8293524: RISC-V: Use macro-assembler functions as appropriate

Reviewed-by: fyang
Backport-of: 43e191d64b0094cc1ece61929c32e017ee90c0c8

Author: DingliZhang

src/hotspot/cpu/riscv/c1_LIRAssembler_arraycopy_riscv.cpp

@@ -95,14 +95,14 @@ void LIR_Assembler::arraycopy_simple_check(Register src, Register src_pos, Regis
     if (!(flags & LIR_OpArrayCopy::LIR_OpArrayCopy::dst_objarray)) {
       __ load_klass(tmp, dst);
       __ lw(t0, Address(tmp, in_bytes(Klass::layout_helper_offset())));
-      __ li(t1, Klass::_lh_neutral_value);
+      __ mv(t1, Klass::_lh_neutral_value);
       __ bge(t0, t1, *stub->entry(), /* is_far */ true);
     }
 
     if (!(flags & LIR_OpArrayCopy::LIR_OpArrayCopy::src_objarray)) {
       __ load_klass(tmp, src);
       __ lw(t0, Address(tmp, in_bytes(Klass::layout_helper_offset())));
-      __ li(t1, Klass::_lh_neutral_value);
+      __ mv(t1, Klass::_lh_neutral_value);
       __ bge(t0, t1, *stub->entry(), /* is_far */ true);
     }
   }

src/hotspot/cpu/riscv/c1_LIRAssembler_riscv.cpp

@@ -1089,7 +1089,7 @@ void LIR_Assembler::type_profile_helper(Register mdo, ciMethodData *md, ciProfil
     __ ld(t1, recv_addr);
     __ bnez(t1, next_test);
     __ sd(recv, recv_addr);
-    __ li(t1, DataLayout::counter_increment);
+    __ mv(t1, DataLayout::counter_increment);
     __ sd(t1, Address(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i))));
     __ j(*update_done);
     __ bind(next_test);
@@ -1639,7 +1639,7 @@ void LIR_Assembler::check_conflict(ciKlass* exact_klass, intptr_t current_klass,
 
     if (TypeEntries::is_type_none(current_klass)) {
       __ beqz(t1, none);
-      __ li(t0, (u1)TypeEntries::null_seen);
+      __ mv(t0, (u1)TypeEntries::null_seen);
       __ beq(t0, t1, none);
       // There is a chance that the checks above (re-reading profiling
       // data from memory) fail if another thread has just set the
@@ -1689,7 +1689,7 @@ void LIR_Assembler::check_no_conflict(ciKlass* exact_klass, intptr_t current_kla
     Label ok;
     __ ld(t0, mdo_addr);
     __ beqz(t0, ok);
-    __ li(t1, (u1)TypeEntries::null_seen);
+    __ mv(t1, (u1)TypeEntries::null_seen);
     __ beq(t0, t1, ok);
     // may have been set by another thread
     __ membar(MacroAssembler::LoadLoad);
@@ -2248,7 +2248,7 @@ void LIR_Assembler::store_parameter(jint c, int offset_from_rsp_in_words) {
   assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp");
   int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord;
   assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset");
-  __ li(t0, c);
+  __ mv(t0, c);
   __ sd(t0, Address(sp, offset_from_rsp_in_bytes));
 }
 

src/hotspot/cpu/riscv/c1_MacroAssembler_riscv.cpp

@@ -101,7 +101,7 @@ int C1_MacroAssembler::lock_object(Register hdr, Register obj, Register disp_hdr
   // assuming both the stack pointer and page_size have their least
   // significant 2 bits cleared and page_size is a power of 2
   sub(hdr, hdr, sp);
-  li(t0, aligned_mask - os::vm_page_size());
+  mv(t0, aligned_mask - os::vm_page_size());
   andr(hdr, hdr, t0);
   // for recursive locking, the result is zero => save it in the displaced header
   // location (NULL in the displaced hdr location indicates recursive locking)

src/hotspot/cpu/riscv/c1_Runtime1_riscv.cpp

@@ -974,7 +974,7 @@ OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) {
         __ check_klass_subtype_slow_path(x14, x10, x12, x15, NULL, &miss);
 
