# HG changeset patch
# User Josef Eisl <josef.eisl@jku.at>
# Date 1423065191 -3600
# Node ID 6fce03279f0afd66ef54defdd936785e9e8a7cc9
# Parent  afb8260809497b398fe8b75f2c22aa03779b0b61
LIRGenerator: assert that we are not creating copies of variables (unintentionally).

Creating copies of variables is almost always a bug.

diff -r afb826080949 -r 6fce03279f0a graal/com.oracle.graal.lir/src/com/oracle/graal/lir/gen/LIRGenerator.java
--- a/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/gen/LIRGenerator.java	Wed Feb 04 14:44:37 2015 +0100
+++ b/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/gen/LIRGenerator.java	Wed Feb 04 16:53:11 2015 +0100
@@ -119,6 +119,7 @@
 
     @Override
     public Variable emitMove(Value input) {
+        assert !(input instanceof Variable) : "Creating a copy of a variable via this method is not supported (and potentially a bug): " + input;
         Variable result = newVariable(input.getLIRKind());
         emitMove(result, input);
         return result;