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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt -S -passes=jump-threading,loop-rotate,instcombine,indvars,loop-unroll,simplifycfg -simplifycfg-require-and-preserve-domtree=1 -verify-dom-info -verify-loop-info < %s | FileCheck %s3 4; Jump threading should not prevent this loop from being unrolled.5; There should be 3 volatile stores and no branch6 7target 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"8target triple = "i386-apple-darwin9.6"9@v1 = external global i32 ; <ptr> [#uses=2]10 11define i32 @unroll() nounwind {12; CHECK-LABEL: @unroll(13; CHECK-NEXT: entry:14; CHECK-NEXT: store volatile i32 1000, ptr @v1, align 415; CHECK-NEXT: store volatile i32 1001, ptr @v1, align 416; CHECK-NEXT: store volatile i32 1001, ptr @v1, align 417; CHECK-NEXT: ret i32 018;19entry:20 br label %bb421 22bb: ; preds = %bb423 %0 = icmp eq i32 %i.0, 0 ; <i1> [#uses=1]24 br i1 %0, label %bb1, label %bb225 26bb1: ; preds = %bb27 store volatile i32 1000, ptr @v1, align 428 br label %bb329 30bb2: ; preds = %bb31 store volatile i32 1001, ptr @v1, align 432 br label %bb333 34bb3: ; preds = %bb2, %bb135 %1 = add i32 %i.0, 1 ; <i32> [#uses=1]36 br label %bb437 38bb4: ; preds = %bb3, %entry39 %i.0 = phi i32 [ 0, %entry ], [ %1, %bb3 ] ; <i32> [#uses=3]40 %2 = icmp sgt i32 %i.0, 2 ; <i1> [#uses=1]41 br i1 %2, label %bb5, label %bb42 43bb5: ; preds = %bb444 ret i32 045}46