Enable OpenACC GCN testing.

2019-12-03  Andrew Stubbs  <ams@codesourcery.com>

	libgomp/
	* testsuite/lib/libgomp.exp (offload_target_to_openacc_device_type):
	Recognize amdgcn.
	(check_effective_target_openacc_amdgcn_accel_present): New proc.
	(check_effective_target_openacc_amdgcn_accel_selected): New proc.
	* testsuite/libgomp.oacc-c++/c++.exp: Add support for amdgcn.
	* testsuite/libgomp.oacc-c/c.exp: Likewise.
	* testsuite/libgomp.oacc-fortran/fortran.exp: Likewise.

From-SVN: r278935

libgomp/ChangeLog

+2019-12-03  Andrew Stubbs  <ams@codesourcery.com>
+
+	* testsuite/lib/libgomp.exp (offload_target_to_openacc_device_type):
+	Recognize amdgcn.
+	(check_effective_target_openacc_amdgcn_accel_present): New proc.
+	(check_effective_target_openacc_amdgcn_accel_selected): New proc.
+	* testsuite/libgomp.oacc-c++/c++.exp: Add support for amdgcn.
+	* testsuite/libgomp.oacc-c/c.exp: Likewise.
+	* testsuite/libgomp.oacc-fortran/fortran.exp: Likewise.
+
 2019-12-03  Szabolcs Nagy  <szabolcs.nagy@arm.com>
 
 	PR libgomp/91938

libgomp/testsuite/lib/libgomp.exp

@@ -318,6 +318,9 @@ proc libgomp_option_proc { option } {
 # not supported, and 'host' for offload target 'disable'.
 proc offload_target_to_openacc_device_type { offload_target } {
     switch -glob $offload_target {
+	amdgcn* {
+	    return "gcn"
+	}
 	disable {
 	    return "host"
 	}
@@ -479,3 +482,29 @@ proc check_effective_target_hsa_offloading_selected {} {
 	check_effective_target_hsa_offloading_selected_nocache
     }]
 }
+
+# Return 1 if at least one AMD GCN board is present.
+
+proc check_effective_target_openacc_amdgcn_accel_present { } {
+    return [check_runtime openacc_amdgcn_accel_present {
+	#include <openacc.h>
+	int main () {
+	return !(acc_get_num_devices (acc_device_gcn) > 0);
+	}
+    } "" ]
+}
+
+# Return 1 if at least one AMD GCN board is present, and the AMD GCN device
+# type is selected by default.
+
+proc check_effective_target_openacc_amdgcn_accel_selected { } {
+    if { ![check_effective_target_openacc_amdgcn_accel_present] } {
+	return 0;
+    }
+    global offload_target
+    if { [string match "amdgcn*" $offload_target] } {
+        return 1;
+    }
+    return 0;
+}
+

libgomp/testsuite/libgomp.oacc-c++/c++.exp

@@ -88,6 +88,15 @@ if { $lang_test_file_found } {
 		unsupported "$subdir $offload_target offloading"
 		continue
 	    }
+	    gcn {
+		if { ![check_effective_target_openacc_amdgcn_accel_present] } {
+		    # Don't bother; execution testing is going to FAIL.
+		    untested "$subdir $offload_target offloading: supported, but hardware not accessible"
+		    continue
+		}
+
+		set acc_mem_shared 0
+	    }
 	    host {
 		set acc_mem_shared 1
 	    }

libgomp/testsuite/libgomp.oacc-c/c.exp

@@ -51,6 +51,15 @@ foreach offload_target [concat [split $offload_targets ","] "disable"] {
 	    unsupported "$subdir $offload_target offloading"
 	    continue
 	}
+	gcn {
+	    if { ![check_effective_target_openacc_amdgcn_accel_present] } {
+		# Don't bother; execution testing is going to FAIL.
+		untested "$subdir $offload_target offloading: supported, but hardware not accessible"
+		continue
+	    }
+
+	    set acc_mem_shared 0
+	}
 	host {
 	    set acc_mem_shared 1
 	}

libgomp/testsuite/libgomp.oacc-fortran/fortran.exp

@@ -82,6 +82,15 @@ if { $lang_test_file_found } {
 		unsupported "$subdir $offload_target offloading"
 		continue
 	    }
+	    gcn {
+		if { ![check_effective_target_openacc_amdgcn_accel_present] } {
+		    # Don't bother; execution testing is going to FAIL.
+		    untested "$subdir $offload_target offloading: supported, but hardware not accessible"
+		    continue
+		}
+
+		set acc_mem_shared 0
+	    }
 	    host {
 		set acc_mem_shared 1
 	    }