# HG changeset patch
# User Roland Schatz <roland.schatz@oracle.com>
# Date 1373882535 -7200
# Node ID 3811d04d933eb7e84663c57e2a8fedd644a1fb06
# Parent  257e2455270eca88273aac3e01538f380e03ada9
Do not re-compress oops that are already compressed.

diff -r 257e2455270e -r 3811d04d933e 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 Jul 15 10:59:14 2013 +0200
+++ b/graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotLIRGenerator.java	Mon Jul 15 12:02:15 2013 +0200
@@ -449,8 +449,13 @@
         Variable input = load(inputVal);
         if (isCompressCandidate(access)) {
             if (runtime().config.useCompressedOops && kind == Kind.Object) {
-                Variable scratch = newVariable(Kind.Long);
-                append(new StoreCompressedPointer(kind, storeAddress, input, scratch, state, runtime().config.narrowOopBase, runtime().config.narrowOopShift, runtime().config.logMinObjAlignment));
+                if (input.getKind() == Kind.Object) {
+                    Variable scratch = newVariable(Kind.Long);
+                    append(new StoreCompressedPointer(kind, storeAddress, input, scratch, state, runtime().config.narrowOopBase, runtime().config.narrowOopShift, runtime().config.logMinObjAlignment));
+                } else {
+                    // the input oop is already compressed
+                    append(new StoreOp(input.getKind(), storeAddress, input, state));
+                }
             } else if (runtime().config.useCompressedKlassPointers && kind == Kind.Long) {
                 Variable scratch = newVariable(Kind.Long);
                 append(new StoreCompressedPointer(kind, storeAddress, input, scratch, state, runtime().config.narrowKlassBase, runtime().config.narrowKlassShift, runtime().config.logKlassAlignment));