JIT baseline: trigger optimized compilation on hotness threshold.

- Add a new hotness count in the ProfilingInfo to not conflict with
interpreter hotness which may use it for OSR.
- Add a baseline flag in the OatQuickMethodHeader to identify baseline
compiled methods.
- Add a -Xusetieredjit flag to experiment and test.

Bug: 119800099
Test: test.py with Xusetieredjit to true

Change-Id: I8512853f869f1312e3edc60bf64413dee9143c52

1 files changed, 8 insertions, 0 deletions

diff --git a/compiler/optimizing/nodes.h b/compiler/optimizing/nodes.h
index 09ae6fab84..043338466f 100644
--- a/compiler/optimizing/nodes.h
+++ b/compiler/optimizing/nodes.h
@@ -322,6 +322,7 @@ class HGraph : public ArenaObject<kArenaAllocGraph> {
          bool debuggable = false,
          bool osr = false,
          bool is_shared_jit_code = false,
+         bool baseline = false,
          int start_instruction_id = 0)
       : allocator_(allocator),
         arena_stack_(arena_stack),
@@ -358,6 +359,7 @@ class HGraph : public ArenaObject<kArenaAllocGraph> {
         art_method_(nullptr),
         inexact_object_rti_(ReferenceTypeInfo::CreateInvalid()),
         osr_(osr),
+        baseline_(baseline),
         cha_single_implementation_list_(allocator->Adapter(kArenaAllocCHA)),
         is_shared_jit_code_(is_shared_jit_code) {
     blocks_.reserve(kDefaultNumberOfBlocks);
@@ -589,6 +591,8 @@ class HGraph : public ArenaObject<kArenaAllocGraph> {
 
   bool IsCompilingOsr() const { return osr_; }
 
+  bool IsCompilingBaseline() const { return baseline_; }
+
   bool IsCompilingForSharedJitCode() const {
     return is_shared_jit_code_;
   }
@@ -786,6 +790,10 @@ class HGraph : public ArenaObject<kArenaAllocGraph> {
   // compiled code entries which the interpreter can directly jump to.
   const bool osr_;
 
+  // Whether we are compiling baseline (not running optimizations). This affects
+  // the code being generated.
+  const bool baseline_;
+
   // List of methods that are assumed to have single implementation.
   ArenaSet<ArtMethod*> cha_single_implementation_list_;