glsl: Add a helper for generating temporary variables in ir_builder.

Reviewed-by: Kenneth Graunke <[email protected]>

2 files changed, 12 insertions, 0 deletions

diff --git a/src/glsl/ir_builder.cpp b/src/glsl/ir_builder.cpp
index 0c8a15bc86e..9a16c90e5cd 100644
--- a/src/glsl/ir_builder.cpp
+++ b/src/glsl/ir_builder.cpp
@@ -34,6 +34,17 @@ ir_factory::emit(ir_instruction *ir)
    instructions->push_tail(ir);
 }
 
+ir_variable *
+ir_factory::make_temp(const glsl_type *type, const char *name)
+{
+   ir_variable *var;
+
+   var = new(mem_ctx) ir_variable(type, name, ir_var_temporary);
+   emit(var);
+
+   return var;
+}
+
 ir_assignment *
 assign(deref lhs, operand rhs, int writemask)
 {
diff --git a/src/glsl/ir_builder.h b/src/glsl/ir_builder.h
index af9d1600f68..0ebcbab95c2 100644
--- a/src/glsl/ir_builder.h
+++ b/src/glsl/ir_builder.h
@@ -74,6 +74,7 @@ public:
 class ir_factory {
 public:
    void emit(ir_instruction *ir);
+   ir_variable *make_temp(const glsl_type *type, const char *name);
 
    exec_list *instructions;
    void *mem_ctx;