[ia32/x64] Smaller instruction to check NaN

src/ia32/assembler-ia32.cc

Index: src/ia32/assembler-ia32.cc
diff --git a/src/ia32/assembler-ia32.cc b/src/ia32/assembler-ia32.cc
index acc36f4de9d96721870870da448b2aa839d60b4f..183f0c0b028445f39c0fcf6b3dee9fd7811d2e08 100644
--- a/src/ia32/assembler-ia32.cc
+++ b/src/ia32/assembler-ia32.cc
@@ -2568,7 +2568,7 @@ void Assembler::RecordComment(const char* msg, bool force) {
 
 
 void Assembler::GrowBuffer() {
-  ASSERT(overflow());
+  ASSERT(buffer_overflow());
   if (!own_buffer_) FATAL("external code buffer is too small");
 
   // Compute new buffer size.
@@ -2627,7 +2627,7 @@ void Assembler::GrowBuffer() {
     }
   }
 
-  ASSERT(!overflow());
+  ASSERT(!buffer_overflow());
 }