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

src/crankshaft/ia32/lithium-codegen-ia32.cc

Index: src/crankshaft/ia32/lithium-codegen-ia32.cc
diff --git a/src/crankshaft/ia32/lithium-codegen-ia32.cc b/src/crankshaft/ia32/lithium-codegen-ia32.cc
index 104da6a849aca74084c54b37b903384206ef7a88..d8ce1867706ea912ae6b9aab28e61864c63d275f 100644
--- a/src/crankshaft/ia32/lithium-codegen-ia32.cc
+++ b/src/crankshaft/ia32/lithium-codegen-ia32.cc
@@ -2931,6 +2931,7 @@ 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(eax);
@@ -3483,6 +3484,7 @@ 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 ebx, ecx and edx as scratch registers here given that
     // 1) we are not going to return to caller function anyway,