[turbofan] Fix unified stack slots for embedded constant pools.

src/compiler/pipeline.cc

Index: src/compiler/pipeline.cc
diff --git a/src/compiler/pipeline.cc b/src/compiler/pipeline.cc
index 978aeee94a8c3ba922a619b697c00477887b4d11..50d14959213381bdd4da5514cac40f75d635a45d 100644
--- a/src/compiler/pipeline.cc
+++ b/src/compiler/pipeline.cc
@@ -266,7 +266,8 @@ class PipelineData {
     int fixed_frame_size = 0;
     if (descriptor != nullptr) {
       fixed_frame_size = (descriptor->kind() == CallDescriptor::kCallAddress)
-                             ? StandardFrameConstants::kFixedSlotCountAboveFp
+                             ? StandardFrameConstants::kFixedSlotCountAboveFp +
+                                   StandardFrameConstants::kCPSlotCount
                              : StandardFrameConstants::kFixedSlotCount;
     }
     frame_ = new (instruction_zone()) Frame(fixed_frame_size);