glsl: Add an origin pointer in the function signature object.

This points to the object with the function body, allowing us to map
from a built-in prototype to the actual body with IR code to execute.

Signed-off-by: Olivier Galibert <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/glsl/ir.cpp b/src/glsl/ir.cpp
index 839d5b3fdb4..970d8f3bac0 100644
--- a/src/glsl/ir.cpp
+++ b/src/glsl/ir.cpp
@@ -1481,6 +1481,7 @@ ir_function_signature::ir_function_signature(const glsl_type *return_type)
 {
    this->ir_type = ir_type_function_signature;
    this->is_builtin = false;
+   this->origin = NULL;
 }