X64 Crankshaft: Ported lots of boilerplate code.

src/x64/assembler-x64.cc

Index: src/x64/assembler-x64.cc
diff --git a/src/x64/assembler-x64.cc b/src/x64/assembler-x64.cc
index 36299677df653f4842e6d24cb0c11676fb33de61..9060d57586471b01bb852165abfaaaeee1dbaf86 100644
--- a/src/x64/assembler-x64.cc
+++ b/src/x64/assembler-x64.cc
@@ -186,6 +186,20 @@ void RelocInfo::PatchCode(byte* instructions, int instruction_count) {
   CPU::FlushICache(pc_, instruction_count);
 }
 
+
+// -----------------------------------------------------------------------------
+// Register constants.
+
+const int Register::registerCodeByAllocationIndex[kNumAllocatableRegisters] = {
+    // rax, rbx, rdx, rcx, rdi, r8, r9, r11, r14, r12
+    0, 3, 2, 1, 7, 8, 9, 11, 14, 12
+};
+
+const int Register::allocationIndexByRegisterCode[kNumRegisters] = {
+    0, 3, 2, 1, -1, -1, -1, 4, 5, 6, -1, 7, 9, -1, 8, -1
+};
+
+
 // -----------------------------------------------------------------------------
 // Implementation of Operand