PPC: [builtins] Make Math.max and Math.min fast by default.

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 165 matching lines @@
   DCHECK_EQ(expected_size, SizeOfCodeGeneratedSince(&start));
 }
 
 
 void MacroAssembler::Drop(int count) {
   if (count > 0) {
     Add(sp, sp, count * kPointerSize, r0);
   }
 }
 
+void MacroAssembler::Drop(Register count, Register scratch) {
+  ShiftLeftImm(scratch, count, Operand(kPointerSizeLog2));
+  add(sp, sp, scratch);
+}
 
 void MacroAssembler::Call(Label* target) { b(target, SetLK); }
 
 
 void MacroAssembler::Push(Handle<Object> handle) {
   mov(r0, Operand(handle));
   push(r0);
 }
 
 
@@ skipping 4130 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