Use bit-level packing for InlineInfo in stackmaps as well.

Use the same approach as we do for stackmaps to reduce the size.

It saves 4.0 MB from non-debuggable boot.oat (AOSP).
It does not affect debuggable boot.oat.

It saves 3.6 MB (of 96.6 MB) from /system/framework/arm/ (GOOG).
It saves 0.6 MB (of 26.7 MB) from /system/framework/oat/arm/ (GOOG).

Field loads from inline-info get around 5% slower.
(based on the time it takes to load all inline-infos from boot.oat)

Change-Id: I67b0fa5eef74c1fdb013680d0231fd44ea696176

1 files changed, 2 insertions, 1 deletions

diff --git a/compiler/optimizing/stack_map_stream.h b/compiler/optimizing/stack_map_stream.h
index b686748802..41f72f508b 100644
--- a/compiler/optimizing/stack_map_stream.h
+++ b/compiler/optimizing/stack_map_stream.h
@@ -156,7 +156,7 @@ class StackMapStream : public ValueObject {
   size_t ComputeDexRegisterMapSize(uint32_t num_dex_registers,
                                    const BitVector* live_dex_registers_mask) const;
   size_t ComputeDexRegisterMapsSize() const;
-  size_t ComputeInlineInfoSize() const;
+  void ComputeInlineInfoEncoding();
 
   // Returns the index of an entry with the same dex register map as the current_entry,
   // or kNoSameDexMapFound if no such entry exists.
@@ -200,6 +200,7 @@ class StackMapStream : public ValueObject {
   StackMapEntry current_entry_;
   InlineInfoEntry current_inline_info_;
   StackMapEncoding stack_map_encoding_;
+  InlineInfoEncoding inline_info_encoding_;
   ArenaVector<uint8_t> code_info_encoding_;
   size_t inline_info_size_;
   size_t dex_register_maps_size_;