From bc4c7159d8a4797ec093f042bb8e74aab7d28b0d Mon Sep 17 00:00:00 2001
From: Alexandre Oliva <aoliva@redhat.com>
Date: Fri, 5 Oct 2001 03:47:57 +0000
Subject: [PATCH] optimize.c (struct inline_data): Moved to ../tree-inline.c.
* optimize.c (struct inline_data): Moved to ../tree-inline.c.
(INSNS_PER_STMT): Likewise.
(remap_decl, remap_block, copy_scopy_stmt, copy_body_r): Likewise.
(copy_body, initialize_inlined_parameters): Likewise.
(declare_return_variable, inlinable_function_p): Likewise.
(expand_call_inline, expand_calls_inline): Likewise.
(optimize_inline_calls, clone_body): Likewise.
* tree.c (walk_tree): Moved to ../tree-inline.c.
(walk_tree_without_duplicates): Likewise.
(copy_tree_r, remap_save_expr): Likewise.
From-SVN: r46022
---
gcc/cp/ChangeLog | 13 +
gcc/cp/optimize.c | 969 ----------------------------------------------
gcc/cp/tree.c | 322 ---------------
3 files changed, 13 insertions(+), 1291 deletions(-)
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 2926e129494c..959f2efa37c4 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,16 @@
+2001-10-05 Alexandre Oliva <aoliva@redhat.com>
+
+ * optimize.c (struct inline_data): Moved to ../tree-inline.c.
+ (INSNS_PER_STMT): Likewise.
+ (remap_decl, remap_block, copy_scopy_stmt, copy_body_r): Likewise.
+ (copy_body, initialize_inlined_parameters): Likewise.
+ (declare_return_variable, inlinable_function_p): Likewise.
+ (expand_call_inline, expand_calls_inline): Likewise.
+ (optimize_inline_calls, clone_body): Likewise.
+ * tree.c (walk_tree): Moved to ../tree-inline.c.
+ (walk_tree_without_duplicates): Likewise.
+ (copy_tree_r, remap_save_expr): Likewise.
+
2001-10-04 Alexandre Oliva <aoliva@redhat.com>
* Make-lang.in (cp/decl.o, cp/tree.o): Depend on tree-inline.h.
diff --git a/gcc/cp/optimize.c b/gcc/cp/optimize.c
index bbc555bf6a9b..99d89877ae81 100644
--- a/gcc/cp/optimize.c
+++ b/gcc/cp/optimize.c
@@ -35,949 +35,12 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
#include "debug.h"
#include "tree-inline.h"
-/* To Do:
-
- o In order to make inlining-on-trees work, we pessimized
- function-local static constants. In particular, they are now
- always output, even when not addressed. Fix this by treating
- function-local static constants just like global static
- constants; the back-end already knows not to output them if they
- are not needed.
-
- o Provide heuristics to clamp inlining of recursive template
- calls? */
-
-/* Data required for function inlining. */
-
-typedef struct inline_data
-{
- /* A stack of the functions we are inlining. For example, if we are
- compiling `f', which calls `g', which calls `h', and we are
- inlining the body of `h', the stack will contain, `h', followed
- by `g', followed by `f'. The first few elements of the stack may
- contain other functions that we know we should not recurse into,
- even though they are not directly being inlined. */
- varray_type fns;
- /* The index of the first element of FNS that really represents an
- inlined function. */
- unsigned first_inlined_fn;
- /* The label to jump to when a return statement is encountered. If
- this value is NULL, then return statements will simply be
- remapped as return statements, rather than as jumps. */
- tree ret_label;
- /* The map from local declarations in the inlined function to
- equivalents in the function into which it is being inlined. */
- splay_tree decl_map;
- /* Nonzero if we are currently within the cleanup for a
- TARGET_EXPR. */
- int in_target_cleanup_p;
- /* A stack of the TARGET_EXPRs that we are currently processing. */
- varray_type target_exprs;
- /* A list of the functions current function has inlined. */
- varray_type inlined_fns;
- /* The approximate number of statements we have inlined in the
- current call stack. */
- int inlined_stmts;
- /* We use the same mechanism to build clones that we do to perform
- inlining. However, there are a few places where we need to
- distinguish between those two situations. This flag is true if
- we are cloning, rather than inlining. */
- bool cloning_p;
- /* Hash table used to prevent walk_tree from visiting the same node
- umpteen million times. */
- htab_t tree_pruner;
-} inline_data;
-
/* Prototypes. */
-static tree initialize_inlined_parameters PARAMS ((inline_data *, tree, tree));
-static tree declare_return_variable PARAMS ((inline_data *, tree *));
-static tree copy_body_r PARAMS ((tree *, int *, void *));
-static tree copy_body PARAMS ((inline_data *));
-static tree expand_call_inline PARAMS ((tree *, int *, void *));
-static void expand_calls_inline PARAMS ((tree *, inline_data *));
-static int inlinable_function_p PARAMS ((tree, inline_data *));
-static tree remap_decl PARAMS ((tree, inline_data *));
-static void remap_block PARAMS ((tree, tree, inline_data *));
-static void copy_scope_stmt PARAMS ((tree *, int *, inline_data *));
static tree calls_setjmp_r PARAMS ((tree *, int *, void *));
static void update_cloned_parm PARAMS ((tree, tree));
static void dump_function PARAMS ((enum tree_dump_index, tree));
-/* The approximate number of instructions per statement. This number
- need not be particularly accurate; it is used only to make
- decisions about when a function is too big to inline. */
-#define INSNS_PER_STMT (10)
-
-/* Remap DECL during the copying of the BLOCK tree for the function. */
-
-static tree
-remap_decl (decl, id)
- tree decl;
- inline_data *id;
-{
- splay_tree_node n;
