deps: update V8 to 8.4.371.19

PR-URL: https://github.com/nodejs/node/pull/33579
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Shelley Vohr <codebytere@gmail.com>

1 files changed, 29 insertions, 6 deletions

diff --git a/deps/v8/src/builtins/mips64/builtins-mips64.cc b/deps/v8/src/builtins/mips64/builtins-mips64.cc
index baf2d5bfec..babe084bb0 100644
--- a/deps/v8/src/builtins/mips64/builtins-mips64.cc
+++ b/deps/v8/src/builtins/mips64/builtins-mips64.cc
@@ -930,15 +930,25 @@ static void MaybeOptimizeCode(MacroAssembler* masm, Register feedback_vector,
 
 // Advance the current bytecode offset. This simulates what all bytecode
 // handlers do upon completion of the underlying operation. Will bail out to a
-// label if the bytecode (without prefix) is a return bytecode.
+// label if the bytecode (without prefix) is a return bytecode. Will not advance
+// the bytecode offset if the current bytecode is a JumpLoop, instead just
+// re-executing the JumpLoop to jump to the correct bytecode.
 static void AdvanceBytecodeOffsetOrReturn(MacroAssembler* masm,
                                           Register bytecode_array,
                                           Register bytecode_offset,
                                           Register bytecode, Register scratch1,
-                                          Register scratch2, Label* if_return) {
+                                          Register scratch2, Register scratch3,
+                                          Label* if_return) {
   Register bytecode_size_table = scratch1;
-  DCHECK(!AreAliased(bytecode_array, bytecode_offset, bytecode_size_table,
-                     bytecode));
+
+  // The bytecode offset value will be increased by one in wide and extra wide
+  // cases. In the case of having a wide or extra wide JumpLoop bytecode, we
+  // will restore the original bytecode. In order to simplify the code, we have
+  // a backup of it.
+  Register original_bytecode_offset = scratch3;
+  DCHECK(!AreAliased(bytecode_array, bytecode_offset, bytecode,
+                     bytecode_size_table, original_bytecode_offset));
+  __ Move(original_bytecode_offset, bytecode_offset);
   __ li(bytecode_size_table, ExternalReference::bytecode_size_table_address());
 
   // Check if the bytecode is a Wide or ExtraWide prefix bytecode.
@@ -977,10 +987,23 @@ static void AdvanceBytecodeOffsetOrReturn(MacroAssembler* masm,
   RETURN_BYTECODE_LIST(JUMP_IF_EQUAL)
 #undef JUMP_IF_EQUAL
 
+  // If this is a JumpLoop, re-execute it to perform the jump to the beginning
+  // of the loop.
+  Label end, not_jump_loop;
+  __ Branch(&not_jump_loop, ne, bytecode,
+            Operand(static_cast<int>(interpreter::Bytecode::kJumpLoop)));
+  // We need to restore the original bytecode_offset since we might have
+  // increased it to skip the wide / extra-wide prefix bytecode.
+  __ Move(bytecode_offset, original_bytecode_offset);
+  __ jmp(&end);
+
+  __ bind(&not_jump_loop);
   // Otherwise, load the size of the current bytecode and advance the offset.
   __ Dlsa(scratch2, bytecode_size_table, bytecode, 2);
   __ Lw(scratch2, MemOperand(scratch2));
   __ Daddu(bytecode_offset, bytecode_offset, scratch2);
+
+  __ bind(&end);
 }
 
 // Generate code for entering a JS function with the interpreter.
@@ -1153,7 +1176,7 @@ void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) {
   __ Lbu(a1, MemOperand(a1));
   AdvanceBytecodeOffsetOrReturn(masm, kInterpreterBytecodeArrayRegister,
                                 kInterpreterBytecodeOffsetRegister, a1, a2, a3,
-                                &do_return);
+                                a4, &do_return);
   __ jmp(&do_dispatch);
 
   __ bind(&do_return);
@@ -1430,7 +1453,7 @@ void Builtins::Generate_InterpreterEnterBytecodeAdvance(MacroAssembler* masm) {
   Label if_return;
   AdvanceBytecodeOffsetOrReturn(masm, kInterpreterBytecodeArrayRegister,
                                 kInterpreterBytecodeOffsetRegister, a1, a2, a3,
-                                &if_return);
+                                a4, &if_return);
 
   __ bind(&enter_bytecode);
   // Convert new bytecode offset to a Smi and save in the stackframe.