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150
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1 ; REQUIRES: asserts
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2 ; RUN: opt < %s -S -loop-unroll -unroll-runtime=true -unroll-allow-remainder=true -unroll-count=4
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3
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4 ; Make sure that the runtime unroll does not break with a non-exiting latch.
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5 define i32 @test(i32* %a, i32* %b, i32* %c, i64 %n) {
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6 entry:
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7 br label %while.cond
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8
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9 while.cond: ; preds = %while.body, %entry
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10 %i.0 = phi i64 [ 0, %entry ], [ %inc, %while.body ]
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11 %cmp = icmp slt i64 %i.0, %n
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12 br i1 %cmp, label %while.body, label %while.end
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13
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14 while.body: ; preds = %while.cond
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15 %arrayidx = getelementptr inbounds i32, i32* %b, i64 %i.0
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16 %0 = load i32, i32* %arrayidx
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17 %arrayidx1 = getelementptr inbounds i32, i32* %c, i64 %i.0
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18 %1 = load i32, i32* %arrayidx1
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19 %mul = mul nsw i32 %0, %1
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20 %arrayidx2 = getelementptr inbounds i32, i32* %a, i64 %i.0
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21 store i32 %mul, i32* %arrayidx2
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22 %inc = add nsw i64 %i.0, 1
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23 br label %while.cond
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24
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25 while.end: ; preds = %while.cond
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26 ret i32 0
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27 }
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