# HG changeset patch
# User Josef Eisl <josef.eisl@jku.at>
# Date 1427705863 -7200
# Node ID bd3246bc0aaacf056db6bef33fcda6b585e57c63
# Parent  32e2857bb2bb17bada1b08d6202d29a5fe7955fe
AMD64HotSpotLIRGenerator.RescueSlotDummyOp: add javadoc.

diff -r 32e2857bb2bb -r bd3246bc0aaa graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotLIRGenerator.java
--- a/graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotLIRGenerator.java	Mon Mar 30 10:47:08 2015 +0200
+++ b/graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotLIRGenerator.java	Mon Mar 30 10:57:43 2015 +0200
@@ -122,6 +122,11 @@
 
     SaveRbp saveRbp;
 
+    /**
+     * Helper instruction to reserve a stack slot for the whole method. Note that the actual users
+     * of the stack slot might be inserted after stack slot allocation. This dummy instruction
+     * ensures that the stack slot is alive and gets a real stack slot assigned.
+     */
     private static final class RescueSlotDummyOp extends LIRInstruction {
         public static final LIRInstructionClass<RescueSlotDummyOp> TYPE = LIRInstructionClass.create(RescueSlotDummyOp.class);