[crankshaft] Added checks to tail call instructions that we don't have to restore caller doubles.

src/crankshaft/mips64/lithium-codegen-mips64.cc

Index: src/crankshaft/mips64/lithium-codegen-mips64.cc
diff --git a/src/crankshaft/mips64/lithium-codegen-mips64.cc b/src/crankshaft/mips64/lithium-codegen-mips64.cc
index 24ae4407fd7bb46e6f7a5c9ff90361db593f156c..ed1ab37ee300a498055c96b2ab77d26a97ad2bcd 100644
--- a/src/crankshaft/mips64/lithium-codegen-mips64.cc
+++ b/src/crankshaft/mips64/lithium-codegen-mips64.cc
@@ -3304,6 +3304,7 @@ void LCodeGen::DoApplyArguments(LApplyArguments* instr) {
 
   InvokeFlag flag = CALL_FUNCTION;
   if (instr->hydrogen()->tail_call_mode() == TailCallMode::kAllow) {
+    DCHECK(!info()->saves_caller_doubles());
     // TODO(ishell): drop current frame before pushing arguments to the stack.
     flag = JUMP_FUNCTION;
     ParameterCount actual(a0);
@@ -3816,6 +3817,7 @@ void LCodeGen::DoInvokeFunction(LInvokeFunction* instr) {
   bool is_tail_call = hinstr->tail_call_mode() == TailCallMode::kAllow;
 
   if (is_tail_call) {
+    DCHECK(!info()->saves_caller_doubles());
     ParameterCount actual(instr->arity());
     // It is safe to use t0, t1 and t2 as scratch registers here given that
     // we are not going to return to caller function anyway.