1; RUN: opt < %s -instcombine -S | grep "call.*llvm.stackrestore"
2; PR2488
3target 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-f80:32:32"
4target triple = "i386-pc-linux-gnu"
5@p = weak global i8* null		; <i8**> [#uses=2]
6
7define i32 @main() nounwind  {
8entry:
9	%tmp248 = call i8* @llvm.stacksave( )		; <i8*> [#uses=1]
10	%tmp2752 = alloca i32		; <i32*> [#uses=2]
11	%tmpcast53 = bitcast i32* %tmp2752 to i8*		; <i8*> [#uses=1]
12	store i32 2, i32* %tmp2752, align 4
13	store volatile i8* %tmpcast53, i8** @p, align 4
14	br label %bb44
15
16bb:		; preds = %bb44
17	ret i32 0
18
19bb44:		; preds = %bb44, %entry
20	%indvar = phi i32 [ 0, %entry ], [ %tmp3857, %bb44 ]		; <i32> [#uses=1]
21	%tmp249 = phi i8* [ %tmp248, %entry ], [ %tmp2, %bb44 ]		; <i8*> [#uses=1]
22	%tmp3857 = add i32 %indvar, 1		; <i32> [#uses=3]
23	call void @llvm.stackrestore( i8* %tmp249 )
24	%tmp2 = call i8* @llvm.stacksave( )		; <i8*> [#uses=1]
25	%tmp4 = srem i32 %tmp3857, 1000		; <i32> [#uses=2]
26	%tmp5 = add i32 %tmp4, 1		; <i32> [#uses=1]
27	%tmp27 = alloca i32, i32 %tmp5		; <i32*> [#uses=3]
28	%tmpcast = bitcast i32* %tmp27 to i8*		; <i8*> [#uses=1]
29	store i32 1, i32* %tmp27, align 4
30	%tmp34 = getelementptr i32* %tmp27, i32 %tmp4		; <i32*> [#uses=1]
31	store i32 2, i32* %tmp34, align 4
32	store volatile i8* %tmpcast, i8** @p, align 4
33	%exitcond = icmp eq i32 %tmp3857, 999999		; <i1> [#uses=1]
34	br i1 %exitcond, label %bb, label %bb44
35}
36
37declare i8* @llvm.stacksave() nounwind
38
39declare void @llvm.stackrestore(i8*) nounwind
40