libgomp: Compile tests with -march=i486 only if needed

Don't add -march=i486 if atomic compare-and-swap is supported on 'int'.
This fixes libgomp tests with "-march=x86-64 -m32 -fcf-protection".

	* testsuite/lib/libgomp.exp (libgomp_init): Don't add -march=i486
	if atomic compare-and-swap is supported on 'int'.

diff --git a/libgomp/testsuite/lib/libgomp.exp b/libgomp/testsuite/lib/libgomp.exp
index 45c78d8..a205015 100644 (file)
--- a/libgomp/testsuite/lib/libgomp.exp
+++ b/libgomp/testsuite/lib/libgomp.exp
@@ -210,7 +210,8 @@ proc libgomp_init { args } {
 
     # We use atomic operations in the testcases to validate results.
     if { ([istarget i?86-*-*] || [istarget x86_64-*-*])
-        && [check_effective_target_ia32] } {
+        && [check_effective_target_ia32]
+        && ![check_effective_target_cas_char] } {
        lappend ALWAYS_CFLAGS "additional_flags=-march=i486"
     }