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function.c (instantiate_virtual_regs): Use FOR_EACH_BB and FOR_BB_INSNS_SAFE to iterate through insns.

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* function.c (instantiate_virtual_regs): Use FOR_EACH_BB and
	FOR_BB_INSNS_SAFE to iterate through insns.  Re-indent.
	(pass_instantiate_virtual_regs): Require PROP_cfglayout.
	* passes.c (init_optimization_passes): Move
	pass_instantiate_virtual_regs after pass_into_cfg_layout_mode.

From-SVN: r171426
This commit is contained in:
Nathan Froyd 2011-03-24 23:37:02 +00:00 • committed by Nathan Froyd
parent c867956724
commit 7114321ee4
3 changed files with 42 additions and 27 deletions
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8
gcc/ChangeLog
View file

@ -1,3 +1,11 @@
2011-03-24 Nathan Froyd <froydnj@codesourcery.com>
* function.c (instantiate_virtual_regs): Use FOR_EACH_BB and
FOR_BB_INSNS_SAFE to iterate through insns. Re-indent.
(pass_instantiate_virtual_regs): Require PROP_cfglayout.
* passes.c (init_optimization_passes): Move
pass_instantiate_virtual_regs after pass_into_cfg_layout_mode.
2011-03-24 Eric Botcazou <ebotcazou@adacore.com>
* dojump.c (do_jump_by_parts_greater_rtx): Optimize in specific cases.

59
gcc/function.c
View file

@ -1883,7 +1883,7 @@ instantiate_decls (tree fndecl)
static unsigned int
instantiate_virtual_regs (void)
{
rtx insn;
basic_block bb;
/* Compute the offsets to use for this function. */
in_arg_offset = FIRST_PARM_OFFSET (current_function_decl);
@ -1901,33 +1901,40 @@ instantiate_virtual_regs (void)
/* Scan through all the insns, instantiating every virtual register still
present. */
for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
if (INSN_P (insn))
{
/* These patterns in the instruction stream can never be recognized.
Fortunately, they shouldn't contain virtual registers either. */
if (GET_CODE (PATTERN (insn)) == USE
|| GET_CODE (PATTERN (insn)) == CLOBBER
|| GET_CODE (PATTERN (insn)) == ADDR_VEC
|| GET_CODE (PATTERN (insn)) == ADDR_DIFF_VEC
|| GET_CODE (PATTERN (insn)) == ASM_INPUT)
continue;
else if (DEBUG_INSN_P (insn))
for_each_rtx (&INSN_VAR_LOCATION (insn),
instantiate_virtual_regs_in_rtx, NULL);
else
instantiate_virtual_regs_in_insn (insn);
FOR_EACH_BB (bb)
{
rtx insn, curr;
if (INSN_DELETED_P (insn))
continue;
FOR_BB_INSNS_SAFE (bb, insn, curr)
{
if (INSN_P (insn))
{
/* These patterns in the instruction stream can never be recognized.
Fortunately, they shouldn't contain virtual registers either. */
if (GET_CODE (PATTERN (insn)) == USE
|| GET_CODE (PATTERN (insn)) == CLOBBER
|| GET_CODE (PATTERN (insn)) == ADDR_VEC
|| GET_CODE (PATTERN (insn)) == ADDR_DIFF_VEC
|| GET_CODE (PATTERN (insn)) == ASM_INPUT)
continue;
else if (DEBUG_INSN_P (insn))
for_each_rtx (&INSN_VAR_LOCATION (insn),
instantiate_virtual_regs_in_rtx, NULL);
else
instantiate_virtual_regs_in_insn (insn);
for_each_rtx (&REG_NOTES (insn), instantiate_virtual_regs_in_rtx, NULL);
if (INSN_DELETED_P (insn))
continue;
/* Instantiate any virtual registers in CALL_INSN_FUNCTION_USAGE. */
if (CALL_P (insn))
for_each_rtx (&CALL_INSN_FUNCTION_USAGE (insn),
instantiate_virtual_regs_in_rtx, NULL);
}
for_each_rtx (&REG_NOTES (insn), instantiate_virtual_regs_in_rtx, NULL);
/* Instantiate any virtual registers in CALL_INSN_FUNCTION_USAGE. */
if (CALL_P (insn))
for_each_rtx (&CALL_INSN_FUNCTION_USAGE (insn),
instantiate_virtual_regs_in_rtx, NULL);
}
}
}
/* Instantiate the virtual registers in the DECLs for debugging purposes. */
instantiate_decls (current_function_decl);
@ -1963,7 +1970,7 @@ struct rtl_opt_pass pass_instantiate_virtual_regs =
NULL, /* next */
0, /* static_pass_number */
TV_NONE, /* tv_id */
0, /* properties_required */
PROP_cfglayout, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */

2
gcc/passes.c
View file

@ -956,8 +956,8 @@ init_optimization_passes (void)
NEXT_PASS (pass_rtl_eh);
NEXT_PASS (pass_initial_value_sets);
NEXT_PASS (pass_unshare_all_rtl);
NEXT_PASS (pass_instantiate_virtual_regs);
NEXT_PASS (pass_into_cfg_layout_mode);
NEXT_PASS (pass_instantiate_virtual_regs);
NEXT_PASS (pass_jump2);
NEXT_PASS (pass_lower_subreg);
NEXT_PASS (pass_df_initialize_opt);