1 ; RUN: opt -S -loop-reroll %s | FileCheck %s 2 target triple = "aarch64--linux-gnu" 3 @buf = global [16 x i8] c"\0A\0A\0A\0A\0A\0A\0A\0A\0A\0A\0A\0A\0A\0A\0A\0A", align 1 4 5 define i32 @test1(i32 %len, i8* nocapture readonly %buf) #0 { 6 entry: 7 %cmp.13 = icmp sgt i32 %len, 1 8 br i1 %cmp.13, label %while.body.lr.ph, label %while.end 9 10 while.body.lr.ph: ; preds = %entry 11 br label %while.body 12 13 while.body: 14 ;CHECK-LABEL: while.body: 15 ;CHECK-NEXT: %indvar = phi i32 [ %indvar.next, %while.body ], [ 0, %while.body.lr.ph ] 16 ;CHECK-NEXT: %sum4.015 = phi i64 [ 0, %while.body.lr.ph ], [ %add, %while.body ] 17 ;CHECK-NOT: %sub5 = add nsw i32 %len.addr.014, -1 18 ;CHECK-NOT: %sub5 = add nsw i32 %len.addr.014, -2 19 ;CHECK: br i1 %exitcond, label %while.cond.while.end_crit_edge, label %while.body 20 21 %sum4.015 = phi i64 [ 0, %while.body.lr.ph ], [ %add4, %while.body ] 22 %len.addr.014 = phi i32 [ %len, %while.body.lr.ph ], [ %sub5, %while.body ] 23 %idxprom = sext i32 %len.addr.014 to i64 24 %arrayidx = getelementptr inbounds i8, i8* %buf, i64 %idxprom 25 %0 = load i8, i8* %arrayidx, align 1 26 %conv = zext i8 %0 to i64 27 %add = add i64 %conv, %sum4.015 28 %sub = add nsw i32 %len.addr.014, -1 29 %idxprom1 = sext i32 %sub to i64 30 %arrayidx2 = getelementptr inbounds i8, i8* %buf, i64 %idxprom1 31 %1 = load i8, i8* %arrayidx2, align 1 32 %conv3 = zext i8 %1 to i64 33 %add4 = add i64 %add, %conv3 34 %sub5 = add nsw i32 %len.addr.014, -2 35 %cmp = icmp sgt i32 %sub5, 1 36 br i1 %cmp, label %while.body, label %while.cond.while.end_crit_edge 37 38 while.cond.while.end_crit_edge: ; preds = %while.body 39 %add4.lcssa = phi i64 [ %add4, %while.body ] 40 %phitmp = trunc i64 %add4.lcssa to i32 41 br label %while.end 42 43 while.end: ; preds = %while.cond.while.end_crit_edge, %entry 44 %sum4.0.lcssa = phi i32 [ %phitmp, %while.cond.while.end_crit_edge ], [ 0, %entry ] 45 ret i32 %sum4.0.lcssa 46 unreachable 47 } 48 49
