src/hotspot/cpu/aarch64/gc/shenandoah/shenandoahBarrierSetAssembler_aarch64.cpp

rev 59363 : 8244729: Shenandoah: remove resolve paths from SBSA::generate_shenandoah_lrb
Reviewed-by: XXX

*** 681,707 ****
  
    __ align(6);
    StubCodeMark mark(cgen, "StubRoutines", "shenandoah_lrb");
    address start = __ pc();
  
!   Label work, done;
    __ mov(rscratch2, ShenandoahHeap::in_cset_fast_test_addr());
    __ lsr(rscratch1, r0, ShenandoahHeapRegion::region_size_bytes_shift_jint());
    __ ldrb(rscratch2, Address(rscratch2, rscratch1));
!   __ tbnz(rscratch2, 0, work);
!   __ ret(lr);
!   __ bind(work);
! 
!   Label slow_path;
!   __ ldr(rscratch1, Address(r0, oopDesc::mark_offset_in_bytes()));
!   __ eon(rscratch1, rscratch1, zr);
!   __ ands(zr, rscratch1, markWord::lock_mask_in_place);
!   __ br(Assembler::NE, slow_path);
! 
!   // Decode forwarded object.
!   __ orr(rscratch1, rscratch1, markWord::marked_value);
!   __ eon(r0, rscratch1, zr);
    __ ret(lr);
  
    __ bind(slow_path);
    __ enter(); // required for proper stackwalking of RuntimeStub frame
  
--- 681,695 ----
  
    __ align(6);
    StubCodeMark mark(cgen, "StubRoutines", "shenandoah_lrb");
    address start = __ pc();
  
!   Label slow_path;
    __ mov(rscratch2, ShenandoahHeap::in_cset_fast_test_addr());
    __ lsr(rscratch1, r0, ShenandoahHeapRegion::region_size_bytes_shift_jint());
    __ ldrb(rscratch2, Address(rscratch2, rscratch1));
!   __ tbnz(rscratch2, 0, slow_path);
    __ ret(lr);
  
    __ bind(slow_path);
    __ enter(); // required for proper stackwalking of RuntimeStub frame
  
*** 716,726 ****
    __ mov(rscratch1, r0);
    __ pop_call_clobbered_registers();
    __ mov(r0, rscratch1);
  
    __ leave(); // required for proper stackwalking of RuntimeStub frame
-   __ bind(done);
    __ ret(lr);
  
    return start;
  }
  
--- 704,713 ----