[compiler] Allow for StackSlots of arbitrary size

src/compiler/instruction-selector.cc

Index: src/compiler/instruction-selector.cc
diff --git a/src/compiler/instruction-selector.cc b/src/compiler/instruction-selector.cc
index a6cfa50ef249b4def953c3b9dab106d5029127e5..ae96b9106f390d72ed11e34ae2ab027c00d6f244 100644
--- a/src/compiler/instruction-selector.cc
+++ b/src/compiler/instruction-selector.cc
@@ -1632,7 +1632,7 @@ void InstructionSelector::EmitLookupSwitch(const SwitchInfo& sw,
 }
 
 void InstructionSelector::VisitStackSlot(Node* node) {
-  int size = 1 << ElementSizeLog2Of(StackSlotRepresentationOf(node->op()));
+  int size = StackSlotSizeOf(node->op());
   int slot = frame_->AllocateSpillSlot(size);
   OperandGenerator g(this);