diff --git a/flang/lib/Lower/Allocatable.cpp b/flang/lib/Lower/Allocatable.cpp
--- a/flang/lib/Lower/Allocatable.cpp
+++ b/flang/lib/Lower/Allocatable.cpp
@@ -146,8 +146,8 @@
       box.isPointer()
           ? fir::runtime::getRuntimeFunc<mkRTKey(PointerNullifyCharacter)>(
                 loc, builder)
-          : fir::runtime::getRuntimeFunc<mkRTKey(AllocatableInitCharacter)>(
-                loc, builder);
+          : fir::runtime::getRuntimeFunc<mkRTKey(
+                AllocatableInitCharacterForAllocate)>(loc, builder);
   llvm::ArrayRef<mlir::Type> inputTypes = callee.getFunctionType().getInputs();
   if (inputTypes.size() != 5)
     fir::emitFatalError(
@@ -592,8 +592,8 @@
         box.isPointer()
             ? fir::runtime::getRuntimeFunc<mkRTKey(PointerNullifyDerived)>(
                   loc, builder)
-            : fir::runtime::getRuntimeFunc<mkRTKey(AllocatableInitDerived)>(
-                  loc, builder);
+            : fir::runtime::getRuntimeFunc<mkRTKey(
+                  AllocatableInitDerivedForAllocate)>(loc, builder);
 
     llvm::ArrayRef<mlir::Type> inputTypes =
         callee.getFunctionType().getInputs();
@@ -619,8 +619,8 @@
         box.isPointer()
             ? fir::runtime::getRuntimeFunc<mkRTKey(PointerNullifyIntrinsic)>(
                   loc, builder)
-            : fir::runtime::getRuntimeFunc<mkRTKey(AllocatableInitIntrinsic)>(
-                  loc, builder);
+            : fir::runtime::getRuntimeFunc<mkRTKey(
+                  AllocatableInitIntrinsicForAllocate)>(loc, builder);
 
     llvm::ArrayRef<mlir::Type> inputTypes =
         callee.getFunctionType().getInputs();
diff --git a/flang/test/Lower/allocatable-polymorphic.f90 b/flang/test/Lower/allocatable-polymorphic.f90
--- a/flang/test/Lower/allocatable-polymorphic.f90
+++ b/flang/test/Lower/allocatable-polymorphic.f90
@@ -258,7 +258,7 @@
 ! CHECK: %[[TYPE_DESC_P1_CAST:.*]] = fir.convert %[[TYPE_DESC_P1]] : (!fir.tdesc<!fir.type<_QMpolyTp1{a:i32,b:i32}>>) -> !fir.ref<none>
 ! CHECK: %[[RANK:.*]] = arith.constant 0 : i32
 ! CHECK: %[[C0:.*]] = arith.constant 0 : i32
-! CHECK: fir.call @_FortranAAllocatableInitDerived(%[[P_CAST]], %[[TYPE_DESC_P1_CAST]], %[[RANK]], %[[C0]]) {{.*}}: (!fir.ref<!fir.box<none>>, !fir.ref<none>, i32, i32) -> none
+! CHECK: fir.call @_FortranAAllocatableInitDerivedForAllocate(%[[P_CAST]], %[[TYPE_DESC_P1_CAST]], %[[RANK]], %[[C0]]) {{.*}}: (!fir.ref<!fir.box<none>>, !fir.ref<none>, i32, i32) -> none
 ! CHECK: %[[P_CAST:.*]] = fir.convert %[[P]] : (!fir.ref<!fir.class<!fir.heap<!fir.type<_QMpolyTp1{a:i32,b:i32}>>>>) -> !fir.ref<!fir.box<none>>
 ! CHECK: %{{.*}} = fir.call @_FortranAAllocatableAllocate(%[[P_CAST]], %{{.*}}, %{{.*}}, %{{.*}}, %{{.*}}) {{.*}}: (!fir.ref<!fir.box<none>>, i1, !fir.box<none>, !fir.ref<i8>, i32) -> i32
 
