[turbofan] Move frame elision logic to the end

src/compiler/frame-elider.cc

Index: src/compiler/frame-elider.cc
diff --git a/src/compiler/frame-elider.cc b/src/compiler/frame-elider.cc
index 172a724dd8a744dce535f47f96ec9f1342d3d4d1..680c2197e446b5bdb9f5c68859cf0cb89a862bd3 100644
--- a/src/compiler/frame-elider.cc
+++ b/src/compiler/frame-elider.cc
@@ -2,8 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "src/base/adapters.h"
 #include "src/compiler/frame-elider.h"
+#include "src/base/adapters.h"
+#include "src/compiler/linkage.h"
 
 namespace v8 {
 namespace internal {
@@ -11,8 +12,12 @@ namespace compiler {
 
 FrameElider::FrameElider(InstructionSequence* code) : code_(code) {}
 
-void FrameElider::Run() {
-  MarkBlocks();
+void FrameElider::Run(const CallDescriptor* descriptor) {
+  if (descriptor != nullptr && descriptor->RequiresFrameAsIncoming()) {

[danno, 2016/03/18 18:13:00]

Passing in the CallDescriptor here seems weird. I liked the old way better. Can
you not just mark the first block externally in the pipeline?

[Mircea Trofin, 2016/03/18 18:22:31]

Done.

+    instruction_blocks()[0]->mark_needs_frame();
+  } else {
+    MarkBlocks();
+  }
   PropagateMarks();
   MarkDeConstruction();
 }