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changeset 7347:8db89ad23965

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Put 1 as lower bound for loop frequency.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Sat, 12 Jan 2013 17:25:41 +0100
parents 5ce0743ba6d8
children 9f69799a1768
files graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/ComputeProbabilityPhase.java
diffstat 1 files changed, 3 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/ComputeProbabilityPhase.java	Sat Jan 12 14:50:48 2013 +0100
+++ b/graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/ComputeProbabilityPhase.java	Sat Jan 12 17:25:41 2013 +0100
@@ -70,6 +70,9 @@
     private void correctLoopFrequencies(Loop loop, double parentFrequency, BitSet visitedBlocks) {
         LoopBeginNode loopBegin = ((LoopBeginNode) loop.header.getBeginNode());
         double frequency = parentFrequency * loopBegin.loopFrequency();
+        if (frequency < 1) {
+            frequency = 1;
+        }
         for (Loop child : loop.children) {
             correctLoopFrequencies(child, frequency, visitedBlocks);
         }