1; RUN: opt < %s -passes='print<loopnest>' -disable-output 2>&1 | FileCheck %s 2 3; Test that the loop nest analysis is able to analyze an infinite loop in a loop nest. 4define void @test1(i32** %A, i1 %cond) { 5; CHECK-LABEL: IsPerfect=true, Depth=1, OutermostLoop: for.inner, Loops: ( for.inner ) 6; CHECK-LABEL: IsPerfect=false, Depth=2, OutermostLoop: for.outer, Loops: ( for.outer for.inner ) 7; CHECK-LABEL: IsPerfect=true, Depth=1, OutermostLoop: for.infinite, Loops: ( for.infinite ) 8entry: 9 br label %for.outer 10 11for.outer: 12 %i = phi i64 [ 0, %entry ], [ %inc_i, %for.outer.latch ] 13 br i1 %cond, label %for.inner, label %for.infinite 14 15for.inner: 16 %j = phi i64 [ 0, %for.outer ], [ %inc_j, %for.inner ] 17 %arrayidx_i = getelementptr inbounds i32*, i32** %A, i64 %i 18 %0 = load i32*, i32** %arrayidx_i, align 8 19 %arrayidx_j = getelementptr inbounds i32, i32* %0, i64 %j 20 store i32 0, i32* %arrayidx_j, align 4 21 %inc_j = add nsw i64 %j, 1 22 %cmp_j = icmp slt i64 %inc_j, 100 23 br i1 %cmp_j, label %for.inner, label %for.outer.latch 24 25for.infinite: 26 br label %for.infinite 27 28for.outer.latch: 29 %inc_i = add nsw i64 %i, 1 30 %cmp_i = icmp slt i64 %inc_i, 100 31 br i1 %cmp_i, label %for.outer, label %for.end 32 33for.end: 34 ret void 35} 36