Plug code generator into liveness analysis.

Also implement spill slot support.

Change-Id: If5e28811e9fbbf3842a258772c633318a2f4fafc

1 files changed, 7 insertions, 0 deletions

diff --git a/compiler/optimizing/register_allocator.h b/compiler/optimizing/register_allocator.h
index e575b96..3393a04 100644
--- a/compiler/optimizing/register_allocator.h
+++ b/compiler/optimizing/register_allocator.h
@@ -55,6 +55,7 @@ class RegisterAllocator {
 
   // Helper method for validation. Used by unit testing.
   static bool ValidateIntervals(const GrowableArray<LiveInterval*>& intervals,
+                                size_t number_of_spill_slots,
                                 const CodeGenerator& codegen,
                                 ArenaAllocator* allocator,
                                 bool processing_core_registers,
@@ -75,6 +76,9 @@ class RegisterAllocator {
   // Returns whether `reg` is blocked by the code generator.
   bool IsBlocked(int reg) const;
 
+  // Allocate a spill slot for the given interval.
+  void AllocateSpillSlotFor(LiveInterval* interval);
+
   // Helper methods.
   void AllocateRegistersInternal(const SsaLivenessAnalysis& liveness);
   bool ValidateInternal(const SsaLivenessAnalysis& liveness, bool log_fatal_on_failure) const;
@@ -98,6 +102,9 @@ class RegisterAllocator {
   // That is, they have a lifetime hole that spans the start of the new interval.
   GrowableArray<LiveInterval*> inactive_;
 
+  // The spill slots allocated for live intervals.
+  GrowableArray<size_t> spill_slots_;
+
   // True if processing core registers. False if processing floating
   // point registers.
   bool processing_core_registers_;