Make ART compile with GCC -O0 again.

Tidy up InstructionSetFeatures so that it has a type hierarchy dependent on
architecture.
Add to instruction_set_test to warn when InstructionSetFeatures don't agree
with ones from system properties, AT_HWCAP and /proc/cpuinfo.
Clean-up class linker entry point logic to not return entry points but to
test whether the passed code is the particular entrypoint. This works around
image trampolines that replicate entrypoints.
Bug: 17993736

Change-Id: I5f4b49e88c3b02a79f9bee04f83395146ed7be23
diff --git a/runtime/arch/arm64/asm_support_arm64.S b/runtime/arch/arm64/asm_support_arm64.S
index fb49460..b3e9242 100644
--- a/runtime/arch/arm64/asm_support_arm64.S
+++ b/runtime/arch/arm64/asm_support_arm64.S
@@ -52,15 +52,6 @@
     .cfi_startproc
 .endm
 
-.macro ENTRY_NO_HIDE name
-    .type \name, #function
-    .global \name
-    /* Cache alignment for function entry */
-    .balign 16
-\name:
-    .cfi_startproc
-.endm
-
 .macro END name
     .cfi_endproc
     .size \name, .-\name
@@ -72,10 +63,4 @@
     END \name
 .endm
 
-.macro UNIMPLEMENTED_NO_HIDE name
-    ENTRY_NO_HIDE \name
-    brk 0
-    END \name
-.endm
-
 #endif  // ART_RUNTIME_ARCH_ARM64_ASM_SUPPORT_ARM64_S_
diff --git a/runtime/arch/arm64/entrypoints_init_arm64.cc b/runtime/arch/arm64/entrypoints_init_arm64.cc
index 70e93b3..871e1d1 100644
--- a/runtime/arch/arm64/entrypoints_init_arm64.cc
+++ b/runtime/arch/arm64/entrypoints_init_arm64.cc
@@ -20,17 +20,11 @@
 #include "entrypoints/quick/quick_entrypoints.h"
 #include "entrypoints/entrypoint_utils.h"
 #include "entrypoints/math_entrypoints.h"
+#include "entrypoints/runtime_asm_entrypoints.h"
+#include "interpreter/interpreter.h"
 
 namespace art {
 
-// Interpreter entrypoints.
-extern "C" void artInterpreterToInterpreterBridge(Thread* self, MethodHelper& mh,
-                                                 const DexFile::CodeItem* code_item,
-                                                 ShadowFrame* shadow_frame, JValue* result);
-extern "C" void artInterpreterToCompiledCodeBridge(Thread* self, MethodHelper& mh,
-                                           const DexFile::CodeItem* code_item,
-                                           ShadowFrame* shadow_frame, JValue* result);
-
 // Portable entrypoints.
 extern "C" void art_portable_resolution_trampoline(mirror::ArtMethod*);
 extern "C" void art_portable_to_interpreter_bridge(mirror::ArtMethod*);
diff --git a/runtime/arch/arm64/portable_entrypoints_arm64.S b/runtime/arch/arm64/portable_entrypoints_arm64.S
index 41711b5..9e2c030 100644
--- a/runtime/arch/arm64/portable_entrypoints_arm64.S
+++ b/runtime/arch/arm64/portable_entrypoints_arm64.S
@@ -25,4 +25,6 @@
 
 UNIMPLEMENTED art_portable_resolution_trampoline
 
-UNIMPLEMENTED_NO_HIDE art_portable_to_interpreter_bridge
+UNIMPLEMENTED art_portable_to_interpreter_bridge
+
+UNIMPLEMENTED art_portable_imt_conflict_trampoline
diff --git a/runtime/arch/arm64/quick_entrypoints_arm64.S b/runtime/arch/arm64/quick_entrypoints_arm64.S
index 52a2a88..ab9bf2d 100644
--- a/runtime/arch/arm64/quick_entrypoints_arm64.S
+++ b/runtime/arch/arm64/quick_entrypoints_arm64.S
@@ -1438,7 +1438,7 @@
     /*
      * Called to do a generic JNI down-call
      */
-ENTRY_NO_HIDE art_quick_generic_jni_trampoline
+ENTRY art_quick_generic_jni_trampoline
     SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME_INTERNAL
     str x0, [sp, #0]  // Store native ArtMethod* to bottom of stack.
 
@@ -1534,7 +1534,7 @@
  * x0 = method being called/to bridge to.
  * x1..x7, d0..d7 = arguments to that method.
  */
-ENTRY_NO_HIDE art_quick_to_interpreter_bridge
+ENTRY art_quick_to_interpreter_bridge
     SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME   // Set up frame and save arguments.
 
     //  x0 will contain mirror::ArtMethod* method.