[Mesa-dev] [PATCH 4/9] i965: Implement new ir_unop_u2i and ir_unop_i2u opcodes.

[Kenneth Graunke]

No MOV is necessary since signed/unsigned integers share the same
bit-representation; it's simply a question of interpretation.  In
particular, the fs_reg::imm union shouldn't need updating.

Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
---
 .../dri/i965/brw_fs_channel_expressions.cpp        |    2 ++
 src/mesa/drivers/dri/i965/brw_fs_visitor.cpp       |    6 ++++++
 2 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_fs_channel_expressions.cpp b/src/mesa/drivers/dri/i965/brw_fs_channel_expressions.cpp
index 7f3f528..46677a6 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_channel_expressions.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_channel_expressions.cpp
@@ -191,6 +191,8 @@ ir_channel_expressions_visitor::visit_leave(ir_assignment *ir)
    case ir_unop_log:
    case ir_unop_exp2:
    case ir_unop_log2:
+   case ir_unop_i2u:
+   case ir_unop_u2i:
    case ir_unop_f2i:
    case ir_unop_i2f:
    case ir_unop_f2b:
diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
index b485787..3c415b2 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
@@ -349,6 +349,12 @@ fs_visitor::visit(ir_expression *ir)
       emit_math(FS_OPCODE_RSQ, this->result, op[0]);
       break;
 
+   case ir_unop_i2u:
+      this->result.type = BRW_REGISTER_TYPE_UD;
+      break;
+   case ir_unop_u2i:
+      this->result.type = BRW_REGISTER_TYPE_D;
+      break;
    case ir_unop_i2f:
    case ir_unop_b2f:
    case ir_unop_b2i:
-- 
1.7.5.4