- tree fn;
-
- /* We only remap local variables in the current function. */
- fn = VARRAY_TOP_TREE (id->fns);
- if (! LANG_AUTO_VAR_IN_FN_P (decl, fn))
- return NULL_TREE;
-
- /* See if we have remapped this declaration. */
- n = splay_tree_lookup (id->decl_map, (splay_tree_key) decl);
- /* If we didn't already have an equivalent for this declaration,
- create one now. */
- if (!n)
- {
- tree t;
-
- /* Make a copy of the variable or label. */
- t = copy_decl_for_inlining (decl, fn,
- VARRAY_TREE (id->fns, 0));
-
- /* The decl T could be a dynamic array or other variable size type,
- in which case some fields need to be remapped because they may
- contain SAVE_EXPRs. */
- walk_tree (&DECL_SIZE (t), copy_body_r, id, NULL);
- walk_tree (&DECL_SIZE_UNIT (t), copy_body_r, id, NULL);
- if (TREE_TYPE (t) && TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE
- && TYPE_DOMAIN (TREE_TYPE (t)))
- {
- TREE_TYPE (t) = copy_node (TREE_TYPE (t));
- TYPE_DOMAIN (TREE_TYPE (t))
- = copy_node (TYPE_DOMAIN (TREE_TYPE (t)));
- walk_tree (&TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (t))),
- copy_body_r, id, NULL);
- }
-
- if (! DECL_NAME (t) && TREE_TYPE (t)
- && LANG_ANON_AGGR_TYPE_P (TREE_TYPE (t)))
- {
- /* For a VAR_DECL of anonymous type, we must also copy the
- member VAR_DECLS here and rechain the
- DECL_ANON_UNION_ELEMS. */
- tree members = NULL;
- tree src;
-
- for (src = DECL_ANON_UNION_ELEMS (t); src;
- src = TREE_CHAIN (src))
- {
- tree member = remap_decl (TREE_VALUE (src), id);
-
- if (TREE_PURPOSE (src))
- abort ();
- members = tree_cons (NULL, member, members);
- }
- DECL_ANON_UNION_ELEMS (t) = nreverse (members);
- }
-
- /* Remember it, so that if we encounter this local entity
- again we can reuse this copy. */
- n = splay_tree_insert (id->decl_map,
- (splay_tree_key) decl,
- (splay_tree_value) t);
- }
-
- return (tree) n->value;
-}
-
-/* Copy the SCOPE_STMT_BLOCK associated with SCOPE_STMT to contain
- remapped versions of the variables therein. And hook the new block
- into the block-tree. If non-NULL, the DECLS are declarations to
- add to use instead of the BLOCK_VARS in the old block. */
-
-static void
-remap_block (scope_stmt, decls, id)
- tree scope_stmt;
- tree decls;
- inline_data *id;
-{
- /* We cannot do this in the cleanup for a TARGET_EXPR since we do
- not know whether or not expand_expr will actually write out the
- code we put there. If it does not, then we'll have more BLOCKs
- than block-notes, and things will go awry. At some point, we
- should make the back-end handle BLOCK notes in a tidier way,
- without requiring a strict correspondence to the block-tree; then
- this check can go. */
- if (id->in_target_cleanup_p)
- {
- SCOPE_STMT_BLOCK (scope_stmt) = NULL_TREE;
- return;
- }
-
- /* If this is the beginning of a scope, remap the associated BLOCK. */
- if (SCOPE_BEGIN_P (scope_stmt) && SCOPE_STMT_BLOCK (scope_stmt))
- {
- tree old_block;
- tree new_block;
- tree old_var;
- tree fn;
-
- /* Make the new block. */
- old_block = SCOPE_STMT_BLOCK (scope_stmt);
- new_block = make_node (BLOCK);
- TREE_USED (new_block) = TREE_USED (old_block);
- BLOCK_ABSTRACT_ORIGIN (new_block) = old_block;
- SCOPE_STMT_BLOCK (scope_stmt) = new_block;
-
- /* Remap its variables. */
- for (old_var = decls ? decls : BLOCK_VARS (old_block);
- old_var;
- old_var = TREE_CHAIN (old_var))
- {
- tree new_var;
-
- /* Remap the variable. */
- new_var = remap_decl (old_var, id);
- /* If we didn't remap this variable, so we can't mess with
- its TREE_CHAIN. If we remapped this variable to
- something other than a declaration (say, if we mapped it
- to a constant), then we must similarly omit any mention
- of it here. */
- if (!new_var || !DECL_P (new_var))
- ;
- else
- {
- TREE_CHAIN (new_var) = BLOCK_VARS (new_block);
- BLOCK_VARS (new_block) = new_var;
- }
- }
- /* We put the BLOCK_VARS in reverse order; fix that now. */
- BLOCK_VARS (new_block) = nreverse (BLOCK_VARS (new_block));
- fn = VARRAY_TREE (id->fns, 0);
- if (id->cloning_p)
- /* We're building a clone; DECL_INITIAL is still
- error_mark_node, and current_binding_level is the parm
- binding level. */
- insert_block (new_block);
- else
- {
- /* Attach this new block after the DECL_INITIAL block for the
- function into which this block is being inlined. In
- rest_of_compilation we will straighten out the BLOCK tree. */
- tree *first_block;
- if (DECL_INITIAL (fn))
- first_block = &BLOCK_CHAIN (DECL_INITIAL (fn));
- else
- first_block = &DECL_INITIAL (fn);
- BLOCK_CHAIN (new_block) = *first_block;
- *first_block = new_block;
- }
- /* Remember the remapped block. */
- splay_tree_insert (id->decl_map,
- (splay_tree_key) old_block,
- (splay_tree_value) new_block);
- }
- /* If this is the end of a scope, set the SCOPE_STMT_BLOCK to be the
- remapped block. */
- else if (SCOPE_END_P (scope_stmt) && SCOPE_STMT_BLOCK (scope_stmt))
- {
- splay_tree_node n;
-
- /* Find this block in the table of remapped things. */
- n = splay_tree_lookup (id->decl_map,
- (splay_tree_key) SCOPE_STMT_BLOCK (scope_stmt));
- if (! n)
- abort ();
- SCOPE_STMT_BLOCK (scope_stmt) = (tree) n->value;
- }
-}
-
-/* Copy the SCOPE_STMT pointed to by TP. */
-
-static void
-copy_scope_stmt (tp, walk_subtrees, id)
- tree *tp;
- int *walk_subtrees;
- inline_data *id;
-{
- tree block;
-
- /* Remember whether or not this statement was nullified. When
- making a copy, copy_tree_r always sets SCOPE_NULLIFIED_P (and
