[wasm] Use the Float64Max/Min machine operators to implement F64Max/Min.

src/compiler/x64/code-generator-x64.cc

Index: src/compiler/x64/code-generator-x64.cc
diff --git a/src/compiler/x64/code-generator-x64.cc b/src/compiler/x64/code-generator-x64.cc
index 0ab84e412be54008c1cf154eee2c9c0a14eb480c..301f690a7acb3abbc1a62379ddf029665c201c5d 100644
--- a/src/compiler/x64/code-generator-x64.cc
+++ b/src/compiler/x64/code-generator-x64.cc
@@ -170,7 +170,10 @@ class OutOfLineLoadNaN final : public OutOfLineCode {
   OutOfLineLoadNaN(CodeGenerator* gen, XMMRegister result)
       : OutOfLineCode(gen), result_(result) {}
 
-  void Generate() final { __ Pcmpeqd(result_, result_); }
+  void Generate() final {
+    __ xorpd(result_, result_);

[Benedikt Meurer, 2016/08/03 03:24:34]

Please use Xorpd and Divsd here.

[ahaas, 2016/08/03 07:17:14]

Done.

+    __ divsd(result_, result_);
+  }
 
  private:
   XMMRegister const result_;