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121
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1 # RUN: llc -march=amdgcn -verify-machineinstrs -run-pass si-fix-wwm-liveness -o - %s | FileCheck %s
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2 #CHECK: %exec = EXIT_WWM killed %19, implicit %21
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3
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4 ---
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5 name: test_wwm_liveness
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6 alignment: 0
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7 exposesReturnsTwice: false
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8 legalized: false
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9 regBankSelected: false
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10 selected: false
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11 tracksRegLiveness: true
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12 registers:
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13 - { id: 0, class: sreg_64, preferred-register: '' }
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14 - { id: 1, class: sgpr_32, preferred-register: '' }
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15 - { id: 2, class: sgpr_32, preferred-register: '' }
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16 - { id: 3, class: vgpr_32, preferred-register: '' }
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17 - { id: 4, class: vgpr_32, preferred-register: '' }
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18 - { id: 5, class: vgpr_32, preferred-register: '' }
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19 - { id: 6, class: vgpr_32, preferred-register: '' }
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20 - { id: 7, class: vgpr_32, preferred-register: '' }
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21 - { id: 8, class: sreg_64, preferred-register: '%vcc' }
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22 - { id: 9, class: sreg_64, preferred-register: '' }
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23 - { id: 10, class: sreg_32_xm0, preferred-register: '' }
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24 - { id: 11, class: sreg_64, preferred-register: '' }
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25 - { id: 12, class: sreg_32_xm0, preferred-register: '' }
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26 - { id: 13, class: sreg_32_xm0, preferred-register: '' }
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27 - { id: 14, class: sreg_32_xm0, preferred-register: '' }
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28 - { id: 15, class: sreg_128, preferred-register: '' }
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29 - { id: 16, class: vgpr_32, preferred-register: '' }
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30 - { id: 17, class: vgpr_32, preferred-register: '' }
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31 - { id: 18, class: vgpr_32, preferred-register: '' }
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32 - { id: 19, class: sreg_64, preferred-register: '' }
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33 - { id: 20, class: sreg_64, preferred-register: '' }
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34 - { id: 21, class: vgpr_32, preferred-register: '' }
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35 - { id: 22, class: sreg_64, preferred-register: '' }
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36 - { id: 23, class: sreg_64, preferred-register: '' }
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37 liveins:
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38 body: |
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39 bb.0:
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40 successors: %bb.1(0x40000000), %bb.2(0x40000000)
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41
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42 %21 = V_MOV_B32_e32 0, implicit %exec
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43 %5 = V_MBCNT_LO_U32_B32_e64 -1, 0, implicit %exec
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44 %6 = V_MBCNT_HI_U32_B32_e32 -1, killed %5, implicit %exec
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45 %8 = V_CMP_GT_U32_e64 32, killed %6, implicit %exec
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46 %22 = COPY %exec, implicit-def %exec
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47 %23 = S_AND_B64 %22, %8, implicit-def dead %scc
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48 %0 = S_XOR_B64 %23, %22, implicit-def dead %scc
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49 %exec = S_MOV_B64_term killed %23
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50 SI_MASK_BRANCH %bb.2, implicit %exec
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51 S_BRANCH %bb.1
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52
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53 bb.1:
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54 successors: %bb.2(0x80000000)
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55
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56 %13 = S_MOV_B32 61440
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57 %14 = S_MOV_B32 -1
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58 %15 = REG_SEQUENCE undef %12, 1, undef %10, 2, killed %14, 3, killed %13, 4
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59 %19 = COPY %exec
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60 %exec = S_MOV_B64 -1
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61 %16 = BUFFER_LOAD_DWORD_OFFSET %15, 0, 0, 0, 0, 0, implicit %exec :: (volatile load 4)
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62 %17 = V_ADD_F32_e32 1065353216, killed %16, implicit %exec
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63 %exec = EXIT_WWM killed %19
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64 %21 = V_MOV_B32_e32 1, implicit %exec
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65 early-clobber %18 = WWM killed %17, implicit %exec
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66 BUFFER_STORE_DWORD_OFFSET killed %18, killed %15, 0, 0, 0, 0, 0, implicit %exec :: (store 4)
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67
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68 bb.2:
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69 %exec = S_OR_B64 %exec, killed %0, implicit-def %scc
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70 %vgpr0 = COPY killed %21
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71 SI_RETURN_TO_EPILOG killed %vgpr0
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72
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73 ...
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