PPC: Support for conditional return instruction.

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.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_PPC
@@ skipping 158 matching lines @@
   if (rmode == RelocInfo::CODE_TARGET && !ast_id.IsNone()) {
     SetRecordedAstId(ast_id);
     rmode = RelocInfo::CODE_TARGET_WITH_ID;
   }
   AllowDeferredHandleDereference using_raw_address;
   Call(reinterpret_cast<Address>(code.location()), rmode, cond);
   DCHECK_EQ(expected_size, SizeOfCodeGeneratedSince(&start));
 }
 
 
-void MacroAssembler::Ret(Condition cond) {
-  DCHECK(cond == al);
-  blr();
-}
-
-
-void MacroAssembler::Drop(int count, Condition cond) {
-  DCHECK(cond == al);
+void MacroAssembler::Drop(int count) {
   if (count > 0) {
     Add(sp, sp, count * kPointerSize, r0);
   }
 }
 
 
-void MacroAssembler::Ret(int drop, Condition cond) {
-  Drop(drop, cond);
-  Ret(cond);
-}
-
-
 void MacroAssembler::Call(Label* target) { b(target, SetLK); }
 
 
 void MacroAssembler::Push(Handle<Object> handle) {
   mov(r0, Operand(handle));
   push(r0);
 }
 
 
 void MacroAssembler::Move(Register dst, Handle<Object> value) {
@@ skipping 281 matching lines @@
   StoreP(scratch, MemOperand(ip));
   // Call stub on end of buffer.
   // Check for end of buffer.
   mov(r0, Operand(StoreBuffer::kStoreBufferOverflowBit));
   and_(r0, scratch, r0, SetRC);
 
   if (and_then == kFallThroughAtEnd) {
     beq(&done, cr0);
   } else {
     DCHECK(and_then == kReturnAtEnd);
-    beq(&done, cr0);
+    Ret(eq, cr0);
   }
   mflr(r0);
   push(r0);
   StoreBufferOverflowStub store_buffer_overflow(isolate(), fp_mode);
   CallStub(&store_buffer_overflow);
   pop(r0);
   mtlr(r0);
   bind(&done);
   if (and_then == kReturnAtEnd) {
     Ret();
@@ skipping 4144 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