Thanks Paul.
I've placed this patch as 2.5/15 in the series.
i965/fs: Assert that ir_expressions are usable by 3-src instructions
MAD will be generated directly from ir_triop_fma, so this assertion
checks that all ir_expressions are usable.
---
diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
index 27887d6..a02d92d 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
@@ -336,6 +336,7 @@ fs_visitor::visit(ir_expression *ir)
ir->operands[operand]->print();
printf("\n");
}
+ assert(this->result.is_valid_3src());
op[operand] = this->result;
/* Matrix expression operands should have been broken down to vector
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