ART: Remove art_quick_invoke_interface_trampoline

The function has only been used by the IMT conflict resolution
trampoline for a while. Merge the two, which saves a branch.

Change-Id: I2f8c9204adf839ddc5459cc04e70d98f858110a1
diff --git a/runtime/arch/arm/quick_entrypoints_arm.S b/runtime/arch/arm/quick_entrypoints_arm.S
index a7826a7..068f458 100644
--- a/runtime/arch/arm/quick_entrypoints_arm.S
+++ b/runtime/arch/arm/quick_entrypoints_arm.S
@@ -325,23 +325,25 @@
      * On success this wrapper will restore arguments and *jump* to the target, leaving the lr
      * pointing back to the original caller.
      */
-.macro INVOKE_TRAMPOLINE c_name, cxx_name
+.macro INVOKE_TRAMPOLINE_BODY cxx_name
     .extern \cxx_name
-ENTRY \c_name
     SETUP_REFS_AND_ARGS_CALLEE_SAVE_FRAME r2, r3  @ save callee saves in case allocation triggers GC
     mov    r2, r9                         @ pass Thread::Current
     mov    r3, sp
-    bl     \cxx_name                      @ (method_idx, this, caller, Thread*, SP)
+    bl     \cxx_name                      @ (method_idx, this, Thread*, SP)
     mov    r12, r1                        @ save Method*->code_
     RESTORE_REFS_AND_ARGS_CALLEE_SAVE_FRAME
     cbz    r0, 1f                         @ did we find the target? if not go to exception delivery
     bx     r12                            @ tail call to target
 1:
     DELIVER_PENDING_EXCEPTION
+.endm
+.macro INVOKE_TRAMPOLINE c_name, cxx_name
+ENTRY \c_name
+    INVOKE_TRAMPOLINE_BODY \cxx_name
 END \c_name
 .endm
 
-INVOKE_TRAMPOLINE art_quick_invoke_interface_trampoline, artInvokeInterfaceTrampoline
 INVOKE_TRAMPOLINE art_quick_invoke_interface_trampoline_with_access_check, artInvokeInterfaceTrampolineWithAccessCheck
 
 INVOKE_TRAMPOLINE art_quick_invoke_static_trampoline_with_access_check, artInvokeStaticTrampolineWithAccessCheck
@@ -894,7 +896,7 @@
      */
 ENTRY art_quick_imt_conflict_trampoline
     mov    r0, r12
-    b art_quick_invoke_interface_trampoline
+    INVOKE_TRAMPOLINE_BODY artInvokeInterfaceTrampoline
 END art_quick_imt_conflict_trampoline
 
     .extern artQuickResolutionTrampoline