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common.opt (frename-registers): Initialize to 2. 

* common.opt (frename-registers): Initialize to 2.
	(fweb): Ditto.
	(fgcse-after-reload): Ditto.
	* toplev.c (AUTODETECT_FLAG_VAR_TRACKING): Rename to AUTODETECT_VALUE.
	(process_options): Only change flag_web, flag_rename_registers,
	and flag_rerun_cse_after_loop if not explicitly set by user.

From-SVN: r102141
This commit is contained in:
Steve Ellcey 2005-07-18 21:14:19 +00:00 committed by Steve Ellcey
parent 3b8350f542
commit 2928d0f870
3 changed files with 25 additions and 16 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2005-07-18 Steve Ellcey <sje@cup.hp.com>
* common.opt (frename-registers): Initialize to 2.
(fweb): Ditto.
(fgcse-after-reload): Ditto.
* toplev.c (AUTODETECT_FLAG_VAR_TRACKING): Rename to AUTODETECT_VALUE.
(process_options): Only change flag_web, flag_rename_registers,
and flag_rerun_cse_after_loop if not explicitly set by user.
2005-07-18 Jan Beulich <jbeulich@novell.com>
* config/i386/i386.c (ix86_expand_branch, ix86_expand_setcc,

6
gcc/common.opt
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@ -431,7 +431,7 @@ Perform redundant load after store elimination in global common subexpression
elimination
fgcse-after-reload
Common Report Var(flag_gcse_after_reload)
Common Report Var(flag_gcse_after_reload) Init(2)
Perform global common subexpression elimination after register allocation
has finished
@ -674,7 +674,7 @@ Common Report Var(flag_regmove)
Enables a register move optimization
frename-registers
Common Report Var(flag_rename_registers)
Common Report Var(flag_rename_registers) Init(2)
Perform a register renaming optimization pass
freorder-blocks
@ -1015,7 +1015,7 @@ Common Report Var(flag_value_profile_transformations)
Use expression value profiles in optimizations
fweb
Common Report Var(flag_web) Init(0)
Common Report Var(flag_web) Init(2)
Construct webs and split unrelated uses of single variable
fwhole-program

26
gcc/toplev.c
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@ -145,7 +145,7 @@ location_t unknown_location = { NULL, 0 };
/* Used to enable -fvar-tracking, -fweb and -frename-registers according
to optimize and default_debug_hooks in process_options (). */
#define AUTODETECT_FLAG_VAR_TRACKING 2
#define AUTODETECT_VALUE 2
/* Current position in real source file. */
@ -334,9 +334,9 @@ rtx stack_limit_rtx;
int flag_renumber_insns = 1;
/* Nonzero if we should track variables. When
flag_var_tracking == AUTODETECT_FLAG_VAR_TRACKING it will be set according
flag_var_tracking == AUTODETECT_VALUE it will be set according
to optimize, debug_info_level and debug_hooks in process_options (). */
int flag_var_tracking = AUTODETECT_FLAG_VAR_TRACKING;
int flag_var_tracking = AUTODETECT_VALUE;
/* True if the user has tagged the function with the 'section'
attribute. */
@ -1531,14 +1531,14 @@ process_options (void)
flag_unroll_loops = 1;
/* The loop unrolling code assumes that cse will be run after loop.
Also enable -fweb and -frename-registers that help scheduling
the unrolled loop. */
if (flag_unroll_loops || flag_peel_loops)
{
flag_rerun_cse_after_loop = 1;
flag_web = 1;
flag_rename_registers = 1;
}
web and rename-registers also help when run after loop unrolling. */
if (flag_rerun_cse_after_loop == AUTODETECT_VALUE)
flag_rerun_cse_after_loop = flag_unroll_loops || flag_peel_loops;
if (flag_web == AUTODETECT_VALUE)
flag_web = flag_unroll_loops || flag_peel_loops;
if (flag_rename_registers == AUTODETECT_VALUE)
flag_rename_registers = flag_unroll_loops || flag_peel_loops;
/* If explicitly asked to run new loop optimizer, switch off the old
one. */
@ -1693,11 +1693,11 @@ process_options (void)
flag_var_tracking = 0;
}
if (flag_rename_registers == AUTODETECT_FLAG_VAR_TRACKING)
if (flag_rename_registers == AUTODETECT_VALUE)
flag_rename_registers = default_debug_hooks->var_location
!= do_nothing_debug_hooks.var_location;
if (flag_var_tracking == AUTODETECT_FLAG_VAR_TRACKING)
if (flag_var_tracking == AUTODETECT_VALUE)
flag_var_tracking = optimize >= 1;
/* If auxiliary info generation is desired, open the output file.