enum vtn_branch_type {
vtn_branch_type_none,
+ vtn_branch_type_if_merge,
vtn_branch_type_switch_break,
vtn_branch_type_switch_fallthrough,
vtn_branch_type_loop_break,
vtn_branch_type_loop_continue,
+ vtn_branch_type_loop_back_edge,
vtn_branch_type_discard,
vtn_branch_type_return,
};
vtn_cf_node_type_loop,
vtn_cf_node_type_case,
vtn_cf_node_type_switch,
+ vtn_cf_node_type_function,
};
struct vtn_cf_node {
struct list_head link;
+ struct vtn_cf_node *parent;
enum vtn_cf_node_type type;
};
*/
struct list_head cont_body;
+ struct vtn_block *header_block;
+ struct vtn_block *cont_block;
+ struct vtn_block *break_block;
+
SpvLoopControlMask control;
};
enum vtn_branch_type else_type;
struct list_head else_body;
+ struct vtn_block *merge_block;
+
SpvSelectionControlMask control;
};
struct vtn_case {
struct vtn_cf_node node;
+ enum vtn_branch_type type;
struct list_head body;
- /* The block that starts this case */
- struct vtn_block *start_block;
-
/* The fallthrough case, if any */
struct vtn_case *fallthrough;
uint32_t selector;
struct list_head cases;
+
+ struct vtn_block *break_block;
};
struct vtn_block {
enum vtn_branch_type branch_type;
+ /* The CF node for which this is a merge target
+ *
+ * The SPIR-V spec requires that any given block can be the merge target
+ * for at most one merge instruction. If this block is a merge target,
+ * this points back to the block containing that merge instruction.
+ */
+ struct vtn_cf_node *merge_cf_node;
+
/** Points to the loop that this block starts (if it starts a loop) */
struct vtn_loop *loop;
};
struct vtn_function {
- struct exec_node node;
+ struct vtn_cf_node node;
struct vtn_type *type;
VTN_DECL_CF_NODE_CAST(if)
VTN_DECL_CF_NODE_CAST(case)
VTN_DECL_CF_NODE_CAST(switch)
+VTN_DECL_CF_NODE_CAST(function)
#define vtn_foreach_cf_node(node, cf_list) \
list_for_each_entry(struct vtn_cf_node, node, cf_list, link)
bool variable_pointers;
struct vtn_function *func;
- struct exec_list functions;
+ struct list_head functions;
/* Current function parameter index */
unsigned func_param_idx;