[turbofan] Relax dependencies due to deopt during instruction scheduling.

src/compiler/instruction-scheduler.cc

Index: src/compiler/instruction-scheduler.cc
diff --git a/src/compiler/instruction-scheduler.cc b/src/compiler/instruction-scheduler.cc
index a49e3a557d09ef80b0adb692660b47cd17b320e6..c7fd1ccd667b145bac22d4275665ebb051026e35 100644
--- a/src/compiler/instruction-scheduler.cc
+++ b/src/compiler/instruction-scheduler.cc
@@ -136,9 +136,9 @@ void InstructionScheduler::AddInstruction(Instruction* instr) {
       last_live_in_reg_marker_->AddSuccessor(new_node);
     }
 
-    // Make sure that new instructions are not scheduled before the last
-    // deoptimization point.
-    if (last_deopt_ != nullptr) {
+    // Make sure that instructions are not scheduled before the last
+    // deoptimization point when they depend on it.
+    if ((last_deopt_ != nullptr) && DependsOnDeoptimization(instr)) {
       last_deopt_->AddSuccessor(new_node);
     }