Use direct jump and call instruction for X64 when the deoptimization entries are in the code range

src/x64/assembler-x64.cc

Index: src/x64/assembler-x64.cc
===================================================================
--- src/x64/assembler-x64.cc	(revision 13219)
+++ src/x64/assembler-x64.cc	(working copy)
@@ -349,6 +349,7 @@
 Assembler::Assembler(Isolate* isolate, void* buffer, int buffer_size)
     : AssemblerBase(isolate, buffer, buffer_size),
       code_targets_(100),
+      deopt_entries_(100),
       positions_recorder_(this) {
   // Clear the buffer in debug mode unless it was provided by the
   // caller in which case we can't be sure it's okay to overwrite
@@ -833,6 +834,16 @@
 }
 
 
+void Assembler::call(Address entry, RelocInfo::Mode rmode) {
+  positions_recorder()->WriteRecordedPositions();
+  EnsureSpace ensure_space(this);
+  ASSERT(RelocInfo::IsDeoptEntry(rmode));
+  // 1110 1000 #32-bit disp.
+  emit(0xE8);
+  emit_deopt_entry(entry, rmode);
+}
+
+
 void Assembler::call(Handle<Code> target,
                      RelocInfo::Mode rmode,
                      TypeFeedbackId ast_id) {
@@ -1239,6 +1250,16 @@
 }
 
 
+void Assembler::j(Condition cc, byte* entry, RelocInfo::Mode rmode) {
+  EnsureSpace ensure_space(this);
+  ASSERT(RelocInfo::IsDeoptEntry(rmode));
+  ASSERT(is_uint4(cc));
+  emit(0x0F);
+  emit(0x80 | cc);
+  emit_deopt_entry(entry, rmode);
+}
+
+
 void Assembler::j(Condition cc,
                   Handle<Code> target,
                   RelocInfo::Mode rmode) {
@@ -1293,6 +1314,14 @@
 }
 
 
+void Assembler::jmp(byte* entry, RelocInfo::Mode rmode) {
+  EnsureSpace ensure_space(this);
+  ASSERT(RelocInfo::IsDeoptEntry(rmode));
+  emit(0xE9);
+  emit_deopt_entry(entry, rmode);
+}
+
+
 void Assembler::jmp(Handle<Code> target, RelocInfo::Mode rmode) {
   EnsureSpace ensure_space(this);
   // 1110 1001 #32-bit disp.
@@ -3024,6 +3053,7 @@
 
 
 const int RelocInfo::kApplyMask = RelocInfo::kCodeTargetMask |
+    1 << RelocInfo::DEOPT_ENTRY |
     1 << RelocInfo::INTERNAL_REFERENCE |
     1 << RelocInfo::CODE_AGE_SEQUENCE;