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annotate llvm/test/Transforms/IndVarSimplify/eliminate-exit-no-dl.ll @ 223:5f17cb93ff66 llvm-original

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LLVM13 (2021/7/18)
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Sun, 18 Jul 2021 22:43:00 +0900
parents 1d019706d866
children c4bab56944e8
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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2 ; RUN: opt -indvars -S < %s | FileCheck %s
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3
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4 ; Check the case where one exit has a pointer EC, and the other doesn't.
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5 ; Note that this test case is really really fragile. Removing any
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6 ; instruction in the below causes the result to differ. Note that the lack
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7 ; of a data layout (with pointer size info) is critical to getting a pointer
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8 ; EC returned by SCEV.
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9
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10 @global = external global [0 x i8], align 1
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11
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12 define void @foo() {
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13 ; CHECK-LABEL: @foo(
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14 ; CHECK-NEXT: bb:
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15 ; CHECK-NEXT: br label [[BB3:%.*]]
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16 ; CHECK: bb3:
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17 ; CHECK-NEXT: [[TMP:%.*]] = phi i8* [ [[TMP4:%.*]], [[BB7:%.*]] ], [ getelementptr inbounds ([0 x i8], [0 x i8]* @global, i64 0, i64 2), [[BB:%.*]] ]
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18 ; CHECK-NEXT: [[TMP4]] = getelementptr inbounds i8, i8* [[TMP]], i64 -1
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19 ; CHECK-NEXT: [[TMP6:%.*]] = load i8, i8* [[TMP4]], align 1
223
5f17cb93ff66 LLVM13 (2021/7/18)
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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20 ; CHECK-NEXT: br i1 false, label [[BB7]], label [[BB11:%.*]]
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21 ; CHECK: bb7:
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22 ; CHECK-NEXT: [[TMP8:%.*]] = zext i8 [[TMP6]] to i64
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23 ; CHECK-NEXT: br i1 true, label [[BB11]], label [[BB3]]
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24 ; CHECK: bb11:
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25 ; CHECK-NEXT: ret void
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26 ;
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27 bb:
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28 br label %bb3
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29
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30 bb3: ; preds = %bb7, %bb2
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31 %tmp = phi i8* [ %tmp4, %bb7 ], [ getelementptr inbounds ([0 x i8], [0 x i8]* @global, i64 0, i64 2), %bb ]
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32 %tmp4 = getelementptr inbounds i8, i8* %tmp, i64 -1
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33 %tmp6 = load i8, i8* %tmp4, align 1
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34 %tmp5 = icmp ugt i8* %tmp4, getelementptr inbounds ([0 x i8], [0 x i8]* @global, i64 0, i64 500)
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35 br i1 %tmp5, label %bb7, label %bb11
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36
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37 bb7: ; preds = %bb3
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38 %tmp8 = zext i8 %tmp6 to i64
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39 %tmp10 = icmp eq i16 0, 0
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40 br i1 %tmp10, label %bb11, label %bb3
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41
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42 bb11: ; preds = %bb7, %bb3
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43 ret void
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44 }