@@ -267,7 +267,7 @@
 ! CHECK: %[[TYPE_DESC_P1_CAST:.*]] = fir.convert %[[TYPE_DESC_P1]] : (!fir.tdesc<!fir.type<_QMpolyTp1{a:i32,b:i32}>>) -> !fir.ref<none>
 ! CHECK: %[[RANK:.*]] = arith.constant 0 : i32
 ! CHECK: %[[C0:.*]] = arith.constant 0 : i32
-! CHECK: fir.call @_FortranAAllocatableInitDerived(%[[C1_CAST]], %[[TYPE_DESC_P1_CAST]], %[[RANK]], %[[C0]]) {{.*}}: (!fir.ref<!fir.box<none>>, !fir.ref<none>, i32, i32) -> none
+! CHECK: fir.call @_FortranAAllocatableInitDerivedForAllocate(%[[C1_CAST]], %[[TYPE_DESC_P1_CAST]], %[[RANK]], %[[C0]]) {{.*}}: (!fir.ref<!fir.box<none>>, !fir.ref<none>, i32, i32) -> none
 ! CHECK: %[[C1_CAST:.*]] = fir.convert %[[C1]] : (!fir.ref<!fir.class<!fir.heap<!fir.type<_QMpolyTp1{a:i32,b:i32}>>>>) -> !fir.ref<!fir.box<none>>
 ! CHECK: %{{.*}} = fir.call @_FortranAAllocatableAllocate(%[[C1_CAST]], %{{.*}}, %{{.*}}, %{{.*}}, %{{.*}}) {{.*}}: (!fir.ref<!fir.box<none>>, i1, !fir.box<none>, !fir.ref<i8>, i32) -> i32
 
@@ -276,7 +276,7 @@
 ! CHECK: %[[TYPE_DESC_P2_CAST:.*]] = fir.convert %[[TYPE_DESC_P2]] : (!fir.tdesc<!fir.type<_QMpolyTp2{a:i32,b:i32,c:i32}>>) -> !fir.ref<none>
 ! CHECK: %[[RANK:.*]] = arith.constant 0 : i32
 ! CHECK: %[[C0:.*]] = arith.constant 0 : i32
-! CHECK: fir.call @_FortranAAllocatableInitDerived(%[[C2_CAST]], %[[TYPE_DESC_P2_CAST]], %[[RANK]], %[[C0]]) {{.*}}: (!fir.ref<!fir.box<none>>, !fir.ref<none>, i32, i32) -> none
+! CHECK: fir.call @_FortranAAllocatableInitDerivedForAllocate(%[[C2_CAST]], %[[TYPE_DESC_P2_CAST]], %[[RANK]], %[[C0]]) {{.*}}: (!fir.ref<!fir.box<none>>, !fir.ref<none>, i32, i32) -> none
 ! CHECK: %[[C2_CAST:.*]] = fir.convert %[[C2]] : (!fir.ref<!fir.class<!fir.heap<!fir.type<_QMpolyTp1{a:i32,b:i32}>>>>) -> !fir.ref<!fir.box<none>>
 ! CHECK: %{{.*}} = fir.call @_FortranAAllocatableAllocate(%[[C2_CAST]], %{{.*}}, %{{.*}}, %{{.*}}, %{{.*}}) {{.*}}: (!fir.ref<!fir.box<none>>, i1, !fir.box<none>, !fir.ref<i8>, i32) -> i32
 
