[gcc/devel/omp/gcc-10] OpenMP 5.0: requires directive: adjust libgomp HSA plugin

[gcc/devel/omp/gcc-10] OpenMP 5.0: requires directive: adjust libgomp HSA plugin

[Thomas Schwinge]

https://gcc.gnu.org/g:4ef4921cb10693c59b488002179db131683af8bc

commit 4ef4921cb10693c59b488002179db131683af8bc
Author: Thomas Schwinge <thomas@codesourcery.com>
Date:   Wed Mar 3 22:51:01 2021 +0100

    OpenMP 5.0: requires directive: adjust libgomp HSA plugin
    
    Fix-up for og10 commit c2e4a17adc0989f216c7fc3f93f150c66adba23a "OpenMP 5.0:
    requires directive".
    
        libgomp: while loading libgomp-plugin-hsa.so.1: [...]/libgomp-plugin-hsa.so.1: undefined symbol: GOMP_OFFLOAD_supported_features
    
            libgomp/
            * plugin/plugin-hsa.c (GOMP_OFFLOAD_supported_features): New
            function.

Diff:
---
 libgomp/ChangeLog.omp       | 3 +++
 libgomp/plugin/plugin-hsa.c | 8 ++++++++
 2 files changed, 11 insertions(+)

diff --git a/libgomp/ChangeLog.omp b/libgomp/ChangeLog.omp
index 03ca74c8f3d..19f48dc6120 100644
--- a/libgomp/ChangeLog.omp
+++ b/libgomp/ChangeLog.omp
@@ -1,5 +1,8 @@
 2021-03-25  Thomas Schwinge  <thomas@codesourcery.com>
 
+	* plugin/plugin-hsa.c (GOMP_OFFLOAD_supported_features): New
+	function.
+
 	* target.c (__requires_mask_table, __requires_mask_table_end): Add
 	'__attribute__((weak))'.
 
diff --git a/libgomp/plugin/plugin-hsa.c b/libgomp/plugin/plugin-hsa.c
index abd3bc64163..bddb690ca14 100644
--- a/libgomp/plugin/plugin-hsa.c
+++ b/libgomp/plugin/plugin-hsa.c
@@ -1869,3 +1869,11 @@ GOMP_OFFLOAD_dev2dev (int ord, void *dst, const void *src, size_t n)
 		     "it should never be called");
   return false;
 }
+
+/* Indicate which GOMP_REQUIRES_* features are supported, currently none.  */
+
+bool
+GOMP_OFFLOAD_supported_features (unsigned int *mask)
+{
+  return (*mask == 0);
+}