[turbofan] Deprecate CompilationInfo::has_literal predicate.

Now that the SharedFunctionInfo is available to compilers all of the
time, we no longer need to rely on the literal for source printing.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/1866613003

Cr-Commit-Position: refs/heads/master@{#35326}

src/compiler.cc

@@ -115,11 +115,6 @@ bool CompilationInfo::has_context() const {
 }
 
 
-bool CompilationInfo::has_literal() const {
-  return parse_info_ && parse_info_->literal() != nullptr;
-}
-
-
 bool CompilationInfo::has_scope() const {
   return parse_info_ && parse_info_->scope() != nullptr;
 }

src/compiler.h

@@ -185,7 +185,6 @@ class CompilationInfo {
   Handle<SharedFunctionInfo> shared_info() const;
   bool has_shared_info() const;
   bool has_context() const;
-  bool has_literal() const;
   bool has_scope() const;
   // -----------------------------------------------------------
 

src/compiler/linkage.cc

@@ -118,13 +118,6 @@ bool CallDescriptor::CanTailCall(const Node* node,
 
 CallDescriptor* Linkage::ComputeIncoming(Zone* zone, CompilationInfo* info) {
   DCHECK(!info->IsStub());
-  if (info->has_literal()) {
-    // If we already have the function literal, use the number of parameters
-    // plus the receiver.
-    return GetJSCallDescriptor(zone, info->is_osr(),
-                               1 + info->literal()->parameter_count(),
-                               CallDescriptor::kNoFlags);
-  }
   if (!info->closure().is_null()) {
     // If we are compiling a JS function, use a JS call descriptor,
     // plus the receiver.

src/compiler/pipeline.cc

@@ -1112,12 +1112,10 @@ Handle<Code> Pipeline::GenerateCode() {
       int pos = info()->shared_info()->start_position();
       json_of << "{\"function\":\"" << function_name.get()
               << "\", \"sourcePosition\":" << pos << ", \"source\":\"";
-      if (info()->has_literal() && !script->IsUndefined() &&
-          !script->source()->IsUndefined()) {
+      if (!script->IsUndefined() && !script->source()->IsUndefined()) {
         DisallowHeapAllocation no_allocation;
-        FunctionLiteral* function = info()->literal();
-        int start = function->start_position();
-        int len = function->end_position() - start;
+        int start = info()->shared_info()->start_position();
+        int len = info()->shared_info()->end_position() - start;
         String::SubStringRange source(String::cast(script->source()), start,
                                       len);
         for (const auto& c : source) {