@@ -285,7 +285,7 @@
 ! CHECK: %[[TYPE_DESC_P1_CAST:.*]] = fir.convert %[[TYPE_DESC_P1]] : (!fir.tdesc<!fir.type<_QMpolyTp1{a:i32,b:i32}>>) -> !fir.ref<none>
 ! CHECK: %[[RANK:.*]] = arith.constant 1 : i32
 ! CHECK: %[[C0:.*]] = arith.constant 0 : i32
-! CHECK: fir.call @_FortranAAllocatableInitDerived(%[[C3_CAST]], %[[TYPE_DESC_P1_CAST]], %[[RANK]], %[[C0]]) {{.*}}: (!fir.ref<!fir.box<none>>, !fir.ref<none>, i32, i32) -> none
+! CHECK: fir.call @_FortranAAllocatableInitDerivedForAllocate(%[[C3_CAST]], %[[TYPE_DESC_P1_CAST]], %[[RANK]], %[[C0]]) {{.*}}: (!fir.ref<!fir.box<none>>, !fir.ref<none>, i32, i32) -> none
 ! CHECK: %[[C10:.*]] = arith.constant 10 : i32
 ! CHECK: %[[C0:.*]] = arith.constant 0 : i32
 ! CHECK: %[[C3_CAST:.*]] = fir.convert %[[C3]] : (!fir.ref<!fir.class<!fir.heap<!fir.array<?x!fir.type<_QMpolyTp1{a:i32,b:i32}>>>>>) -> !fir.ref<!fir.box<none>>
@@ -300,7 +300,7 @@
 ! CHECK: %[[TYPE_DESC_P2_CAST:.*]] = fir.convert %[[TYPE_DESC_P2]] : (!fir.tdesc<!fir.type<_QMpolyTp2{a:i32,b:i32,c:i32}>>) -> !fir.ref<none>
 ! CHECK: %[[RANK:.*]] = arith.constant 1 : i32
 ! CHECK: %[[C0:.*]] = arith.constant 0 : i32
-! CHECK: fir.call @_FortranAAllocatableInitDerived(%[[C4_CAST]], %[[TYPE_DESC_P2_CAST]], %[[RANK]], %[[C0]]) {{.*}}: (!fir.ref<!fir.box<none>>, !fir.ref<none>, i32, i32) -> none
+! CHECK: fir.call @_FortranAAllocatableInitDerivedForAllocate(%[[C4_CAST]], %[[TYPE_DESC_P2_CAST]], %[[RANK]], %[[C0]]) {{.*}}: (!fir.ref<!fir.box<none>>, !fir.ref<none>, i32, i32) -> none
 ! CHECK: %[[CST1:.*]] = arith.constant 1 : index
 ! CHECK: %[[C20:.*]] = arith.constant 20 : i32
 ! CHECK: %[[C0:.*]] = arith.constant 0 : i32
@@ -381,7 +381,7 @@
 ! CHECK: %[[KIND:.*]] = arith.constant 4 : i32
 ! CHECK: %[[RANK:.*]] = arith.constant 0 : i32
 ! CHECK: %[[CORANK:.*]] = arith.constant 0 : i32
-! CHECK: %{{.*}} = fir.call @_FortranAAllocatableInitIntrinsic(%[[BOX_NONE]], %[[CAT]], %[[KIND]], %[[RANK]], %[[CORANK]]) {{.*}} : (!fir.ref<!fir.box<none>>, i32, i32, i32, i32) -> none
+! CHECK: %{{.*}} = fir.call @_FortranAAllocatableInitIntrinsicForAllocate(%[[BOX_NONE]], %[[CAT]], %[[KIND]], %[[RANK]], %[[CORANK]]) {{.*}} : (!fir.ref<!fir.box<none>>, i32, i32, i32, i32) -> none
 ! CHECK: %[[BOX_NONE:.*]] = fir.convert %[[P]] : (!fir.ref<!fir.class<!fir.heap<none>>>) -> !fir.ref<!fir.box<none>>
 ! CHECK: %{{.*}} = fir.call @_FortranAAllocatableAllocate(%[[BOX_NONE]], %{{.*}}, %{{.*}}, %{{.*}}, %{{.*}}) {{.*}} : (!fir.ref<!fir.box<none>>, i1, !fir.box<none>, !fir.ref<i8>, i32) -> i32
 
@@ -548,7 +548,7 @@
 ! CHECK: %[[KIND:.*]] = arith.constant 1 : i32
 ! CHECK: %[[RANK:.*]] = arith.constant 0 : i32
 ! CHECK: %[[CORANK:.*]] = arith.constant 0 : i32
-! CHECK: %{{.*}} = fir.call @_FortranAAllocatableInitCharacter(%[[A_NONE]], %[[LEN]], %[[KIND]], %[[RANK]], %[[CORANK]]) {{.*}} : (!fir.ref<!fir.box<none>>, i64, i32, i32, i32) -> none
+! CHECK: %{{.*}} = fir.call @_FortranAAllocatableInitCharacterForAllocate(%[[A_NONE]], %[[LEN]], %[[KIND]], %[[RANK]], %[[CORANK]]) {{.*}} : (!fir.ref<!fir.box<none>>, i64, i32, i32, i32) -> none
 ! CHECK: %[[A_NONE:.*]] = fir.convert %[[A:.*]] : (!fir.ref<!fir.class<!fir.heap<none>>>) -> !fir.ref<!fir.box<none>>
 ! CHECK: %{{.*}} = fir.call @_FortranAAllocatableAllocate(%[[A_NONE]], %{{.*}}, %{{.*}}, %{{.*}}, %{{.*}}) {{.*}} : (!fir.ref<!fir.box<none>>, i1, !fir.box<none>, !fir.ref<i8>, i32) -> i32
 
