# HG changeset patch
# User Gilles Duboscq <gilles.m.duboscq@oracle.com>
# Date 1447865347 -3600
# Node ID 27ee22a166d4b466adfd2a1627e3c08b55fcfa80
# Parent  dc609421fcdb65fd971286193912dfdd01450a32
Add foldStamp for AMD64MathIntrinsicNode for cos and sin

diff -r dc609421fcdb -r 27ee22a166d4 graal/com.oracle.graal.replacements.amd64/src/com/oracle/graal/replacements/amd64/AMD64MathIntrinsicNode.java
--- a/graal/com.oracle.graal.replacements.amd64/src/com/oracle/graal/replacements/amd64/AMD64MathIntrinsicNode.java	Wed Nov 18 17:45:18 2015 +0100
+++ b/graal/com.oracle.graal.replacements.amd64/src/com/oracle/graal/replacements/amd64/AMD64MathIntrinsicNode.java	Wed Nov 18 17:49:07 2015 +0100
@@ -28,6 +28,7 @@
 
 import com.oracle.graal.compiler.common.type.FloatStamp;
 import com.oracle.graal.compiler.common.type.PrimitiveStamp;
+import com.oracle.graal.compiler.common.type.Stamp;
 import com.oracle.graal.compiler.common.type.StampFactory;
 import com.oracle.graal.graph.NodeClass;
 import com.oracle.graal.graph.spi.CanonicalizerTool;
@@ -81,6 +82,20 @@
     }
 
     @Override
+    public Stamp foldStamp(Stamp newStamp) {
+        if (newStamp instanceof FloatStamp) {
+            FloatStamp floatStamp = (FloatStamp) newStamp;
+            switch (operation()) {
+                case COS:
+                case SIN:
+                    boolean nonNaN = floatStamp.lowerBound() != Double.NEGATIVE_INFINITY && floatStamp.upperBound() != Double.POSITIVE_INFINITY;
+                    return StampFactory.forFloat(JavaKind.Double, -1.0, 1.0, nonNaN);
+            }
+        }
+        return super.foldStamp(newStamp);
+    }
+
+    @Override
     public void generate(NodeLIRBuilderTool nodeValueMap, ArithmeticLIRGeneratorTool lirGen) {
         AMD64ArithmeticLIRGeneratorTool gen = (AMD64ArithmeticLIRGeneratorTool) lirGen;
         Value input = nodeValueMap.operand(getValue());