i965: Move the back-end compiler to src/intel/compiler

Mostly a dummy git mv with a couple of noticable parts:
 - With the earlier header cleanups, nothing in src/intel depends
files from src/mesa/drivers/dri/i965/
 - Both Autoconf and Android builds are addressed. Thanks to Mauro and
Tapani for the fixups in the latter
 - brw_util.[ch] is not really compiler specific, so it's moved to i965.

v2:
 - move brw_eu_defines.h instead of brw_defines.h
 - remove no-longer applicable includes
 - add missing vulkan/ prefix in the Android build (thanks Tapani)

v3:
 - don't list brw_defines.h in src/intel/Makefile.sources (Jason)
 - rebase on top of the oa patches

[Emil Velikov: commit message, various small fixes througout]
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

1 files changed, 358 insertions, 0 deletions

diff --git a/src/intel/compiler/brw_cfg.h b/src/intel/compiler/brw_cfg.h
new file mode 100644
index 00000000000..b8af40f725f
--- /dev/null
+++ b/src/intel/compiler/brw_cfg.h
@@ -0,0 +1,358 @@
+/*
+ * Copyright © 2012 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Eric Anholt <eric@anholt.net>
+ *
+ */
+
+#pragma once
+#ifndef BRW_CFG_H
+#define BRW_CFG_H
+
+#include "brw_shader.h"
+
+struct bblock_t;
+
+struct bblock_link {
+#ifdef __cplusplus
+   DECLARE_RALLOC_CXX_OPERATORS(bblock_link)
+
+   bblock_link(bblock_t *block)
+      : block(block)
+   {
+   }
+#endif
+
+   struct exec_node link;
+   struct bblock_t *block;
+};
+
+struct backend_instruction;
+
+struct bblock_t {
+#ifdef __cplusplus
+   DECLARE_RALLOC_CXX_OPERATORS(bblock_t)
+
+   explicit bblock_t(cfg_t *cfg);
+
+   void add_successor(void *mem_ctx, bblock_t *successor);
+   bool is_predecessor_of(const bblock_t *block) const;
+   bool is_successor_of(const bblock_t *block) const;
+   bool can_combine_with(const bblock_t *that) const;
+   void combine_with(bblock_t *that);
+   void dump(backend_shader *s) const;
+
+   backend_instruction *start();
+   const backend_instruction *start() const;
+   backend_instruction *end();
+   const backend_instruction *end() const;
+
+   bblock_t *next();
+   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;
+   struct cfg_t *cfg;
+   struct bblock_t *idom;
+
+   int start_ip;
+   int end_ip;
+
+   struct exec_list instructions;
+   struct exec_list parents;
+   struct exec_list children;
+   int num;
+
+   unsigned cycle_count;
+};
+
+static inline struct backend_instruction *
+bblock_start(struct bblock_t *block)
+{
+   return (struct backend_instruction *)exec_list_get_head(&block->instructions);
+}
+
+static inline const struct backend_instruction *
+bblock_start_const(const struct bblock_t *block)
+{
+   return (const struct backend_instruction *)exec_list_get_head_const(&block->instructions);
+}
+
+static inline struct backend_instruction *
+bblock_end(struct bblock_t *block)
+{
+   return (struct backend_instruction *)exec_list_get_tail(&block->instructions);
+}
+
+static inline const struct backend_instruction *
+bblock_end_const(const struct bblock_t *block)
+{
+   return (const struct backend_instruction *)exec_list_get_tail_const(&block->instructions);
+}
+
+static inline struct bblock_t *
+bblock_next(struct bblock_t *block)
+{
+   if (exec_node_is_tail_sentinel(block->link.next))
+      return NULL;
+
+   return (struct bblock_t *)block->link.next;
+}
+
+static inline const struct bblock_t *
+bblock_next_const(const struct bblock_t *block)
+{
+   if (exec_node_is_tail_sentinel(block->link.next))
+      return NULL;
+
+   return (const struct bblock_t *)block->link.next;
+}
+
+static inline struct bblock_t *
+bblock_prev(struct bblock_t *block)
+{
+   if (exec_node_is_head_sentinel(block->link.prev))
+      return NULL;
+
+   return (struct bblock_t *)block->link.prev;
+}
+
+static inline const struct bblock_t *
+bblock_prev_const(const struct bblock_t *block)
+{
+   if (exec_node_is_head_sentinel(block->link.prev))
+      return NULL;
