[turbofan] Switch passing of new.target to register.

src/arm64/macro-assembler-arm64.cc

Index: src/arm64/macro-assembler-arm64.cc
diff --git a/src/arm64/macro-assembler-arm64.cc b/src/arm64/macro-assembler-arm64.cc
index 0bd28aa8b38d739ce8aa2323dca4af3f1bfa381a..86efc4d5df74950faaa751a886c826aa5e855964 100644
--- a/src/arm64/macro-assembler-arm64.cc
+++ b/src/arm64/macro-assembler-arm64.cc
@@ -2551,6 +2551,7 @@ void MacroAssembler::InvokePrologue(const ParameterCount& expected,
 
 
 void MacroAssembler::InvokeCode(Register code,
+                                Register new_target,
                                 const ParameterCount& expected,
                                 const ParameterCount& actual,
                                 InvokeFlag flag,
@@ -2558,8 +2559,14 @@ void MacroAssembler::InvokeCode(Register code,
   // You can't call a function without a valid frame.
   DCHECK(flag == JUMP_FUNCTION || has_frame());
 
-  Label done;
+  // Ensure new target is passed in the correct register. Otherwise clear the
+  // appropriate register in case new target is not given.
+  DCHECK_IMPLIES(new_target.is_valid(), new_target.is(x3));
+  if (!new_target.is_valid()) {
+    LoadRoot(x3, Heap::kUndefinedValueRootIndex);
+  }
 
+  Label done;
   bool definitely_mismatches = false;
   InvokePrologue(expected, actual, &done, flag, &definitely_mismatches,
                  call_wrapper);
@@ -2585,6 +2592,7 @@ void MacroAssembler::InvokeCode(Register code,
 
 
 void MacroAssembler::InvokeFunction(Register function,
+                                    Register new_target,
                                     const ParameterCount& actual,
                                     InvokeFlag flag,
                                     const CallWrapper& call_wrapper) {
@@ -2596,7 +2604,7 @@ void MacroAssembler::InvokeFunction(Register function,
   DCHECK(function.is(x1));
 
   Register expected_reg = x2;
-  Register code_reg = x3;
+  Register code_reg = x4;
 
   Ldr(cp, FieldMemOperand(function, JSFunction::kContextOffset));
   // The number of arguments is stored as an int32_t, and -1 is a marker
@@ -2611,7 +2619,7 @@ void MacroAssembler::InvokeFunction(Register function,
       FieldMemOperand(function, JSFunction::kCodeEntryOffset));
 
   ParameterCount expected(expected_reg);
-  InvokeCode(code_reg, expected, actual, flag, call_wrapper);
+  InvokeCode(code_reg, new_target, expected, actual, flag, call_wrapper);
 }
 
 
@@ -2627,7 +2635,7 @@ void MacroAssembler::InvokeFunction(Register function,
   // (See FullCodeGenerator::Generate().)
   DCHECK(function.Is(x1));
 
-  Register code_reg = x3;
+  Register code_reg = x4;
 
   // Set up the context.
   Ldr(cp, FieldMemOperand(function, JSFunction::kContextOffset));
@@ -2636,7 +2644,7 @@ void MacroAssembler::InvokeFunction(Register function,
   // allow recompilation to take effect without changing any of the
   // call sites.
   Ldr(code_reg, FieldMemOperand(function, JSFunction::kCodeEntryOffset));
-  InvokeCode(code_reg, expected, actual, flag, call_wrapper);
+  InvokeCode(code_reg, no_reg, expected, actual, flag, call_wrapper);
 }