[libc++][pstl] Move the CPU algorithm implementations to __pstl (#89109)

This colocates the CPU algorithms closer to the rest of the PSTL
implementation details.
diff --git a/libcxx/include/CMakeLists.txt b/libcxx/include/CMakeLists.txt
index ee4979b..dc364cc 100644
--- a/libcxx/include/CMakeLists.txt
+++ b/libcxx/include/CMakeLists.txt
@@ -73,14 +73,6 @@
   __algorithm/pop_heap.h
   __algorithm/prev_permutation.h
   __algorithm/pstl_any_all_none_of.h
-  __algorithm/pstl_backends/cpu_backends/any_of.h
-  __algorithm/pstl_backends/cpu_backends/fill.h
-  __algorithm/pstl_backends/cpu_backends/find_if.h
-  __algorithm/pstl_backends/cpu_backends/for_each.h
-  __algorithm/pstl_backends/cpu_backends/merge.h
-  __algorithm/pstl_backends/cpu_backends/stable_sort.h
-  __algorithm/pstl_backends/cpu_backends/transform.h
-  __algorithm/pstl_backends/cpu_backends/transform_reduce.h
   __algorithm/pstl_copy.h
   __algorithm/pstl_count.h
   __algorithm/pstl_equal.h
@@ -593,7 +585,15 @@
   __pstl/backends/std_thread.h
   __pstl/configuration.h
   __pstl/configuration_fwd.h
+  __pstl/cpu_algos/any_of.h
   __pstl/cpu_algos/cpu_traits.h
+  __pstl/cpu_algos/fill.h
+  __pstl/cpu_algos/find_if.h
+  __pstl/cpu_algos/for_each.h
+  __pstl/cpu_algos/merge.h
+  __pstl/cpu_algos/stable_sort.h
+  __pstl/cpu_algos/transform.h
+  __pstl/cpu_algos/transform_reduce.h
   __random/bernoulli_distribution.h
   __random/binomial_distribution.h
   __random/cauchy_distribution.h
diff --git a/libcxx/include/__pstl/backends/libdispatch.h b/libcxx/include/__pstl/backends/libdispatch.h
index 977b06b..af1da80 100644
--- a/libcxx/include/__pstl/backends/libdispatch.h
+++ b/libcxx/include/__pstl/backends/libdispatch.h
@@ -349,13 +349,13 @@
 _LIBCPP_POP_MACROS
 
 // Implement PSTL algorithms based on the __cpu_traits specialized above
-#include <__algorithm/pstl_backends/cpu_backends/any_of.h>
-#include <__algorithm/pstl_backends/cpu_backends/fill.h>
-#include <__algorithm/pstl_backends/cpu_backends/find_if.h>
-#include <__algorithm/pstl_backends/cpu_backends/for_each.h>
-#include <__algorithm/pstl_backends/cpu_backends/merge.h>
-#include <__algorithm/pstl_backends/cpu_backends/stable_sort.h>
-#include <__algorithm/pstl_backends/cpu_backends/transform.h>
-#include <__algorithm/pstl_backends/cpu_backends/transform_reduce.h>
+#include <__pstl/cpu_algos/any_of.h>
+#include <__pstl/cpu_algos/fill.h>
+#include <__pstl/cpu_algos/find_if.h>
+#include <__pstl/cpu_algos/for_each.h>
+#include <__pstl/cpu_algos/merge.h>
+#include <__pstl/cpu_algos/stable_sort.h>
+#include <__pstl/cpu_algos/transform.h>
+#include <__pstl/cpu_algos/transform_reduce.h>
 
 #endif // _LIBCPP___PSTL_BACKENDS_LIBDISPATCH_H
diff --git a/libcxx/include/__pstl/backends/serial.h b/libcxx/include/__pstl/backends/serial.h
index 8bb8945..6e34331 100644
--- a/libcxx/include/__pstl/backends/serial.h
+++ b/libcxx/include/__pstl/backends/serial.h
@@ -82,13 +82,13 @@
 #endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && && _LIBCPP_STD_VER >= 17
 
