Keep list of dex files for oat file in CompilerDriver.
Use this list to improve invoke-static/-direct dispatch for
intra-oat calls.
Also fix a latent ArmBaseRelativePatcher::ReserveSpaceEnd()
bug exposed by a buggy early version of this CL: when we
have unresolved patches at the end of all code, we need to
emit a final thunk. Though the OatWriter will try to patch
the unresolved call to a trampoline at the beginning of the
oat file, that trampoline may be too far and the relative
patcher doesn't know about it anyway, so it needs to assume
that a thunk is needed.
This reduces the overall size of oat files present in dalvik
cache on Nexus 9 after first boot by over 1MiB, AOSP ToT,
aosp_flounder-userdebug build.
Change-Id: I98604b70cb17377eed057c1c23971865cf344e43
diff --git a/dex2oat/dex2oat.cc b/dex2oat/dex2oat.cc
index 384b879..3ebd2f3 100644
--- a/dex2oat/dex2oat.cc
+++ b/dex2oat/dex2oat.cc
@@ -1495,6 +1495,7 @@
swap_fd_,
profile_file_));
+ driver_->SetDexFilesForOatFile(dex_files_);
driver_->CompileAll(class_loader, dex_files_, timings_);
}