diff options
Diffstat (limited to 'gcc/local-alloc.c')
| -rw-r--r-- | gcc/local-alloc.c | 16 |
1 files changed, 0 insertions, 16 deletions
diff --git a/gcc/local-alloc.c b/gcc/local-alloc.c index 85cb8af555b..0c7e2480edd 100644 --- a/gcc/local-alloc.c +++ b/gcc/local-alloc.c @@ -796,22 +796,6 @@ update_equiv_regs () note = find_reg_note (insn, REG_EQUAL, NULL_RTX); -#ifdef DONT_RECORD_EQUIVALENCE - /* Allow the target to reject promotions of some REG_EQUAL notes to - REG_EQUIV notes. - - In some cases this can improve register allocation if the existence - of the REG_EQUIV note is likely to increase the lifetime of a register - that is likely to be spilled. - - It may also be necessary if the target can't handle certain constant - expressions appearing randomly in insns, but for whatever reason - those expressions must be considered legitimate constant expressions - to prevent them from being forced into memory. */ - if (note && DONT_RECORD_EQUIVALENCE (note)) - note = NULL; -#endif - if (REG_N_SETS (regno) != 1 && (! note || ! function_invariant_p (XEXP (note, 0)) |