commit a2f526f889be06f96ea59624c9dfb1223b3839f3
author Mathieu Chartier <mathieuc@google.com> Thu Jan 19 14:48:48 2017 -0800
committer Mathieu Chartier <mathieuc@google.com> Fri Jan 20 15:47:06 2017 -0800
tree 769f517e6664de0e89abeadf07a39d5410fcee42
parent 64e50021845b1ad9d8851596e8aaddf18be217c2

Compressed native PC for stack maps

Compress native PC based on instruction alignment. This reduces the
size of stack maps, boot.oat is 0.4% smaller for arm64.

Test: test-art-host, test-art-target, N6P booting

Change-Id: I2b70eecabda88b06fa80a85688fd992070d54278

compiler/optimizing/code_generator.h

diff --git a/compiler/optimizing/code_generator.h b/compiler/optimizing/code_generator.h
index 38d532e..2d129af 100644
--- a/compiler/optimizing/code_generator.h
+++ b/compiler/optimizing/code_generator.h
@@ -608,7 +608,7 @@
         number_of_register_pairs_(number_of_register_pairs),
         core_callee_save_mask_(core_callee_save_mask),
         fpu_callee_save_mask_(fpu_callee_save_mask),
-        stack_map_stream_(graph->GetArena()),
+        stack_map_stream_(graph->GetArena(), graph->GetInstructionSet()),
         block_order_(nullptr),
         jit_string_roots_(StringReferenceValueComparator(),
                           graph->GetArena()->Adapter(kArenaAllocCodeGenerator)),