1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -jump-threading -loop-rotate -instcombine -indvars -loop-unroll -simplifycfg -S -verify-dom-info -verify-loop-info > %t 2*9880d681SAndroid Build Coastguard Worker; RUN: grep "store volatile" %t | count 3 3*9880d681SAndroid Build Coastguard Worker; RUN: not grep "br label" %t 4*9880d681SAndroid Build Coastguard Worker 5*9880d681SAndroid Build Coastguard Worker; Jump threading should not prevent this loop from being unrolled. 6*9880d681SAndroid Build Coastguard Worker 7*9880d681SAndroid Build Coastguard Workertarget 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" 8*9880d681SAndroid Build Coastguard Workertarget triple = "i386-apple-darwin9.6" 9*9880d681SAndroid Build Coastguard Worker@v1 = external global i32 ; <i32*> [#uses=2] 10*9880d681SAndroid Build Coastguard Worker 11*9880d681SAndroid Build Coastguard Workerdefine i32 @unroll() nounwind { 12*9880d681SAndroid Build Coastguard Workerentry: 13*9880d681SAndroid Build Coastguard Worker br label %bb4 14*9880d681SAndroid Build Coastguard Worker 15*9880d681SAndroid Build Coastguard Workerbb: ; preds = %bb4 16*9880d681SAndroid Build Coastguard Worker %0 = icmp eq i32 %i.0, 0 ; <i1> [#uses=1] 17*9880d681SAndroid Build Coastguard Worker br i1 %0, label %bb1, label %bb2 18*9880d681SAndroid Build Coastguard Worker 19*9880d681SAndroid Build Coastguard Workerbb1: ; preds = %bb 20*9880d681SAndroid Build Coastguard Worker store volatile i32 1000, i32* @v1, align 4 21*9880d681SAndroid Build Coastguard Worker br label %bb3 22*9880d681SAndroid Build Coastguard Worker 23*9880d681SAndroid Build Coastguard Workerbb2: ; preds = %bb 24*9880d681SAndroid Build Coastguard Worker store volatile i32 1001, i32* @v1, align 4 25*9880d681SAndroid Build Coastguard Worker br label %bb3 26*9880d681SAndroid Build Coastguard Worker 27*9880d681SAndroid Build Coastguard Workerbb3: ; preds = %bb2, %bb1 28*9880d681SAndroid Build Coastguard Worker %1 = add i32 %i.0, 1 ; <i32> [#uses=1] 29*9880d681SAndroid Build Coastguard Worker br label %bb4 30*9880d681SAndroid Build Coastguard Worker 31*9880d681SAndroid Build Coastguard Workerbb4: ; preds = %bb3, %entry 32*9880d681SAndroid Build Coastguard Worker %i.0 = phi i32 [ 0, %entry ], [ %1, %bb3 ] ; <i32> [#uses=3] 33*9880d681SAndroid Build Coastguard Worker %2 = icmp sgt i32 %i.0, 2 ; <i1> [#uses=1] 34*9880d681SAndroid Build Coastguard Worker br i1 %2, label %bb5, label %bb 35*9880d681SAndroid Build Coastguard Worker 36*9880d681SAndroid Build Coastguard Workerbb5: ; preds = %bb4 37*9880d681SAndroid Build Coastguard Worker ret i32 0 38*9880d681SAndroid Build Coastguard Worker} 39