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120
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1 # RUN: llc -march=hexagon -verify-machineinstrs -run-pass branch-folder -o - %s | FileCheck %s
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2
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3 # CHECK-LABEL: name: fred
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4
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5 --- |
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6 define void @fred() { ret void }
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7
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8 ...
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9 ---
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10
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11 name: fred
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12 tracksRegLiveness: true
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13
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14 body: |
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15 bb.0:
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121
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16 liveins: %p0:0x1, %p2, %r0
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120
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17 successors: %bb.1, %bb.2
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18 J2_jumpt killed %p2, %bb.1, implicit-def %pc
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19 J2_jump %bb.2, implicit-def %pc
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20
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21 bb.1:
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121
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22 liveins: %p0:0x1, %r0, %r19
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120
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23 successors: %bb.3
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24 %r2 = A2_tfrsi 4
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25 %r1 = COPY %r19
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26 %r0 = S2_asl_r_r killed %r0, killed %r2
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27 %r0 = A2_asrh killed %r0
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28 J2_jump %bb.3, implicit-def %pc
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29
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30 bb.2:
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121
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31 liveins: %p0:0x1, %r0, %r18
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120
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32 successors: %bb.3
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33 %r2 = A2_tfrsi 5
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34 %r1 = L2_loadrh_io %r18, 0
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35 %r0 = S2_asl_r_r killed %r0, killed %r2
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36 %r0 = A2_asrh killed %r0
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37
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38 bb.3:
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39 ; A live-in register without subregs, but with a lane mask that is not ~0
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40 ; is not recognized by LivePhysRegs. Branch folding exposes this problem
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41 ; (through tail merging).
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42 ;
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43 ; CHECK: bb.3:
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44 ; CHECK: liveins:{{.*}}%p0
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45 ; CHECK: %r0 = S2_asl_r_r killed %r0, killed %r2
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46 ; CHECK: %r0 = A2_asrh killed %r0
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47 ; CHECK: %r0 = C2_cmoveit killed %p0, 1
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48 ; CHECK: J2_jumpr %r31, implicit-def %pc, implicit %r0
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49 ;
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50 liveins: %p0:0x1
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51 %r0 = C2_cmoveit killed %p0, 1
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52 J2_jumpr %r31, implicit-def %pc, implicit %r0
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53 ...
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54
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55
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