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

src/ppc/macro-assembler-ppc.cc

Index: src/ppc/macro-assembler-ppc.cc
diff --git a/src/ppc/macro-assembler-ppc.cc b/src/ppc/macro-assembler-ppc.cc
index 88ca14977a585ff3921400967c8333494f5dfbbe..17473479fad76612902759e9a0ea3b8d7434b1c1 100644
--- a/src/ppc/macro-assembler-ppc.cc
+++ b/src/ppc/macro-assembler-ppc.cc
@@ -1085,12 +1085,20 @@ void MacroAssembler::InvokePrologue(const ParameterCount& expected,
 }
 
 
-void MacroAssembler::InvokeCode(Register code, const ParameterCount& expected,
+void MacroAssembler::InvokeCode(Register code, Register new_target,
+                                const ParameterCount& expected,
                                 const ParameterCount& actual, InvokeFlag flag,
                                 const CallWrapper& call_wrapper) {
   // You can't call a function without a valid frame.
   DCHECK(flag == JUMP_FUNCTION || has_frame());
 
+  // 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(r6));
+  if (!new_target.is_valid()) {
+    LoadRoot(r6, Heap::kUndefinedValueRootIndex);
+  }
+
   Label done;
   bool definitely_mismatches = false;
   InvokePrologue(expected, actual, &done, &definitely_mismatches, flag,
@@ -1112,7 +1120,8 @@ void MacroAssembler::InvokeCode(Register code, const ParameterCount& expected,
 }
 
 
-void MacroAssembler::InvokeFunction(Register fun, const ParameterCount& actual,
+void MacroAssembler::InvokeFunction(Register fun, Register new_target,
+                                    const ParameterCount& actual,
                                     InvokeFlag flag,
                                     const CallWrapper& call_wrapper) {
   // You can't call a function without a valid frame.
@@ -1135,7 +1144,7 @@ void MacroAssembler::InvokeFunction(Register fun, const ParameterCount& actual,
   LoadP(code_reg, FieldMemOperand(r4, JSFunction::kCodeEntryOffset));
 
   ParameterCount expected(expected_reg);
-  InvokeCode(code_reg, expected, actual, flag, call_wrapper);
+  InvokeCode(code_reg, new_target, expected, actual, flag, call_wrapper);
 }
 
 
@@ -1157,7 +1166,7 @@ void MacroAssembler::InvokeFunction(Register function,
   // allow recompilation to take effect without changing any of the
   // call sites.
   LoadP(ip, FieldMemOperand(r4, JSFunction::kCodeEntryOffset));
-  InvokeCode(ip, expected, actual, flag, call_wrapper);
+  InvokeCode(ip, no_reg, expected, actual, flag, call_wrapper);
 }