 // Implement PSTL algorithms based on the __cpu_traits specialized above
-#include <__algorithm/pstl_backends/cpu_backends/any_of.h>
-#include <__algorithm/pstl_backends/cpu_backends/fill.h>
-#include <__algorithm/pstl_backends/cpu_backends/find_if.h>
-#include <__algorithm/pstl_backends/cpu_backends/for_each.h>
-#include <__algorithm/pstl_backends/cpu_backends/merge.h>
-#include <__algorithm/pstl_backends/cpu_backends/stable_sort.h>
-#include <__algorithm/pstl_backends/cpu_backends/transform.h>
-#include <__algorithm/pstl_backends/cpu_backends/transform_reduce.h>
+#include <__pstl/cpu_algos/any_of.h>
+#include <__pstl/cpu_algos/fill.h>
+#include <__pstl/cpu_algos/find_if.h>
+#include <__pstl/cpu_algos/for_each.h>
+#include <__pstl/cpu_algos/merge.h>
+#include <__pstl/cpu_algos/stable_sort.h>
+#include <__pstl/cpu_algos/transform.h>
+#include <__pstl/cpu_algos/transform_reduce.h>
 
 #endif // _LIBCPP___PSTL_BACKENDS_SERIAL_H
diff --git a/libcxx/include/__pstl/backends/std_thread.h b/libcxx/include/__pstl/backends/std_thread.h
index ab09f42..e58f485 100644
--- a/libcxx/include/__pstl/backends/std_thread.h
+++ b/libcxx/include/__pstl/backends/std_thread.h
@@ -85,13 +85,13 @@
 _LIBCPP_POP_MACROS
 
 // Implement PSTL algorithms based on the __cpu_traits specialized above
-#include <__algorithm/pstl_backends/cpu_backends/any_of.h>
-#include <__algorithm/pstl_backends/cpu_backends/fill.h>
-#include <__algorithm/pstl_backends/cpu_backends/find_if.h>
-#include <__algorithm/pstl_backends/cpu_backends/for_each.h>
-#include <__algorithm/pstl_backends/cpu_backends/merge.h>
-#include <__algorithm/pstl_backends/cpu_backends/stable_sort.h>
-#include <__algorithm/pstl_backends/cpu_backends/transform.h>
-#include <__algorithm/pstl_backends/cpu_backends/transform_reduce.h>
+#include <__pstl/cpu_algos/any_of.h>
+#include <__pstl/cpu_algos/fill.h>
+#include <__pstl/cpu_algos/find_if.h>
+#include <__pstl/cpu_algos/for_each.h>
+#include <__pstl/cpu_algos/merge.h>
+#include <__pstl/cpu_algos/stable_sort.h>
+#include <__pstl/cpu_algos/transform.h>
+#include <__pstl/cpu_algos/transform_reduce.h>
 
 #endif // _LIBCPP___PSTL_BACKENDS_STD_THREAD_H
diff --git a/libcxx/include/__algorithm/pstl_backends/cpu_backends/any_of.h b/libcxx/include/__pstl/cpu_algos/any_of.h
similarity index 94%
rename from libcxx/include/__algorithm/pstl_backends/cpu_backends/any_of.h
rename to libcxx/include/__pstl/cpu_algos/any_of.h
index 3db4765..01b9d21 100644
--- a/libcxx/include/__algorithm/pstl_backends/cpu_backends/any_of.h
+++ b/libcxx/include/__pstl/cpu_algos/any_of.h
@@ -6,8 +6,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKEND_ANY_OF_H
-#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKEND_ANY_OF_H
+#ifndef _LIBCPP___PSTL_CPU_ALGOS_ANY_OF_H
+#define _LIBCPP___PSTL_CPU_ALGOS_ANY_OF_H
 
 #include <__algorithm/any_of.h>
 #include <__algorithm/find_if.h>
@@ -96,4 +96,4 @@
 
 #endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
-#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKEND_ANY_OF_H
+#endif // _LIBCPP___PSTL_CPU_ALGOS_ANY_OF_H
diff --git a/libcxx/include/__algorithm/pstl_backends/cpu_backends/fill.h b/libcxx/include/__pstl/cpu_algos/fill.h
similarity index 92%
rename from libcxx/include/__algorithm/pstl_backends/cpu_backends/fill.h
rename to libcxx/include/__pstl/cpu_algos/fill.h
index b5a49f8..66fb751 100644
--- a/libcxx/include/__algorithm/pstl_backends/cpu_backends/fill.h
+++ b/libcxx/include/__pstl/cpu_algos/fill.h
@@ -6,8 +6,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_FILL_H
-#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_FILL_H
+#ifndef _LIBCPP___PSTL_CPU_ALGOS_FILL_H
+#define _LIBCPP___PSTL_CPU_ALGOS_FILL_H
 
