Mercurial > hg > graal-jvmci-8
changeset 15185:7872f9f44c03
additional canonicalization for IntegerTestNode
author | Lukas Stadler <lukas.stadler@oracle.com> |
---|---|
date | Thu, 17 Apr 2014 09:59:27 +0200 |
parents | 94874b2fc509 |
children | 5e2cffe8b815 |
files | graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/calc/IntegerTestNode.java |
diffstat | 1 files changed, 2 insertions(+), 0 deletions(-) [+] |
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--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/calc/IntegerTestNode.java Thu Apr 17 09:59:27 2014 +0200 +++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/calc/IntegerTestNode.java Thu Apr 17 09:59:27 2014 +0200 @@ -54,6 +54,8 @@ IntegerStamp yStamp = (IntegerStamp) y().stamp(); if ((xStamp.upMask() & yStamp.upMask()) == 0) { return LogicConstantNode.tautology(graph()); + } else if ((xStamp.downMask() & yStamp.downMask()) != 0) { + return LogicConstantNode.contradiction(graph()); } } return this;