add a option to disable signal checking

this is nice for making the generated LLVM IR and bjit code simpler when debugging code

src/codegen/ast_interpreter.cpp

@@ -1793,8 +1793,10 @@ Box* ASTInterpreterJitInterface::landingpadHelper(void* _interpreter) {
 }
 
 void ASTInterpreterJitInterface::pendingCallsCheckHelper() {
+#if ENABLE_SIGNAL_CHECKING
     if (unlikely(_pendingcalls_to_do))
         makePendingCalls();
+#endif
 }
 
 void ASTInterpreterJitInterface::setExcInfoHelper(void* _interpreter, Box* type, Box* value, Box* traceback) {

src/codegen/baseline_jit.cpp

@@ -506,7 +506,9 @@ void JitFragmentWriter::emitOSRPoint(AST_Jump* node) {
 }
 
 void JitFragmentWriter::emitPendingCallsCheck() {
+#if ENABLE_SIGNAL_CHECKING
     call(false, (void*)ASTInterpreterJitInterface::pendingCallsCheckHelper);
+#endif
 }
 
 void JitFragmentWriter::emitPrint(RewriterVar* dest, RewriterVar* var, bool nl) {

src/codegen/irgen/irgenerator.cpp

@@ -364,6 +364,7 @@ private:
     IRGenerator* irgenerator;
 
     void emitPendingCallsCheck(llvm::BasicBlock* exc_dest) {
+#if ENABLE_SIGNAL_CHECKING
         auto&& builder = *getBuilder();
 
         llvm::GlobalVariable* pendingcalls_to_do_gv = g.cur_module->getGlobalVariable("_pendingcalls_to_do");
@@ -405,6 +406,7 @@ private:
 
         cur_block = join_block;
         setCurrentBasicBlock(join_block);
+#endif
     }
 
     void checkAndPropagateCapiException(const UnwindInfo& unw_info, llvm::Value* returned_val, llvm::Value* exc_val,

src/core/options.h

@@ -51,6 +51,7 @@ extern bool ENABLE_ICS, ENABLE_ICGENERICS, ENABLE_ICGETITEMS, ENABLE_ICSETITEMS,
 #define BOOLS_AS_I64 1
 
 #define ENABLE_SAMPLING_PROFILER 0
+#define ENABLE_SIGNAL_CHECKING 1
 }
 }