diff options
| -rw-r--r-- | gcc/config/alpha/alpha.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/config/alpha/alpha.h b/gcc/config/alpha/alpha.h index d9731a8..3caf7cc 100644 --- a/gcc/config/alpha/alpha.h +++ b/gcc/config/alpha/alpha.h @@ -584,6 +584,11 @@ enum reg_class { NO_REGS, GENERAL_REGS, FLOAT_REGS, ALL_REGS, #define CLASS_MAX_NREGS(CLASS, MODE) \ ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) +/* If defined, gives a class of registers that cannot be used as the + operand of a SUBREG that changes the size of the object. */ + +#define CLASS_CANNOT_CHANGE_SIZE FLOAT_REGS + /* Define the cost of moving between registers of various classes. Moving between FLOAT_REGS and anything else except float regs is expensive. In fact, we make it quite expensive because we really don't want to |