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| author | Richard Henderson <rth@gcc.gnu.org> | 2000-07-28 10:46:18 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2000-07-28 10:46:18 -0700 |
| commit | 4b983fdc50c590dde021fae533d8c3745897fdae (patch) | |
| tree | c6bbf69024ca51b064647b9762f5100f294e8b2b /gcc/regclass.c | |
| parent | 777ba8d110978fc69481e5f50ebcca1fd39a8542 (diff) | |
| download | gcc-4b983fdc50c590dde021fae533d8c3745897fdae.zip gcc-4b983fdc50c590dde021fae533d8c3745897fdae.tar.gz gcc-4b983fdc50c590dde021fae533d8c3745897fdae.tar.bz2 | |
cse.c (canon_hash): Handle PRE_MODIFY/POST_MODIFY.
* cse.c (canon_hash): Handle PRE_MODIFY/POST_MODIFY.
(cse_insn): Likewise.
(addr_affects_sp_p): Likewise.
* expr.c (move_by_pieces): Likewise.
(clear_by_pieces): Likewise.
* gcse.c (oprs_unchanged_p): Likewise.
* haifa-sched.c (sched_analyze_2): Likewise.
* recog.c (offsettable_address_p): Likewise.
* regclass.c (record_address_regs): Likewise.
* reload.c (find_reusable_reload): Likewise.
(push_reload): Likewise.
(operands_match_p): Likewise.
(decompose): Likewise.
(find_reloads_address_1): Likewise.
(find_inc_amount): Likewise.
* reload1.c (elimination_effects): Likewise.
* resource.c (mark_set_resources): Likewise.
* flow.c (attempt_auto_inc): New function; mostly broken out
of find_auto_inc.
(find_auto_inc): Split into two functions and enhanced to
generate POST_MODIFY.
* rtl.def (PRE_MODIFY, POST_MODIFY): Adjust comment.
* rtl.h (count_all_occurrences): Declare.
(HAVE_{PRE,POST}_MODIFY_{DISP,REG}): Provide default of 0 if not
defined.
* rtlanal.c (count_all_occurrences): New function.
* tm.texi (HAVE_POST_MODIFY_DISP, HAVE_PRE_MODIFY_DISP,
HAVE_POST_MODIFY_REG, HAVE_PRE_MODIFY_REG): Document.
* config/ia64/ia64-protos.h (destination_operand): Declare.
* config/ia64/ia64.c (destination_operand): New function.
(ia64_print_operand): Handle POST_MODIFY.
(rtx_needs_barrier): Likewise.
* config/ia64/ia64.h (HAVE_POST_MODIFY_DISP): Define to 1.
(HAVE_POST_MODIFY_REG): Define to 1.
(MAX_REGS_PER_ADDRESS): Change to 2.
(GO_IF_LEGITIMATE_ADDRESS): Accept POST_MODIFY too.
(LEGITIMATE_ADDRESS_REG): New helper macro.
(LEGITIMATE_ADDRESS_DISP): Likewise.
(PREDICATE_CODES): Add entry for destination_operand.
* config/ia64/ia64.md (all mov patterns): Use destination_operand
predicate for operand 0.
From-SVN: r35321
Diffstat (limited to 'gcc/regclass.c')
| -rw-r--r-- | gcc/regclass.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/regclass.c b/gcc/regclass.c index eb909d1..4439857 100644 --- a/gcc/regclass.c +++ b/gcc/regclass.c @@ -1952,6 +1952,17 @@ record_address_regs (x, class, scale) } break; + /* Double the importance of a pseudo register that is incremented + or decremented, since it would take two extra insns + if it ends up in the wrong place. */ + case POST_MODIFY: + case PRE_MODIFY: + record_address_regs (XEXP (x, 0), BASE_REG_CLASS, 2 * scale); + if (REG_P (XEXP (XEXP (x, 1), 1))) + record_address_regs (XEXP (XEXP (x, 1), 1), + INDEX_REG_CLASS, 2 * scale); + break; + case POST_INC: case PRE_INC: case POST_DEC: |