[turbofan] remove schedule from InstructionSequence

src/compiler/instruction-selector.h

Index: src/compiler/instruction-selector.h
diff --git a/src/compiler/instruction-selector.h b/src/compiler/instruction-selector.h
index 805b282755111fe2c34c912b8d87ff1e282fe308..6d00b0464d3d05dd8e916eb61aa71fcf2d9737c3 100644
--- a/src/compiler/instruction-selector.h
+++ b/src/compiler/instruction-selector.h
@@ -25,7 +25,7 @@ class InstructionSelector FINAL {
   // Forward declarations.
   class Features;
 
-  InstructionSelector(InstructionSequence* sequence,
+  InstructionSelector(InstructionSequence* sequence, Schedule* schedule,
                       SourcePositionTable* source_positions,
                       Features features = SupportedFeatures());
 
@@ -184,7 +184,7 @@ class InstructionSelector FINAL {
   // ===========================================================================
 
   Linkage* linkage() const { return sequence()->linkage(); }
-  Schedule* schedule() const { return sequence()->schedule(); }
+  Schedule* schedule() const { return schedule_; }
   InstructionSequence* sequence() const { return sequence_; }
   Zone* instruction_zone() const { return sequence()->zone(); }
   Zone* zone() { return &zone_; }
@@ -195,6 +195,7 @@ class InstructionSelector FINAL {
   InstructionSequence* sequence_;
   SourcePositionTable* source_positions_;
   Features features_;
+  Schedule* schedule_;
   BasicBlock* current_block_;
   ZoneDeque<Instruction*> instructions_;
   BoolVector defined_;