[strong] Remove all remainders of strong mode

src/s390/builtins-s390.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_S390
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 2462 matching lines @@
     __ CmpP(r2, r6);  // Compare before moving to next argument.
     __ lay(r2, MemOperand(r2, -kPointerSize));
     __ bne(&copy);
 
     __ b(&invoke);
   }
 
   {  // Too few parameters: Actual < expected
     __ bind(&too_few);
 
-    // If the function is strong we need to throw an error.
-    Label no_strong_error;
-    __ LoadP(r6, FieldMemOperand(r3, JSFunction::kSharedFunctionInfoOffset));
-    __ LoadlW(r7,
-              FieldMemOperand(r6, SharedFunctionInfo::kCompilerHintsOffset));
-    __ TestBit(r7, SharedFunctionInfo::kStrongModeBit, r0);
-    __ beq(&no_strong_error);
-
-    // What we really care about is the required number of arguments.
-    __ LoadlW(r6, FieldMemOperand(r6, SharedFunctionInfo::kLengthOffset));
-#if V8_TARGET_ARCH_S390X
-    // See commment near kLenghtOffset in src/objects.h
-    __ ShiftRightArith(r6, r6, Operand(kSmiTagSize));
-#else
-    __ SmiUntag(r6);
-#endif
-    __ CmpP(r2, r6);
-    __ bge(&no_strong_error);
-
-    {
-      FrameScope frame(masm, StackFrame::MANUAL);
-      EnterArgumentsAdaptorFrame(masm);
-      __ CallRuntime(Runtime::kThrowStrongModeTooFewArguments);
-    }
-
-    __ bind(&no_strong_error);
     EnterArgumentsAdaptorFrame(masm);
     ArgumentAdaptorStackCheck(masm, &stack_overflow);
 
     // Calculate copy start address into r0 and copy end address is fp.
     // r2: actual number of arguments as a smi
     // r3: function
     // r4: expected number of arguments
     // r5: new target (passed through to callee)
     // ip: code entry to call
     __ SmiToPtrArrayOffset(r2, r2);
@@ skipping 60 matching lines @@
     __ bkpt(0);
   }
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_S390