- doesn't copy the SCOPE_STMT_BLOCK) to free callers from having to
- deal with copying BLOCKs if they do not wish to do so. */
- block = SCOPE_STMT_BLOCK (*tp);
- /* Copy (and replace) the statement. */
- copy_tree_r (tp, walk_subtrees, NULL);
- /* Restore the SCOPE_STMT_BLOCK. */
- SCOPE_STMT_BLOCK (*tp) = block;
-
- /* Remap the associated block. */
- remap_block (*tp, NULL_TREE, id);
-}
-
-/* Called from copy_body via walk_tree. DATA is really an
- `inline_data *'. */
-
-static tree
-copy_body_r (tp, walk_subtrees, data)
- tree *tp;
- int *walk_subtrees;
- void *data;
-{
- inline_data* id;
- tree fn;
-
- /* Set up. */
- id = (inline_data *) data;
- fn = VARRAY_TOP_TREE (id->fns);
-
-#if 0
- /* All automatic variables should have a DECL_CONTEXT indicating
- what function they come from. */
- if ((TREE_CODE (*tp) == VAR_DECL || TREE_CODE (*tp) == LABEL_DECL)
- && DECL_NAMESPACE_SCOPE_P (*tp))
- if (! DECL_EXTERNAL (*tp) && ! TREE_STATIC (*tp))
- abort ();
-#endif
-
- /* If this is a RETURN_STMT, change it into an EXPR_STMT and a
- GOTO_STMT with the RET_LABEL as its target. */
- if (TREE_CODE (*tp) == RETURN_STMT && id->ret_label)
- {
- tree return_stmt = *tp;
- tree goto_stmt;
-
- /* Build the GOTO_STMT. */
- goto_stmt = build_stmt (GOTO_STMT, id->ret_label);
- TREE_CHAIN (goto_stmt) = TREE_CHAIN (return_stmt);
-
- /* If we're returning something, just turn that into an
- assignment into the equivalent of the original
- RESULT_DECL. */
- if (RETURN_EXPR (return_stmt))
- {
- *tp = build_stmt (EXPR_STMT,
- RETURN_EXPR (return_stmt));
- STMT_IS_FULL_EXPR_P (*tp) = 1;
- /* And then jump to the end of the function. */
- TREE_CHAIN (*tp) = goto_stmt;
- }
- /* If we're not returning anything just do the jump. */
- else
- *tp = goto_stmt;
- }
- /* Local variables and labels need to be replaced by equivalent
- variables. We don't want to copy static variables; there's only
- one of those, no matter how many times we inline the containing
- function. */
- else if (LANG_AUTO_VAR_IN_FN_P (*tp, fn))
- {
- tree new_decl;
-
- /* Remap the declaration. */
- new_decl = remap_decl (*tp, id);
- if (! new_decl)
- abort ();
- /* Replace this variable with the copy. */
- STRIP_TYPE_NOPS (new_decl);
- *tp = new_decl;
- }
-#if 0
- else if (nonstatic_local_decl_p (*tp)
- && DECL_CONTEXT (*tp) != VARRAY_TREE (id->fns, 0))
- abort ();
-#endif
- else if (TREE_CODE (*tp) == SAVE_EXPR)
- remap_save_expr (tp, id->decl_map, VARRAY_TREE (id->fns, 0),
- walk_subtrees);
- else if (TREE_CODE (*tp) == UNSAVE_EXPR)
- /* UNSAVE_EXPRs should not be generated until expansion time. */
- abort ();
- /* For a SCOPE_STMT, we must copy the associated block so that we
- can write out debugging information for the inlined variables. */
- else if (TREE_CODE (*tp) == SCOPE_STMT && !id->in_target_cleanup_p)
- copy_scope_stmt (tp, walk_subtrees, id);
- /* Otherwise, just copy the node. Note that copy_tree_r already
- knows not to copy VAR_DECLs, etc., so this is safe. */
- else
- {
- copy_tree_r (tp, walk_subtrees, NULL);
-
- /* The copied TARGET_EXPR has never been expanded, even if the
- original node was expanded already. */
- if (TREE_CODE (*tp) == TARGET_EXPR && TREE_OPERAND (*tp, 3))
- {
- TREE_OPERAND (*tp, 1) = TREE_OPERAND (*tp, 3);
- TREE_OPERAND (*tp, 3) = NULL_TREE;
- }
- else if (TREE_CODE (*tp) == MODIFY_EXPR
- && TREE_OPERAND (*tp, 0) == TREE_OPERAND (*tp, 1)
- && LANG_AUTO_VAR_IN_FN_P (TREE_OPERAND (*tp, 0), fn))
- {
- /* Some assignments VAR = VAR; don't generate any rtl code
- and thus don't count as variable modification. Avoid
- keeping bogosities like 0 = 0. */
- tree decl = TREE_OPERAND (*tp, 0), value;
- splay_tree_node n;
-
- n = splay_tree_lookup (id->decl_map, (splay_tree_key) decl);
- if (n)
- {
- value = (tree) n->value;
- STRIP_TYPE_NOPS (value);
- if (TREE_CONSTANT (value) || TREE_READONLY_DECL_P (value))
- *tp = value;
- }
- }
- }
-
- /* Keep iterating. */
- return NULL_TREE;
-}
-
-/* Make a copy of the body of FN so that it can be inserted inline in
- another function. */
-
-static tree
-copy_body (id)
- inline_data *id;
-{
- tree body;
-
- body = DECL_SAVED_TREE (VARRAY_TOP_TREE (id->fns));
- walk_tree (&body, copy_body_r, id, NULL);
-
- return body;
-}
-
-/* Generate code to initialize the parameters of the function at the
- top of the stack in ID from the ARGS (presented as a TREE_LIST). */
-
-static tree
-initialize_inlined_parameters (id, args, fn)
- inline_data *id;
- tree args;
- tree fn;
-{
- tree init_stmts;
- tree parms;
- tree a;
- tree p;
-
- /* Figure out what the parameters are. */
- parms = DECL_ARGUMENTS (fn);
-
- /* Start with no initializations whatsoever. */
- init_stmts = NULL_TREE;
-
- /* Loop through the parameter declarations, replacing each with an
- equivalent VAR_DECL, appropriately initialized. */
- for (p = parms, a = args; p; a = TREE_CHAIN (a), p = TREE_CHAIN (p))
- {
- tree init_stmt;
- tree var;
- tree value;
-
- /* Find the initializer. */
- value = TREE_VALUE (a);
- /* If the parameter is never assigned to, we may not need to
- create a new variable here at all. Instead, we may be able
- to just use the argument value. */
- if (TREE_READONLY (p)
- && !TREE_ADDRESSABLE (p)
- && !TREE_SIDE_EFFECTS (value))
- {
- /* Simplify the value, if possible. */
- value = fold (decl_constant_value (value));
-
- /* We can't risk substituting complex expressions. They
- might contain variables that will be assigned to later.
