X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fir%2Firgmod.h;h=55cdd53a9ea7c42dae3e053f14253f200148d6fc;hb=a5c804d0096b70e513d11c7770e15acd76b070ef;hp=adc5494c42188151f8ede4bb9f68267641f9266a;hpb=3a54957505decc179c0951298bce7e0361a79462;p=libfirm diff --git a/ir/ir/irgmod.h b/ir/ir/irgmod.h index adc5494c4..55cdd53a9 100644 --- a/ir/ir/irgmod.h +++ b/ir/ir/irgmod.h @@ -25,9 +25,8 @@ # include "irnode.h" -/** Exchanges two nodes by conserving edges leaving old (i.e., pointers - pointing to old). Turns the old node into an Id. Requires that - current_ir_graph is set properly. */ +/** Exchanges two nodes by conserving edges leaving old (i.e., + pointers pointing to old). Turns the old node into an Id. */ void exchange (ir_node *old, ir_node *nw); /** Turns a node into a "useless" Tuple. @@ -44,25 +43,31 @@ void exchange (ir_node *old, ir_node *nw); void turn_into_tuple (ir_node *node, int arity); /** Walks over the passed ir graph and collects all Phi nodes as a - list built with the link field in their corresponding block. - Further it collects all Proj nodes in a list of the node producing - the tuple. In case of nested tuples the Projs are collected in the - node producing the outermost Tuple. */ + * list built with the link field in their corresponding block. + * Further it collects all Proj nodes in a list of the node producing + * the tuple. In case of nested tuples the Projs are collected in the + * node producing the outermost Tuple. + * All other link fields are cleared afterwards. + */ void collect_phiprojs(ir_graph *irg); /** Parts a block into two. This is useful to insert other blocks within a - given block. - Adds a new block (new_block) in the control flow before the block - (old_block) of node. Moves node and its predecessors from old_block to - new_block. Moves all Projs that depend on moved nodes and are in old_block - to new_block. Moves all Phi nodes from old_block to new_block. To achieve - this the routine assumes that all Phi nodes are in a list (using the link - field) in the link field of old_block. Further it assumes that all Proj nodes - are accessible by the link field of the nodes producing the Tuple. This - can be established by collect_phiprojs(). part_block conserves this property. - Adds a Jmp node to new_block that jumps to old_block. - Assumes that node is contained in current_ir_graph. Sets current_block in - this ir_graph to new_block. */ + * given block. + * + * Adds a new block (new_block) in the control flow before the block + * (old_block) of node. Moves node and its predecessors from old_block to + * new_block. Moves all Projs that depend on moved nodes and are in old_block + * to new_block. Moves all Phi nodes from old_block to new_block. To achieve + * this the routine assumes that all Phi nodes are in a list (using the link + * field) in the link field of old_block. Further it assumes that all Proj nodes + * are accessible by the link field of the nodes producing the Tuple. This + * can be established by collect_phiprojs(). part_block conserves this property. + * Adds a Jmp node to new_block that jumps to old_block. + * Assumes that node is contained in current_ir_graph. Sets current_block in + * this ir_graph to new_block. + * + * @param node The node were to break the block + */ void part_block(ir_node *node); #endif /* ifndef _IRGMOD_H_ */