PPC: [turbofan] Introduce DeoptimizeIf And DeoptimizeUnless common operators.

src/compiler/ppc/code-generator-ppc.cc

Index: src/compiler/ppc/code-generator-ppc.cc
diff --git a/src/compiler/ppc/code-generator-ppc.cc b/src/compiler/ppc/code-generator-ppc.cc
index 7fc6dd9d077688686cc31807749bd2624116ee28..6bf0a7e80a75a59c7f1e0a0d618c6411a707c7d7 100644
--- a/src/compiler/ppc/code-generator-ppc.cc
+++ b/src/compiler/ppc/code-generator-ppc.cc
@@ -32,6 +32,7 @@ class PPCOperandConverter final : public InstructionOperandConverter {
   RCBit OutputRCBit() const {
     switch (instr_->flags_mode()) {
       case kFlags_branch:
+      case kFlags_deoptimize:
       case kFlags_set:
         return SetRC;
       case kFlags_none:
@@ -1589,6 +1590,9 @@ void CodeGenerator::AssembleDeoptimizerCall(
     int deoptimization_id, Deoptimizer::BailoutType bailout_type) {
   Address deopt_entry = Deoptimizer::GetDeoptimizationEntry(
       isolate(), deoptimization_id, bailout_type);
+  // TODO(turbofan): We should be able to generate better code by sharing the
+  // actual final call site and just bl'ing to it here, similar to what we do
+  // in the lithium backend.
   __ Call(deopt_entry, RelocInfo::RUNTIME_ENTRY);
 }