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

src/ppc/macro-assembler-ppc.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.
 
 #include <assert.h>  // For assert
 #include <limits.h>  // For LONG_MIN, LONG_MAX.
 
 #if V8_TARGET_ARCH_PPC
 
 #include "src/base/bits.h"
@@ skipping 1067 matching lines @@
         b(done);
       }
     } else {
       Jump(adaptor, RelocInfo::CODE_TARGET);
     }
     bind(&regular_invoke);
   }
 }
 
 
-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,
                  call_wrapper);
   if (!definitely_mismatches) {
     if (flag == CALL_FUNCTION) {
       call_wrapper.BeforeCall(CallSize(code));
       CallJSEntry(code);
       call_wrapper.AfterCall();
     } else {
       DCHECK(flag == JUMP_FUNCTION);
       JumpToJSEntry(code);
     }
 
     // Continue here if InvokePrologue does handle the invocation due to
     // mismatched parameter counts.
     bind(&done);
   }
 }
 
 
-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.
   DCHECK(flag == JUMP_FUNCTION || has_frame());
 
   // Contract with called JS functions requires that function is passed in r4.
   DCHECK(fun.is(r4));
 
   Register expected_reg = r5;
   Register code_reg = ip;
 
   LoadP(code_reg, FieldMemOperand(r4, JSFunction::kSharedFunctionInfoOffset));
   LoadP(cp, FieldMemOperand(r4, JSFunction::kContextOffset));
   LoadWordArith(expected_reg,
                 FieldMemOperand(
                     code_reg, SharedFunctionInfo::kFormalParameterCountOffset));
 #if !defined(V8_TARGET_ARCH_PPC64)
   SmiUntag(expected_reg);
 #endif
   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);
 }
 
 
 void MacroAssembler::InvokeFunction(Register function,
                                     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());
 
   // Contract with called JS functions requires that function is passed in r4.
   DCHECK(function.is(r4));
 
   // Get the function and setup the context.
   LoadP(cp, FieldMemOperand(r4, JSFunction::kContextOffset));
 
   // We call indirectly through the code field in the function to
   // 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);
 }
 
 
 void MacroAssembler::InvokeFunction(Handle<JSFunction> function,
                                     const ParameterCount& expected,
                                     const ParameterCount& actual,
                                     InvokeFlag flag,
                                     const CallWrapper& call_wrapper) {
   Move(r4, function);
   InvokeFunction(r4, expected, actual, flag, call_wrapper);
@@ skipping 3257 matching lines @@
   }
   if (mag.shift > 0) srawi(result, result, mag.shift);
   ExtractBit(r0, dividend, 31);
   add(result, result, r0);
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_PPC