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1; RUN: opt < %s -instcombine -disable-output
2target 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"
3target triple = "i686-apple-darwin8"
4
5declare void @__darwin_gcc3_preregister_frame_info()
6
7define void @_start(i32 %argc, i8** %argv, i8** %envp) {
8entry:
9	%tmp1 = bitcast void ()* @__darwin_gcc3_preregister_frame_info to i32*		; <i32*> [#uses=1]
10	%tmp2 = load i32, i32* %tmp1, align 4		; <i32> [#uses=1]
11	%tmp3 = icmp ne i32 %tmp2, 0		; <i1> [#uses=1]
12	%tmp34 = zext i1 %tmp3 to i8		; <i8> [#uses=1]
13	%toBool = icmp ne i8 %tmp34, 0		; <i1> [#uses=1]
14	br i1 %toBool, label %cond_true, label %return
15
16cond_true:		; preds = %entry
17	ret void
18
19return:		; preds = %entry
20	ret void
21}
22