- Theoretically, we could check the expression to see if
- all of the variables that determine its value are
- read-only, but we don't bother. */
- if (TREE_CONSTANT (value) || TREE_READONLY_DECL_P (value))
- {
- /* If this is a declaration, wrap it a NOP_EXPR so that
- we don't try to put the VALUE on the list of
- BLOCK_VARS. */
- if (DECL_P (value))
- value = build1 (NOP_EXPR, TREE_TYPE (value), value);
-
- splay_tree_insert (id->decl_map,
- (splay_tree_key) p,
- (splay_tree_value) value);
- continue;
- }
- }
-
- /* Make an equivalent VAR_DECL. */
- var = copy_decl_for_inlining (p, fn, VARRAY_TREE (id->fns, 0));
- /* Register the VAR_DECL as the equivalent for the PARM_DECL;
- that way, when the PARM_DECL is encountered, it will be
- automatically replaced by the VAR_DECL. */
- splay_tree_insert (id->decl_map,
- (splay_tree_key) p,
- (splay_tree_value) var);
-
- /* Declare this new variable. */
- init_stmt = build_stmt (DECL_STMT, var);
- TREE_CHAIN (init_stmt) = init_stmts;
- init_stmts = init_stmt;
-
- /* Initialize this VAR_DECL from the equivalent argument. If
- the argument is an object, created via a constructor or copy,
- this will not result in an extra copy: the TARGET_EXPR
- representing the argument will be bound to VAR, and the
- object will be constructed in VAR. */
- if (! TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (p)))
- DECL_INITIAL (var) = value;
- else
- {
- /* Even if P was TREE_READONLY, the new VAR should not be.
- In the original code, we would have constructed a
- temporary, and then the function body would have never
- changed the value of P. However, now, we will be
- constructing VAR directly. The constructor body may
- change its value multiple times as it is being
- constructed. Therefore, it must not be TREE_READONLY;
- the back-end assumes that TREE_READONLY variable is
- assigned to only once. */
- TREE_READONLY (var) = 0;
-
- /* Build a run-time initialization. */
- init_stmt = build_stmt (EXPR_STMT,
- build (INIT_EXPR, TREE_TYPE (p),
- var, value));
- /* Add this initialization to the list. Note that we want the
- declaration *after* the initialization because we are going
- to reverse all the initialization statements below. */
- TREE_CHAIN (init_stmt) = init_stmts;
- init_stmts = init_stmt;
- }
- }
-
- /* The initialization statements have been built up in reverse
- order. Straighten them out now. */
- return nreverse (init_stmts);
-}
-
-/* Declare a return variable to replace the RESULT_DECL for the
- function we are calling. An appropriate DECL_STMT is returned.
- The USE_STMT is filled in to contain a use of the declaration to
- indicate the return value of the function. */
-
-static tree
-declare_return_variable (id, use_stmt)
- struct inline_data *id;
- tree *use_stmt;
-{
- tree fn = VARRAY_TOP_TREE (id->fns);
- tree result = DECL_RESULT (fn);
- tree var;
- int need_return_decl = 1;
-
- /* We don't need to do anything for functions that don't return
- anything. */
- if (!result || VOID_TYPE_P (TREE_TYPE (result)))
- {
- *use_stmt = NULL_TREE;
- return NULL_TREE;
- }
-
- var = LANG_COPY_RES_DECL_FOR_INLINING (result, fn, VARRAY_TREE (id->fns, 0),
- id->decl_map, &need_return_decl,
- &id->target_exprs);
-
- /* Register the VAR_DECL as the equivalent for the RESULT_DECL; that
- way, when the RESULT_DECL is encountered, it will be
- automatically replaced by the VAR_DECL. */
- splay_tree_insert (id->decl_map,
- (splay_tree_key) result,
- (splay_tree_value) var);
-
- /* Build the USE_STMT. */
- *use_stmt = build_stmt (EXPR_STMT, var);
-
- /* Build the declaration statement if FN does not return an
- aggregate. */
- if (need_return_decl)
- return build_stmt (DECL_STMT, var);
- /* If FN does return an aggregate, there's no need to declare the
- return variable; we're using a variable in our caller's frame. */
- else
- return NULL_TREE;
-}
-
-/* Returns non-zero if FN is a function that can be inlined. */
-
-static int
-inlinable_function_p (fn, id)
- tree fn;
- inline_data *id;
-{
- int inlinable;
-
- /* If we've already decided this function shouldn't be inlined,
- there's no need to check again. */
- if (DECL_UNINLINABLE (fn))
- return 0;
-
- /* Assume it is not inlinable. */
- inlinable = 0;
-
- /* If we're not inlining things, then nothing is inlinable. */
- if (!flag_inline_trees)
- ;
- /* If the function was not declared `inline', then we don't inline
- it. */
- else if (!DECL_INLINE (fn))
- ;
- /* We can't inline functions that are too big. Only allow a single
- function to eat up half of our budget. Make special allowance
- for extern inline functions, though. */
- else if (! LANG_DISREGARD_INLINE_LIMITS (fn)
- && DECL_NUM_STMTS (fn) * INSNS_PER_STMT > MAX_INLINE_INSNS / 2)
- ;
- /* All is well. We can inline this function. Traditionally, GCC
- has refused to inline functions using alloca, or functions whose
- values are returned in a PARALLEL, and a few other such obscure
- conditions. We are not equally constrained at the tree level. */
- else
- inlinable = 1;
-
- /* Squirrel away the result so that we don't have to check again. */
- DECL_UNINLINABLE (fn) = !inlinable;
-
- /* Even if this function is not itself too big to inline, it might
- be that we've done so much inlining already that we don't want to
- risk too much inlining any more and thus halve the acceptable
- size. */
- if (! LANG_DISREGARD_INLINE_LIMITS (fn)
- && ((DECL_NUM_STMTS (fn) + id->inlined_stmts) * INSNS_PER_STMT
- > MAX_INLINE_INSNS)
- && DECL_NUM_STMTS (fn) * INSNS_PER_STMT > MAX_INLINE_INSNS / 4)
- inlinable = 0;
-
- if (inlinable && LANG_CANNOT_INLINE_TREE_FN (&fn))
- inlinable = 0;
-
- /* If we don't have the function body available, we can't inline
- it. */
- if (!DECL_SAVED_TREE (fn))
- inlinable = 0;
-
- /* Check again, language hooks may have modified it. */
