diff options
Diffstat (limited to 'gcc/function.c')
| -rw-r--r-- | gcc/function.c | 88 |
1 files changed, 4 insertions, 84 deletions
diff --git a/gcc/function.c b/gcc/function.c index 008669f..1d17c4f 100644 --- a/gcc/function.c +++ b/gcc/function.c @@ -186,8 +186,6 @@ struct temp_slot GTY(()) It can be reused if objects of the type of the new slot will always conflict with objects of the type of the old slot. */ tree type; - /* The value of `sequence_rtl_expr' when this temporary is allocated. */ - tree rtl_expr; /* Nonzero if this temporary is currently in use. */ char in_use; /* Nonzero if this temporary has its address taken. */ @@ -440,7 +438,6 @@ free_after_compilation (struct function *f) f->x_naked_return_label = NULL; f->x_save_expr_regs = NULL; f->x_stack_slot_list = NULL; - f->x_rtl_expr_chain = NULL; f->x_tail_recursion_reentry = NULL; f->x_arg_pointer_save_area = NULL; f->x_parm_birth_insn = NULL; @@ -768,7 +765,6 @@ assign_stack_temp_for_type (enum machine_mode mode, HOST_WIDE_INT size, int keep rounded_size)); p->align = best_p->align; p->address = 0; - p->rtl_expr = 0; p->type = best_p->type; insert_slot_to_list (p, &avail_temp_slots); @@ -834,7 +830,6 @@ assign_stack_temp_for_type (enum machine_mode mode, HOST_WIDE_INT size, int keep p = selected; p->in_use = 1; p->addr_taken = 0; - p->rtl_expr = seq_rtl_expr; p->type = type; if (keep == 2) @@ -1230,39 +1225,8 @@ preserve_temp_slots (rtx x) } } -/* X is the result of an RTL_EXPR. If it is a temporary slot associated - with that RTL_EXPR, promote it into a temporary slot at the present - level so it will not be freed when we free slots made in the - RTL_EXPR. */ - -void -preserve_rtl_expr_result (rtx x) -{ - struct temp_slot *p; - - /* If X is not in memory or is at a constant address, it cannot be in - a temporary slot. */ - if (x == 0 || !MEM_P (x) || CONSTANT_P (XEXP (x, 0))) - return; - - /* If we can find a match, move it to our level unless it is already at - an upper level. */ - p = find_temp_slot_from_address (XEXP (x, 0)); - if (p != 0) - { - move_slot_to_level (p, MIN (p->level, temp_slot_level)); - p->rtl_expr = 0; - } - - return; -} - -/* Free all temporaries used so far. This is normally called at the end - of generating code for a statement. Don't free any temporaries - currently in use for an RTL_EXPR that hasn't yet been emitted. - We could eventually do better than this since it can be reused while - generating the same RTL_EXPR, but this is complex and probably not - worthwhile. */ +/* Free all temporaries used so far. This is normally called at the + end of generating code for a statement. */ void free_temp_slots (void) @@ -1273,40 +1237,13 @@ free_temp_slots (void) { next = p->next; - if (!p->keep && p->rtl_expr == 0) + if (!p->keep) make_slot_available (p); } combine_temp_slots (); } -/* Free all temporary slots used in T, an RTL_EXPR node. */ - -void -free_temps_for_rtl_expr (tree t) -{ - struct temp_slot *p, *next; - - for (p = *temp_slots_at_level (temp_slot_level); p; p = next) - { - next = p->next; - - if (p->rtl_expr == t) - { - /* If this slot is below the current TEMP_SLOT_LEVEL, then it - needs to be preserved. This can happen if a temporary in - the RTL_EXPR was addressed; preserve_temp_slots will move - the temporary into a higher level. */ - if (temp_slot_level <= p->level) - make_slot_available (p); - else - p->rtl_expr = NULL_TREE; - } - } - - combine_temp_slots (); -} - /* Push deeper into the nesting level for stack temporaries. */ void @@ -1326,9 +1263,7 @@ pop_temp_slots (void) for (p = *temp_slots_at_level (temp_slot_level); p; p = next) { next = p->next; - - if (p->rtl_expr == 0) - make_slot_available (p); + make_slot_available (p); } combine_temp_slots (); @@ -1587,10 +1522,8 @@ static void fixup_var_refs (rtx var, enum machine_mode promoted_mode, int unsignedp, rtx may_share, htab_t ht) { - tree pending; rtx first_insn = get_insns (); struct sequence_stack *stack = seq_stack; - tree rtl_exps = rtl_expr_chain; int save_volatile_ok = volatile_ok; /* If there's a hash table, it must record all uses of VAR. */ @@ -1621,19 +1554,6 @@ fixup_var_refs (rtx var, enum machine_mode promoted_mode, int unsignedp, end_sequence (); } - /* Scan all waiting RTL_EXPRs too. */ - for (pending = rtl_exps; pending; pending = TREE_CHAIN (pending)) - { - rtx seq = RTL_EXPR_SEQUENCE (TREE_VALUE (pending)); - if (seq != const0_rtx && seq != 0) - { - push_to_sequence (seq); - fixup_var_refs_insns (seq, var, promoted_mode, unsignedp, 0, - may_share); - end_sequence (); - } - } - volatile_ok = save_volatile_ok; } |