# HG changeset patch
# User Roland Schatz <roland.schatz@oracle.com>
# Date 1423141919 -3600
# Node ID 28b07d300f573aca9b6caf5e630baff18bc1451a
# Parent  5fce692f65c8273dd43f3eec17dc54d09725dbf4
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diff -r 5fce692f65c8 -r 28b07d300f57 graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/GraalDirectivesSubstitutions.java
--- a/graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/GraalDirectivesSubstitutions.java	Thu Feb 05 11:10:38 2015 +0100
+++ b/graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/GraalDirectivesSubstitutions.java	Thu Feb 05 14:11:59 2015 +0100
@@ -48,6 +48,11 @@
         return true;
     }
 
+    /*
+     * This needs to be a @MacroSubstitution, not a @MethodSubstitution, because we want to get a
+     * unique ControlFlowAnchorNode for each occurrence of this call. With @MethodSubstitution, we
+     * would get a clone of a single cached node.
+     */
     @MacroSubstitution(forced = true, macro = ControlFlowAnchorNode.class)
     public static native void controlFlowAnchor();