diff options
| author | Bernd Schmidt <bernds@codesourcery.com> | 2012-05-14 12:08:31 +0000 |
|---|---|---|
| committer | Bernd Schmidt <bernds@gcc.gnu.org> | 2012-05-14 12:08:31 +0000 |
| commit | e384e6b59c074ac936f0f3212ca33fe40f3d82f5 (patch) | |
| tree | f9965bd4902a6a182ee0908a0ebd8e8bbd34a1cf /gcc/ira-int.h | |
| parent | 92290a187e25ed1b21ff99de259421e7b540349e (diff) | |
attribs.c (decl_attributes): Avoid emitting a warning if ATTR_FLAG_BUILT_IN.
* attribs.c (decl_attributes): Avoid emitting a warning if
ATTR_FLAG_BUILT_IN.
* doc/rtl.texi (CALL_INSN_FUNCTION_USAGE): Use lowercase for rtx
codes. Document meaning of sets inside CALL_INSN_FUNCTION_USAGE.
* c-family/c-common.c (DEF_ATTR_STRING): Define and undefine as
necessary.
* builtin-attrs.def (DEF_ATTR_FOR_STRING): Define. Use it to
define a string "1".
(ATTR_RET1_NOTHROW_NONNULL_LEAF): New attr definition.
* builtins.def (BUILT_IN_MEMCPY, BUILT_IN_MEMMOVE, BUILT_IN_MEMSET,
BUILT_IN_STRCPY): Use it for these functions.
* postreload.c (reload_combine): Deal with SETs inside
CALL_INSN_FUNCTION_USAGE.
* caller-save.c (setup_save_areas, save_call_clobbered_regs):
Look for REG_RETURNED notes and use a cheap restore if possible.
* ira-int.h (struct ira_allocno): New member cheap_calls_crossed_num.
(ALLOCNO_CHEAP_CALLS_CROSSED_NUM): New macro.
* ira-build.c (ira_create_allocno, create_cap_allocno,
propagate_allocno_info, propagate_some_info_from_allocno,
copy_info_to_removed_store_destination, ira_flattening): Handle it.
* ira-lives.c (pseudo_regno_single_word_and_live_p,
find_call_crossed_cheap_reg): New static functions.
(process_bb_node_lives): Look for SETs in CALL_INSN_FUNCTION_USAGE,
and set ALLOCNO_CHEAP_CALLS_CROSSED_NUM if possible. Also make
a REG_RETURNED note in that case.
* ira.c (setup_reg_renumber): Change assert to allow cases where
allocnos only cross calls for which they are cheap to restore.
* ira-costs.c (ira_tune_allocno_costs): Compare
ALLOCNO_CALLS_CROSSED_NUM to ALLOCNO_CHEAP_CALLS_CROSSED_NUM rather
than 0.
* reg-notes.def (REG_RETURNED): New note.
* cse.c (cse_insn): Likewise.
* sched-deps.c (sched_analyze_insn): Likewise.
* expr.c (init_block_move_fn): Set a "fn spec" attribute.
* calls.c (decl_return_flags): New static function.
(expand_call): Generate a SET in CALL_INSN_FUNCTION_USAGE for
functions that return one of their arguments.
* lto/lto-lang.c (handle_fnspec_attribute): New static function.
(lto_attribute_table): Add "fn spec".
(DEF_ATTR_STRING): Define and undefine along with the other macros.
* regcprop.c (struct kill_set_value_data): New.
(kill_set_value): Interpret data as a pointer to such a struct.
Do nothing if the caller wants the register to be ignored.
(copyprop_hardreg_forward_1): Handle SETs in CALL_INSN_FUNCTION_USAGE.
testsuite/
* gcc.target/i386/retarg.c: New test.
From-SVN: r187459
Diffstat (limited to 'gcc/ira-int.h')
| -rw-r--r-- | gcc/ira-int.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/ira-int.h b/gcc/ira-int.h index 5db2ccc268c..02bec132614 100644 --- a/gcc/ira-int.h +++ b/gcc/ira-int.h @@ -376,6 +376,9 @@ struct ira_allocno int call_freq; /* Accumulated number of the intersected calls. */ int calls_crossed_num; + /* The number of calls across which it is live, but which should not + affect register preferences. */ + int cheap_calls_crossed_num; /* Array of usage costs (accumulated and the one updated during coloring) for each hard register of the allocno class. The member value can be NULL if all costs are the same and equal to @@ -418,6 +421,7 @@ struct ira_allocno #define ALLOCNO_HARD_REGNO(A) ((A)->hard_regno) #define ALLOCNO_CALL_FREQ(A) ((A)->call_freq) #define ALLOCNO_CALLS_CROSSED_NUM(A) ((A)->calls_crossed_num) +#define ALLOCNO_CHEAP_CALLS_CROSSED_NUM(A) ((A)->cheap_calls_crossed_num) #define ALLOCNO_MEM_OPTIMIZED_DEST(A) ((A)->mem_optimized_dest) #define ALLOCNO_MEM_OPTIMIZED_DEST_P(A) ((A)->mem_optimized_dest_p) #define ALLOCNO_SOMEWHERE_RENAMED_P(A) ((A)->somewhere_renamed_p) |