[gcc/devel/omp/gcc-12] libgomp testsuite: Don't amend 'LD_LIBRARY_PATH' for system-provided HSA Runtime library

[Kwok Yeung <kcy@gcc.gnu.org>]

https://gcc.gnu.org/g:cb3cdd60f6b3ca9a354cdcaf4be024142473d215

commit cb3cdd60f6b3ca9a354cdcaf4be024142473d215
Author: Thomas Schwinge <thomas@codesourcery.com>
Date:   Wed Apr 6 10:39:56 2022 +0200

    libgomp testsuite: Don't amend 'LD_LIBRARY_PATH' for system-provided HSA Runtime library
    
    This is only active if GCC is 'configure'd with '--with-hsa-runtime=[...]' or
    '--with-hsa-runtime-lib=[...]' -- which nobody really is doing, as far as I can
    tell.
    
    'libgomp/testsuite/lib/libgomp.exp:libgomp_init' states:
    
        # For build-tree testing, also consider the library paths used for builing.
        # For installed testing, we assume all that to be provided in the sysroot.
        if { $blddir != "" } {
            [...]
            global hsa_runtime_lib
            if { $hsa_runtime_lib != "" } {
                append always_ld_library_path ":$hsa_runtime_lib"
            }
        }
    
    However, the libgomp GCN plugin is unconditionally built against the
    GCC-shipped 'include/hsa*.h' header files, and at run time does
    'dlopen("libhsa-runtime64.so.1")', so there is no system-provided HSA Runtime
    library "used for builing".  It thus doesn't make sense to amend
    'LD_LIBRARY_PATH' for system-provided HSA Runtime library.
    
            libgomp/
            * testsuite/lib/libgomp.exp (libgomp_init): Don't
            'append always_ld_library_path ":$hsa_runtime_lib"'.
            * testsuite/libgomp-test-support.exp.in (hsa_runtime_lib): Don't set.
    
    (cherry picked from commit 2e309a4eff80e55b53d32d26926a2a94eabfea21)

Diff:
---
 libgomp/ChangeLog.omp                         | 9 +++++++++
 libgomp/testsuite/lib/libgomp.exp             | 4 ----
 libgomp/testsuite/libgomp-test-support.exp.in | 1 -
 3 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/libgomp/ChangeLog.omp b/libgomp/ChangeLog.omp
index b5557c5e951..fe766716ae1 100644
--- a/libgomp/ChangeLog.omp
+++ b/libgomp/ChangeLog.omp
@@ -1,3 +1,12 @@
+2022-04-06  Thomas Schwinge  <thomas@codesourcery.com>
+
+	Backport from mainline:
+	2022-04-06  Thomas Schwinge  <thomas@codesourcery.com>
+
+	* testsuite/lib/libgomp.exp (libgomp_init): Don't
+	'append always_ld_library_path ":$hsa_runtime_lib"'.
+	* testsuite/libgomp-test-support.exp.in (hsa_runtime_lib): Don't set.
+
 2022-05-10  Thomas Schwinge  <thomas@codesourcery.com>
 
 	Backport from mainline:
diff --git a/libgomp/testsuite/lib/libgomp.exp b/libgomp/testsuite/lib/libgomp.exp
index 8c5ecfff0ac..0aaa58f19c5 100644
--- a/libgomp/testsuite/lib/libgomp.exp
+++ b/libgomp/testsuite/lib/libgomp.exp
@@ -202,10 +202,6 @@ proc libgomp_init { args } {
 	    lappend ALWAYS_CFLAGS "additional_flags=-L$cuda_driver_lib"
 	    append always_ld_library_path ":$cuda_driver_lib"
 	}
-	global hsa_runtime_lib
-	if { $hsa_runtime_lib != "" } {
-	    append always_ld_library_path ":$hsa_runtime_lib"
-	}
     }
 
     # We use atomic operations in the testcases to validate results.
diff --git a/libgomp/testsuite/libgomp-test-support.exp.in b/libgomp/testsuite/libgomp-test-support.exp.in
index 98fb442b537..3c88d1d5a62 100644
--- a/libgomp/testsuite/libgomp-test-support.exp.in
+++ b/libgomp/testsuite/libgomp-test-support.exp.in
@@ -1,6 +1,5 @@
 set cuda_driver_include "@CUDA_DRIVER_INCLUDE@"
 set cuda_driver_lib "@CUDA_DRIVER_LIB@"
-set hsa_runtime_lib "@HSA_RUNTIME_LIB@"
 
 set offload_plugins "@offload_plugins@"
 set offload_targets "@offload_targets@"