Use PC-relative pointer to boot image methods.

In preparation for adding ArtMethod entries to the .bss
section, add direct PC-relative pointers to methods so that
the number of needed .bss entries for boot image is small.

Test: m test-art-host-gtest
Test: testrunner.py --host
Test: testrunner.py --target on Nexus 6P
Test: Nexus 6P boots.
Test: Build aosp_mips64-userdebug
Bug: 30627598
Change-Id: Ia89f5f9975b741ddac2816e1570077ba4b4c020f
diff --git a/compiler/optimizing/code_generator_x86.h b/compiler/optimizing/code_generator_x86.h
index f08d642..21c527e 100644
--- a/compiler/optimizing/code_generator_x86.h
+++ b/compiler/optimizing/code_generator_x86.h
@@ -413,9 +413,10 @@
   // Generate a call to a virtual method.
   void GenerateVirtualCall(HInvokeVirtual* invoke, Location temp) OVERRIDE;
 
-  void RecordBootStringPatch(HLoadString* load_string);
+  void RecordBootMethodPatch(HInvokeStaticOrDirect* invoke);
   void RecordBootTypePatch(HLoadClass* load_class);
   Label* NewTypeBssEntryPatch(HLoadClass* load_class);
+  void RecordBootStringPatch(HLoadString* load_string);
   Label* NewStringBssEntryPatch(HLoadString* load_string);
   Label* NewPcRelativeDexCacheArrayPatch(HX86ComputeBaseMethodAddress* method_address,
                                          const DexFile& dex_file,
@@ -633,16 +634,17 @@
 
   // PC-relative DexCache access info.
   ArenaDeque<X86PcRelativePatchInfo> pc_relative_dex_cache_patches_;
-  // String patch locations; type depends on configuration (app .bss or boot image).
-  ArenaDeque<X86PcRelativePatchInfo> string_patches_;
+  // PC-relative method patch info for kBootImageLinkTimePcRelative.
+  ArenaDeque<X86PcRelativePatchInfo> boot_image_method_patches_;
   // PC-relative type patch info for kBootImageLinkTimePcRelative.
   ArenaDeque<X86PcRelativePatchInfo> boot_image_type_patches_;
   // Type patch locations for kBssEntry.
   ArenaDeque<X86PcRelativePatchInfo> type_bss_entry_patches_;
+  // String patch locations; type depends on configuration (app .bss or boot image).
+  ArenaDeque<X86PcRelativePatchInfo> string_patches_;
 
   // Patches for string root accesses in JIT compiled code.
   ArenaDeque<PatchInfo<Label>> jit_string_patches_;
-
   // Patches for class root accesses in JIT compiled code.
   ArenaDeque<PatchInfo<Label>> jit_class_patches_;