[turbofan] Fix operand calculation for constant materialization from frame.

src/compiler/code-generator.cc

Index: src/compiler/code-generator.cc
diff --git a/src/compiler/code-generator.cc b/src/compiler/code-generator.cc
index 0650364ed1ab84bc0582002e903d3213711c8dc8..b091a5ceb8ffda5c142c7784197ac1e1cc2086f4 100644
--- a/src/compiler/code-generator.cc
+++ b/src/compiler/code-generator.cc
@@ -259,16 +259,15 @@ void CodeGenerator::RecordSafepoint(ReferenceMap* references,
   }
 }
 
-
 bool CodeGenerator::IsMaterializableFromFrame(Handle<HeapObject> object,
-                                              int* offset_return) {
+                                              int* slot_return) {
   if (linkage()->GetIncomingDescriptor()->IsJSFunctionCall()) {
     if (info()->has_context() && object.is_identical_to(info()->context()) &&
         !info()->is_osr()) {
-      *offset_return = StandardFrameConstants::kContextOffset;
+      *slot_return = Frame::kContextSlot;
       return true;
     } else if (object.is_identical_to(info()->closure())) {
-      *offset_return = JavaScriptFrameConstants::kFunctionOffset;
+      *slot_return = Frame::kJSFunctionSlot;
       return true;
     }
   }