diff options
Diffstat (limited to 'gcc/config/ia64/ia64.c')
| -rw-r--r-- | gcc/config/ia64/ia64.c | 43 |
1 files changed, 31 insertions, 12 deletions
diff --git a/gcc/config/ia64/ia64.c b/gcc/config/ia64/ia64.c index 75c8f0ee6c4..8460475bddb 100644 --- a/gcc/config/ia64/ia64.c +++ b/gcc/config/ia64/ia64.c @@ -303,6 +303,7 @@ static enum machine_mode ia64_promote_function_mode (const_tree, const_tree, int); static void ia64_trampoline_init (rtx, tree, rtx); +static void ia64_override_options_after_change (void); /* Table of valid machine attributes. */ static const struct attribute_spec ia64_attribute_table[] = @@ -536,6 +537,9 @@ static const struct attribute_spec ia64_attribute_table[] = #undef TARGET_TRAMPOLINE_INIT #define TARGET_TRAMPOLINE_INIT ia64_trampoline_init +#undef TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE +#define TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE ia64_override_options_after_change + struct gcc_target targetm = TARGET_INITIALIZER; typedef enum @@ -5496,6 +5500,33 @@ ia64_override_options (void) if (TARGET_AUTO_PIC) target_flags |= MASK_CONST_GP; + /* Numerous experiment shows that IRA based loop pressure + calculation works better for RTL loop invariant motion on targets + with enough (>= 32) registers. It is an expensive optimization. + So it is on only for peak performance. */ + if (optimize >= 3) + flag_ira_loop_pressure = 1; + + + ia64_section_threshold = g_switch_set ? g_switch_value : IA64_DEFAULT_GVALUE; + + init_machine_status = ia64_init_machine_status; + + if (align_functions <= 0) + align_functions = 64; + if (align_loops <= 0) + align_loops = 32; + if (TARGET_ABI_OPEN_VMS) + flag_no_common = 1; + + ia64_override_options_after_change(); +} + +/* Implement targetm.override_options_after_change. */ + +static void +ia64_override_options_after_change (void) +{ ia64_flag_schedule_insns2 = flag_schedule_insns_after_reload; flag_schedule_insns_after_reload = 0; @@ -5517,18 +5548,6 @@ ia64_override_options (void) a transformation. */ flag_auto_inc_dec = 0; } - - ia64_section_threshold = g_switch_set ? g_switch_value : IA64_DEFAULT_GVALUE; - - init_machine_status = ia64_init_machine_status; - - if (align_functions <= 0) - align_functions = 64; - if (align_loops <= 0) - align_loops = 32; - - if (TARGET_ABI_OPEN_VMS) - flag_no_common = 1; } /* Initialize the record of emitted frame related registers. */ |