2 files changed, 28 insertions, 0 deletions
diff --git a/tests/bitfield-compound-assign.c b/tests/bitfield-compound-assign.c
new file mode 100644
index 0000000..5ca42e4
--- /dev/null
+++ b/tests/bitfield-compound-assign.c
@@ -0,0 +1,7 @@
+struct {
+	int : 4, x : 9, : 3;
+} s;
+
+void f(void) {
+	s.x += 3;
+}
diff --git a/tests/bitfield-compound-assign.qbe b/tests/bitfield-compound-assign.qbe
new file mode 100644
index 0000000..829f5f6
--- /dev/null
+++ b/tests/bitfield-compound-assign.qbe
@@ -0,0 +1,21 @@
+export
+function $f() {
+@start.1
+@body.2
+	%.1 =l copy $s
+	%.2 =l mul 0, 1
+	%.3 =l add %.1, %.2
+	%.4 =l copy %.3
+	%.5 =w loadsw %.4
+	%.6 =w shl %.5, 19
+	%.7 =w sar %.6, 23
+	%.8 =w add %.7, 3
+	%.9 =w loaduw %.4
+	%.10 =w and %.9, 18446744073709543439
+	%.11 =w shl %.8, 4
+	%.12 =w and %.11, 8176
+	%.13 =w or %.10, %.12
+	storew %.13, %.4
+	ret
+}
+export data $s = align 4 { z 4 }