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* [gcc r12-1343] libgomp: Compile tests with -march=i486 only if needed
@ 2021-06-09 17:06 H.J. Lu
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From: H.J. Lu @ 2021-06-09 17:06 UTC (permalink / raw)
  To: gcc-cvs

https://gcc.gnu.org/g:c8d581bdf731714977b1592e74d05e000535e338

commit r12-1343-gc8d581bdf731714977b1592e74d05e000535e338
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Sun Jun 6 05:36:23 2021 -0700

    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:
---
 libgomp/testsuite/lib/libgomp.exp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libgomp/testsuite/lib/libgomp.exp b/libgomp/testsuite/lib/libgomp.exp
index 45c78d8510e..a2050151e84 100644
--- 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"
     }


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