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1# RUN: llc -mtriple=amdgcn -run-pass register-coalescer -o - %s | FileCheck --check-prefix=GCN %s2#3# See bug http://llvm.org/PR33524 for details of the problem being checked here4# This test will provoke a subrange join (see annotations below) during register coalescing5# Without a fix for PR33524 this causes an unreachable in SubRange Join6#7# GCN-DAG: undef %[[REG0:[0-9]+]].sub0:sgpr_64 = COPY $sgpr58# GCN-DAG: undef %[[REG1:[0-9]+]].sub0:sgpr_64 = COPY $sgpr29# GCN-DAG: %[[REG0]].sub1:sgpr_64 = S_MOV_B32 110# GCN-DAG: %[[REG1]].sub1:sgpr_64 = S_MOV_B32 111 12--- |13 define amdgpu_vs void @regcoal-subrange-join(i32 inreg %arg, i32 inreg %arg1, i32 inreg %arg2, i32 inreg %arg3, i32 inreg %arg4, i32 inreg %arg5, i32 %arg6) local_unnamed_addr #0 {14 ret void15 }16 17...18---19name: regcoal-subrange-join20tracksRegLiveness: true21registers:22 - { id: 0, class: sreg_64 }23 - { id: 1, class: vreg_128 }24 - { id: 2, class: vreg_128 }25 - { id: 3, class: vreg_128 }26 - { id: 4, class: sreg_32_xm0 }27 - { id: 5, class: sreg_32_xm0 }28 - { id: 6, class: sreg_32_xm0, preferred-register: '%8' }29 - { id: 7, class: vreg_128 }30 - { id: 8, class: sreg_32_xm0, preferred-register: '%6' }31 - { id: 9, class: vreg_128 }32 - { id: 10, class: sgpr_32 }33 - { id: 11, class: sgpr_32 }34 - { id: 12, class: sgpr_32 }35 - { id: 13, class: sgpr_32 }36 - { id: 14, class: sgpr_32 }37 - { id: 15, class: sgpr_32 }38 - { id: 16, class: vgpr_32 }39 - { id: 17, class: sreg_32_xm0 }40 - { id: 18, class: sreg_64 }41 - { id: 19, class: sreg_32_xm0 }42 - { id: 20, class: sreg_32_xm0 }43 - { id: 21, class: sreg_64 }44 - { id: 22, class: sreg_32_xm0_xexec }45 - { id: 23, class: sreg_32_xm0 }46 - { id: 24, class: sreg_64_xexec }47 - { id: 25, class: sgpr_128 }48 - { id: 26, class: sreg_64_xexec }49 - { id: 27, class: sreg_32_xm0_xexec }50 - { id: 28, class: sreg_32_xm0 }51 - { id: 29, class: vgpr_32 }52 - { id: 30, class: vgpr_32 }53 - { id: 31, class: vgpr_32 }54 - { id: 32, class: vgpr_32 }55 - { id: 33, class: vgpr_32 }56 - { id: 34, class: vgpr_32 }57 - { id: 35, class: vgpr_32 }58 - { id: 36, class: vgpr_32 }59 - { id: 37, class: vgpr_32 }60 - { id: 38, class: sgpr_128 }61 - { id: 39, class: sreg_64_xexec }62 - { id: 40, class: sreg_32_xm0_xexec }63 - { id: 41, class: sreg_32_xm0 }64 - { id: 42, class: vgpr_32 }65 - { id: 43, class: vgpr_32 }66 - { id: 44, class: vgpr_32 }67 - { id: 45, class: vgpr_32 }68 - { id: 46, class: vgpr_32 }69 - { id: 47, class: vgpr_32 }70 - { id: 48, class: vgpr_32 }71 - { id: 49, class: vgpr_32 }72 - { id: 50, class: vgpr_32 }73 - { id: 51, class: sgpr_128 }74 - { id: 52, class: vgpr_32 }75 - { id: 53, class: vgpr_32 }76 - { id: 