[gcc/devel/omp/gcc-12] Miscellaneous clean-up re OpenMP 'ompx_unified_shared_mem_space', 'ompx_host_mem_space'

[gcc/devel/omp/gcc-12] Miscellaneous clean-up re OpenMP 'ompx_unified_shared_mem_space', 'ompx_host_mem_space'

[Thomas Schwinge]

https://gcc.gnu.org/g:23f52e49368d7b26a1b1a72d6bb903d31666e961

commit 23f52e49368d7b26a1b1a72d6bb903d31666e961
Author: Thomas Schwinge <thomas@codesourcery.com>
Date:   Tue Feb 14 17:10:57 2023 +0100

    Miscellaneous clean-up re OpenMP 'ompx_unified_shared_mem_space', 'ompx_host_mem_space'
    
    Clean-up for og12 commit 84914e197d91a67b3d27db0e4c69a433462983a5
    "openmp, nvptx: ompx_unified_shared_mem_alloc".  No functional change.
    
            libgomp/
            * config/linux/allocator.c (linux_memspace_calloc): Elide
            (innocuous) duplicate 'if' condition.
            * config/nvptx/allocator.c (nvptx_memspace_free): Explicitly
            handle 'memspace == ompx_host_mem_space'.
            * libgomp.h (gomp_is_usm_ptr): Remove.

Diff:
---
 libgomp/ChangeLog.omp            | 6 ++++++
 libgomp/config/linux/allocator.c | 3 +--
 libgomp/config/nvptx/allocator.c | 4 ++++
 libgomp/libgomp.h                | 1 -
 4 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/libgomp/ChangeLog.omp b/libgomp/ChangeLog.omp
index b667c72b8ca..1c4b1833c0b 100644
--- a/libgomp/ChangeLog.omp
+++ b/libgomp/ChangeLog.omp
@@ -1,5 +1,11 @@
 2023-02-16  Thomas Schwinge  <thomas@codesourcery.com>
 
+	* config/linux/allocator.c (linux_memspace_calloc): Elide
+	(innocuous) duplicate 'if' condition.
+	* config/nvptx/allocator.c (nvptx_memspace_free): Explicitly
+	handle 'memspace == ompx_host_mem_space'.
+	* libgomp.h (gomp_is_usm_ptr): Remove.
+
 	* basic-allocator.c (BASIC_ALLOC_YIELD): instead of '#deine',
 	'#define' it.
 
diff --git a/libgomp/config/linux/allocator.c b/libgomp/config/linux/allocator.c
index 07af3a2821a..8a9171c36df 100644
--- a/libgomp/config/linux/allocator.c
+++ b/libgomp/config/linux/allocator.c
@@ -95,8 +95,7 @@ linux_memspace_calloc (omp_memspace_handle_t memspace, size_t size, int pin)
       memset (ret, 0, size);
       return ret;
     }
-  else if (memspace == ompx_unified_shared_mem_space
-      || pin)
+  else if (pin)
     return linux_memspace_alloc (memspace, size, pin);
   else
     return calloc (1, size);
diff --git a/libgomp/config/nvptx/allocator.c b/libgomp/config/nvptx/allocator.c
index 7c2a7463bf7..cbf86b8a2ec 100644
--- a/libgomp/config/nvptx/allocator.c
+++ b/libgomp/config/nvptx/allocator.c
@@ -42,6 +42,7 @@
    chunks.  */
 
 #include "libgomp.h"
+#include <assert.h>
 #include <stdlib.h>
 
 #define BASIC_ALLOC_PREFIX __nvptx_lowlat
@@ -93,6 +94,9 @@ nvptx_memspace_free (omp_memspace_handle_t memspace, void *addr, size_t size)
 
       __nvptx_lowlat_free (shared_pool, addr, size);
     }
+  else if (memspace == ompx_host_mem_space)
+    /* Just verify what all allocator functions return.  */
+    assert (addr == NULL);
   else
     free (addr);
 }
diff --git a/libgomp/libgomp.h b/libgomp/libgomp.h
index d1e45cc584e..c001b468252 100644
--- a/libgomp/libgomp.h
+++ b/libgomp/libgomp.h
@@ -1133,7 +1133,6 @@ extern void gomp_target_rev (uint64_t, uint64_t, uint64_t, uint64_t, uint64_t,
 			     void *);
 extern void * gomp_usm_alloc (size_t size, int device_num);
 extern void gomp_usm_free (void *device_ptr, int device_num);
-extern bool gomp_is_usm_ptr (void *ptr);
 
 /* Splay tree definitions.  */
 typedef struct splay_tree_node_s *splay_tree_node;