Improve HLoadClass code generation.
For classes in the boot image, use either direct pointers
or PC-relative addresses. For other classes, use PC-relative
access to the dex cache arrays for AOT and direct address of
the type's dex cache slot for JIT.
For aosp_flounder-userdebug:
- 32-bit boot.oat: -252KiB (-0.3%)
- 64-bit boot.oat: -412KiB (-0.4%)
- 32-bit dalvik cache total: -392KiB (-0.4%)
- 64-bit dalvik-cache total: -2312KiB (-1.0%)
(contains more files than the 32-bit dalvik cache)
For aosp_flounder-userdebug forced to compile PIC:
- 32-bit boot.oat: -124KiB (-0.2%)
- 64-bit boot.oat: -420KiB (-0.5%)
- 32-bit dalvik cache total: -136KiB (-0.1%)
- 64-bit dalvik-cache total: -1136KiB (-0.5%)
(contains more files than the 32-bit dalvik cache)
Bug: 27950288
Change-Id: I4da991a4b7e53c63c92558b97923d18092acf139
diff --git a/compiler/optimizing/code_generator_x86_64.h b/compiler/optimizing/code_generator_x86_64.h
index 7cf1245..cf4cc4c 100644
--- a/compiler/optimizing/code_generator_x86_64.h
+++ b/compiler/optimizing/code_generator_x86_64.h
@@ -388,6 +388,11 @@
HLoadString::LoadKind GetSupportedLoadStringKind(
HLoadString::LoadKind desired_string_load_kind) OVERRIDE;
+ // Check if the desired_class_load_kind is supported. If it is, return it,
+ // otherwise return a fall-back kind that should be used instead.
+ HLoadClass::LoadKind GetSupportedLoadClassKind(
+ HLoadClass::LoadKind desired_class_load_kind) OVERRIDE;
+
// Check if the desired_dispatch_info is supported. If it is, return it,
// otherwise return a fall-back info that should be used instead.
HInvokeStaticOrDirect::DispatchInfo GetSupportedInvokeStaticOrDirectDispatch(
@@ -400,6 +405,7 @@
void RecordSimplePatch();
void RecordStringPatch(HLoadString* load_string);
+ void RecordTypePatch(HLoadClass* load_class);
Label* NewPcRelativeDexCacheArrayPatch(const DexFile& dex_file, uint32_t element_offset);
void MoveFromReturnRegister(Location trg, Primitive::Type type) OVERRIDE;
@@ -569,6 +575,8 @@
ArenaDeque<Label> simple_patches_;
// String patch locations.
ArenaDeque<StringPatchInfo<Label>> string_patches_;
+ // Type patch locations.
+ ArenaDeque<TypePatchInfo<Label>> type_patches_;
// Fixups for jump tables need to be handled specially.
ArenaVector<JumpTableRIPFixup*> fixups_to_jump_tables_;