         // fallthrough on success:
-        __ li(t0, 1);
+        __ mv(t0, 1);
         __ sd(t0, Address(sp, (result_off) * VMRegImpl::stack_slot_size)); // result
         __ pop_reg(RegSet::of(x10, x12, x14, x15), sp);
         __ ret();
@@ -1164,7 +1164,7 @@ OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) {
     default:
       {
         StubFrame f(sasm, "unimplemented entry", dont_gc_arguments, does_not_return);
-        __ li(x10, (int) id);
+        __ mv(x10, (int)id);
         __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), x10);
         __ should_not_reach_here();
       }

src/hotspot/cpu/riscv/c2_MacroAssembler_riscv.cpp

@@ -815,7 +815,7 @@ void C2_MacroAssembler::string_compare(Register str1, Register str2,
   bind(L);
 
   // A very short string
-  li(t0, minCharsInWord);
+  mv(t0, minCharsInWord);
   ble(cnt2, t0, SHORT_STRING);
 
   // Compare longwords
@@ -826,7 +826,7 @@ void C2_MacroAssembler::string_compare(Register str1, Register str2,
       ld(tmp1, Address(str1));
       beq(str1, str2, DONE);
       ld(tmp2, Address(str2));
-      li(t0, STUB_THRESHOLD);
+      mv(t0, STUB_THRESHOLD);
       bge(cnt2, t0, STUB);
       sub(cnt2, cnt2, minCharsInWord);
       beqz(cnt2, TAIL_CHECK);
@@ -840,7 +840,7 @@ void C2_MacroAssembler::string_compare(Register str1, Register str2,
     } else if (isLU) { // LU case
       lwu(tmp1, Address(str1));
       ld(tmp2, Address(str2));
-      li(t0, STUB_THRESHOLD);
+      mv(t0, STUB_THRESHOLD);
       bge(cnt2, t0, STUB);
       addi(cnt2, cnt2, -4);
       add(str1, str1, cnt2);
@@ -854,7 +854,7 @@ void C2_MacroAssembler::string_compare(Register str1, Register str2,
     } else { // UL case
       ld(tmp1, Address(str1));
       lwu(tmp2, Address(str2));
-      li(t0, STUB_THRESHOLD);
+      mv(t0, STUB_THRESHOLD);
       bge(cnt2, t0, STUB);
       addi(cnt2, cnt2, -4);
       slli(t0, cnt2, 1);
@@ -1030,7 +1030,7 @@ void C2_MacroAssembler::arrays_equals(Register a1, Register a2, Register tmp3,
 
   assert(elem_size == 1 || elem_size == 2, "must be char or byte");
   assert_different_registers(a1, a2, result, cnt1, t0, t1, tmp3, tmp4, tmp5, tmp6);
-  li(elem_per_word, wordSize / elem_size);
+  mv(elem_per_word, wordSize / elem_size);
 
   BLOCK_COMMENT("arrays_equals {");
 

src/hotspot/cpu/riscv/gc/shenandoah/shenandoahBarrierSetAssembler_riscv.cpp

@@ -523,7 +523,7 @@ void ShenandoahBarrierSetAssembler::cmpxchg_oop(MacroAssembler* masm,
   if (is_cae) {
     __ mv(result, expected);
   } else {
-    __ addi(result, zr, 1);
+    __ mv(result, 1);
   }
   __ j(done);
 

src/hotspot/cpu/riscv/interp_masm_riscv.cpp

@@ -527,7 +527,7 @@ void InterpreterMacroAssembler::dispatch_base(TosState state,
     bnez(t1, safepoint);
   }
   if (table == Interpreter::dispatch_table(state)) {
-    li(t1, Interpreter::distance_from_dispatch_table(state));
+    mv(t1, Interpreter::distance_from_dispatch_table(state));
     add(t1, Rs, t1);
     shadd(t1, t1, xdispatch, t1, 3);
   } else {
@@ -835,7 +835,7 @@ void InterpreterMacroAssembler::lock_object(Register lock_reg)
     // least significant 3 bits clear.
     // NOTE: the oopMark is in swap_reg x10 as the result of cmpxchg
     sub(swap_reg, swap_reg, sp);
-    li(t0, (int64_t)(7 - os::vm_page_size()));
+    mv(t0, (int64_t)(7 - os::vm_page_size()));
     andr(swap_reg, swap_reg, t0);
 
