1 ; RUN: opt < %s -S -loop-unroll -unroll-runtime -unroll-count=4 | FileCheck %s 2 3 ; This tests that setting the unroll count works 4 5 ; CHECK: unr.cmp: 6 ; CHECK: for.body.unr: 7 ; CHECK: for.body: 8 ; CHECK: br i1 %exitcond.3, label %for.end.loopexit{{.*}}, label %for.body 9 ; CHECK-NOT: br i1 %exitcond.4, label %for.end.loopexit{{.*}}, label %for.body 10 11 define i32 @test(i32* nocapture %a, i32 %n) nounwind uwtable readonly { 12 entry: 13 %cmp1 = icmp eq i32 %n, 0 14 br i1 %cmp1, label %for.end, label %for.body 15 16 for.body: ; preds = %for.body, %entry 17 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ] 18 %sum.02 = phi i32 [ %add, %for.body ], [ 0, %entry ] 19 %arrayidx = getelementptr inbounds i32* %a, i64 %indvars.iv 20 %0 = load i32* %arrayidx, align 4 21 %add = add nsw i32 %0, %sum.02 22 %indvars.iv.next = add i64 %indvars.iv, 1 23 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 24 %exitcond = icmp eq i32 %lftr.wideiv, %n 25 br i1 %exitcond, label %for.end, label %for.body 26 27 for.end: ; preds = %for.body, %entry 28 %sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ] 29 ret i32 %sum.0.lcssa 30 } 31