@@ -568,16 +568,16 @@
 
 ! LLVM-LABEL: define void @_QMpolyPtest_allocatable()
 
-! LLVM: %{{.*}} = call {} @_FortranAAllocatableInitDerived(ptr %{{.*}}, ptr @_QMpolyE.dt.p1, i32 0, i32 0)
+! LLVM: %{{.*}} = call {} @_FortranAAllocatableInitDerivedForAllocate(ptr %{{.*}}, ptr @_QMpolyE.dt.p1, i32 0, i32 0)
 ! LLVM: %{{.*}} = call i32 @_FortranAAllocatableAllocate(ptr %{{.*}}, i1 false, ptr null, ptr @_QQcl.{{.*}}, i32 {{.*}})
-! LLVM: %{{.*}} = call {} @_FortranAAllocatableInitDerived(ptr %{{.*}}, ptr @_QMpolyE.dt.p1, i32 0, i32 0)
+! LLVM: %{{.*}} = call {} @_FortranAAllocatableInitDerivedForAllocate(ptr %{{.*}}, ptr @_QMpolyE.dt.p1, i32 0, i32 0)
 ! LLVM: %{{.*}} = call i32 @_FortranAAllocatableAllocate(ptr %{{.*}}, i1 false, ptr null, ptr @_QQcl.{{.*}}, i32 {{.*}})
-! LLVM: %{{.*}} = call {} @_FortranAAllocatableInitDerived(ptr %{{.*}}, ptr @_QMpolyE.dt.p2, i32 0, i32 0)
+! LLVM: %{{.*}} = call {} @_FortranAAllocatableInitDerivedForAllocate(ptr %{{.*}}, ptr @_QMpolyE.dt.p2, i32 0, i32 0)
 ! LLVM: %{{.*}} = call i32 @_FortranAAllocatableAllocate(ptr %{{.*}}, i1 false, ptr null, ptr @_QQcl.{{.*}}, i32 {{.*}})
-! LLVM: %{{.*}} = call {} @_FortranAAllocatableInitDerived(ptr %{{.*}}, ptr @_QMpolyE.dt.p1, i32 1, i32 0)
+! LLVM: %{{.*}} = call {} @_FortranAAllocatableInitDerivedForAllocate(ptr %{{.*}}, ptr @_QMpolyE.dt.p1, i32 1, i32 0)
 ! LLVM: %{{.*}} = call {} @_FortranAAllocatableSetBounds(ptr %{{.*}}, i32 0, i64 1, i64 10)
 ! LLVM: %{{.*}} = call i32 @_FortranAAllocatableAllocate(ptr %{{.*}}, i1 false, ptr null, ptr @_QQcl.{{.*}}, i32 {{.*}})
-! LLVM: %{{.*}} = call {} @_FortranAAllocatableInitDerived(ptr %{{.*}}, ptr @_QMpolyE.dt.p2, i32 1, i32 0)
+! LLVM: %{{.*}} = call {} @_FortranAAllocatableInitDerivedForAllocate(ptr %{{.*}}, ptr @_QMpolyE.dt.p2, i32 1, i32 0)
 ! LLVM: %{{.*}} = call {} @_FortranAAllocatableSetBounds(ptr %{{.*}}, i32 0, i64 1, i64 20)
 ! LLVM: %{{.*}} = call i32 @_FortranAAllocatableAllocate(ptr %{{.*}}, i1 false, ptr null, ptr @_QQcl.{{.*}}, i32 {{.*}})
 ! LLVM-COUNT-2:  call void %{{.*}}()
@@ -661,6 +661,6 @@
 ! LLVM: store { ptr, i64, i32, i8, i8, i8, i8, ptr, [1 x i64] } { ptr null, i64 ptrtoint (ptr getelementptr (%_QMpolyTp1, ptr null, i32 1) to i64), i32 20180515, i8 0, i8 42, i8 2, i8 1, ptr @_QMpolyE.dt.p1, [1 x i64] undef }, ptr %[[ALLOCA1]]
 ! LLVM: %[[LOAD:.*]] = load { ptr, i64, i32, i8, i8, i8, i8, ptr, [1 x i64] }, ptr %[[ALLOCA1]]
 ! LLVM: store { ptr, i64, i32, i8, i8, i8, i8, ptr, [1 x i64] } %[[LOAD]], ptr %[[ALLOCA2]]
-! LLVM: %{{.*}} = call {} @_FortranAAllocatableInitDerived(ptr %[[ALLOCA2]], ptr @_QMpolyE.dt.p1, i32 0, i32 0)
+! LLVM: %{{.*}} = call {} @_FortranAAllocatableInitDerivedForAllocate(ptr %[[ALLOCA2]], ptr @_QMpolyE.dt.p1, i32 0, i32 0)
 ! LLVM: %{{.*}} = call i32 @_FortranAAllocatableAllocate(ptr %[[ALLOCA2]], i1 false, ptr null, ptr @_QQcl.{{.*}}, i32 {{.*}})
 ! LLVM: %{{.*}} = call i32 @_FortranAAllocatableDeallocatePolymorphic(ptr %[[ALLOCA2]], ptr {{.*}}, i1 false, ptr null, ptr @_QQcl.{{.*}}, i32 {{.*}})
diff --git a/flang/test/Lower/allocatable-runtime.f90 b/flang/test/Lower/allocatable-runtime.f90
--- a/flang/test/Lower/allocatable-runtime.f90
+++ b/flang/test/Lower/allocatable-runtime.f90
@@ -77,14 +77,14 @@
   allocate(character(10):: scalar, array(30))
   ! CHECK-DAG: %[[sBoxCast1:.*]] = fir.convert %[[sBoxAddr]] : (!fir.ref<!fir.box<!fir.heap<!fir.char<1,?>>>>) -> !fir.ref<!fir.box<none>>
   ! CHECK-DAG: %[[ten1:.*]] = fir.convert %c10{{.*}} : (i32) -> i64
-  ! CHECK: fir.call @{{.*}}AllocatableInitCharacter(%[[sBoxCast1]], %[[ten1]], %c1{{.*}}, %c0{{.*}}, %c0{{.*}})
+  ! CHECK: fir.call @{{.*}}AllocatableInitCharacterForAllocate(%[[sBoxCast1]], %[[ten1]], %c1{{.*}}, %c0{{.*}}, %c0{{.*}})
   ! CHECK-NOT: AllocatableSetBounds
   ! CHECK: %[[sBoxCast2:.*]] = fir.convert %[[sBoxAddr]] : (!fir.ref<!fir.box<!fir.heap<!fir.char<1,?>>>>) -> !fir.ref<!fir.box<none>>
   ! CHECK: fir.call @{{.*}}AllocatableAllocate(%[[sBoxCast2]]
 
