[turbofan] Various fixes to allow unboxed doubles as arguments in registers and on the stack.

src/compiler/linkage.cc

Index: src/compiler/linkage.cc
diff --git a/src/compiler/linkage.cc b/src/compiler/linkage.cc
index 93b9a66ec203016c2f8b6791f935569b5f596ee7..2c6d2a8ae41430da5d01ed82aea4cb35ffcadcfe 100644
--- a/src/compiler/linkage.cc
+++ b/src/compiler/linkage.cc
@@ -70,7 +70,7 @@ std::ostream& operator<<(std::ostream& os, const CallDescriptor::Kind& k) {
 std::ostream& operator<<(std::ostream& os, const CallDescriptor& d) {
   // TODO(svenpanne) Output properties etc. and be less cryptic.
   return os << d.kind() << ":" << d.debug_name() << ":r" << d.ReturnCount()
-            << "j" << d.JSParameterCount() << "i" << d.InputCount() << "f"
+            << "s" << d.StackParameterCount() << "i" << d.InputCount() << "f"
             << d.FrameStateCount() << "t" << d.SupportsTailCalls();
 }
 
@@ -189,8 +189,7 @@ CallDescriptor* Linkage::ComputeIncoming(Zone* zone, CompilationInfo* info) {
 }
 
 
-FrameOffset Linkage::GetFrameOffset(int spill_slot, Frame* frame,
-                                    int extra) const {
+FrameOffset Linkage::GetFrameOffset(int spill_slot, Frame* frame) const {
   if (frame->GetSpillSlotCount() > 0 || incoming_->IsJSFunctionCall() ||
       incoming_->kind() == CallDescriptor::kCallAddress) {
     int offset;
@@ -198,12 +197,11 @@ FrameOffset Linkage::GetFrameOffset(int spill_slot, Frame* frame,
     if (spill_slot >= 0) {
       // Local or spill slot. Skip the frame pointer, function, and
       // context in the fixed part of the frame.
-      offset =
-          -(spill_slot + 1) * kPointerSize - register_save_area_size + extra;
+      offset = -(spill_slot + 1) * kPointerSize - register_save_area_size;
     } else {
       // Incoming parameter. Skip the return address.
       offset = -(spill_slot + 1) * kPointerSize + kFPOnStackSize +
-               kPCOnStackSize + extra;
+               frame->PCOnStackSize();
     }
     return FrameOffset::FromFramePointer(offset);
   } else {
@@ -211,7 +209,7 @@ FrameOffset Linkage::GetFrameOffset(int spill_slot, Frame* frame,
     DCHECK(spill_slot < 0);  // Must be a parameter.
     int register_save_area_size = frame->GetRegisterSaveAreaSize();
     int offset = register_save_area_size - (spill_slot + 1) * kPointerSize +
-                 kPCOnStackSize + extra;
+                 frame->PCOnStackSize();
     return FrameOffset::FromStackPointer(offset);
   }
 }