- if (! inlinable || DECL_UNINLINABLE (fn))
- return 0;
-
- /* Don't do recursive inlining, either. We don't record this in
- DECL_UNINLINABLE; we may be able to inline this function later. */
- if (inlinable)
- {
- size_t i;
-
- for (i = 0; i < VARRAY_ACTIVE_SIZE (id->fns); ++i)
- if (VARRAY_TREE (id->fns, i) == fn)
- return 0;
-
- if (inlinable && DECL_INLINED_FNS (fn))
- {
- int j;
- tree inlined_fns = DECL_INLINED_FNS (fn);
-
- for (j = 0; j < TREE_VEC_LENGTH (inlined_fns); ++j)
- if (TREE_VEC_ELT (inlined_fns, j) == VARRAY_TREE (id->fns, 0))
- return 0;
- }
- }
-
- /* Return the result. */
- return inlinable;
-}
-
-/* If *TP is a CALL_EXPR, replace it with its inline expansion. */
-
-static tree
-expand_call_inline (tp, walk_subtrees, data)
- tree *tp;
- int *walk_subtrees;
- void *data;
-{
- inline_data *id;
- tree t;
- tree expr;
- tree chain;
- tree fn;
- tree scope_stmt;
- tree use_stmt;
- tree arg_inits;
- tree *inlined_body;
- splay_tree st;
-
- /* See what we've got. */
- id = (inline_data *) data;
- t = *tp;
-
- /* Recurse, but letting recursive invocations know that we are
- inside the body of a TARGET_EXPR. */
- if (TREE_CODE (*tp) == TARGET_EXPR)
- {
- int i, len = first_rtl_op (TARGET_EXPR);
-
- /* We're walking our own subtrees. */
- *walk_subtrees = 0;
-
- /* Push *TP on the stack of pending TARGET_EXPRs. */
- VARRAY_PUSH_TREE (id->target_exprs, *tp);
-
- /* Actually walk over them. This loop is the body of
- walk_trees, omitting the case where the TARGET_EXPR
- itself is handled. */
- for (i = 0; i < len; ++i)
- {
- if (i == 2)
- ++id->in_target_cleanup_p;
- walk_tree (&TREE_OPERAND (*tp, i), expand_call_inline, data,
- id->tree_pruner);
- if (i == 2)
- --id->in_target_cleanup_p;
- }
-
- /* We're done with this TARGET_EXPR now. */
- VARRAY_POP (id->target_exprs);
-
- return NULL_TREE;
- }
-
- if (TYPE_P (t))
- /* Because types were not copied in copy_body, CALL_EXPRs beneath
- them should not be expanded. This can happen if the type is a
- dynamic array type, for example. */
- *walk_subtrees = 0;
-
- /* From here on, we're only interested in CALL_EXPRs. */
- if (TREE_CODE (t) != CALL_EXPR)
- return NULL_TREE;
-
- /* First, see if we can figure out what function is being called.
- If we cannot, then there is no hope of inlining the function. */
- fn = get_callee_fndecl (t);
- if (!fn)
- return NULL_TREE;
-
- /* Don't try to inline functions that are not well-suited to
- inlining. */
- if (!inlinable_function_p (fn, id))
- return NULL_TREE;
-
- /* Set the current filename and line number to the function we are
- inlining so that when we create new _STMT nodes here they get
- line numbers corresponding to the function we are calling. We
- wrap the whole inlined body in an EXPR_WITH_FILE_AND_LINE as well
- because individual statements don't record the filename. */
- push_srcloc (fn->decl.filename, fn->decl.linenum);
-
- /* Build a statement-expression containing code to initialize the
- arguments, the actual inline expansion of the body, and a label
- for the return statements within the function to jump to. The
- type of the statement expression is the return type of the
- function call. */
- expr = build1 (STMT_EXPR, TREE_TYPE (TREE_TYPE (fn)), NULL_TREE);
-
- /* Local declarations will be replaced by their equivalents in this
- map. */
- st = id->decl_map;
- id->decl_map = splay_tree_new (splay_tree_compare_pointers,
- NULL, NULL);
-
- /* Initialize the parameters. */
- arg_inits = initialize_inlined_parameters (id, TREE_OPERAND (t, 1), fn);
- /* Expand any inlined calls in the initializers. Do this before we
- push FN on the stack of functions we are inlining; we want to
- inline calls to FN that appear in the initializers for the
- parameters. */
- expand_calls_inline (&arg_inits, id);
- /* And add them to the tree. */
- STMT_EXPR_STMT (expr) = chainon (STMT_EXPR_STMT (expr), arg_inits);
-
- /* Record the function we are about to inline so that we can avoid
- recursing into it. */
- VARRAY_PUSH_TREE (id->fns, fn);
-
- /* Record the function we are about to inline if optimize_function
- has not been called on it yet and we don't have it in the list. */
- if (! DECL_INLINED_FNS (fn))
- {
- int i;
-
- for (i = VARRAY_ACTIVE_SIZE (id->inlined_fns) - 1; i >= 0; i--)
- if (VARRAY_TREE (id->inlined_fns, i) == fn)
- break;
- if (i < 0)
- VARRAY_PUSH_TREE (id->inlined_fns, fn);
- }
-
- /* Return statements in the function body will be replaced by jumps
- to the RET_LABEL. */
- id->ret_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
- DECL_CONTEXT (id->ret_label) = VARRAY_TREE (id->fns, 0);
-
- /* Create a block to put the parameters in. We have to do this
- after the parameters have been remapped because remapping
- parameters is different from remapping ordinary variables. */
- scope_stmt = build_stmt (SCOPE_STMT, DECL_INITIAL (fn));
- SCOPE_BEGIN_P (scope_stmt) = 1;
- SCOPE_NO_CLEANUPS_P (scope_stmt) = 1;
- remap_block (scope_stmt, DECL_ARGUMENTS (fn), id);
- TREE_CHAIN (scope_stmt) = STMT_EXPR_STMT (expr);
- STMT_EXPR_STMT (expr) = scope_stmt;
-
- /* Tell the debugging backends that this block represents the
- outermost scope of the inlined function. */
- if (SCOPE_STMT_BLOCK (scope_stmt))
- BLOCK_ABSTRACT_ORIGIN (SCOPE_STMT_BLOCK (scope_stmt)) = DECL_ORIGIN (fn);
-
- /* Declare the return variable for the function. */
- STMT_EXPR_STMT (expr)
- = chainon (STMT_EXPR_STMT (expr),
- declare_return_variable (id, &use_stmt));
-
- /* After we've initialized the parameters, we insert the body of the
- function itself. */
- inlined_body = &STMT_EXPR_STMT (expr);
- while (*inlined_body)
- inlined_body = &TREE_CHAIN (*inlined_body);
- *inlined_body = copy_body (id);
-
- /* Close the block for the parameters. */
- scope_stmt = build_stmt (SCOPE_STMT, DECL_INITIAL (fn));
- SCOPE_NO_CLEANUPS_P (scope_stmt) = 1;