54, class: vgpr_32 }77 - { id: 55, class: vgpr_32 }78 - { id: 56, class: vreg_128 }79 - { id: 57, class: vreg_128 }80 - { id: 58, class: vreg_128 }81 - { id: 59, class: sreg_32_xm0 }82 - { id: 60, class: sreg_32_xm0 }83 - { id: 61, class: vreg_128 }84liveins:85 - { reg: '$sgpr2', virtual-reg: '%12' }86 - { reg: '$sgpr5', virtual-reg: '%15' }87body: |88 bb.0:89 liveins: $sgpr2, $sgpr590 91 %15 = COPY killed $sgpr592 %12 = COPY killed $sgpr293 %17 = S_MOV_B32 194 undef %18.sub1 = COPY %1795 %0 = COPY %1896 %0.sub0 = COPY killed %1297 %21 = COPY killed %1898 %21.sub0 = COPY killed %1599 %22 = S_LOAD_DWORD_IMM killed %21, 2, 0100 %23 = S_MOV_B32 491436101 undef %24.sub0 = COPY killed %22102 %24.sub1 = COPY killed %23103 %25 = S_LOAD_DWORDX4_IMM killed %24, 0, 0104 %1 = COPY killed %25105 %26 = S_LOAD_DWORDX2_IMM %0, 2, 0106 dead %27 = S_LOAD_DWORD_IMM killed %26, 0, 0107 S_CBRANCH_SCC0 %bb.1, implicit undef $scc108 109 bb.5:110 %58 = COPY killed %1111 %59 = COPY killed %17112 S_BRANCH %bb.2113 114 bb.1:115 %30 = V_MOV_B32_e32 1036831949, implicit $exec116 %31 = nofpexcept V_ADD_F32_e32 %30, %1.sub3, implicit $mode, implicit $exec117 %33 = nofpexcept V_ADD_F32_e32 %30, %1.sub2, implicit $mode, implicit $exec118 %35 = nofpexcept V_ADD_F32_e32 %30, %1.sub1, implicit $mode, implicit $exec119 %37 = nofpexcept V_ADD_F32_e32 killed %30, killed %1.sub0, implicit $mode, implicit $exec120 undef %56.sub0 = COPY killed %37121 %56.sub1 = COPY killed %35122 %56.sub2 = COPY killed %33123 %56.sub3 = COPY killed %31124 %28 = S_MOV_B32 0125 %2 = COPY killed %56126 %58 = COPY killed %2127 %59 = COPY killed %28128 129 bb.2:130 %4 = COPY killed %59131 %3 = COPY killed %58132 %39 = S_LOAD_DWORDX2_IMM killed %0, 6, 0133 %40 = S_LOAD_DWORD_IMM killed %39, 0, 0134 %43 = V_MOV_B32_e32 -1102263091, implicit $exec135 %60 = COPY killed %4136 %61 = COPY killed %3137 138 bb.3:139 successors: %bb.3, %bb.4140 141 %7 = COPY killed %61142 %6 = COPY killed %60143 %8 = S_ADD_I32 killed %6, 1, implicit-def dead $scc144 %44 = nofpexcept V_ADD_F32_e32 %43, %7.sub3, implicit $mode, implicit $exec145 %46 = nofpexcept V_ADD_F32_e32 %43, %7.sub2, implicit $mode, implicit $exec146 %48 = nofpexcept V_ADD_F32_e32 %43, %7.sub1, implicit $mode, implicit $exec147 %50 = nofpexcept V_ADD_F32_e32 %43, killed %7.sub0, implicit $mode, implicit $exec148 undef %57.sub0 = COPY killed %50149 %57.sub1 = COPY killed %48150 %57.sub2 = COPY %46151 %57.sub3 = COPY killed %44152 S_CMP_LT_I32 %8, %40, implicit-def $scc153 %60 = COPY killed %8154 %61 = COPY killed %57155 S_CBRANCH_SCC1 %bb.3, implicit killed $scc156 S_BRANCH %bb.4157 158 bb.4:159 EXP 32, undef %53, undef %54, killed %46, undef %55, 0, 0, 15, implicit $exec160 S_ENDPGM 0161 162...163