Implement __builtin_alloca

2 files changed, 15 insertions, 0 deletions

diff --git a/tests/builtin-alloca.c b/tests/builtin-alloca.c
new file mode 100644
index 0000000..f086f19
--- /dev/null
+++ b/tests/builtin-alloca.c
@@ -0,0 +1,3 @@
+void f(void) {
+	int *x = __builtin_alloca(32);
+}
diff --git a/tests/builtin-alloca.qbe b/tests/builtin-alloca.qbe
new file mode 100644
index 0000000..75a1fe1
--- /dev/null
+++ b/tests/builtin-alloca.qbe
@@ -0,0 +1,12 @@
+export
+function $f() {
+@start.1
+	%.1 =l alloc8 8
+@body.2
+	%.2 =l add %.1, 0
+	%.3 =l extsw 32
+	%.4 =l alloc16 %.3
+	%.5 =l copy %.4
+	storel %.5, %.2
+	ret
+}