- if (! DECL_INITIAL (fn)
- || TREE_CODE (DECL_INITIAL (fn)) != BLOCK)
- abort ();
- remap_block (scope_stmt, NULL_TREE, id);
- STMT_EXPR_STMT (expr)
- = chainon (STMT_EXPR_STMT (expr), scope_stmt);
-
- /* After the body of the function comes the RET_LABEL. This must come
- before we evaluate the returned value below, because that evalulation
- may cause RTL to be generated. */
- STMT_EXPR_STMT (expr)
- = chainon (STMT_EXPR_STMT (expr),
- build_stmt (LABEL_STMT, id->ret_label));
-
- /* Finally, mention the returned value so that the value of the
- statement-expression is the returned value of the function. */
- STMT_EXPR_STMT (expr) = chainon (STMT_EXPR_STMT (expr), use_stmt);
-
- /* Clean up. */
- splay_tree_delete (id->decl_map);
- id->decl_map = st;
-
- /* The new expression has side-effects if the old one did. */
- TREE_SIDE_EFFECTS (expr) = TREE_SIDE_EFFECTS (t);
-
- /* Replace the call by the inlined body. Wrap it in an
- EXPR_WITH_FILE_LOCATION so that we'll get debugging line notes
- pointing to the right place. */
- chain = TREE_CHAIN (*tp);
- *tp = build_expr_wfl (expr, DECL_SOURCE_FILE (fn), DECL_SOURCE_LINE (fn),
- /*col=*/0);
- EXPR_WFL_EMIT_LINE_NOTE (*tp) = 1;
- TREE_CHAIN (*tp) = chain;
- pop_srcloc ();
-
- /* If the value of the new expression is ignored, that's OK. We
- don't warn about this for CALL_EXPRs, so we shouldn't warn about
- the equivalent inlined version either. */
- TREE_USED (*tp) = 1;
-
- /* Our function now has more statements than it did before. */
- DECL_NUM_STMTS (VARRAY_TREE (id->fns, 0)) += DECL_NUM_STMTS (fn);
- id->inlined_stmts += DECL_NUM_STMTS (fn);
-
- /* Recurse into the body of the just inlined function. */
- expand_calls_inline (inlined_body, id);
- VARRAY_POP (id->fns);
-
- /* If we've returned to the top level, clear out the record of how
- much inlining has been done. */
- if (VARRAY_ACTIVE_SIZE (id->fns) == id->first_inlined_fn)
- id->inlined_stmts = 0;
-
- /* Don't walk into subtrees. We've already handled them above. */
- *walk_subtrees = 0;
-
- /* Keep iterating. */
- return NULL_TREE;
-}
-
-/* Walk over the entire tree *TP, replacing CALL_EXPRs with inline
- expansions as appropriate. */
-
-static void
-expand_calls_inline (tp, id)
- tree *tp;
- inline_data *id;
-{
- /* Search through *TP, replacing all calls to inline functions by
- appropriate equivalents. Use walk_tree in no-duplicates mode
- to avoid exponential time complexity. (We can't just use
- walk_tree_without_duplicates, because of the special TARGET_EXPR
- handling in expand_calls. The hash table is set up in
- optimize_function. */
- walk_tree (tp, expand_call_inline, id, id->tree_pruner);
-}
-
-/* Expand calls to inline functions in the body of FN. */
-
-void
-optimize_inline_calls (fn)
- tree fn;
-{
- inline_data id;
- tree prev_fn;
-
- /* Clear out ID. */
- memset (&id, 0, sizeof (id));
-
- /* Don't allow recursion into FN. */
- VARRAY_TREE_INIT (id.fns, 32, "fns");
- VARRAY_PUSH_TREE (id.fns, fn);
- /* Or any functions that aren't finished yet. */
- prev_fn = NULL_TREE;
- if (current_function_decl)
- {
- VARRAY_PUSH_TREE (id.fns, current_function_decl);
- prev_fn = current_function_decl;
- }
-
- prev_fn = LANG_ADD_PENDING_FN_DECLS (&id.fns, prev_fn);
-
- /* Create the stack of TARGET_EXPRs. */
- VARRAY_TREE_INIT (id.target_exprs, 32, "target_exprs");
-
- /* Create the list of functions this call will inline. */
- VARRAY_TREE_INIT (id.inlined_fns, 32, "inlined_fns");
-
- /* Keep track of the low-water mark, i.e., the point where the first
- real inlining is represented in ID.FNS. */
- id.first_inlined_fn = VARRAY_ACTIVE_SIZE (id.fns);
-
- /* Replace all calls to inline functions with the bodies of those
- functions. */
- id.tree_pruner = htab_create (37, htab_hash_pointer,
- htab_eq_pointer, NULL);
- expand_calls_inline (&DECL_SAVED_TREE (fn), &id);
-
- /* Clean up. */
- htab_delete (id.tree_pruner);
- VARRAY_FREE (id.fns);
- VARRAY_FREE (id.target_exprs);
- if (DECL_LANG_SPECIFIC (fn))
- {
- tree ifn = make_tree_vec (VARRAY_ACTIVE_SIZE (id.inlined_fns));
-
- memcpy (&TREE_VEC_ELT (ifn, 0), &VARRAY_TREE (id.inlined_fns, 0),
- VARRAY_ACTIVE_SIZE (id.inlined_fns) * sizeof (tree));
- DECL_INLINED_FNS (fn) = ifn;
- }
- VARRAY_FREE (id.inlined_fns);
-}
-
/* Optimize the body of FN. */
void
@@ -1070,38 +133,6 @@ update_cloned_parm (parm, cloned_parm)
DECL_SOURCE_LINE (cloned_parm) = DECL_SOURCE_LINE (parm);
}
-/* FN is a function that has a complete body, and CLONE is a function
- whose body is to be set to a copy of FN, mapping argument
- declarations according to the ARG_MAP splay_tree. */
-
-void
-clone_body (clone, fn, arg_map)
- tree clone, fn;
- void *arg_map;
-{
- inline_data id;
-
- /* Clone the body, as if we were making an inline call. But, remap
- the parameters in the callee to the parameters of caller. If
- there's an in-charge parameter, map it to an appropriate
- constant. */
- memset (&id, 0, sizeof (id));
- VARRAY_TREE_INIT (id.fns, 2, "fns");
- VARRAY_PUSH_TREE (id.fns, clone);
- VARRAY_PUSH_TREE (id.fns, fn);
- id.decl_map = (splay_tree)arg_map;
-
- /* Cloning is treated slightly differently from inlining. Set
- CLONING_P so that it's clear which operation we're performing. */
- id.cloning_p = true;
-
- /* Actually copy the body. */
- TREE_CHAIN (DECL_SAVED_TREE (clone)) = copy_body (&id);
-
- /* Clean up. */
- VARRAY_FREE (id.fns);
-}
-
/* FN is a function that has a complete body. Clone the body as
necessary. Returns non-zero if there's no longer any need to
process the main body. */
diff --git a/gcc/cp/tree.c b/gcc/cp/tree.c
index ec51eaa7e415..b5fc508664ef 100644
--- a/gcc/cp/tree.c
+++ b/gcc/cp/tree.c
@@ -1153,241 +1153,6 @@ bind_template_template_parm (t, newargs)
return t2;
}
-/* Apply FUNC to all the sub-trees of TP in a pre-order traversal.
