Add support for deoptimization on x64. ...

src/x64/assembler-x64.cc

Index: src/x64/assembler-x64.cc
===================================================================
--- src/x64/assembler-x64.cc	(revision 6418)
+++ src/x64/assembler-x64.cc	(working copy)
@@ -1278,6 +1278,18 @@
 }
 
 
+void Assembler::j(Condition cc, byte* entry, RelocInfo::Mode rmode) {
+  EnsureSpace ensure_space(this);
+  RecordRelocInfo(rmode);
+  last_pc_ = pc_;
+  ASSERT((0 <= cc) && (cc < 16));
+  // 0000 1111 1000 tttn #32-bit disp.
+  emit(0x0F);
+  emit(0x80 | cc);
+  emit(entry - (pc_ + sizeof(intptr_t)));
+}
+
+
 void Assembler::jmp(Label* L) {
   EnsureSpace ensure_space(this);
   last_pc_ = pc_;
@@ -1949,6 +1961,14 @@
 }
 
 
+void Assembler::push_imm32(int32_t imm32) {
+  EnsureSpace ensure_space(this);
+  last_pc_ = pc_;
+  emit(0x68);
+  emitl(imm32);
+}
+
+
 void Assembler::pushfq() {
   EnsureSpace ensure_space(this);
   last_pc_ = pc_;