libstdc++: Add -latomic to test flags for 32-bit sparc-linux

Without this I see a number of tests failing when -m32 is used.

libstdc++-v3/ChangeLog:

	* testsuite/lib/dg-options.exp (add_options_for_libatomic): Also
	add libatomic options for 32-bit sparc*-*-linux-gnu.

diff --git a/libstdc++-v3/testsuite/lib/dg-options.exp b/libstdc++-v3/testsuite/lib/dg-options.exp
index 5160e4a72d1d445334b1ab24d8b39b52b3cb9e49..7894973bcca18791074a911ef992292bd90c8323 100644 (file)
--- a/libstdc++-v3/testsuite/lib/dg-options.exp
+++ b/libstdc++-v3/testsuite/lib/dg-options.exp
@@ -264,6 +264,7 @@ proc add_options_for_libatomic { flags } {
     if { [istarget hppa*-*-hpux*]
         || ([istarget powerpc*-*-*] && [check_effective_target_ilp32])
         || [istarget riscv*-*-*]
+        || ([istarget sparc*-*-linux-gnu] && [check_effective_target_ilp32])
        } {
        return "$flags -L../../libatomic/.libs -latomic"
     }