1 ; RUN: llc < %s > %t 2 ; PR6283 3 4 ; Tricky coalescer bug: 5 ; After coalescing %RAX with a virtual register, this instruction was rematted: 6 ; 7 ; %EAX<def> = MOV32rr %reg1070<kill> 8 ; 9 ; This instruction silently defined %RAX, and when rematting removed the 10 ; instruction, the live interval for %RAX was not properly updated. The valno 11 ; referred to a deleted instruction and bad things happened. 12 ; 13 ; The fix is to implicitly define %RAX when coalescing: 14 ; 15 ; %EAX<def> = MOV32rr %reg1070<kill>, %RAX<imp-def> 16 ; 17 18 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" 19 target triple = "x86_64-unknown-linux-gnu" 20 21 module asm "\09.ident\09\22GCC: (GNU) 4.5.0 20100212 (experimental) LLVM: 95975\22" 22 23 %0 = type { %"union gimple_statement_d"* } 24 %"BITMAP_WORD[]" = type [2 x i64] 25 %"uchar[]" = type [1 x i8] 26 %"char[]" = type [4 x i8] 27 %"enum dom_state[]" = type [2 x i32] 28 %"int[]" = type [4 x i32] 29 %"struct VEC_basic_block_base" = type { i32, i32, [1 x %"struct basic_block_def"*] } 30 %"struct VEC_basic_block_gc" = type { %"struct VEC_basic_block_base" } 31 %"struct VEC_edge_base" = type { i32, i32, [1 x %"struct edge_def"*] } 32 %"struct VEC_edge_gc" = type { %"struct VEC_edge_base" } 33 %"struct VEC_gimple_base" = type { i32, i32, [1 x %"union gimple_statement_d"*] } 34 %"struct VEC_gimple_gc" = type { %"struct VEC_gimple_base" } 35 %"struct VEC_iv_cand_p_base" = type { i32, i32, [1 x %"struct iv_cand"*] } 36 %"struct VEC_iv_cand_p_heap" = type { %"struct VEC_iv_cand_p_base" } 37 %"struct VEC_iv_use_p_base" = type { i32, i32, [1 x %"struct iv_use"*] } 38 %"struct VEC_iv_use_p_heap" = type { %"struct VEC_iv_use_p_base" } 39 %"struct VEC_loop_p_base" = type { i32, i32, [1 x %"struct loop"*] } 40 %"struct VEC_loop_p_gc" = type { %"struct VEC_loop_p_base" } 41 %"struct VEC_rtx_base" = type { i32, i32, [1 x %"struct rtx_def"*] } 42 %"struct VEC_rtx_gc" = type { %"struct VEC_rtx_base" } 43 %"struct VEC_tree_base" = type { i32, i32, [1 x %"union tree_node"*] } 44 %"struct VEC_tree_gc" = type { %"struct VEC_tree_base" } 45 %"struct _obstack_chunk" = type { i8*, %"struct _obstack_chunk"*, %"char[]" } 46 %"struct basic_block_def" = type { %"struct VEC_edge_gc"*, %"struct VEC_edge_gc"*, i8*, %"struct loop"*, [2 x %"struct et_node"*], %"struct basic_block_def"*, %"struct basic_block_def"*, %"union basic_block_il_dependent", i64, i32, i32, i32, i32, i32 } 47 %"struct bitmap_element" = type { %"struct bitmap_element"*, %"struct bitmap_element"*, i32, %"BITMAP_WORD[]" } 48 %"struct bitmap_head_def" = type { %"struct bitmap_element"*, %"struct bitmap_element"*, i32, %"struct bitmap_obstack"* } 49 %"struct bitmap_obstack" = type { %"struct bitmap_element"*, %"struct bitmap_head_def"*, %"struct obstack" } 50 %"struct block_symbol" = type { [3 x %"union rtunion"], %"struct object_block"*, i64 } 51 %"struct comp_cost" = type { i32, i32 } 52 %"struct control_flow_graph" = type { %"struct basic_block_def"*, %"struct basic_block_def"*, %"struct VEC_basic_block_gc"*, i32, i32, i32, %"struct VEC_basic_block_gc"*, i32, %"enum dom_state[]", %"enum dom_state[]", i32, i32 } 53 %"struct cost_pair" = type { %"struct iv_cand"*, %"struct comp_cost", %"struct bitmap_head_def"*, %"union tree_node"* } 54 %"struct def_optype_d" = type { %"struct