On 08/12/2013 01:18 PM, Matt Turner wrote:
Necessary to avoid combining a bitcast and a modifier into a single
operation. Otherwise if safe, the MOV should be removed by
copy-propagation or register coalescing.
Has that been verified with shaderdb?
---
src/mesa/drivers/dri/i965/brw_fs_visitor.cpp | 4 ++--
src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
index ee7728c..fa4554b 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
@@ -361,12 +361,12 @@ fs_visitor::visit(ir_expression *ir)
break;
case ir_unop_neg:
op[0].negate = !op[0].negate;
- this->result = op[0];
+ emit(MOV(this->result, op[0]));
break;
case ir_unop_abs:
op[0].abs = true;
op[0].negate = false;
- this->result = op[0];
+ emit(MOV(this->result, op[0]));
break;
case ir_unop_sign:
temp = fs_reg(this, ir->type);
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
index 8d4a5d4..05c0091 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
@@ -1391,12 +1391,12 @@ vec4_visitor::visit(ir_expression *ir)
break;
case ir_unop_neg:
op[0].negate = !op[0].negate;
- this->result = op[0];
+ emit(MOV(result_dst, op[0]));
break;
case ir_unop_abs:
op[0].abs = true;
op[0].negate = false;
- this->result = op[0];
+ emit(MOV(result_dst, op[0]));
break;
case ir_unop_sign:
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