     // Save the test result, for recursive case, the result is zero
@@ -1677,7 +1677,7 @@ void InterpreterMacroAssembler::profile_obj_type(Register obj, const Address& md
 
   ld(t0, mdo_addr);
   beqz(t0, none);
-  li(tmp, (u1)TypeEntries::null_seen);
+  mv(tmp, (u1)TypeEntries::null_seen);
   beq(t0, tmp, none);
   // There is a chance that the checks above (re-reading profiling
   // data from memory) fail if another thread has just set the
@@ -1712,10 +1712,10 @@ void InterpreterMacroAssembler::profile_arguments_type(Register mdp, Register ca
 
     lbu(t0, Address(mdp, in_bytes(DataLayout::tag_offset()) - off_to_start));
     if (is_virtual) {
-      li(tmp, (u1)DataLayout::virtual_call_type_data_tag);
+      mv(tmp, (u1)DataLayout::virtual_call_type_data_tag);
       bne(t0, tmp, profile_continue);
     } else {
-      li(tmp, (u1)DataLayout::call_type_data_tag);
+      mv(tmp, (u1)DataLayout::call_type_data_tag);
       bne(t0, tmp, profile_continue);
     }
 
@@ -1745,15 +1745,15 @@ void InterpreterMacroAssembler::profile_arguments_type(Register mdp, Register ca
       mv(index, zr); // index < TypeProfileArgsLimit
       bind(loop);
       bgtz(index, profileReturnType);
-      li(t0, (int)MethodData::profile_return());
+      mv(t0, (int)MethodData::profile_return());
       beqz(t0, profileArgument); // (index > 0 || MethodData::profile_return()) == false
       bind(profileReturnType);
       // If return value type is profiled we may have no argument to profile
       ld(tmp, Address(mdp, in_bytes(TypeEntriesAtCall::cell_count_offset())));
       mv(t1, - TypeStackSlotEntries::per_arg_count());
       mul(t1, index, t1);
       add(tmp, tmp, t1);
-      li(t1, TypeStackSlotEntries::per_arg_count());
+      mv(t1, TypeStackSlotEntries::per_arg_count());
       add(t0, mdp, off_to_args);
       blt(tmp, t1, done);
 
@@ -1764,8 +1764,8 @@ void InterpreterMacroAssembler::profile_arguments_type(Register mdp, Register ca
       // stack offset o (zero based) from the start of the argument
       // list, for n arguments translates into offset n - o - 1 from
       // the end of the argument list
-      li(t0, stack_slot_offset0);
-      li(t1, slot_step);
+      mv(t0, stack_slot_offset0);
+      mv(t1, slot_step);
       mul(t1, index, t1);
       add(t0, t0, t1);
       add(t0, mdp, t0);
@@ -1775,8 +1775,8 @@ void InterpreterMacroAssembler::profile_arguments_type(Register mdp, Register ca
       Address arg_addr = argument_address(tmp);
       ld(tmp, arg_addr);
 
-      li(t0, argument_type_offset0);
-      li(t1, type_step);
+      mv(t0, argument_type_offset0);
+      mv(t1, type_step);
       mul(t1, index, t1);
       add(t0, t0, t1);
       add(mdo_addr, mdp, t0);
@@ -1788,7 +1788,7 @@ void InterpreterMacroAssembler::profile_arguments_type(Register mdp, Register ca
 
       // increment index by 1
       addi(index, index, 1);
-      li(t1, TypeProfileArgsLimit);
+      mv(t1, TypeProfileArgsLimit);
       blt(index, t1, loop);
       bind(loopEnd);
 
@@ -1843,13 +1843,13 @@ void InterpreterMacroAssembler::profile_return_type(Register mdp, Register ret,
       // length
       Label do_profile;
       lbu(t0, Address(xbcp, 0));
-      li(tmp, (u1)Bytecodes::_invokedynamic);
+      mv(tmp, (u1)Bytecodes::_invokedynamic);
       beq(t0, tmp, do_profile);
-      li(tmp, (u1)Bytecodes::_invokehandle);
+      mv(tmp, (u1)Bytecodes::_invokehandle);
       beq(t0, tmp, do_profile);
       get_method(tmp);
       lhu(t0, Address(tmp, Method::intrinsic_id_offset_in_bytes()));
-      li(t1, static_cast<int>(vmIntrinsics::_compiledLambdaForm));
+      mv(t1, static_cast<int>(vmIntrinsics::_compiledLambdaForm));
       bne(t0, t1, profile_continue);
       bind(do_profile);
     }