diff options
| -rw-r--r-- | gcc/ChangeLog | 9 | ||||
| -rw-r--r-- | gcc/common.opt | 6 | ||||
| -rw-r--r-- | gcc/toplev.c | 26 |
3 files changed, 25 insertions, 16 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index d23ed15..c24f4b4 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -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, diff --git a/gcc/common.opt b/gcc/common.opt index 9d2b671..4af5f50 100644 --- a/gcc/common.opt +++ b/gcc/common.opt @@ -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 diff --git a/gcc/toplev.c b/gcc/toplev.c index 0250c97..368e9e6 100644 --- a/gcc/toplev.c +++ b/gcc/toplev.c @@ -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. |