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 3; RUN: opt < %s -S -loop-unroll -mtriple aarch64 -mcpu=cortex-r82 -unroll-runtime-epilog=true | FileCheck %s -check-prefix=EPILOG 4; RUN: opt < %s -S -loop-unroll -mtriple aarch64 -mcpu=cortex-r82 -unroll-runtime-epilog=false | FileCheck %s -check-prefix=PROLOG 5 6; Tests for unrolling loops with run-time trip counts 7 8; EPILOG: %xtraiter = and i32 %n 9; EPILOG: for.body: 10; EPILOG: %lcmp.mod = icmp ne i32 %xtraiter, 0 11; EPILOG: br i1 %lcmp.mod, label %for.body.epil.preheader, label %for.end.loopexit 12; EPILOG: for.body.epil: 13 14; PROLOG: %xtraiter = and i32 %n 15; PROLOG: %lcmp.mod = icmp ne i32 %xtraiter, 0 16; PROLOG: br i1 %lcmp.mod, label %for.body.prol.preheader, label %for.body.prol.loopexit 17; PROLOG: for.body.prol: 18; PROLOG: for.body: 19 20define i32 @test(i32* nocapture %a, i32 %n) nounwind uwtable readonly { 21entry: 22 %cmp1 = icmp eq i32 %n, 0 23 br i1 %cmp1, label %for.end, label %for.body 24 25for.body: ; preds = %for.body, %entry 26 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ] 27 %sum.02 = phi i32 [ %add, %for.body ], [ 0, %entry ] 28 %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv 29 %0 = load i32, i32* %arrayidx, align 4 30 %add = add nsw i32 %0, %sum.02 31 %indvars.iv.next = add i64 %indvars.iv, 1 32 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 33 %exitcond = icmp eq i32 %lftr.wideiv, %n 34 br i1 %exitcond, label %for.end, label %for.body 35 36for.end: ; preds = %for.body, %entry 37 %sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ] 38 ret i32 %sum.0.lcssa 39} 40 41 42