 #include <__algorithm/fill.h>
 #include <__config>
@@ -60,4 +60,4 @@
 
 #endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
-#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_FILL_H
+#endif // _LIBCPP___PSTL_CPU_ALGOS_FILL_H
diff --git a/libcxx/include/__algorithm/pstl_backends/cpu_backends/find_if.h b/libcxx/include/__pstl/cpu_algos/find_if.h
similarity index 95%
rename from libcxx/include/__algorithm/pstl_backends/cpu_backends/find_if.h
rename to libcxx/include/__pstl/cpu_algos/find_if.h
index 2b1754e..c99ec01 100644
--- a/libcxx/include/__algorithm/pstl_backends/cpu_backends/find_if.h
+++ b/libcxx/include/__pstl/cpu_algos/find_if.h
@@ -6,8 +6,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_FIND_IF_H
-#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_FIND_IF_H
+#ifndef _LIBCPP___PSTL_CPU_ALGOS_FIND_IF_H
+#define _LIBCPP___PSTL_CPU_ALGOS_FIND_IF_H
 
 #include <__algorithm/find_if.h>
 #include <__atomic/atomic.h>
@@ -132,4 +132,4 @@
 
 #endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
-#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_FIND_IF_H
+#endif // _LIBCPP___PSTL_CPU_ALGOS_FIND_IF_H
diff --git a/libcxx/include/__algorithm/pstl_backends/cpu_backends/for_each.h b/libcxx/include/__pstl/cpu_algos/for_each.h
similarity index 91%
rename from libcxx/include/__algorithm/pstl_backends/cpu_backends/for_each.h
rename to libcxx/include/__pstl/cpu_algos/for_each.h
index 6db212e..cd7ce02 100644
--- a/libcxx/include/__algorithm/pstl_backends/cpu_backends/for_each.h
+++ b/libcxx/include/__pstl/cpu_algos/for_each.h
@@ -6,8 +6,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKNEDS_FOR_EACH_H
-#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKNEDS_FOR_EACH_H
+#ifndef _LIBCPP___PSTL_CPU_ALGOS_FOR_EACH_H
+#define _LIBCPP___PSTL_CPU_ALGOS_FOR_EACH_H
 
 #include <__algorithm/for_each.h>
 #include <__config>
@@ -60,4 +60,4 @@
 
 #endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
-#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKNEDS_FOR_EACH_H
+#endif // _LIBCPP___PSTL_CPU_ALGOS_FOR_EACH_H
diff --git a/libcxx/include/__algorithm/pstl_backends/cpu_backends/merge.h b/libcxx/include/__pstl/cpu_algos/merge.h
similarity index 93%
rename from libcxx/include/__algorithm/pstl_backends/cpu_backends/merge.h
rename to libcxx/include/__pstl/cpu_algos/merge.h
index f3e59e8..b857fc1 100644
--- a/libcxx/include/__algorithm/pstl_backends/cpu_backends/merge.h
+++ b/libcxx/include/__pstl/cpu_algos/merge.h
@@ -6,8 +6,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_MERGE_H
-#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_MERGE_H
+#ifndef _LIBCPP___PSTL_CPU_ALGOS_MERGE_H
+#define _LIBCPP___PSTL_CPU_ALGOS_MERGE_H
 
 #include <__algorithm/merge.h>
 #include <__config>
@@ -83,4 +83,4 @@
 
 #endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
-#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_MERGE_H
+#endif // _LIBCPP___PSTL_CPU_ALGOS_MERGE_H
diff --git a/libcxx/include/__algorithm/pstl_backends/cpu_backends/stable_sort.h b/libcxx/include/__pstl/cpu_algos/stable_sort.h
similarity index 87%
rename from libcxx/include/__algorithm/pstl_backends/cpu_backends/stable_sort.h
rename to libcxx/include/__pstl/cpu_algos/stable_sort.h
index 9ad8cc8..18effb2 100644
--- a/libcxx/include/__algorithm/pstl_backends/cpu_backends/stable_sort.h
+++ b/libcxx/include/__pstl/cpu_algos/stable_sort.h
@@ -6,8 +6,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_STABLE_SORT_H
-#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_STABLE_SORT_H
+#ifndef _LIBCPP___PSTL_CPU_ALGOS_STABLE_SORT_H
+#define _LIBCPP___PSTL_CPU_ALGOS_STABLE_SORT_H
 
