1 ; RUN: opt < %s -S -loop-unroll -mtriple aarch64 -mcpu=cortex-a57 -unroll-runtime-epilog=true | FileCheck %s -check-prefix=EPILOG
2 ; RUN: opt < %s -S -loop-unroll -mtriple aarch64 -mcpu=cortex-a57 -unroll-runtime-epilog=false | FileCheck %s -check-prefix=PROLOG
4 ; Tests for unrolling loops with run-time trip counts
6 ; EPILOG: %xtraiter = and i32 %n
8 ; EPILOG: %lcmp.mod = icmp ne i32 %xtraiter, 0
9 ; EPILOG: br i1 %lcmp.mod, label %for.body.epil.preheader, label %for.end.loopexit
10 ; EPILOG: for.body.epil:
12 ; PROLOG: %xtraiter = and i32 %n
13 ; PROLOG: %lcmp.mod = icmp ne i32 %xtraiter, 0
14 ; PROLOG: br i1 %lcmp.mod, label %for.body.prol.preheader, label %for.body.prol.loopexit
15 ; PROLOG: for.body.prol:
18 define i32 @test(i32* nocapture %a, i32 %n) nounwind uwtable readonly {
20 %cmp1 = icmp eq i32 %n, 0
21 br i1 %cmp1, label %for.end, label %for.body
23 for.body: ; preds = %for.body, %entry
24 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
25 %sum.02 = phi i32 [ %add, %for.body ], [ 0, %entry ]
26 %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
27 %0 = load i32, i32* %arrayidx, align 4
28 %add = add nsw i32 %0, %sum.02
29 %indvars.iv.next = add i64 %indvars.iv, 1
30 %lftr.wideiv = trunc i64 %indvars.iv.next to i32
31 %exitcond = icmp eq i32 %lftr.wideiv, %n
32 br i1 %exitcond, label %for.end, label %for.body
34 for.end: ; preds = %for.body, %entry
35 %sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ]