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| author | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1999-01-06 21:44:21 +0000 |
|---|---|---|
| committer | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1999-01-06 21:44:21 +0000 |
| commit | 9efdc864865caf007d9100390961f3eb96c2f29d (patch) | |
| tree | 54bfc1fe6771f19edc91548cfe23d42e3ec4848a /gcc/local-alloc.c | |
| parent | 4fbc2ab915a74783c763a6ac83c86f5fb23f21d0 (diff) | |
| download | gcc-9efdc864865caf007d9100390961f3eb96c2f29d.tar.gz | |
* pa.h (DONT_RECORD_EQUIVALENCE): Kill.
* local-alloc.c (update_equiv_regs): Corresponding changes.
* tm.texi (DONT_RECORD_EQUIVALENCE): Kill.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@24541 138bc75d-0d04-0410-961f-82ee72b054a4
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)) |