diff options
Diffstat (limited to 'gcc/reload.c')
| -rw-r--r-- | gcc/reload.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/reload.c b/gcc/reload.c index 8bd68c51bf5..13dd25ed061 100644 --- a/gcc/reload.c +++ b/gcc/reload.c @@ -104,6 +104,7 @@ a register with any other reload. */ #include "output.h" #include "function.h" #include "toplev.h" +#include "target.h" #ifndef REGNO_MODE_OK_FOR_BASE_P #define REGNO_MODE_OK_FOR_BASE_P(REGNO, MODE) REGNO_OK_FOR_BASE_P (REGNO) @@ -3369,6 +3370,11 @@ find_reloads (rtx insn, int replace, int ind_levels, int live_known, const_to_mem = 1; if (this_alternative[i] != (int) NO_REGS) losers++; + + /* If constant pool symbols are not valid addresses, + count an extra reload for the address. */ + if (!targetm.direct_pool_load_p (operand_mode[i])) + losers++; } /* If we can't reload this value at all, reject this @@ -3394,6 +3400,21 @@ find_reloads (rtx insn, int replace, int ind_levels, int live_known, && ! const_to_mem) bad = 1; +#ifdef SECONDARY_MEMORY_NEEDED + /* If this alternative would use memory to move a value + between registers, it would need two reloads, one for + the load and one for the store. Account for the extra + reload here. */ + if (GET_CODE (operand) == REG + && REGNO (operand) < FIRST_PSEUDO_REGISTER + && this_alternative[i] != NO_REGS + && (SECONDARY_MEMORY_NEEDED + (this_alternative[i], + REGNO_REG_CLASS (REGNO (operand)), + GET_MODE (operand)))) + losers++; +#endif + /* We prefer to reload pseudos over reloading other things, since such reloads may be able to be eliminated later. If we are reloading a SCRATCH, we won't be generating any |