[turbofan] Introduce optional Float64Min and Float64Max machine operators.

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 05d1bdd4f2178c73885a431aa5142ec276469d22..2a3384d68d6fbe965a1285e34108715163c45e69 100644
--- a/src/ia32/assembler-ia32.cc
+++ b/src/ia32/assembler-ia32.cc
@@ -2235,6 +2235,24 @@ void Assembler::punpckhdq(XMMRegister dst, XMMRegister src) {
 }
 
 
+void Assembler::maxsd(XMMRegister dst, const Operand& src) {
+  EnsureSpace ensure_space(this);
+  EMIT(0xF2);
+  EMIT(0x0F);
+  EMIT(0x5F);
+  emit_sse_operand(dst, src);
+}
+
+
+void Assembler::minsd(XMMRegister dst, const Operand& src) {
+  EnsureSpace ensure_space(this);
+  EMIT(0xF2);
+  EMIT(0x0F);
+  EMIT(0x5D);
+  emit_sse_operand(dst, src);
+}
+
+
 void Assembler::cmpltsd(XMMRegister dst, XMMRegister src) {
   EnsureSpace ensure_space(this);
   EMIT(0xF2);