1 ; RUN: opt < %s -S -mtriple=powerpc64-unknown-linux-gnu -mcpu=a2 -loop-unroll | FileCheck %s 2 define void @unroll_opt_for_size() nounwind optsize { 3 entry: 4 br label %loop 5 6 loop: 7 %iv = phi i32 [ 0, %entry ], [ %inc, %loop ] 8 %inc = add i32 %iv, 1 9 %exitcnd = icmp uge i32 %inc, 1024 10 br i1 %exitcnd, label %exit, label %loop 11 12 exit: 13 ret void 14 } 15 16 ; CHECK-LABEL: @unroll_opt_for_size 17 ; CHECK: add 18 ; CHECK-NEXT: add 19 ; CHECK-NEXT: add 20 ; CHECK: icmp 21 22 define i32 @test(i32* nocapture %a, i32 %n) nounwind uwtable readonly { 23 entry: 24 %cmp1 = icmp eq i32 %n, 0 25 br i1 %cmp1, label %for.end, label %for.body 26 27 for.body: ; preds = %for.body, %entry 28 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ] 29 %sum.02 = phi i32 [ %add, %for.body ], [ 0, %entry ] 30 %arrayidx = getelementptr inbounds i32* %a, i64 %indvars.iv 31 %0 = load i32* %arrayidx, align 4 32 %add = add nsw i32 %0, %sum.02 33 %indvars.iv.next = add i64 %indvars.iv, 1 34 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 35 %exitcond = icmp eq i32 %lftr.wideiv, %n 36 br i1 %exitcond, label %for.end, label %for.body 37 38 for.end: ; preds = %for.body, %entry 39 %sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ] 40 ret i32 %sum.0.lcssa 41 } 42 43 ; CHECK-LABEL: @test 44 ; CHECK: unr.cmp{{.*}}: 45 ; CHECK: for.body.unr{{.*}}: 46 ; CHECK: for.body: 47 ; CHECK: br i1 %exitcond.7, label %for.end.loopexit{{.*}}, label %for.body 48 49