 #include <__algorithm/stable_sort.h>
 #include <__config>
@@ -43,4 +43,4 @@
 
 #endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
-#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_STABLE_SORT_H
+#endif // _LIBCPP___PSTL_CPU_ALGOS_STABLE_SORT_H
diff --git a/libcxx/include/__algorithm/pstl_backends/cpu_backends/transform.h b/libcxx/include/__pstl/cpu_algos/transform.h
similarity index 96%
rename from libcxx/include/__algorithm/pstl_backends/cpu_backends/transform.h
rename to libcxx/include/__pstl/cpu_algos/transform.h
index 65e166d..70853dc 100644
--- a/libcxx/include/__algorithm/pstl_backends/cpu_backends/transform.h
+++ b/libcxx/include/__pstl/cpu_algos/transform.h
@@ -6,8 +6,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_TRANSFORM_H
-#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_TRANSFORM_H
+#ifndef _LIBCPP___PSTL_CPU_ALGOS_TRANSFORM_H
+#define _LIBCPP___PSTL_CPU_ALGOS_TRANSFORM_H
 
 #include <__algorithm/transform.h>
 #include <__config>
@@ -136,4 +136,4 @@
 
 #endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
 
-#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_TRANSFORM_H
+#endif // _LIBCPP___PSTL_CPU_ALGOS_TRANSFORM_H
diff --git a/libcxx/include/__algorithm/pstl_backends/cpu_backends/transform_reduce.h b/libcxx/include/__pstl/cpu_algos/transform_reduce.h
similarity index 96%
rename from libcxx/include/__algorithm/pstl_backends/cpu_backends/transform_reduce.h
rename to libcxx/include/__pstl/cpu_algos/transform_reduce.h
index af481d5..a85ee9f 100644
--- a/libcxx/include/__algorithm/pstl_backends/cpu_backends/transform_reduce.h
+++ b/libcxx/include/__pstl/cpu_algos/transform_reduce.h
@@ -6,8 +6,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_TRANSFORM_REDUCE_H
-#define _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_TRANSFORM_REDUCE_H
+#ifndef _LIBCPP___PSTL_CPU_ALGOS_TRANSFORM_REDUCE_H
+#define _LIBCPP___PSTL_CPU_ALGOS_TRANSFORM_REDUCE_H
 
 #include <__config>
 #include <__iterator/concepts.h>
@@ -203,4 +203,4 @@
 
 _LIBCPP_POP_MACROS
 
-#endif // _LIBCPP___ALGORITHM_PSTL_BACKENDS_CPU_BACKENDS_TRANSFORM_REDUCE_H
+#endif // _LIBCPP___PSTL_CPU_ALGOS_TRANSFORM_REDUCE_H
diff --git a/libcxx/include/libcxx.imp b/libcxx/include/libcxx.imp
index a4e2690..c224090 100644
--- a/libcxx/include/libcxx.imp
+++ b/libcxx/include/libcxx.imp
@@ -73,14 +73,6 @@
   { include: [ "<__algorithm/pop_heap.h>", "private", "<algorithm>", "public" ] },
   { include: [ "<__algorithm/prev_permutation.h>", "private", "<algorithm>", "public" ] },
   { include: [ "<__algorithm/pstl_any_all_none_of.h>", "private", "<algorithm>", "public" ] },
-  { include: [ "<__algorithm/pstl_backends/cpu_backends/any_of.h>", "private", "<algorithm>", "public" ] },
-  { include: [ "<__algorithm/pstl_backends/cpu_backends/fill.h>", "private", "<algorithm>", "public" ] },
-  { include: [ "<__algorithm/pstl_backends/cpu_backends/find_if.h>", "private", "<algorithm>", "public" ] },
-  { include: [ "<__algorithm/pstl_backends/cpu_backends/for_each.h>", "private", "<algorithm>", "public" ] },
-  { include: [ "<__algorithm/pstl_backends/cpu_backends/merge.h>", "private", "<algorithm>", "public" ] },
-  { include: [ "<__algorithm/pstl_backends/cpu_backends/stable_sort.h>", "private", "<algorithm>", "public" ] },
-  { include: [ "<__algorithm/pstl_backends/cpu_backends/transform.h>", "private", "<algorithm>", "public" ] },
-  { include: [ "<__algorithm/pstl_backends/cpu_backends/transform_reduce.h>", "private", "<algorithm>", "public" ] },
   { include: [ "<__algorithm/pstl_copy.h>", "private", "<algorithm>", "public" ] },
   { include: [ "<__algorithm/pstl_count.h>", "private", "<algorithm>", "public" ] },
   { include: [ "<__algorithm/pstl_equal.h>", "private", "<algorithm>", "public" ] },
diff --git a/libcxx/include/module.modulemap b/libcxx/include/module.modulemap
index f996c2c..62ac431 100644
--- a/libcxx/include/module.modulemap
+++ b/libcxx/include/module.modulemap
@@ -714,14 +714,6 @@
 module std_private_algorithm_pop_heap                                    [system] { header "__algorithm/pop_heap.h" }
 module std_private_algorithm_prev_permutation                            [system] { header "__algorithm/prev_permutation.h" }
 module std_private_algorithm_pstl_any_all_none_of                        [system] { header "__algorithm/pstl_any_all_none_of.h" }
-module std_private_algorithm_pstl_backends_cpu_backends_any_of           [system] { textual header "__algorithm/pstl_backends/cpu_backends/any_of.h" }
-module std_private_algorithm_pstl_backends_cpu_backends_fill             [system] { textual header "__algorithm/pstl_backends/cpu_backends/fill.h" }
-module std_private_algorithm_pstl_backends_cpu_backends_find_if          [system] { textual header "__algorithm/pstl_backends/cpu_backends/find_if.h" }
-module std_private_algorithm_pstl_backends_cpu_backends_for_each         [system] { textual header "__algorithm/pstl_backends/cpu_backends/for_each.h" }
-module std_private_algorithm_pstl_backends_cpu_backends_merge            [system] { textual header "__algorithm/pstl_backends/cpu_backends/merge.h" }
-module std_private_algorithm_pstl_backends_cpu_backends_stable_sort      [system] { textual header "__algorithm/pstl_backends/cpu_backends/stable_sort.h" }
-module std_private_algorithm_pstl_backends_cpu_backends_transform        [system] { textual header "__algorithm/pstl_backends/cpu_backends/transform.h" }
-module std_private_algorithm_pstl_backends_cpu_backends_transform_reduce [system] { textual header "__algorithm/pstl_backends/cpu_backends/transform_reduce.h" }
 module std_private_algorithm_pstl_copy                                   [system] { header "__algorithm/pstl_copy.h" }
 module std_private_algorithm_pstl_count                                  [system] { header "__algorithm/pstl_count.h" }
 module std_private_algorithm_pstl_equal                                  [system] { header "__algorithm/pstl_equal.h" }
@@ -1595,15 +1587,23 @@
 module std_private_numeric_transform_inclusive_scan [system] { header "__numeric/transform_inclusive_scan.h" }
 module std_private_numeric_transform_reduce         [system] { header "__numeric/transform_reduce.h" }
 
