diff --git a/gas/testsuite/gas/sparc/.Sanitize b/gas/testsuite/gas/sparc/.Sanitize
index ef145782c5c..e67b6ef9ba8 100644
--- a/gas/testsuite/gas/sparc/.Sanitize
+++ b/gas/testsuite/gas/sparc/.Sanitize
@@ -33,6 +33,8 @@ prefetch.d
 prefetch.s
 rdpr.d
 rdpr.s
+synth.d
+synth.s
 synth64.d
 synth64.s
 sparc.exp
diff --git a/gas/testsuite/gas/sparc/synth.d b/gas/testsuite/gas/sparc/synth.d
new file mode 100644
index 00000000000..e65cfd3ba9f
--- /dev/null
+++ b/gas/testsuite/gas/sparc/synth.d
@@ -0,0 +1,11 @@
+#as: -Av7
+#objdump: -dr
+#name: sparc synth
+
+.*: +file format .*sparc.*
+
+Disassembly of section .text:
+0+0000 <foo> xnor  %g1, %g0, %g2
+0+0004 <foo\+4> xnor  %g1, %g0, %g1
+0+0008 <foo\+8> neg  %g1, %g2
+0+000c <foo\+c> neg  %g1
diff --git a/gas/testsuite/gas/sparc/synth.s b/gas/testsuite/gas/sparc/synth.s
new file mode 100644
index 00000000000..375709e701c
--- /dev/null
+++ b/gas/testsuite/gas/sparc/synth.s
@@ -0,0 +1,7 @@
+# sparc64 synthetic insns
+	.text
+foo:
+	not %g1,%g2
+	not %g1
+	neg %g1,%g2
+	neg %g1