Optimize stack maps: add fast path for no inline info.
Consumers of CodeInfo can skip significant chunks of work
if they can quickly determine that method has no inlining.
Store this fact as a flag bit at the start of code info.
This changes binary format and adds <0.1% to oat size.
I added the extra flag field as the simplest solution for now,
although I would like to use it for more things in the future.
(e.g. store the special cases of empty/deduped tables in it)
This improves app startup by 0.4% (maps,speed).
PMD on golem seems to gets around 15% faster.
Bug: 133257467
Test: ./art/test.py -b --host --64
Change-Id: Ia498a31bafc74b51cc95b8c70cf1da4b0e3d894e
diff --git a/compiler/optimizing/stack_map_stream.h b/compiler/optimizing/stack_map_stream.h
index 01c6bf9..20dd32e 100644
--- a/compiler/optimizing/stack_map_stream.h
+++ b/compiler/optimizing/stack_map_stream.h
@@ -99,6 +99,7 @@
ScopedArenaAllocator* allocator_;
const InstructionSet instruction_set_;
+ uint32_t flags_ = 0;
uint32_t packed_frame_size_ = 0;
uint32_t core_spill_mask_ = 0;
uint32_t fp_spill_mask_ = 0;