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annotate llvm/test/Transforms/LoopUnroll/peel-loop-negative.ll @ 201:a96fbbdf2d0f

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Fri, 04 Jun 2021 21:07:06 +0900
parents 0572611fdcc8
children 1f2b6ac9f198
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1 ; RUN: opt < %s -S -loop-unroll -unroll-threshold=800 -unroll-peel-max-count=0 | FileCheck %s
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2
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3 ; We should not peel this loop even though we can, because the max count is set
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4 ; to zero.
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5 define i32 @invariant_backedge_neg_1(i32 %a, i32 %b) {
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6 ; CHECK-LABEL: @invariant_backedge_neg_1
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Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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7 ; CHECK-NOT: loop.peel{{.*}}:
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8 ; CHECK: loop:
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9 ; CHECK: %i = phi
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10 ; CHECK: %sum = phi
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11 ; CHECK: %plus = phi
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12 entry:
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13 br label %loop
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14
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15 loop:
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16 %i = phi i32 [ 0, %entry ], [ %inc, %loop ]
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17 %sum = phi i32 [ 0, %entry ], [ %incsum, %loop ]
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18 %plus = phi i32 [ %a, %entry ], [ %b, %loop ]
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19
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20 %incsum = add i32 %sum, %plus
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21 %inc = add i32 %i, 1
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22 %cmp = icmp slt i32 %i, 1000
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23
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24 br i1 %cmp, label %loop, label %exit
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25
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26 exit:
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27 ret i32 %sum
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28 }