   ! CHECK-DAG: %[[aBoxCast1:.*]] = fir.convert %[[aBoxAddr]] : (!fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>>) -> !fir.ref<!fir.box<none>>
   ! CHECK-DAG: %[[ten2:.*]] = fir.convert %c10{{.*}} : (i32) -> i64
-  ! CHECK: fir.call @{{.*}}AllocatableInitCharacter(%[[aBoxCast1]], %[[ten2]], %c1{{.*}}, %c1{{.*}}, %c0{{.*}})
+  ! CHECK: fir.call @{{.*}}AllocatableInitCharacterForAllocate(%[[aBoxCast1]], %[[ten2]], %c1{{.*}}, %c1{{.*}}, %c0{{.*}})
   ! CHECK: %[[aBoxCast2:.*]] = fir.convert %[[aBoxAddr]] : (!fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>>) -> !fir.ref<!fir.box<none>>
   ! CHECK: fir.call @{{.*}}AllocatableSetBounds(%[[aBoxCast2]]
   ! CHECK: %[[aBoxCast3:.*]] = fir.convert %[[aBoxAddr]] : (!fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>>) -> !fir.ref<!fir.box<none>>
@@ -101,10 +101,10 @@
   ! CHECK: %[[n:.*]] = fir.load %arg0 : !fir.ref<i32>
   ! CHECK-DAG: %[[ncast1:.*]] = fir.convert %[[n]] : (i32) -> i64
   ! CHECK-DAG: %[[sBoxCast4:.*]] = fir.convert %[[sBoxAddr]] : (!fir.ref<!fir.box<!fir.heap<!fir.char<1,?>>>>) -> !fir.ref<!fir.box<none>>
-  ! CHECK: fir.call @{{.*}}AllocatableInitCharacter(%[[sBoxCast4]], %[[ncast1]], %c1{{.*}}, %c0{{.*}}, %c0{{.*}})
+  ! CHECK: fir.call @{{.*}}AllocatableInitCharacterForAllocate(%[[sBoxCast4]], %[[ncast1]], %c1{{.*}}, %c0{{.*}}, %c0{{.*}})
   ! CHECK-DAG: %[[ncast2:.*]] = fir.convert %[[n]] : (i32) -> i64
   ! CHECK-DAG: %[[aBoxCast5:.*]] = fir.convert %[[aBoxAddr]] : (!fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>>) -> !fir.ref<!fir.box<none>>
-  ! CHECK: fir.call @{{.*}}AllocatableInitCharacter(%[[aBoxCast5]], %[[ncast2]], %c1{{.*}}, %c1{{.*}}, %c0{{.*}})
+  ! CHECK: fir.call @{{.*}}AllocatableInitCharacterForAllocate(%[[aBoxCast5]], %[[ncast2]], %c1{{.*}}, %c1{{.*}}, %c0{{.*}})
 end subroutine
 
