1 # RUN: llc -march=amdgcn -run-pass simple-register-coalescing -o - %s | FileCheck --check-prefix=GCN %s 2 # 3 # See bug http://llvm.org/PR33524 for details of the problem being checked here 4 # This test will provoke a subrange join (see annotations below) during simple register coalescing 5 # Without a fix for PR33524 this causes an unreachable in SubRange Join 6 # 7 # GCN-DAG: undef %[[REG0:[0-9]+]].sub0:sgpr_64 = COPY $sgpr5 8 # GCN-DAG: undef %[[REG1:[0-9]+]].sub0:sgpr_64 = COPY $sgpr2 9 # GCN-DAG: %[[REG0]].sub1:sgpr_64 = S_MOV_B32 1 10 # GCN-DAG: %[[REG1]].sub1:sgpr_64 = S_MOV_B32 1 11 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 void 15 } 16 17 ... 18 --- 19 name: regcoal-subrange-join 20 tracksRegLiveness: true 21 registers: 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: sreg_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: sreg_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: sreg_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 } 84 liveins: 85 - { reg: '$sgpr2', virtual-reg: '%12' } 86 - { reg: '$sgpr5', virtual-reg: '%15' } 87 body: | 88 bb.0: 89 liveins: $sgpr2, $sgpr5 90 91 %15 = COPY killed $sgpr5 92 %12 = COPY killed $sgpr2 93 %17 = S_MOV_B32 1 94 undef %18.sub1 = COPY %17 95 %0 = COPY %18 96 %0.sub0 = COPY killed %12 97 %21 = COPY killed %18 98 %21.sub0 = COPY killed %15 99 %22 = S_LOAD_DWORD_IMM killed %21, 2, 0 100 %23 = S_MOV_B32 491436 101 undef %24.sub0 = COPY killed %22 102 %24.sub1 = COPY killed %23 103 %25 = S_LOAD_DWORDX4_IMM killed %24, 0, 0 104 %1 = COPY killed %25 105 %26 = S_LOAD_DWORDX2_IMM %0, 2, 0 106 dead %27 = S_LOAD_DWORD_IMM killed %26, 0, 0 107 S_CBRANCH_SCC0 %bb.1, implicit undef $scc 108 109 bb.5: 110 %58 = COPY killed %1 111 %59 = COPY killed %17 112 S_BRANCH %bb.2 113 114 bb.1: 115 %30 = V_MOV_B32_e32 1036831949, implicit $exec 116 %31 = V_ADD_F32_e32 %30, %1.sub3, implicit $exec 117 %33 = V_ADD_F32_e32 %30, %1.sub2, implicit $exec 118 %35 = V_ADD_F32_e32 %30, %1.sub1, implicit $exec 119 %37 = V_ADD_F32_e32 killed %30, killed %1.sub0, implicit $exec 120 undef %56.sub0 = COPY killed %37 121 %56.sub1 = COPY killed %35 122 %56.sub2 = COPY killed %33 123 %56.sub3 = COPY killed %31 124 %28 = S_MOV_B32 0 125 %2 = COPY killed %56 126 %58 = COPY killed %2 127 %59 = COPY killed %28 128 129 bb.2: 130 %4 = COPY killed %59 131 %3 = COPY killed %58 132 %39 = S_LOAD_DWORDX2_IMM killed %0, 6, 0 133 %40 = S_LOAD_DWORD_IMM killed %39, 0, 0 134 %43 = V_MOV_B32_e32 -1102263091, implicit $exec 135 %60 = COPY killed %4 136 %61 = COPY killed %3 137 138 bb.3: 139 successors: %bb.3, %bb.4 140 141 %7 = COPY killed %61 142 %6 = COPY killed %60 143 %8 = S_ADD_I32 killed %6, 1, implicit-def dead $scc 144 %44 = V_ADD_F32_e32 %43, %7.sub3, implicit $exec 145 %46 = V_ADD_F32_e32 %43, %7.sub2, implicit $exec 146 %48 = V_ADD_F32_e32 %43, %7.sub1, implicit $exec 147 %50 = V_ADD_F32_e32 %43, killed %7.sub0, implicit $exec 148 undef %57.sub0 = COPY killed %50 149 %57.sub1 = COPY killed %48 150 %57.sub2 = COPY %46 151 %57.sub3 = COPY killed %44 152 S_CMP_LT_I32 %8, %40, implicit-def $scc 153 %60 = COPY killed %8 154 %61 = COPY killed %57 155 S_CBRANCH_SCC1 %bb.3, implicit killed $scc 156 S_BRANCH %bb.4 157 158 bb.4: 159 EXP 32, undef %53, undef %54, killed %46, undef %55, 0, 0, 15, implicit $exec 160 S_ENDPGM 161 162 ... 163
