Inline Math.max and Math.min in crankshaft.

src/hydrogen-instructions.cc

Index: src/hydrogen-instructions.cc
diff --git a/src/hydrogen-instructions.cc b/src/hydrogen-instructions.cc
index 1ff7f16fdf4195f19184eefe8c72093db641c71d..f74c21cc6604d9d39a87e1e60a233154abb0b77a 100644
--- a/src/hydrogen-instructions.cc
+++ b/src/hydrogen-instructions.cc
@@ -955,6 +955,23 @@ Range* HPhi::InferRange() {
 }
 
 
+Range* HMathMinMax::InferRange() {
+  Range* a = left()->range();
+  Range* b = right()->range();
+  Range* res = NULL;
+  if (op_ == kMathMin) {
+    res = new Range((a->lower() < b->lower()) ? a->lower() : b->lower(),
+                    (a->upper() < b->upper()) ? a->upper() : b->upper());
+    res->set_can_be_minus_zero(a->CanBeMinusZero() || b->CanBeMinusZero());
+  } else {
+    res = new Range((a->lower() > b->lower()) ? a->lower() : b->lower(),
+                    (a->upper() > b->upper()) ? a->upper() : b->upper());
+    res->set_can_be_minus_zero(a->CanBeMinusZero() && b->CanBeMinusZero());
+  }
+  return res;
+}
+
+
 Range* HAdd::InferRange() {
   if (representation().IsInteger32()) {
     Range* a = left()->range();