Mesa (master): i965/cfg: Add functions to get first and last non-CF instructions.
Matt Turner
mattst88 at kemper.freedesktop.org
Fri Nov 7 00:35:31 UTC 2014
Module: Mesa
Branch: master
Commit: f0cfc4fca011b594393b0e39793cb8d8acdcde0e
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=f0cfc4fca011b594393b0e39793cb8d8acdcde0e
Author: Matt Turner <mattst88 at gmail.com>
Date: Mon Oct 27 14:36:48 2014 -0700
i965/cfg: Add functions to get first and last non-CF instructions.
Reviewed-by: Jason Ekstrand <jason.ekstrand at intel.com>
---
src/mesa/drivers/dri/i965/brw_cfg.h | 74 +++++++++++++++++++++++++++++++++++
1 file changed, 74 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/brw_cfg.h b/src/mesa/drivers/dri/i965/brw_cfg.h
index c06ed61..388d29e 100644
--- a/src/mesa/drivers/dri/i965/brw_cfg.h
+++ b/src/mesa/drivers/dri/i965/brw_cfg.h
@@ -71,6 +71,12 @@ struct bblock_t {
const bblock_t *next() const;
bblock_t *prev();
const bblock_t *prev() const;
+
+ bool starts_with_control_flow() const;
+ bool ends_with_control_flow() const;
+
+ backend_instruction *first_non_control_flow_inst();
+ backend_instruction *last_non_control_flow_inst();
#endif
struct exec_node link;
@@ -141,6 +147,50 @@ bblock_prev_const(const struct bblock_t *block)
return (const struct bblock_t *)block->link.prev;
}
+static inline bool
+bblock_starts_with_control_flow(const struct bblock_t *block)
+{
+ enum opcode op = bblock_start_const(block)->opcode;
+ return op == BRW_OPCODE_DO || op == BRW_OPCODE_ENDIF;
+}
+
+static inline bool
+bblock_ends_with_control_flow(const struct bblock_t *block)
+{
+ enum opcode op = bblock_end_const(block)->opcode;
+ return op == BRW_OPCODE_IF ||
+ op == BRW_OPCODE_ELSE ||
+ op == BRW_OPCODE_WHILE ||
+ op == BRW_OPCODE_BREAK ||
+ op == BRW_OPCODE_CONTINUE;
+}
+
+static inline struct backend_instruction *
+bblock_first_non_control_flow_inst(struct bblock_t *block)
+{
+ struct backend_instruction *inst = bblock_start(block);
+ if (bblock_starts_with_control_flow(block))
+#ifdef __cplusplus
+ inst = (struct backend_instruction *)inst->next;
+#else
+ inst = (struct backend_instruction *)inst->link.next;
+#endif
+ return inst;
+}
+
+static inline struct backend_instruction *
+bblock_last_non_control_flow_inst(struct bblock_t *block)
+{
+ struct backend_instruction *inst = bblock_end(block);
+ if (bblock_ends_with_control_flow(block))
+#ifdef __cplusplus
+ inst = (struct backend_instruction *)inst->prev;
+#else
+ inst = (struct backend_instruction *)inst->link.prev;
+#endif
+ return inst;
+}
+
#ifdef __cplusplus
inline backend_instruction *
bblock_t::start()
@@ -189,6 +239,30 @@ bblock_t::prev() const
{
return bblock_prev_const(this);
}
+
+inline bool
+bblock_t::starts_with_control_flow() const
+{
+ return bblock_starts_with_control_flow(this);
+}
+
+inline bool
+bblock_t::ends_with_control_flow() const
+{
+ return bblock_ends_with_control_flow(this);
+}
+
+inline backend_instruction *
+bblock_t::first_non_control_flow_inst()
+{
+ return bblock_first_non_control_flow_inst(this);
+}
+
+inline backend_instruction *
+bblock_t::last_non_control_flow_inst()
+{
+ return bblock_last_non_control_flow_inst(this);
+}
#endif
struct cfg_t {
More information about the mesa-commit
mailing list