-module std_private_pstl_backends_libdispatch      [system] { header "__pstl/backends/libdispatch.h" }
-module std_private_pstl_backends_serial           [system] { header "__pstl/backends/serial.h" }
-module std_private_pstl_backends_std_thread       [system] { header "__pstl/backends/std_thread.h" }
-module std_private_pstl_cpu_algos_cpu_traits      [system] { header "__pstl/cpu_algos/cpu_traits.h" }
-module std_private_pstl_configuration_fwd         [system] {
+module std_private_pstl_backends_libdispatch       [system] { header "__pstl/backends/libdispatch.h" }
+module std_private_pstl_backends_serial            [system] { header "__pstl/backends/serial.h" }
+module std_private_pstl_backends_std_thread        [system] { header "__pstl/backends/std_thread.h" }
+module std_private_pstl_cpu_algos_any_of           [system] { textual header "__pstl/cpu_algos/any_of.h" }
+module std_private_pstl_cpu_algos_cpu_traits       [system] { header "__pstl/cpu_algos/cpu_traits.h" }
+module std_private_pstl_cpu_algos_fill             [system] { textual header "__pstl/cpu_algos/fill.h" }
+module std_private_pstl_cpu_algos_find_if          [system] { textual header "__pstl/cpu_algos/find_if.h" }
+module std_private_pstl_cpu_algos_for_each         [system] { textual header "__pstl/cpu_algos/for_each.h" }
+module std_private_pstl_cpu_algos_merge            [system] { textual header "__pstl/cpu_algos/merge.h" }
+module std_private_pstl_cpu_algos_stable_sort      [system] { textual header "__pstl/cpu_algos/stable_sort.h" }
+module std_private_pstl_cpu_algos_transform        [system] { textual header "__pstl/cpu_algos/transform.h" }
+module std_private_pstl_cpu_algos_transform_reduce [system] { textual header "__pstl/cpu_algos/transform_reduce.h" }
+module std_private_pstl_configuration_fwd          [system] {
   header "__pstl/configuration_fwd.h"
   export *
 }
-module std_private_pstl_configuration             [system] {
+module std_private_pstl_configuration              [system] {
   header "__pstl/configuration.h"
   export *
 }