1 files changed, 21 insertions, 0 deletions
diff --git a/test/CodeGen/X86/force-align-stack.ll b/test/CodeGen/X86/force-align-stack.ll
new file mode 100644
index 0000000000..ffcbf8a908
--- /dev/null
+++ b/test/CodeGen/X86/force-align-stack.ll
@@ -0,0 +1,21 @@
+; RUN: llc < %s -relocation-model=static -force-align-stack | FileCheck %s
+; Tests to make sure that we always align the stack out to the minimum needed - 
+; in this case 16-bytes.
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32"
+target triple = "i386-apple-darwin10.3"
+
+define void @a() nounwind ssp {
+entry:
+; CHECK: _a:
+; CHECK: andl    $-16, %esp
+  %z = alloca <16 x i8>                           ; <<16 x i8>*> [#uses=2]
+  %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
+  store <16 x i8> zeroinitializer, <16 x i8>* %z, align 16
+  call void @b(<16 x i8>* %z) nounwind
+  br label %return
+
+return:                                           ; preds = %entry
+  ret void
+}
+
+declare void @b(<16 x i8>*)