diff options
| author | Richard Kenner <kenner@gcc.gnu.org> | 1994-08-07 08:54:28 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1994-08-07 08:54:28 -0400 |
| commit | c31dfe4dc6ff068e92f2a5a65f528e5066e1f41c (patch) | |
| tree | 07ea4a5ead4bde466bce3b22be4a164fe8d9380c /gcc | |
| parent | 59e2c378c2f9319e9dea14b09a9d3cdd29d2c0cc (diff) | |
| download | gcc-c31dfe4dc6ff068e92f2a5a65f528e5066e1f41c.zip gcc-c31dfe4dc6ff068e92f2a5a65f528e5066e1f41c.tar.gz gcc-c31dfe4dc6ff068e92f2a5a65f528e5066e1f41c.tar.bz2 | |
(CLASS_CANNOT_CHANGE_SIZE): New macro.
From-SVN: r7870
Diffstat (limited to 'gcc')
| -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 |