Mark instruction blocks with spills (for frame elision).

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 1263c3f8e122498829699c56455f12d54e31eaed..1168467612a60511a282e5f88e424c7573b35db3 100644
--- a/src/compiler/frame-elider.cc
+++ b/src/compiler/frame-elider.cc
@@ -20,6 +20,7 @@ void FrameElider::Run() {
 
 void FrameElider::MarkBlocks() {
   for (auto block : instruction_blocks()) {
+    if (block->needs_frame()) continue;
     for (auto i = block->code_start(); i < block->code_end(); ++i) {
       if (InstructionAt(i)->IsCall()) {
         block->mark_needs_frame();