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1; REQUIRES: asserts2; RUN: opt -debug-only=loop-unroll-and-jam -passes="loop-unroll-and-jam" -enable-unroll-and-jam -allow-unroll-and-jam -unroll-and-jam-count=8 -disable-output %s 2>&1 | FileCheck %s3 4; CHECK: Loop Unroll and Jam: F[h] Loop %bb85; CHECK: Won't unroll-and-jam; only loops with single exit blocks can be unrolled and jammed6 7@a = external global i16, align 28@e = external global i32, align 49@f = external global i16, align 210@b = external global i16, align 211@c = external global i64, align 812 13define void @h() {14bb:15 store i32 4, ptr @e, align 416 %i15 = load i16, ptr @b, align 217 %i17 = icmp slt i16 %i15, 118 br label %bb819 20bb8: ; preds = %bb, %bb4721 %storemerge15 = phi i32 [ 4, %bb ], [ %i49, %bb47 ]22 br label %bb2423 24bb24: ; preds = %bb43, %bb825 %storemerge312 = phi i16 [ 0, %bb8 ], [ %i45, %bb43 ]26 br i1 %i17, label %bb46.preheader, label %bb4327 28bb46.preheader: ; preds = %bb2429 store i16 %storemerge312, ptr @f, align 230 br label %bb4631 32bb43: ; preds = %bb2433 %i45 = add nuw nsw i16 %storemerge312, 134 %i13 = icmp ult i16 %storemerge312, 735 br i1 %i13, label %bb24, label %bb4736 37bb46: ; preds = %bb46.preheader, %bb4638 br label %bb4639 40bb47: ; preds = %bb4341 %i49 = add nsw i32 %storemerge15, -142 store i32 %i49, ptr @e, align 443 %i7.not = icmp eq i32 %i49, 044 br i1 %i7.not, label %bb50, label %bb845 46bb50: ; preds = %bb4747 store i16 %i45, ptr @f, align 248 ret void49}50