Convert ToBooleanStub to a HydrogenStub. Currently just using HBranch, which is still fully impleme…

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index aed649291e15b350dfdab040dc1966c245812bc3..17e3646a90e572063cddd7113a7f55d5cc1b04e6 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -2234,6 +2234,7 @@ void LCodeGen::DoBranch(LBranch* instr) {
   int true_block = chunk_->LookupDestination(instr->true_block_id());
   int false_block = chunk_->LookupDestination(instr->false_block_id());
 
+  FOR_ASSERT(bool considered_typefeedback = false);
   Representation r = instr->hydrogen()->value()->representation();
   if (r.IsInteger32() || r.IsSmi()) {
     Register reg = ToRegister(instr->value());
@@ -2259,6 +2260,7 @@ void LCodeGen::DoBranch(LBranch* instr) {
       Label* true_label = chunk_->GetAssemblyLabel(true_block);
       Label* false_label = chunk_->GetAssemblyLabel(false_block);
 
+      FOR_ASSERT(considered_typefeedback = true);
       ToBooleanStub::Types expected = instr->hydrogen()->expected_input_types();
       // Avoid deopts in the case where we've never executed this path before.
       if (expected.IsEmpty()) expected = ToBooleanStub::all_types();
@@ -2346,6 +2348,8 @@ void LCodeGen::DoBranch(LBranch* instr) {
       DeoptimizeIf(al, instr->environment());
     }
   }
+  // Make sure not to poison the stub cache.
+  ASSERT(info()->IsStub() ? considered_typefeedback : true);
 }