Mesa (master): glsl: Add is_rvalue, is_dereference, and is_jump methods

[Ian Romanick]

Module: Mesa
Branch: master
Commit: a284c6300665d4388dae14363807a57bb82e4cb5
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=a284c6300665d4388dae14363807a57bb82e4cb5

Author: Ian Romanick <ian.d.romanick at intel.com>
Date:   Tue Mar 24 08:55:15 2015 -0700

glsl: Add is_rvalue, is_dereference, and is_jump methods

These functions deteremine when an IR node is one of the non-leaf
classes.

v2: Adjust indentation to line up.  Suggested by Matt.

Signed-off-by: Ian Romanick <ian.d.romanick at intel.com>
Reviewed-by: Francisco Jerez <currojerez at riseup.net>

---

 src/glsl/ir.h |   25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/src/glsl/ir.h b/src/glsl/ir.h
index fdc22ed..b3a98b8 100644
--- a/src/glsl/ir.h
+++ b/src/glsl/ir.h
@@ -109,6 +109,31 @@ public:
    virtual ir_instruction *clone(void *mem_ctx,
 				 struct hash_table *ht) const = 0;
 
+   bool is_rvalue() const
+   {
+      return ir_type == ir_type_dereference_array ||
+             ir_type == ir_type_dereference_record ||
+             ir_type == ir_type_dereference_variable ||
+             ir_type == ir_type_constant ||
+             ir_type == ir_type_expression ||
+             ir_type == ir_type_swizzle ||
+             ir_type == ir_type_texture;
+   }
+
+   bool is_dereference() const
+   {
+      return ir_type == ir_type_dereference_array ||
+             ir_type == ir_type_dereference_record ||
+             ir_type == ir_type_dereference_variable;
+   }
+
+   bool is_jump() const
+   {
+      return ir_type == ir_type_loop_jump ||
+             ir_type == ir_type_return ||
+             ir_type == ir_type_discard;
+   }
+
    /**
     * \name IR instruction downcast functions
     *