[turbofan] Use proper parameter representation for stub calls.

src/compiler/linkage-impl.h

Index: src/compiler/linkage-impl.h
diff --git a/src/compiler/linkage-impl.h b/src/compiler/linkage-impl.h
index abd0696837d17a49c4f58e1d9ca8084968658069..a1137d76e678691781200cf81aee40b58d824328 100644
--- a/src/compiler/linkage-impl.h
+++ b/src/compiler/linkage-impl.h
@@ -164,13 +164,16 @@ class LinkageHelper {
       if (i < register_parameter_count) {
         // The first parameters go in registers.
         Register reg = descriptor.GetEnvironmentParameterRegister(i);
+        Representation rep =
+            descriptor.GetEnvironmentParameterRepresentation(i);
         locations.AddParam(regloc(reg));
+        types.AddParam(reptyp(rep));
       } else {
         // The rest of the parameters go on the stack.
         int stack_slot = i - register_parameter_count - stack_parameter_count;
         locations.AddParam(stackloc(stack_slot));
+        types.AddParam(kMachAnyTagged);
       }
-      types.AddParam(kMachAnyTagged);
     }
     // Add context.
     locations.AddParam(regloc(LinkageTraits::ContextReg()));
@@ -232,6 +235,34 @@ class LinkageHelper {
     DCHECK_LT(i, 0);
     return LinkageLocation(i);
   }
+
+  static MachineType reptyp(Representation representation) {
+    switch (representation.kind()) {
+      case Representation::kInteger8:
+        return kMachInt8;
+      case Representation::kUInteger8:
+        return kMachUint8;
+      case Representation::kInteger16:
+        return kMachInt16;
+      case Representation::kUInteger16:
+        return kMachUint16;
+      case Representation::kInteger32:
+        return kMachInt32;
+      case Representation::kSmi:
+      case Representation::kTagged:
+      case Representation::kHeapObject:
+        return kMachAnyTagged;
+      case Representation::kDouble:
+        return kMachFloat64;
+      case Representation::kExternal:
+        return kMachPtr;
+      case Representation::kNone:
+      case Representation::kNumRepresentations:
+        break;
+    }
+    UNREACHABLE();
+    return kMachNone;
+  }
 };
 
 
@@ -254,7 +285,6 @@ LinkageLocation Linkage::GetOsrValueLocation(int index) const {
   }
 }
 
-
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8