- FUNC is called with the DATA and the address of each sub-tree. If
- FUNC returns a non-NULL value, the traversal is aborted, and the
- value returned by FUNC is returned. If HTAB is non-NULL it is used
- to record the nodes visited, and to avoid visiting a node more than
- once. */
-
-tree
-walk_tree (tp, func, data, htab_)
- tree *tp;
- walk_tree_fn func;
- void *data;
- void *htab_;
-{
- htab_t htab = (htab_t) htab_;
- enum tree_code code;
- int walk_subtrees;
- tree result;
-
-#define WALK_SUBTREE(NODE) \
- do \
- { \
- result = walk_tree (&(NODE), func, data, htab); \
- if (result) \
- return result; \
- } \
- while (0)
-
- /* Skip empty subtrees. */
- if (!*tp)
- return NULL_TREE;
-
- if (htab)
- {
- void **slot;
-
- /* Don't walk the same tree twice, if the user has requested
- that we avoid doing so. */
- if (htab_find (htab, *tp))
- return NULL_TREE;
- /* If we haven't already seen this node, add it to the table. */
- slot = htab_find_slot (htab, *tp, INSERT);
- *slot = *tp;
- }
-
- /* Call the function. */
- walk_subtrees = 1;
- result = (*func) (tp, &walk_subtrees, data);
-
- /* If we found something, return it. */
- if (result)
- return result;
-
- code = TREE_CODE (*tp);
-
- /* Even if we didn't, FUNC may have decided that there was nothing
- interesting below this point in the tree. */
- if (!walk_subtrees)
- {
- if (statement_code_p (code) || code == TREE_LIST
- || LANG_TREE_CHAIN_MATTERS_P (*tp))
- /* But we still need to check our siblings. */
- return walk_tree (&TREE_CHAIN (*tp), func, data, htab);
- else
- return NULL_TREE;
- }
-
- /* Handle common cases up front. */
- if (IS_EXPR_CODE_CLASS (TREE_CODE_CLASS (code))
- || TREE_CODE_CLASS (code) == 'r'
- || TREE_CODE_CLASS (code) == 's')
- {
- int i, len;
-
- /* Set lineno here so we get the right instantiation context
- if we call instantiate_decl from inlinable_function_p. */
- if (statement_code_p (code) && !STMT_LINENO_FOR_FN_P (*tp))
- lineno = STMT_LINENO (*tp);
-
- /* Walk over all the sub-trees of this operand. */
- len = first_rtl_op (code);
- /* TARGET_EXPRs are peculiar: operands 1 and 3 can be the same.
- But, we only want to walk once. */
- if (code == TARGET_EXPR
- && TREE_OPERAND (*tp, 3) == TREE_OPERAND (*tp, 1))
- --len;
- /* Go through the subtrees. We need to do this in forward order so
- that the scope of a FOR_EXPR is handled properly. */
- for (i = 0; i < len; ++i)
- WALK_SUBTREE (TREE_OPERAND (*tp, i));
-
- /* For statements, we also walk the chain so that we cover the
- entire statement tree. */
- if (statement_code_p (code))
- {
- if (code == DECL_STMT
- && DECL_STMT_DECL (*tp)
- && DECL_P (DECL_STMT_DECL (*tp)))
- {
- /* Walk the DECL_INITIAL and DECL_SIZE. We don't want to walk
- into declarations that are just mentioned, rather than
- declared; they don't really belong to this part of the tree.
