1; RUN: opt < %s -loop-reduce -S | FileCheck %s
2
3; The multiply in bb2 must not be reduced to an add, as the sext causes the
4; %1 argument to become negative after a while.
5
6; CHECK: sext i8
7; CHECK: mul i32
8; CHECK: store i32
9
10target 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"
11target triple = "i386-apple-darwin9.6"
12@table = common global [32 x [256 x i32]] zeroinitializer, align 32		; <[32 x [256 x i32]]*> [#uses=2]
13
14define i32 @main() nounwind {
15bb4.thread:
16	br label %bb2
17
18bb2:		; preds = %bb4, %bb2, %bb4.thread
19	%i.0.reg2mem.0.ph = phi i32 [ 0, %bb4.thread ], [ %i.0.reg2mem.0.ph, %bb2 ], [ %indvar.next9, %bb4 ]		; <i32> [#uses=4]
20	%j.0.reg2mem.0 = phi i32 [ 0, %bb4.thread ], [ %indvar.next, %bb2 ], [ 0, %bb4 ]		; <i32> [#uses=3]
21	%0 = trunc i32 %j.0.reg2mem.0 to i8		; <i8> [#uses=1]
22	%1 = sext i8 %0 to i32		; <i32> [#uses=1]
23	%2 = mul i32 %1, %i.0.reg2mem.0.ph		; <i32> [#uses=1]
24	%3 = getelementptr [32 x [256 x i32]], [32 x [256 x i32]]* @table, i32 0, i32 %i.0.reg2mem.0.ph, i32 %j.0.reg2mem.0		; <i32*> [#uses=1]
25	store i32 %2, i32* %3, align 4
26	%indvar.next = add i32 %j.0.reg2mem.0, 1		; <i32> [#uses=2]
27	%exitcond = icmp eq i32 %indvar.next, 256		; <i1> [#uses=1]
28	br i1 %exitcond, label %bb4, label %bb2
29
30bb4:		; preds = %bb2
31	%indvar.next9 = add i32 %i.0.reg2mem.0.ph, 1		; <i32> [#uses=2]
32	%exitcond10 = icmp eq i32 %indvar.next9, 32		; <i1> [#uses=1]
33	br i1 %exitcond10, label %bb5, label %bb2
34
35bb5:		; preds = %bb4
36	%4 = load i32, i32* getelementptr ([32 x [256 x i32]], [32 x [256 x i32]]* @table, i32 0, i32 9, i32 132), align 16		; <i32> [#uses=1]
37	%5 = icmp eq i32 %4, -1116		; <i1> [#uses=1]
38	br i1 %5, label %bb7, label %bb6
39
40bb6:		; preds = %bb5
41	tail call void @abort() noreturn nounwind
42	unreachable
43
44bb7:		; preds = %bb5
45	ret i32 0
46}
47
48declare void @abort() noreturn nounwind
49