X87: [x86] Sane default for Label::Distance on JumpIfRoot/JumpIfNotRoot.

  port c83db2d0 (r32456)

  original commit message:

BUG=

Review URL: https://codereview.chromium.org/1487293002

Cr-Commit-Position: refs/heads/master@{#32486}

src/x87/macro-assembler-x87.h

@@ -81,13 +81,13 @@ class MacroAssembler: public Assembler {
 
   // Compare the object in a register to a value and jump if they are equal.
   void JumpIfRoot(Register with, Heap::RootListIndex index, Label* if_equal,
-                  Label::Distance if_equal_distance = Label::kNear) {
+                  Label::Distance if_equal_distance = Label::kFar) {
     CompareRoot(with, index);
     j(equal, if_equal, if_equal_distance);
   }
   void JumpIfRoot(const Operand& with, Heap::RootListIndex index,
                   Label* if_equal,
-                  Label::Distance if_equal_distance = Label::kNear) {
+                  Label::Distance if_equal_distance = Label::kFar) {
     CompareRoot(with, index);
     j(equal, if_equal, if_equal_distance);
   }
@@ -95,13 +95,13 @@ class MacroAssembler: public Assembler {
   // Compare the object in a register to a value and jump if they are not equal.
   void JumpIfNotRoot(Register with, Heap::RootListIndex index,
                      Label* if_not_equal,
-                     Label::Distance if_not_equal_distance = Label::kNear) {
+                     Label::Distance if_not_equal_distance = Label::kFar) {
     CompareRoot(with, index);
     j(not_equal, if_not_equal, if_not_equal_distance);
   }
   void JumpIfNotRoot(const Operand& with, Heap::RootListIndex index,
                      Label* if_not_equal,
-                     Label::Distance if_not_equal_distance = Label::kNear) {
+                     Label::Distance if_not_equal_distance = Label::kFar) {
     CompareRoot(with, index);
     j(not_equal, if_not_equal, if_not_equal_distance);
   }