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annotate test/Transforms/PlaceSafepoints/split-backedge.ll @ 100:7d135dc70f03 LLVM 3.9

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LLVM 3.9
author Miyagi Mitsuki <e135756@ie.u-ryukyu.ac.jp>
date Tue, 26 Jan 2016 22:53:40 +0900
parents afa8332a0e37
children 1172e4bd9c6f
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1 ;; A very basic test to make sure that splitting the backedge keeps working
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2 ;; RUN: opt -place-safepoints -spp-split-backedge=1 -S %s | FileCheck %s
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3
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4 define void @test(i32, i1 %cond) gc "statepoint-example" {
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5 ; CHECK-LABEL: @test
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6 ; CHECK-LABEL: loop.loop_crit_edge
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7 ; CHECK: gc.statepoint
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8 ; CHECK-NEXT: br label %loop
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9 entry:
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10 br label %loop
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11
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12 loop:
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13 br i1 %cond, label %loop, label %exit
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14
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15 exit:
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16 ret void
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17 }
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18
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19 ; Test for the case where a single conditional branch jumps to two
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20 ; different loop header blocks. Since we're currently using LoopSimplfy
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21 ; this doesn't hit the interesting case, but once we remove that, we need
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22 ; to be sure this keeps working.
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23 define void @test2(i32, i1 %cond) gc "statepoint-example" {
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24 ; CHECK-LABEL: @test2
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25 ; CHECK-LABEL: loop2.loop2_crit_edge:
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26 ; CHECK: gc.statepoint
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27 ; CHECK-NEXT: br label %loop2
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28 ; CHECK-LABEL: loop2.loop_crit_edge:
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29 ; CHECK: gc.statepoint
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30 ; CHECK-NEXT: br label %loop
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31 entry:
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32 br label %loop
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33
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34 loop:
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35 br label %loop2
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36
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37 loop2:
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38 br i1 %cond, label %loop, label %loop2
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39 }
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40
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41 declare void @do_safepoint()
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42 define void @gc.safepoint_poll() {
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43 entry:
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44 call void @do_safepoint()
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45 ret void
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46 }