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src/hotspot/cpu/riscv/macroAssembler_riscv.cpp

@@ -27,6 +27,7 @@
 #include "precompiled.hpp"
 #include "asm/assembler.hpp"
 #include "asm/assembler.inline.hpp"
+#include "code/compiledIC.hpp"
 #include "compiler/disassembler.hpp"
 #include "gc/shared/barrierSet.hpp"
 #include "gc/shared/barrierSetAssembler.hpp"
@@ -3310,14 +3311,54 @@ address MacroAssembler::trampoline_call(Address entry) {
   return call_pc;
 }
 
+uintptr_t MacroAssembler::create_ic_data() {
+#ifdef COMPILER2
+  if (code_section()->scratch_emit()) {
+    return (uintptr_t)Universe::non_oop_word();
+  }
+#endif
+  return (uintptr_t)new CompiledICData();
+}
+
 address MacroAssembler::ic_call(address entry, jint method_index) {
   RelocationHolder rh = virtual_call_Relocation::spec(pc(), method_index);
   IncompressibleRegion ir(this);  // relocations
-  movptr(t1, (address)Universe::non_oop_word());
+  movptr(t1, create_ic_data());
   assert_cond(entry != nullptr);
   return trampoline_call(Address(entry, rh));
 }
 
+int MacroAssembler::ic_check_size() {
+  return NativeInstruction::instruction_size * 9;
+}
+
+int MacroAssembler::ic_check(int end_alignment) {
+  IncompressibleRegion ir(this);  // relocations
+  Register receiver = j_rarg0;
+  Register data = t1;
+  Register tmp = t0;
+
+  align(end_alignment, offset() + ic_check_size());
+
+  int uep_offset = offset();
+
+  if (UseCompressedClassPointers) {
+    lw(tmp,  Address(receiver, oopDesc::klass_offset_in_bytes()));
+    lw(data, Address(data, CompiledICData::speculated_klass_offset()));
+  } else {
+    ld(tmp,  Address(receiver, oopDesc::klass_offset_in_bytes()));
+    ld(data, Address(data, CompiledICData::speculated_klass_offset()));
+  }
+
+  Label dont;
+  beq(data, tmp, dont);
+  far_jump(RuntimeAddress(SharedRuntime::get_ic_miss_stub()));
+  bind(dont);
+  assert((offset() % end_alignment) == 0, "Misaligned verified entry point");
+
+  return uep_offset;
+}
+
 // Emit a trampoline stub for a call to a target which is too far away.
 //
 // code sequences:

src/hotspot/cpu/riscv/macroAssembler_riscv.hpp

@@ -1169,7 +1169,11 @@ class MacroAssembler: public Assembler {
   //
   // Return: the call PC or null if CodeCache is full.
   address trampoline_call(Address entry);
+
+  uintptr_t create_ic_data();
   address ic_call(address entry, jint method_index = 0);
+  static int ic_check_size();
+  int ic_check(int end_alignment);
 
   // Support for memory inc/dec
   // n.b. increment/decrement calls with an Address destination will

src/hotspot/cpu/riscv/riscv.ad

@@ -1824,12 +1824,8 @@ void MachUEPNode::emit(CodeBuffer& cbuf, PhaseRegAlloc* ra_) const
 {
   // This is the unverified entry point.
   C2_MacroAssembler _masm(&cbuf);
-
-  Label skip;
-  __ cmp_klass(j_rarg0, t1, t0, t2 /* call-clobbered t2 as a tmp */, skip);
-  __ far_jump(RuntimeAddress(SharedRuntime::get_ic_miss_stub()));
-  __ bind(skip);
-
+  __ ic_check(CodeEntryAlignment);
+
   // These NOPs are critical so that verified entry point is properly
   // 4 bytes aligned for patching by NativeJump::patch_verified_entry()
   __ align(NativeInstruction::instruction_size);

src/hotspot/cpu/riscv/sharedRuntime_riscv.cpp

@@ -638,11 +638,9 @@ AdapterHandlerEntry* SharedRuntime::generate_i2c2i_adapters(MacroAssembler *masm
 
   {
     __ block_comment("c2i_unverified_entry {");
-    __ load_klass(t0, receiver, tmp);
-    __ ld(tmp, Address(holder, CompiledICHolder::holder_klass_offset()));
-    __ ld(xmethod, Address(holder, CompiledICHolder::holder_metadata_offset()));
-    __ beq(t0, tmp, ok);
-    __ far_jump(RuntimeAddress(SharedRuntime::get_ic_miss_stub()));
+
+    __ ic_check(1 /* end_alignment */);
+    __ ld(xmethod, Address(holder, CompiledICData::speculated_method_offset()));
 
     __ bind(ok);
     // Method might have been compiled since the call site was patched to
@@ -1423,19 +1421,10 @@ nmethod* SharedRuntime::generate_native_wrapper(MacroAssembler* masm,
   const Register ic_reg = t1;
   const Register receiver = j_rarg0;
 
-  Label hit;
-  Label exception_pending;
-
   __ verify_oop(receiver);
-  assert_different_registers(ic_reg, receiver, t0, t2);
-  __ cmp_klass(receiver, ic_reg, t0, t2 /* call-clobbered t2 as a tmp */, hit);
+  assert_different_registers(receiver, t0, t1);
 
-  __ far_jump(RuntimeAddress(SharedRuntime::get_ic_miss_stub()));
-
-  // Verified entry point must be aligned
-  __ align(8);
-
-  __ bind(hit);
+  __ ic_check(8 /* end_alignment */);
 
   int vep_offset = ((intptr_t)__ pc()) - start;
 
@@ -1870,6 +1859,7 @@ nmethod* SharedRuntime::generate_native_wrapper(MacroAssembler* masm,
   __ leave();
 
   // Any exception pending?
+  Label exception_pending;
   __ ld(t0, Address(xthread, in_bytes(Thread::pending_exception_offset())));
   __ bnez(t0, exception_pending);
 

src/hotspot/cpu/riscv/vtableStubs_riscv.cpp

@@ -27,6 +27,7 @@
 #include "precompiled.hpp"
 #include "asm/assembler.inline.hpp"
 #include "asm/macroAssembler.inline.hpp"
+#include "code/compiledIC.hpp"
 #include "code/vtableStubs.hpp"
 #include "interp_masm_riscv.hpp"
 #include "memory/resourceArea.hpp"
@@ -184,8 +185,8 @@ VtableStub* VtableStubs::create_itable_stub(int itable_index) {
 
   Label L_no_such_interface;
 
-  __ ld(resolved_klass_reg, Address(icholder_reg, CompiledICHolder::holder_klass_offset()));
-  __ ld(holder_klass_reg,   Address(icholder_reg, CompiledICHolder::holder_metadata_offset()));
+  __ ld(resolved_klass_reg, Address(icholder_reg, CompiledICData::itable_refc_klass_offset()));
+  __ ld(holder_klass_reg,   Address(icholder_reg, CompiledICData::itable_defc_klass_offset()));
 
   start_pc = __ pc();