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Diffstat (limited to 'gcc/config/avr/avr.h')
| -rw-r--r-- | gcc/config/avr/avr.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/gcc/config/avr/avr.h b/gcc/config/avr/avr.h index 47bb3fba43c..37fb3ed818a 100644 --- a/gcc/config/avr/avr.h +++ b/gcc/config/avr/avr.h @@ -296,6 +296,19 @@ enum reg_class { #define REGNO_REG_CLASS(R) avr_regno_reg_class(R) +/* The following macro defines cover classes for Integrated Register + Allocator. Cover classes is a set of non-intersected register + classes covering all hard registers used for register allocation + purpose. Any move between two registers of a cover class should be + cheaper than load or store of the registers. The macro value is + array of register classes with LIM_REG_CLASSES used as the end + marker. */ + +#define IRA_COVER_CLASSES \ +{ \ + GENERAL_REGS, LIM_REG_CLASSES \ +} + #define BASE_REG_CLASS (reload_completed ? BASE_POINTER_REGS : POINTER_REGS) #define INDEX_REG_CLASS NO_REGS |