[turbofan] Run everything after representation selection concurrently.

src/interface-descriptors.h

Index: src/interface-descriptors.h
diff --git a/src/interface-descriptors.h b/src/interface-descriptors.h
index fe9c0d6c035db535d21718844c9b01d7be6fbb68..ecb62b88c7048958ff1da0bd02e91e140d96f485 100644
--- a/src/interface-descriptors.h
+++ b/src/interface-descriptors.h
@@ -58,7 +58,6 @@ class PlatformInterfaceDescriptor;
   V(AllocateInt8x16)                          \
   V(AllocateUint8x16)                         \
   V(AllocateBool8x16)                         \
-  V(Allocate)                                 \
   V(ArrayConstructorConstantArgCount)         \
   V(ArrayConstructor)                         \
   V(InternalArrayConstructorConstantArgCount) \
@@ -578,11 +577,6 @@ class AllocateMutableHeapNumberDescriptor : public CallInterfaceDescriptor {
                      CallInterfaceDescriptor)
 };
 
-class AllocateDescriptor : public CallInterfaceDescriptor {
- public:
-  DECLARE_DESCRIPTOR(AllocateDescriptor, CallInterfaceDescriptor)
-};
-
 
 class ArrayConstructorConstantArgCountDescriptor
     : public CallInterfaceDescriptor {