+
+   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()
+{
+   return bblock_start(this);
+}
+
+inline const backend_instruction *
+bblock_t::start() const
+{
+   return bblock_start_const(this);
+}
+
+inline backend_instruction *
+bblock_t::end()
+{
+   return bblock_end(this);
+}
+
+inline const backend_instruction *
+bblock_t::end() const
+{
+   return bblock_end_const(this);
+}
+
+inline bblock_t *
+bblock_t::next()
+{
+   return bblock_next(this);
+}
+
+inline const bblock_t *
+bblock_t::next() const
+{
+   return bblock_next_const(this);
+}
+
+inline bblock_t *
+bblock_t::prev()
+{
+   return bblock_prev(this);
+}
+
+inline const bblock_t *
+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 {
+#ifdef __cplusplus
+   DECLARE_RALLOC_CXX_OPERATORS(cfg_t)
+
+   cfg_t(exec_list *instructions);
+   ~cfg_t();
+
+   void remove_block(bblock_t *block);
+
+   bblock_t *new_block();
+   void set_next_block(bblock_t **cur, bblock_t *block, int ip);
+   void make_block_array();
+   void calculate_idom();
+   static bblock_t *intersect(bblock_t *b1, bblock_t *b2);
+
+   void dump(backend_shader *s);
+   void dump_cfg();
+   void dump_domtree();
+#endif
+   void *mem_ctx;
+
+   /** Ordered list (by ip) of basic blocks */
+   struct exec_list block_list;
+   struct bblock_t **blocks;
+   int num_blocks;
+
+   bool idom_dirty;
+
+   unsigned cycle_count;
+};
+
+/* Note that this is implemented with a double for loop -- break will
+ * break from the inner loop only!
+ */
+#define foreach_block_and_inst(__block, __type, __inst, __cfg) \
+   foreach_block (__block, __cfg)                              \
+      foreach_inst_in_block (__type, __inst, __block)
+
+/* Note that this is implemented with a double for loop -- break will
+ * break from the inner loop only!
+ */
+#define foreach_block_and_inst_safe(__block, __type, __inst, __cfg) \
+   foreach_block_safe (__block, __cfg)                              \
+      foreach_inst_in_block_safe (__type, __inst, __block)
+
+#define foreach_block(__block, __cfg)                          \
+   foreach_list_typed (bblock_t, __block, link, &(__cfg)->block_list)
+
+#define foreach_block_reverse(__block, __cfg)                  \
+   foreach_list_typed_reverse (bblock_t, __block, link, &(__cfg)->block_list)
+
+#define foreach_block_safe(__block, __cfg)                     \
+   foreach_list_typed_safe (bblock_t, __block, link, &(__cfg)->block_list)
+
+#define foreach_block_reverse_safe(__block, __cfg)             \
+   foreach_list_typed_reverse_safe (bblock_t, __block, link, &(__cfg)->block_list)
+
+#define foreach_inst_in_block(__type, __inst, __block)         \
+   foreach_in_list(__type, __inst, &(__block)->instructions)
+
+#define foreach_inst_in_block_safe(__type, __inst, __block)    \
+   for (__type *__inst = (__type *)__block->instructions.head_sentinel.next, \
+               *__next = (__type *)__inst->next;               \
+        __next != NULL;                                        \
+        __inst = __next,                                       \
+        __next = (__type *)__next->next)
+
+#define foreach_inst_in_block_reverse(__type, __inst, __block) \
+   foreach_in_list_reverse(__type, __inst, &(__block)->instructions)
+
+#define foreach_inst_in_block_reverse_safe(__type, __inst, __block) \
+   foreach_in_list_reverse_safe(__type, __inst, &(__block)->instructions)
+
+#define foreach_inst_in_block_starting_from(__type, __scan_inst, __inst) \
+   for (__type *__scan_inst = (__type *)__inst->next;          \
+        !__scan_inst->is_tail_sentinel();                      \
+        __scan_inst = (__type *)__scan_inst->next)
+
+#define foreach_inst_in_block_reverse_starting_from(__type, __scan_inst, __inst) \
+   for (__type *__scan_inst = (__type *)__inst->prev;          \
+        !__scan_inst->is_head_sentinel();                      \
+        __scan_inst = (__type *)__scan_inst->prev)
+
+#endif /* BRW_CFG_H */