diff options
Diffstat (limited to 'gcc/cgraph.c')
| -rw-r--r-- | gcc/cgraph.c | 40 |
1 files changed, 37 insertions, 3 deletions
diff --git a/gcc/cgraph.c b/gcc/cgraph.c index 1a078f6..bb035b2 100644 --- a/gcc/cgraph.c +++ b/gcc/cgraph.c @@ -48,7 +48,7 @@ bool cgraph_global_info_ready = false; static struct cgraph_edge *create_edge PARAMS ((struct cgraph_node *, struct cgraph_node *)); -static void remove_edge PARAMS ((struct cgraph_node *, struct cgraph_node *)); +static void cgraph_remove_edge PARAMS ((struct cgraph_node *, struct cgraph_node *)); static hashval_t hash_node PARAMS ((const PTR)); static int eq_node PARAMS ((const PTR, const PTR)); @@ -95,6 +95,9 @@ cgraph_node (decl) node = xcalloc (sizeof (*node), 1); node->decl = decl; node->next = cgraph_nodes; + if (cgraph_nodes) + cgraph_nodes->previous = node; + node->previous = NULL; cgraph_nodes = node; cgraph_n_nodes++; *slot = node; @@ -127,7 +130,7 @@ create_edge (caller, callee) /* Remove the edge from CALLER to CALLEE in the cgraph. */ static void -remove_edge (caller, callee) +cgraph_remove_edge (caller, callee) struct cgraph_node *caller, *callee; { struct cgraph_edge **edge, **edge2; @@ -146,6 +149,37 @@ remove_edge (caller, callee) *edge2 = (*edge2)->next_callee; } +/* Remove the node from cgraph. */ + +void +cgraph_remove_node (node) + struct cgraph_node *node; +{ + while (node->callers) + cgraph_remove_edge (node->callers->caller, node); + while (node->callees) + cgraph_remove_edge (node, node->callees->callee); + while (node->nested) + cgraph_remove_node (node->nested); + if (node->origin) + { + struct cgraph_node **node2 = &node->origin->nested; + + while (*node2 != node) + node2 = &(*node2)->next_nested; + *node2 = node->next_nested; + } + if (node->previous) + node->previous->next = node->next; + else + cgraph_nodes = node; + if (node->next) + node->next->previous = node->previous; + DECL_SAVED_TREE (node->decl) = NULL; + /* Do not free the structure itself so the walk over chain can continue. */ +} + + /* Record call from CALLER to CALLEE */ struct cgraph_edge * @@ -159,7 +193,7 @@ void cgraph_remove_call (caller, callee) tree caller, callee; { - remove_edge (cgraph_node (caller), cgraph_node (callee)); + cgraph_remove_edge (cgraph_node (caller), cgraph_node (callee)); } /* Return true when CALLER_DECL calls CALLEE_DECL. */ |