- And, we can see cycles: the initializer for a declaration can
- refer to the declaration itself. */
- WALK_SUBTREE (DECL_INITIAL (DECL_STMT_DECL (*tp)));
- WALK_SUBTREE (DECL_SIZE (DECL_STMT_DECL (*tp)));
- WALK_SUBTREE (DECL_SIZE_UNIT (DECL_STMT_DECL (*tp)));
- }
-
- /* This can be tail-recursion optimized if we write it this way. */
- return walk_tree (&TREE_CHAIN (*tp), func, data, htab);
- }
-
- /* We didn't find what we were looking for. */
- return NULL_TREE;
- }
- else if (TREE_CODE_CLASS (code) == 'd')
- {
- WALK_SUBTREE (TREE_TYPE (*tp));
-
- /* We didn't find what we were looking for. */
- return NULL_TREE;
- }
-
- result = LANG_WALK_SUBTREES (tp, &walk_subtrees, func, data, htab);
- if (result || ! walk_subtrees)
- return result;
-
- /* Not one of the easy cases. We must explicitly go through the
- children. */
- switch (code)
- {
- case ERROR_MARK:
- case IDENTIFIER_NODE:
- case INTEGER_CST:
- case REAL_CST:
- case STRING_CST:
- case REAL_TYPE:
- case COMPLEX_TYPE:
- case VECTOR_TYPE:
- case VOID_TYPE:
- case BOOLEAN_TYPE:
- case UNION_TYPE:
- case ENUMERAL_TYPE:
- case BLOCK:
- case RECORD_TYPE:
- /* None of thse have subtrees other than those already walked
- above. */
- break;
-
- case POINTER_TYPE:
- case REFERENCE_TYPE:
- WALK_SUBTREE (TREE_TYPE (*tp));
- break;
-
- case TREE_LIST:
- WALK_SUBTREE (TREE_VALUE (*tp));
- WALK_SUBTREE (TREE_CHAIN (*tp));
- break;
-
- case TREE_VEC:
- {
- int len = TREE_VEC_LENGTH (*tp);
- while (len--)
- WALK_SUBTREE (TREE_VEC_ELT (*tp, len));
- }
- break;
-
- case COMPLEX_CST:
- WALK_SUBTREE (TREE_REALPART (*tp));
- WALK_SUBTREE (TREE_IMAGPART (*tp));
- break;
-
- case CONSTRUCTOR:
- WALK_SUBTREE (CONSTRUCTOR_ELTS (*tp));
- break;
-
- case METHOD_TYPE:
- WALK_SUBTREE (TYPE_METHOD_BASETYPE (*tp));
- /* Fall through. */
-
- case FUNCTION_TYPE:
- WALK_SUBTREE (TREE_TYPE (*tp));
- {
- tree arg = TYPE_ARG_TYPES (*tp);
-
- /* We never want to walk into default arguments. */
- for (; arg; arg = TREE_CHAIN (arg))
- WALK_SUBTREE (TREE_VALUE (arg));
- }
- break;
-
- case ARRAY_TYPE:
- WALK_SUBTREE (TREE_TYPE (*tp));
- WALK_SUBTREE (TYPE_DOMAIN (*tp));
- break;
-
- case INTEGER_TYPE:
- WALK_SUBTREE (TYPE_MIN_VALUE (*tp));
- WALK_SUBTREE (TYPE_MAX_VALUE (*tp));
- break;
-
- case OFFSET_TYPE:
- WALK_SUBTREE (TREE_TYPE (*tp));
- WALK_SUBTREE (TYPE_OFFSET_BASETYPE (*tp));
- break;
-
- default:
- abort ();
- }
-
- /* We didn't find what we were looking for. */
- return NULL_TREE;
-
-#undef WALK_SUBTREE
-}
-
-/* Like walk_tree, but does not walk duplicate nodes more than
- once. */
-
-tree
-walk_tree_without_duplicates (tp, func, data)
- tree *tp;
- walk_tree_fn func;
- void *data;
-{
- tree result;
- htab_t htab;
-
- htab = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL);
- result = walk_tree (tp, func, data, htab);
- htab_delete (htab);
- return result;
-}
-
/* Called from count_trees via walk_tree. */
static tree
@@ -1512,51 +1277,6 @@ no_linkage_check (t)
return NULL_TREE;
}
-/* Passed to walk_tree. Copies the node pointed to, if appropriate. */
-
-tree
-copy_tree_r (tp, walk_subtrees, data)
- tree *tp;
- int *walk_subtrees;
- void *data ATTRIBUTE_UNUSED;
-{
- enum tree_code code = TREE_CODE (*tp);
-
- /* We make copies of most nodes. */
- if (IS_EXPR_CODE_CLASS (TREE_CODE_CLASS (code))
- || TREE_CODE_CLASS (code) == 'r'
- || TREE_CODE_CLASS (code) == 'c'
- || TREE_CODE_CLASS (code) == 's'
- || code == TREE_LIST
- || code == TREE_VEC
- || LANG_TREE_CHAIN_MATTERS_P (*tp))
- {
- /* Because the chain gets clobbered when we make a copy, we save it
- here. */
- tree chain = TREE_CHAIN (*tp);
-
- /* Copy the node. */
- *tp = copy_node (*tp);
-
- /* Now, restore the chain, if appropriate. That will cause
- walk_tree to walk into the chain as well. */
- if (code == PARM_DECL || code == TREE_LIST
- || LANG_TREE_CHAIN_MATTERS_P (*tp)
- || statement_code_p (code))
- TREE_CHAIN (*tp) = chain;
-
- /* For now, we don't update BLOCKs when we make copies. So, we
- have to nullify all scope-statements. */
- if (TREE_CODE (*tp) == SCOPE_STMT)
- SCOPE_STMT_BLOCK (*tp) = NULL_TREE;
- }
- else if (TREE_CODE_CLASS (code) == 't')
- /* There's no need to copy types, or anything beneath them. */
- *walk_subtrees = 0;
-
- return NULL_TREE;
-}
-
#ifdef GATHER_STATISTICS
extern int depth_reached;
#endif
@@ -2565,48 +2285,6 @@ init_tree ()
mark_tree_hashtable);
}
-/* The SAVE_EXPR pointed to by TP is being copied. If ST contains
- information indicating to what new SAVE_EXPR this one should be
- mapped, use that one. Otherwise, create a new node and enter it in
- ST. FN is the function into which the copy will be placed. */
-
-void
-remap_save_expr (tp, st_, fn, walk_subtrees)
- tree *tp;
- void *st_;
- tree fn;
- int *walk_subtrees;
-{
- splay_tree st = (splay_tree) st_;
- splay_tree_node n;
-
- /* See if we already encountered this SAVE_EXPR. */
- n = splay_tree_lookup (st, (splay_tree_key) *tp);
-
- /* If we didn't already remap this SAVE_EXPR, do so now. */
- if (!n)
- {
- tree t = copy_node (*tp);
-
- /* The SAVE_EXPR is now part of the function into which we
- are inlining this body. */
- SAVE_EXPR_CONTEXT (t) = fn;
- /* And we haven't evaluated it yet. */
- SAVE_EXPR_RTL (t) = NULL_RTX;
- /* Remember this SAVE_EXPR. */
- n = splay_tree_insert (st,
- (splay_tree_key) *tp,
- (splay_tree_value) t);
- }
- else
- /* We've already walked into this SAVE_EXPR, so we needn't do it
- again. */
- *walk_subtrees = 0;
-
- /* Replace this SAVE_EXPR with the copy. */
- *tp = (tree) n->value;
-}
-
/* Called via walk_tree. If *TP points to a DECL_STMT for a local
declaration, copies the declaration and enters it in the splay_tree
pointed to by DATA (which is really a `splay_tree *'). */
--
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