glsl: Add bit_xor builder

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

src/compiler/glsl/ir_builder.cpp

@@ -416,6 +416,12 @@ bit_or(operand a, operand b)
    return expr(ir_binop_bit_or, a, b);
 }
 
+ir_expression*
+bit_xor(operand a, operand b)
+{
+   return expr(ir_binop_bit_xor, a, b);
+}
+
 ir_expression*
 lshift(operand a, operand b)
 {

src/compiler/glsl/ir_builder.h

@@ -168,6 +168,7 @@ ir_expression *logic_or(operand a, operand b);
 ir_expression *bit_not(operand a);
 ir_expression *bit_or(operand a, operand b);
 ir_expression *bit_and(operand a, operand b);
+ir_expression *bit_xor(operand a, operand b);
 ir_expression *lshift(operand a, operand b);
 ir_expression *rshift(operand a, operand b);