Allow deferred handle dereference in EmitLoadRegister to retrieve number.

src/ppc/lithium-codegen-ppc.cc

Index: src/ppc/lithium-codegen-ppc.cc
diff --git a/src/ppc/lithium-codegen-ppc.cc b/src/ppc/lithium-codegen-ppc.cc
index 8f4cd4637af8e1c61b1be0cecb172b07ade298e0..85438f47b3f799de884c3337568abdeb7d57135e 100644
--- a/src/ppc/lithium-codegen-ppc.cc
+++ b/src/ppc/lithium-codegen-ppc.cc
@@ -417,6 +417,7 @@ Register LCodeGen::EmitLoadRegister(LOperand* op, Register scratch) {
     Handle<Object> literal = constant->handle(isolate());
     Representation r = chunk_->LookupLiteralRepresentation(const_op);
     if (r.IsInteger32()) {
+      AllowDeferredHandleDereference get_number;
       DCHECK(literal->IsNumber());
       __ LoadIntLiteral(scratch, static_cast<int32_t>(literal->Number()));
     } else if (r.IsDouble()) {