def_optype_d"*, %"union tree_node"** } 55 %"struct double_int" = type { i64, i64 } 56 %"struct edge_def" = type { %"struct basic_block_def"*, %"struct basic_block_def"*, %"union edge_def_insns", i8*, %"union tree_node"*, i32, i32, i32, i32, i64 } 57 %"struct eh_status" = type opaque 58 %"struct et_node" = type opaque 59 %"struct function" = type { %"struct eh_status"*, %"struct control_flow_graph"*, %"struct gimple_seq_d"*, %"struct gimple_df"*, %"struct loops"*, %"struct htab"*, %"union tree_node"*, %"union tree_node"*, %"union tree_node"*, %"union tree_node"*, %"struct machine_function"*, %"struct language_function"*, %"struct htab"*, i32, i32, i32, i32, i32, i32, i8*, i8, i8, i8, i8 } 60 %"struct gimple_bb_info" = type { %"struct gimple_seq_d"*, %"struct gimple_seq_d"* } 61 %"struct gimple_df" = type { %"struct htab"*, %"struct VEC_gimple_gc"*, %"struct VEC_tree_gc"*, %"union tree_node"*, %"struct pt_solution", %"struct pt_solution", %"struct pointer_map_t"*, %"union tree_node"*, %"struct htab"*, %"struct bitmap_head_def"*, i8, %"struct ssa_operands" } 62 %"struct gimple_seq_d" = type { %"struct gimple_seq_node_d"*, %"struct gimple_seq_node_d"*, %"struct gimple_seq_d"* } 63 %"struct gimple_seq_node_d" = type { %"union gimple_statement_d"*, %"struct gimple_seq_node_d"*, %"struct gimple_seq_node_d"* } 64 %"struct gimple_statement_base" = type { i8, i8, i16, i32, i32, i32, %"struct basic_block_def"*, %"union tree_node"* } 65 %"struct phi_arg_d[]" = type [1 x %"struct phi_arg_d"] 66 %"struct gimple_statement_phi" = type { %"struct gimple_statement_base", i32, i32, %"union tree_node"*, %"struct phi_arg_d[]" } 67 %"struct htab" = type { i32 (i8*)*, i32 (i8*, i8*)*, void (i8*)*, i8**, i64, i64, i64, i32, i32, i8* (i64, i64)*, void (i8*)*, i8*, i8* (i8*, i64, i64)*, void (i8*, i8*)*, i32 } 68 %"struct iv" = type { %"union tree_node"*, %"union tree_node"*, %"union tree_node"*, %"union tree_node"*, i8, i8, i32 } 69 %"struct iv_cand" = type { i32, i8, i32, %"union gimple_statement_d"*, %"union tree_node"*, %"union tree_node"*, %"struct iv"*, i32, i32, %"struct iv_use"*, %"struct bitmap_head_def"* } 70 %"struct iv_use" = type { i32, i32, %"struct iv"*, %"union gimple_statement_d"*, %"union tree_node"**, %"struct bitmap_head_def"*, i32, %"struct cost_pair"*, %"struct iv_cand"* } 71 %"struct ivopts_data" = type { %"struct loop"*, %"struct pointer_map_t"*, i32, i32, %"struct version_info"*, %"struct bitmap_head_def"*, %"struct VEC_iv_use_p_heap"*, %"struct VEC_iv_cand_p_heap"*, %"struct bitmap_head_def"*, i32, i8, i8 } 72 %"struct lang_decl" = type opaque 73 %"struct language_function" = type opaque 74 %"struct loop" = type { i32, i32, %"struct basic_block_def"*, %"struct basic_block_def"*, %"struct comp_cost", i32, i32, %"struct VEC_loop_p_gc"*, %"struct loop"*, %"struct loop"*, i8*, %"union tree_node"*, %"struct double_int", %"struct double_int", i8, i8, i32, %"struct nb_iter_bound"*, %"struct loop_exit"*, i8, %"union tree_node"* } 75 %"struct loop_exit" = type { %"struct edge_def"*, %"struct loop_exit"*, %"struct loop_exit"*, %"struct loop_exit"* } 76 %"struct loops" = type { i32, %"struct VEC_loop_p_gc"*, %"struct htab"*, %"struct loop"* } 77 %"struct machine_cfa_state" = type { %"struct rtx_def"*, i64 } 78 %"struct machine_function" = type { %"struct