALLER_SAVE_REGS if it's defined.
* local-alloc.c (find_free_reg): Avoid caller-saving registers
in losing_caller_save_reg_set.
(CLASS_LIKELY_SPILLED_P): Delete definition. Moved into regs.h.
* regs.h (CLASS_LIKELY_SPILLED_P): Define if not already defined.
From-SVN: r10926
Diffstat (limited to 'gcc/regs.h')
| -rw-r--r-- | gcc/regs.h | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -176,6 +176,12 @@ extern int caller_save_needed; #define CALLER_SAVE_PROFITABLE(REFS, CALLS) (4 * (CALLS) < (REFS)) #endif +/* On most machines a register class is likely to be spilled if it + only has one register. */ +#ifndef CLASS_LIKELY_SPILLED_P +#define CLASS_LIKELY_SPILLED_P(CLASS) (reg_class_size[(int) (CLASS)] == 1) +#endif + /* Allocated in local_alloc. */ /* A list of SCRATCH rtl allocated by local-alloc. */ |