A64: Synchronize with r17807.

src/arm/lithium-arm.cc

Index: src/arm/lithium-arm.cc
diff --git a/src/arm/lithium-arm.cc b/src/arm/lithium-arm.cc
index 6d02ba1b1bddb1f470d9eed0275ab7b0b94496b6..53ba309e61a3f5274121e3f0afc5ff87274baea1 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -1328,8 +1328,10 @@ LInstruction* LChunkBuilder::DoCallNewArray(HCallNewArray* instr) {
 LInstruction* LChunkBuilder::DoCallFunction(HCallFunction* instr) {
   LOperand* context = UseFixed(instr->context(), cp);
   LOperand* function = UseFixed(instr->function(), r1);
-  return MarkAsCall(
-      DefineFixed(new(zone()) LCallFunction(context, function), r0), instr);
+  LCallFunction* call = new(zone()) LCallFunction(context, function);
+  LInstruction* result = DefineFixed(call, r0);
+  if (instr->IsTailCall()) return result;
+  return MarkAsCall(result, instr);
 }
 
 
@@ -1783,6 +1785,16 @@ LInstruction* LChunkBuilder::DoCompareHoleAndBranch(
 }
 
 
+LInstruction* LChunkBuilder::DoCompareMinusZeroAndBranch(
+    HCompareMinusZeroAndBranch* instr) {
+  LInstruction* goto_instr = CheckElideControlInstruction(instr);
+  if (goto_instr != NULL) return goto_instr;
+  LOperand* value = UseRegister(instr->value());
+  LOperand* scratch = TempRegister();
+  return new(zone()) LCompareMinusZeroAndBranch(value, scratch);
+}
+
+
 LInstruction* LChunkBuilder::DoIsObjectAndBranch(HIsObjectAndBranch* instr) {
   ASSERT(instr->value()->representation().IsTagged());
   LOperand* value = UseRegisterAtStart(instr->value());
@@ -2489,7 +2501,7 @@ LInstruction* LChunkBuilder::DoParameter(HParameter* instr) {
     CodeStubInterfaceDescriptor* descriptor =
         info()->code_stub()->GetInterfaceDescriptor(info()->isolate());
     int index = static_cast<int>(instr->index());
-    Register reg = DESCRIPTOR_GET_PARAMETER_REGISTER(descriptor, index);
+    Register reg = descriptor->GetParameterRegister(index);
     return DefineFixed(result, reg);
   }
 }