# HG changeset patch
# User Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
# Date 1424377716 -3600
# Node ID 2d045c20b1fd089618ce2aac47dc32ee74e4fc4d
# Parent  3446ae32a2d80fecd5783209f3fc02f77e428f18
Simplify ControlFlowGraph#connectBlocks.

diff -r 3446ae32a2d8 -r 2d045c20b1fd graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/cfg/ControlFlowGraph.java
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/cfg/ControlFlowGraph.java	Thu Feb 19 21:26:31 2015 +0100
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/cfg/ControlFlowGraph.java	Thu Feb 19 21:28:36 2015 +0100
@@ -202,12 +202,16 @@
     // Connect blocks (including loop backward edges), but ignoring dead code (blocks with id < 0).
     private void connectBlocks() {
         for (Block block : reversePostOrder) {
-            List<Block> predecessors = new ArrayList<>(4);
+            List<Block> predecessors = new ArrayList<>(1);
             double probability = block.getBeginNode() instanceof StartNode ? 1D : 0D;
             for (Node predNode : block.getBeginNode().cfgPredecessors()) {
                 Block predBlock = nodeToBlock.get(predNode);
                 if (predBlock.getId() >= 0) {
                     predecessors.add(predBlock);
+                    if (predBlock.getSuccessors() == null) {
+                        predBlock.setSuccessors(new ArrayList<>(1));
+                    }
+                    predBlock.getSuccessors().add(block);
                     probability += predBlock.probability;
                 }
             }
@@ -217,11 +221,15 @@
             if (block.getBeginNode() instanceof LoopBeginNode) {
                 LoopBeginNode loopBegin = (LoopBeginNode) block.getBeginNode();
                 probability *= loopBegin.loopFrequency();
-                for (LoopEndNode predNode : loopBegin.orderedLoopEnds()) {
+                for (LoopEndNode predNode : loopBegin.loopEnds()) {
                     Block predBlock = nodeToBlock.get(predNode);
                     assert predBlock != null : predNode;
                     if (predBlock.getId() >= 0) {
                         predecessors.add(predBlock);
+                        if (predBlock.getSuccessors() == null) {
+                            predBlock.setSuccessors(new ArrayList<>(1));
+                        }
+                        predBlock.getSuccessors().add(block);
                     }
                 }
             }
@@ -230,19 +238,9 @@
             }
             block.setPredecessors(predecessors);
             block.setProbability(probability);
-
-            List<Block> successors = new ArrayList<>(4);
-            for (Node suxNode : block.getEndNode().cfgSuccessors()) {
-                Block suxBlock = nodeToBlock.get(suxNode);
-                assert suxBlock.getId() >= 0;
-                successors.add(suxBlock);
+            if (block.getSuccessors() == null) {
+                block.setSuccessors(new ArrayList<>(1));
             }
-            if (block.getEndNode() instanceof LoopEndNode) {
-                Block suxBlock = nodeToBlock.get(((LoopEndNode) block.getEndNode()).loopBegin());
-                assert suxBlock.getId() >= 0;
-                successors.add(suxBlock);
-            }
-            block.setSuccessors(successors);
         }
     }