1; RUN: opt < %s -O1 -S -loop-versioning-licm -licm -debug-only=loop-versioning-licm -disable-loop-unrolling -enable-new-pm=0 2>&1 | FileCheck %s 2; RUN: opt < %s -S -passes='default<O1>,loop-versioning-licm,licm' --aa-pipeline=default -debug-only=loop-versioning-licm -disable-loop-unrolling 2>&1 | FileCheck %s 3; REQUIRES: asserts 4; 5; Test to confirm loop is a good candidate for LoopVersioningLICM 6; It also confirms invariant moved out of loop. 7; 8; CHECK: Loop: Loop at depth 2 containing: %for.body3.us<header><latch><exiting> 9; CHECK-NEXT: Loop Versioning found to be beneficial 10; 11; CHECK: for.cond1.for.inc17_crit_edge.us.loopexit6: ; preds = %for.body3.us 12; CHECK-NEXT: %add14.us.lcssa = phi float [ %add14.us, %for.body3.us ] 13; CHECK-NEXT: store float %add14.us.lcssa, float* %arrayidx.us, align 4, !alias.scope !0, !noalias !0 14; CHECK-NEXT: br label %for.cond1.for.inc17_crit_edge.us 15; 16define i32 @foo(float* nocapture %var2, float** nocapture readonly %var3, i32 %itr) #0 { 17entry: 18 %cmp38 = icmp sgt i32 %itr, 1 19 br i1 %cmp38, label %for.body3.lr.ph.us, label %for.end19 20 21for.body3.us: ; preds = %for.body3.us, %for.body3.lr.ph.us 22 %0 = phi float [ %.pre, %for.body3.lr.ph.us ], [ %add14.us, %for.body3.us ] 23 %indvars.iv = phi i64 [ 1, %for.body3.lr.ph.us ], [ %indvars.iv.next, %for.body3.us ] 24 %1 = trunc i64 %indvars.iv to i32 25 %conv.us = sitofp i32 %1 to float 26 %add.us = fadd float %conv.us, %0 27 %arrayidx7.us = getelementptr inbounds float, float* %3, i64 %indvars.iv 28 store float %add.us, float* %arrayidx7.us, align 4 29 %2 = load float, float* %arrayidx.us, align 4 30 %add14.us = fadd float %2, %add.us 31 store float %add14.us, float* %arrayidx.us, align 4 32 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 33 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 34 %exitcond = icmp eq i32 %lftr.wideiv, %itr 35 br i1 %exitcond, label %for.cond1.for.inc17_crit_edge.us, label %for.body3.us 36 37for.body3.lr.ph.us: ; preds = %entry, %for.cond1.for.inc17_crit_edge.us 38 %indvars.iv40 = phi i64 [ %indvars.iv.next41, %for.cond1.for.inc17_crit_edge.us ], [ 1, %entry ] 39 %arrayidx.us = getelementptr inbounds float, float* %var2, i64 %indvars.iv40 40 %arrayidx6.us = getelementptr inbounds float*, float** %var3, i64 %indvars.iv40 41 %3 = load float*, float** %arrayidx6.us, align 8 42 %.pre = load float, float* %arrayidx.us, align 4 43 br label %for.body3.us 44 45for.cond1.for.inc17_crit_edge.us: ; preds = %for.body3.us 46 %indvars.iv.next41 = add nuw nsw i64 %indvars.iv40, 1 47 %lftr.wideiv42 = trunc i64 %indvars.iv.next41 to i32 48 %exitcond43 = icmp eq i32 %lftr.wideiv42, %itr 49 br i1 %exitcond43, label %for.end19, label %for.body3.lr.ph.us 50 51for.end19: ; preds = %for.cond1.for.inc17_crit_edge.us, %entry 52 ret i32 0 53} 54