Bailout for large object allocations in full code EmitFastOneByteArrayJoin.

src/full-codegen/ppc/full-codegen-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.
 
 #if V8_TARGET_ARCH_PPC
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
 #include "src/debug/debug.h"
@@ skipping 4243 matching lines @@
   __ bne(&bailout);
   __ cmpwi(scratch2, Operand::Zero());
   __ blt(&bailout);
 #endif
 
   __ AddAndCheckForOverflow(string_length, string_length, scratch2, scratch1,
                             r0);
   __ BranchOnOverflow(&bailout);
   __ SmiUntag(string_length);
 
+  // Bailout for large object allocations.
+  __ cmpi(string_length, Operand(Page::kMaxRegularHeapObjectSize));
+  __ bgt(&bailout);
+
   // Get first element in the array to free up the elements register to be used
   // for the result.
   __ addi(element, elements, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
   result = elements;  // End of live range for elements.
   elements = no_reg;
   // Live values in registers:
   //   element: First array element
   //   separator: Separator string
   //   string_length: Length of result string (not smi)
   //   array_length: Length of the array.
@@ skipping 952 matching lines @@
     return ON_STACK_REPLACEMENT;
   }
 
   DCHECK(interrupt_address ==
          isolate->builtins()->OsrAfterStackCheck()->entry());
   return OSR_AFTER_STACK_CHECK;
 }
 }  // namespace internal
 }  // namespace v8
 #endif  // V8_TARGET_ARCH_PPC