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changeset 13937:814800074308

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Allow disabling of redundant move elimination
author Christian Wimmer <christian.wimmer@oracle.com>
date Wed, 12 Feb 2014 10:23:21 -0800
parents e79579c921ff
children aa8fb1cb16d1
files graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/GraalCompiler.java graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/gen/LIRGenerator.java
diffstat 2 files changed, 11 insertions(+), 1 deletions(-) [+]
line wrap: on
line diff
--- a/graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/GraalCompiler.java	Wed Feb 12 10:22:48 2014 -0800
+++ b/graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/GraalCompiler.java	Wed Feb 12 10:23:21 2014 -0800
@@ -280,7 +280,9 @@
         try (Scope s = Debug.scope("ControlFlowOptimizations")) {
             EdgeMoveOptimizer.optimize(lir);
             ControlFlowOptimizer.optimize(lir);
-            RedundantMoveElimination.optimize(lir, frameMap, lirGen.getGraph().method());
+            if (lirGen.canEliminateRedundantMoves()) {
+                RedundantMoveElimination.optimize(lir, frameMap, lirGen.getGraph().method());
+            }
             NullCheckOptimizer.optimize(lir, target.implicitNullCheckLimit);
 
             Debug.dump(lir, "After control flow optimization");
--- a/graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/gen/LIRGenerator.java	Wed Feb 12 10:22:48 2014 -0800
+++ b/graal/com.oracle.graal.compiler/src/com/oracle/graal/compiler/gen/LIRGenerator.java	Wed Feb 12 10:23:21 2014 -0800
@@ -219,6 +219,14 @@
         return null;
     }
 
+    /**
+     * Returns true if the redundant move elimination optimization should be done after register
+     * allocation.
+     */
+    public boolean canEliminateRedundantMoves() {
+        return true;
+    }
+
     @SuppressWarnings("hiding")
     protected DebugInfoBuilder createDebugInfoBuilder(NodeMap<Value> nodeOperands) {
         return new DebugInfoBuilder(nodeOperands);