testsuite: Add _link flavor for several arm_arch* and arm* effective-targets

For arm targets, we generate many effective-targets with
check_effective_target_FUNC_multilib and
check_effective_target_arm_arch_FUNC_multilib which check if we can
link and execute a simple program with a given set of flags/multilibs.

In some cases however, it's possible to link but not to execute a
program, so this patch adds similar _link effective-targets which only
check if link succeeds.

The patch does not uupdate the documentation as it already lacks the
numerous existing related effective-targets.

2023-07-07  Christophe Lyon  <christophe.lyon@linaro.org>

	gcc/testsuite/
	* lib/target-supports.exp (arm_*FUNC_link): New effective-targets.

1 files changed, 27 insertions, 0 deletions

diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
index b16853d..33482b2 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -5129,6 +5129,14 @@ foreach { armfunc armflag armdefs } {
 	    return "$flags FLAG"
 	}
 
+        proc check_effective_target_arm_arch_FUNC_link { } {
+	    return [check_no_compiler_messages arm_arch_FUNC_link executable {
+		#include <stdint.h>
+		int dummy;
+		int main (void) { return 0; }
+	    } [add_options_for_arm_arch_FUNC ""]]
+	}
+
 	proc check_effective_target_arm_arch_FUNC_multilib { } {
 	    return [check_runtime arm_arch_FUNC_multilib {
 		int
@@ -5906,6 +5914,7 @@ proc add_options_for_arm_v8_2a_bf16_neon { flags } {
 #   arm_v8m_main_cde: Armv8-m CDE (Custom Datapath Extension).
 #   arm_v8m_main_cde_fp: Armv8-m CDE with FP registers.
 #   arm_v8_1m_main_cde_mve: Armv8.1-m CDE with MVE.
+#   arm_v8_1m_main_cde_mve_fp: Armv8.1-m CDE with MVE with FP support.
 # Usage:
 #   /* { dg-require-effective-target arm_v8m_main_cde_ok } */
 #   /* { dg-add-options arm_v8m_main_cde } */
@@ -5965,6 +5974,24 @@ foreach { armfunc armflag armdef arminc } {
 	    return "$flags $et_FUNC_flags"
 	}
 
+        proc check_effective_target_FUNC_link { } {
+	    if { ! [check_effective_target_FUNC_ok] } {
+		return 0;
+	    }
+	    return [check_no_compiler_messages FUNC_link executable {
+		#if !(DEF)
+		#error "DEF failed"
+		#endif
+		#include <arm_cde.h>
+		INC
+		int
+		main (void)
+		{
+		    return 0;
+		}
+	    } [add_options_for_FUNC ""]]
+	}
+
 	proc check_effective_target_FUNC_multilib { } {
 	    if { ! [check_effective_target_FUNC_ok] } {
 		return 0;