1 ; RUN: opt < %s -instcombine -S | grep {call.*llvm.stackrestore}
3 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-f80:32:32"
4 target triple = "i386-pc-linux-gnu"
5 @p = weak global i8* null ; <i8**> [#uses=2]
7 define i32 @main() nounwind {
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 volatile store i8* %tmpcast53, i8** @p, align 4
19 bb44: ; 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 volatile store i8* %tmpcast, i8** @p, align 4
33 %exitcond = icmp eq i32 %tmp3857, 999999 ; <i1> [#uses=1]
34 br i1 %exitcond, label %bb, label %bb44
37 declare i8* @llvm.stacksave() nounwind
39 declare void @llvm.stackrestore(i8*) nounwind