VM: Use constant pool also for leaf runtime calls on x64, arm, arm64 and mips.

runtime/vm/assembler_arm.h

Index: runtime/vm/assembler_arm.h
diff --git a/runtime/vm/assembler_arm.h b/runtime/vm/assembler_arm.h
index 8218bb9faa85971e0412ebf7395d334c5a4529c8..79dbea8b317ceb52fdb97ff9f4474bb3d36895dc 100644
--- a/runtime/vm/assembler_arm.h
+++ b/runtime/vm/assembler_arm.h
@@ -608,22 +608,16 @@ class Assembler : public ValueObject {
 
   // Macros.
   // Branch to an entry address. Call sequence is never patched.
-  void Branch(const ExternalLabel* label, Condition cond = AL);
   void Branch(const StubEntry& stub_entry, Condition cond = AL);
 
   // Branch to an entry address. Call sequence can be patched or even replaced.
-  void BranchPatchable(const ExternalLabel* label);
   void BranchPatchable(const StubEntry& stub_entry);
 
-  // Branch and link to an entry address. Call sequence is never patched.
-  void BranchLink(const ExternalLabel* label);
-  void BranchLink(const StubEntry& stub_entry);
-
+  void BranchLink(const StubEntry& stub_entry,
+                  Patchability patchable = kNotPatchable);
   void BranchLink(const ExternalLabel* label, Patchability patchable);
-  void BranchLink(const StubEntry& stub_entry, Patchability patchable);
 
   // Branch and link to an entry address. Call sequence can be patched.
-  void BranchLinkPatchable(const ExternalLabel* label);
   void BranchLinkPatchable(const StubEntry& stub_entry);
 
   // Branch and link to [base + offset]. Call sequence is never patched.
@@ -996,6 +990,8 @@ class Assembler : public ValueObject {
   void BindARMv6(Label* label);
   void BindARMv7(Label* label);
 
+  void BranchLink(const ExternalLabel* label);
+
   class CodeComment : public ZoneAllocated {
    public:
     CodeComment(intptr_t pc_offset, const String& comment)