Mesa (master): i965: Add basic-block aware backend_instruction:: insert_* methods.

[Matt Turner]

Module: Mesa
Branch: master
Commit: 3d6d4dc6f7f90d65982073294a41afac8397f68a
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=3d6d4dc6f7f90d65982073294a41afac8397f68a

Author: Matt Turner <mattst88 at gmail.com>
Date:   Sat Jul 12 21:18:08 2014 -0700

i965: Add basic-block aware backend_instruction::insert_* methods.

Reviewed-by: Topi Pohjolainen <topi.pohjolainen at intel.com>

---

 src/mesa/drivers/dri/i965/brw_shader.cpp |   47 ++++++++++++++++++++++++++++++
 src/mesa/drivers/dri/i965/brw_shader.h   |    5 ++++
 2 files changed, 52 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/brw_shader.cpp b/src/mesa/drivers/dri/i965/brw_shader.cpp
index 464790a..1a18169 100644
--- a/src/mesa/drivers/dri/i965/brw_shader.cpp
+++ b/src/mesa/drivers/dri/i965/brw_shader.cpp
@@ -758,6 +758,53 @@ adjust_later_block_ips(bblock_t *start_block, int ip_adjustment)
 }
 
 void
+backend_instruction::insert_after(bblock_t *block, backend_instruction *inst)
+{
+   assert(inst_is_in_block(block, this) || !"Instruction not in block");
+
+   block->end_ip++;
+
+   adjust_later_block_ips(block, 1);
+
+   if (block->end == this)
+      block->end = inst;
+
+   exec_node::insert_after(inst);
+}
+
+void
+backend_instruction::insert_before(bblock_t *block, backend_instruction *inst)
+{
+   assert(inst_is_in_block(block, this) || !"Instruction not in block");
+
+   block->end_ip++;
+
+   adjust_later_block_ips(block, 1);
+
+   if (block->start == this)
+      block->start = inst;
+
+   exec_node::insert_before(inst);
+}
+
+void
+backend_instruction::insert_before(bblock_t *block, exec_list *list)
+{
+   assert(inst_is_in_block(block, this) || !"Instruction not in block");
+
+   unsigned num_inst = list->length();
+
+   block->end_ip += num_inst;
+
+   adjust_later_block_ips(block, num_inst);
+
+   if (block->start == this)
+      block->start = (backend_instruction *)list->get_head();
+
+   exec_node::insert_before(list);
+}
+
+void
 backend_instruction::remove(bblock_t *block)
 {
    assert(inst_is_in_block(block, this) || !"Instruction not in block");
diff --git a/src/mesa/drivers/dri/i965/brw_shader.h b/src/mesa/drivers/dri/i965/brw_shader.h
index f5af4fd..35a2b96 100644
--- a/src/mesa/drivers/dri/i965/brw_shader.h
+++ b/src/mesa/drivers/dri/i965/brw_shader.h
@@ -92,6 +92,11 @@ struct backend_instruction : public exec_node {
 
    using exec_node::remove;
    void remove(bblock_t *block);
+   using exec_node::insert_after;
+   void insert_after(bblock_t *block, backend_instruction *inst);
+   using exec_node::insert_before;
+   void insert_before(bblock_t *block, backend_instruction *inst);
+   void insert_before(bblock_t *block, exec_list *list);
 
    /**
     * True if the instruction has side effects other than writing to