PPC: [builtins] Remove the weird STACK_OVERFLOW builtin.

Port 39604dda

Original commit message:
    Just use a %ThrowStackOverflow runtime function instead, which
    does the trick, especially since the Isolate already has a
    preallocated StackOverflow error for that.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, dstence@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1334303002

Cr-Commit-Position: refs/heads/master@{#30697}

src/full-codegen/ppc/full-codegen-ppc.cc

@@ -160,7 +160,7 @@ void FullCodeGenerator::Generate() {
         __ LoadRoot(r5, Heap::kRealStackLimitRootIndex);
         __ cmpl(ip, r5);
         __ bc_short(ge, &ok);
-        __ InvokeBuiltin(Context::STACK_OVERFLOW_BUILTIN_INDEX, CALL_FUNCTION);
+        __ CallRuntime(Runtime::kThrowStackOverflow, 0);
         __ bind(&ok);
       }
       __ LoadRoot(ip, Heap::kUndefinedValueRootIndex);

src/ppc/builtins-ppc.cc

@@ -759,7 +759,7 @@ static void Generate_CheckStackOverflow(MacroAssembler* masm,
     __ SmiTag(argc);
   }
   __ Push(r4, argc);
-  __ InvokeBuiltin(Context::STACK_OVERFLOW_BUILTIN_INDEX, CALL_FUNCTION);
+  __ CallRuntime(Runtime::kThrowStackOverflow, 0);
 
   __ bind(&okay);
 }
@@ -908,7 +908,7 @@ void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) {
     __ LoadRoot(r0, Heap::kRealStackLimitRootIndex);
     __ cmpl(r6, r0);
     __ bge(&ok);
-    __ InvokeBuiltin(Context::STACK_OVERFLOW_BUILTIN_INDEX, CALL_FUNCTION);
+    __ CallRuntime(Runtime::kThrowStackOverflow, 0);
     __ bind(&ok);
 
     // If ok, push undefined as the initial value for all register file entries.
@@ -1826,7 +1826,7 @@ void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) {
   {
     FrameScope frame(masm, StackFrame::MANUAL);
     EnterArgumentsAdaptorFrame(masm);
-    __ InvokeBuiltin(Context::STACK_OVERFLOW_BUILTIN_INDEX, CALL_FUNCTION);
+    __ CallRuntime(Runtime::kThrowStackOverflow, 0);
     __ bkpt(0);
   }
 }