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changeset 15960:da6941811da8

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fast path for IntegerStamp.meet
author Lukas Stadler <lukas.stadler@oracle.com>
date Wed, 28 May 2014 17:47:23 +0200
parents 451a7e38ebce
children d5b824a41530
files graal/com.oracle.graal.compiler.common/src/com/oracle/graal/compiler/common/type/IntegerStamp.java
diffstat 1 files changed, 3 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/graal/com.oracle.graal.compiler.common/src/com/oracle/graal/compiler/common/type/IntegerStamp.java	Wed May 28 17:47:23 2014 +0200
+++ b/graal/com.oracle.graal.compiler.common/src/com/oracle/graal/compiler/common/type/IntegerStamp.java	Wed May 28 17:47:23 2014 +0200
@@ -208,6 +208,9 @@
         if (!(otherStamp instanceof IntegerStamp)) {
             return StampFactory.illegal(Kind.Illegal);
         }
+        if (equals(otherStamp)) {
+            return this;
+        }
         IntegerStamp other = (IntegerStamp) otherStamp;
         return createStamp(other, Math.max(upperBound, other.upperBound), Math.min(lowerBound, other.lowerBound), downMask & other.downMask, upMask | other.upMask);
     }