 ! CHECK-LABEL: _QPchar_explicit_cst(
diff --git a/flang/test/Lower/allocate-source-allocatables.f90 b/flang/test/Lower/allocate-source-allocatables.f90
--- a/flang/test/Lower/allocate-source-allocatables.f90
+++ b/flang/test/Lower/allocate-source-allocatables.f90
@@ -311,7 +311,7 @@
 ! CHECK:         %[[VAL_18:.*]] = arith.constant 1 : i32
 ! CHECK:         %[[VAL_19:.*]] = arith.constant 0 : i32
 ! CHECK:         %[[VAL_20:.*]] = arith.constant 0 : i32
-! CHECK:         %[[VAL_21:.*]] = fir.call @_FortranAAllocatableInitCharacter(%[[VAL_16]], %[[VAL_17]], %[[VAL_18]], %[[VAL_19]], %[[VAL_20]]) {{.*}}: (!fir.ref<!fir.box<none>>, i64, i32, i32, i32) -> none
+! CHECK:         %[[VAL_21:.*]] = fir.call @_FortranAAllocatableInitCharacterForAllocate(%[[VAL_16]], %[[VAL_17]], %[[VAL_18]], %[[VAL_19]], %[[VAL_20]]) {{.*}}: (!fir.ref<!fir.box<none>>, i64, i32, i32, i32) -> none
 ! CHECK:         %[[VAL_22:.*]] = fir.convert %[[VAL_3]] : (!fir.ref<!fir.box<!fir.heap<!fir.char<1,?>>>>) -> !fir.ref<!fir.box<none>>
 ! CHECK:         %[[VAL_23:.*]] = fir.convert %[[VAL_11]] : (!fir.box<!fir.char<1,?>>) -> !fir.box<none>
 ! CHECK:         %[[VAL_25:.*]] = fir.call @_FortranAAllocatableAllocateSource(%[[VAL_22]], %[[VAL_23]], %[[VAL_7]], %[[VAL_8]], %{{.*}}, %{{.*}}) {{.*}}: (!fir.ref<!fir.box<none>>, !fir.box<none>, i1, !fir.box<none>, !fir.ref<i8>, i32) -> i32