added ir/opt include

[libfirm] / ir / be / benode_t.h

diff --git a/ir/be/benode_t.h b/ir/be/benode_t.h
index aa426e6..f550185 100644 (file)
--- a/ir/be/benode_t.h
+++ b/ir/be/benode_t.h
@@ -14,6 +14,8 @@
 
 #include "firm_config.h"
 
+#include <limits.h>
+
 #include "irmode.h"
 #include "irnode.h"
 #include "entity_t.h"
@@ -37,6 +39,7 @@ extern ir_op *op_be_Call;
 extern ir_op *op_be_Return;
 extern ir_op *op_be_IncSP;
 extern ir_op *op_be_AddSP;
+extern ir_op *op_be_SubSP;
 extern ir_op *op_be_SetSP;
 extern ir_op *op_be_RegParams;
 extern ir_op *op_be_StackParam;
@@ -57,6 +60,7 @@ typedef enum {
        beo_Call,
        beo_Return,
        beo_AddSP,
+       beo_SubSP,
        beo_IncSP,
        beo_SetSP,
        beo_RegParams,
@@ -68,12 +72,6 @@ typedef enum {
        beo_Last
 } be_opcode_t;
 
-/** Expresses the direction of the stack pointer increment of IncSP nodes. */
-typedef enum {
-       be_stack_dir_expand = 0,
-       be_stack_dir_shrink = 1
-} be_stack_dir_t;
-
 /** Not used yet. */
 typedef enum {
        be_frame_flag_spill = 1,
@@ -85,7 +83,8 @@ typedef enum {
  * A "symbolic constant" for the size of the stack frame to use with IncSP nodes.
  * It gets back-patched to the real size as soon it is known.
  */
-#define BE_STACK_FRAME_SIZE ((unsigned) -1)
+#define BE_STACK_FRAME_SIZE_EXPAND INT_MAX
+#define BE_STACK_FRAME_SIZE_SHRINK INT_MIN
 
 /**
  * Determines if irn is a be_node.
@@ -184,6 +183,35 @@ enum {
  */
 ir_node *be_new_AddSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, ir_node *sz);
 
+/**
+ * Position numbers for the be_SubSP inputs
+ */
+enum {
+       be_pos_SubSP_old_sp = 0,
+       be_pos_SubSP_size   = 1,
+       be_pos_SubSP_last   = 2
+};
+
+enum {
+       pn_be_SubSP_res  = 0,
+       pn_be_SubSP_M    = 1,
+       pn_be_SubSP_last = 2
+};
+
+/**
+ * Make a new SubSP node.
+ * A SubSP node expresses a decrease of the stack pointer in the direction the stack
+ * grows. In contrast to IncSP, the amount of bytes the stack pointer is grown, is not
+ * given by a constant but an ordinary Firm node.
+ * @param sp     The stack pointer register.
+ * @param irg    The graph.
+ * @param bl     The block.
+ * @param old_sp The node representing the old stack pointer value.
+ * @param sz     The node expressing the size by which the stack pointer shall be grown.
+ * @return       A new DecSP node.
+ */
+ir_node *be_new_SubSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, ir_node *sz);
+
 ir_node *be_new_SetSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, ir_node *operand, ir_node *mem);
 
 /**
@@ -192,13 +220,13 @@ ir_node *be_new_SetSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_
  * @param irg    The graph to insert the node to.
  * @param bl     The block to insert the node into.
  * @param old_sp The node defining the former stack pointer.
- * @param amount The mount of bytes the stack pointer shall be increased/decreased.
+ * @param amount The mount of bytes the stack shall be expanded/shrinked (see set_IncSP_offset)
  * @param dir    The direction in which the stack pointer shall be modified:
  *               Along the stack's growing direction or against.
  * @return       A new stack pointer increment/decrement node.
  * @note         This node sets a register constraint to the @p sp register on its output.
  */
-ir_node *be_new_IncSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, ir_node *mem, unsigned amount, be_stack_dir_t dir);
+ir_node *be_new_IncSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, int offset);
 
 /** Returns the previous node that computes the stack pointer. */
 ir_node *be_get_IncSP_pred(ir_node *incsp);
@@ -206,20 +234,16 @@ ir_node *be_get_IncSP_pred(ir_node *incsp);
 /** Sets the previous node that computes the stack pointer. */
 void     be_set_IncSP_pred(ir_node *incsp, ir_node *pred);
 
-/** Returns the memory input of the IncSP. */
-ir_node *be_get_IncSP_mem(ir_node *irn);
-
-/** Sets a new offset to a IncSP node. */
-void     be_set_IncSP_offset(ir_node *irn, unsigned offset);
+/**
+ * Sets a new offset to a IncSP node.
+ * A positive offset means expanding the stack, a negative offset shrinking
+ * an offset is == BE_STACK_FRAME_SIZE will be replaced by the real size of the
+ * stackframe in the fix_stack_offsets phase.
+ */
+void     be_set_IncSP_offset(ir_node *irn, int offset);
 
 /** Gets the offset from a IncSP node. */
-unsigned be_get_IncSP_offset(const ir_node *irn);
-
-/** Sets a new direction to a IncSP node. */
-void           be_set_IncSP_direction(ir_node *irn, be_stack_dir_t dir);
-
-/** Gets the direction from a IncSP node. */
-be_stack_dir_t be_get_IncSP_direction(const ir_node *irn);
+int be_get_IncSP_offset(const ir_node *irn);
 
 /** Gets the call entity or NULL if this is no static call. */
 entity  *be_Call_get_entity(const ir_node *call);
@@ -350,6 +374,9 @@ entity* be_get_frame_entity(const ir_node *irn);
 ir_node* be_get_Reload_mem(const ir_node *irn);
 ir_node* be_get_Reload_frame(const ir_node* irn);
 
+ir_node* be_get_Spill_val(const ir_node *irn);
+ir_node* be_get_Spill_frame(const ir_node* irn);
+
 void be_set_MemPerm_in_entity(const ir_node *irn, int n, entity* ent);
 entity *be_get_MemPerm_in_entity(const ir_node *irn, int n);