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1; RUN: opt < %s -passes=instcombine -disable-output2target 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, ptr %argv, ptr %envp) {8entry:9 %tmp2 = load i32, ptr @__darwin_gcc3_preregister_frame_info, align 4 ; <i32> [#uses=1]10 %tmp3 = icmp ne i32 %tmp2, 0 ; <i1> [#uses=1]11 %tmp34 = zext i1 %tmp3 to i8 ; <i8> [#uses=1]12 %toBool = icmp ne i8 %tmp34, 0 ; <i1> [#uses=1]13 br i1 %toBool, label %cond_true, label %return14 15cond_true: ; preds = %entry16 ret void17 18return: ; preds = %entry19 ret void20}21