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| author | Richard Henderson <rth@cygnus.com> | 2000-06-13 14:47:44 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2000-06-13 14:47:44 -0700 |
| commit | 02188693ed5ff368a8c4340d449baf07c87812ec (patch) | |
| tree | 18a58d10aaf4181b83524ed496b484df5ceed88e /gcc/flow.c | |
| parent | d8058091121489b75926656e25d50e01ad1e46db (diff) | |
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combine.c (subst): Use CLASS_CANNOT_CHANGE_MODE and CLASS_CANNOT_CHANGE_MODE_P instead of...
* combine.c (subst): Use CLASS_CANNOT_CHANGE_MODE and
CLASS_CANNOT_CHANGE_MODE_P instead of CLASS_CANNOT_CHANGE_SIZE
and hard-coded tests.
(simplify_set): Likewise.
(gen_lowpart_for_combine): Likewise.
* emit-rtl.c (gen_lowpart_common): Likewise.
* global.c (find_reg): Likewise.
* local-alloc.c (find_free_reg): Likewise.
* recog.c (register_operand): Likewise.
* regclass.c (init_reg_sets_1): Likewise.
(record_operand_costs, regclass): Likewise.
* reload.c (push_reload): Likewise.
* reload1.c (choose_reload_regs): Likewise.
* flow.c (mark_used_regs): Conditionally set REG_CHANGES_MODE.
* local-alloc.c (struct qty): Rename changes_size to changes_mode.
Update all references.
* regs.h (struct reg_info_def): Likewise.
(REG_CHANGES_MODE): Rename from REG_CHANGES_SIZE.
* tm.texi (CLASS_CANNOT_CHANGE_MODE): Document.
(CLASS_CANNOT_CHANGE_MODE_P): Likewise.
* config/alpha/alpha.h (CLASS_CANNOT_CHANGE_MODE): Rename.
(CLASS_CANNOT_CHANGE_MODE_P): New.
* config/mips/mips.h: Likewise.
* config/pa/pa32-regs.h: Likewise.
* config/pa/pa64-regs.h: Likewise.
* config/rs6000/rs6000.h: Likewise.
* config/sh/sh.h: Likewise.
* config/ia64/ia64.h (CLASS_CANNOT_CHANGE_MODE): New.
(CLASS_CANNOT_CHANGE_MODE_P): New.
* config/avr/avr.h (CLASS_CANNOT_CHANGE_SIZE): Remove dead code.
* config/d30v/d30v.h: Likewise.
From-SVN: r34526
Diffstat (limited to 'gcc/flow.c')
| -rw-r--r-- | gcc/flow.c | 16 |
1 files changed, 10 insertions, 6 deletions
@@ -5263,11 +5263,13 @@ mark_used_regs (pbi, x, cond, insn) break; case SUBREG: +#ifdef CLASS_CANNOT_CHANGE_MODE if (GET_CODE (SUBREG_REG (x)) == REG && REGNO (SUBREG_REG (x)) >= FIRST_PSEUDO_REGISTER - && (GET_MODE_SIZE (GET_MODE (x)) - != GET_MODE_SIZE (GET_MODE (SUBREG_REG (x))))) - REG_CHANGES_SIZE (REGNO (SUBREG_REG (x))) = 1; + && CLASS_CANNOT_CHANGE_MODE_P (GET_MODE (x), + GET_MODE (SUBREG_REG (x)))) + REG_CHANGES_MODE (REGNO (SUBREG_REG (x))) = 1; +#endif /* While we're here, optimize this case. */ x = SUBREG_REG (x); @@ -5310,12 +5312,14 @@ mark_used_regs (pbi, x, cond, insn) || GET_CODE (testreg) == SIGN_EXTRACT || GET_CODE (testreg) == SUBREG) { +#ifdef CLASS_CANNOT_CHANGE_MODE if (GET_CODE (testreg) == SUBREG && GET_CODE (SUBREG_REG (testreg)) == REG && REGNO (SUBREG_REG (testreg)) >= FIRST_PSEUDO_REGISTER - && (GET_MODE_SIZE (GET_MODE (testreg)) - != GET_MODE_SIZE (GET_MODE (SUBREG_REG (testreg))))) - REG_CHANGES_SIZE (REGNO (SUBREG_REG (testreg))) = 1; + && CLASS_CANNOT_CHANGE_MODE_P (GET_MODE (SUBREG_REG (testreg)), + GET_MODE (testreg))) + REG_CHANGES_MODE (REGNO (SUBREG_REG (testreg))) = 1; +#endif /* Modifying a single register in an alternate mode does not use any of the old value. But these other |