stack_local_entry"*, i8*, i32, i32, %"int[]", i32, %"struct machine_cfa_state", i32, i8 } 79 %"struct nb_iter_bound" = type { %"union gimple_statement_d"*, %"struct double_int", i8, %"struct nb_iter_bound"* } 80 %"struct object_block" = type { %"union section"*, i32, i64, %"struct VEC_rtx_gc"*, %"struct VEC_rtx_gc"* } 81 %"struct obstack" = type { i64, %"struct _obstack_chunk"*, i8*, i8*, i8*, i64, i32, %"struct _obstack_chunk"* (i8*, i64)*, void (i8*, %"struct _obstack_chunk"*)*, i8*, i8 } 82 %"struct phi_arg_d" = type { %"struct ssa_use_operand_d", %"union tree_node"*, i32 } 83 %"struct pointer_map_t" = type opaque 84 %"struct pt_solution" = type { i8, %"struct bitmap_head_def"* } 85 %"struct rtx_def" = type { i16, i8, i8, %"union u" } 86 %"struct section_common" = type { i32 } 87 %"struct ssa_operand_memory_d" = type { %"struct ssa_operand_memory_d"*, %"uchar[]" } 88 %"struct ssa_operands" = type { %"struct ssa_operand_memory_d"*, i32, i32, i8, %"struct def_optype_d"*, %"struct use_optype_d"* } 89 %"struct ssa_use_operand_d" = type { %"struct ssa_use_operand_d"*, %"struct ssa_use_operand_d"*, %0, %"union tree_node"** } 90 %"struct stack_local_entry" = type opaque 91 %"struct tree_base" = type <{ i16, i8, i8, i8, [2 x i8], i8 }> 92 %"struct tree_common" = type { %"struct tree_base", %"union tree_node"*, %"union tree_node"* } 93 %"struct tree_decl_common" = type { %"struct tree_decl_minimal", %"union tree_node"*, i8, i8, i8, i8, i8, i32, %"union tree_node"*, %"union tree_node"*, %"union tree_node"*, %"union tree_node"*, %"struct lang_decl"* } 94 %"struct tree_decl_minimal" = type { %"struct tree_common", i32, i32, %"union tree_node"*, %"union tree_node"* } 95 %"struct tree_decl_non_common" = type { %"struct tree_decl_with_vis", %"union tree_node"*, %"union tree_node"*, %"union tree_node"*, %"union tree_node"* } 96 %"struct tree_decl_with_rtl" = type { %"struct tree_decl_common", %"struct rtx_def"* } 97 %"struct tree_decl_with_vis" = type { %"struct tree_decl_with_rtl", %"union tree_node"*, %"union tree_node"*, %"union tree_node"*, i8, i8, i8 } 98 %"struct tree_function_decl" = type { %"struct tree_decl_non_common", %"struct function"*, %"union tree_node"*, %"union tree_node"*, %"union tree_node"*, i16, i8, i8 } 99 %"struct unnamed_section" = type { %"struct section_common", void (i8*)*, i8*, %"union section"* } 100 %"struct use_optype_d" = type { %"struct use_optype_d"*, %"struct ssa_use_operand_d" } 101 %"struct version_info" = type { %"union tree_node"*, %"struct iv"*, i8, i32, i8 } 102 %"union basic_block_il_dependent" = type { %"struct gimple_bb_info"* } 103 %"union edge_def_insns" = type { %"struct gimple_seq_d"* } 104 %"union gimple_statement_d" = type { %"struct gimple_statement_phi" } 105 %"union rtunion" = type { i8* } 106 %"union section" = type { %"struct unnamed_section" } 107 %"union tree_node" = type { %"struct tree_function_decl" } 108 %"union u" = type { %"struct block_symbol" } 109 110 declare fastcc %"union tree_node"* @get_computation_at(%"struct loop"*, %"struct iv_use"* nocapture, %"struct iv_cand"* nocapture, %"union gimple_statement_d"*) nounwind 111 112 declare fastcc i32 @computation_cost(%"union tree_node"*, i8 zeroext) nounwind 113 114 define fastcc i64 @get_computation_cost_at(%"struct ivopts_data"* %data, %"struct iv_use"* nocapture %use, %"struct iv_cand"* nocapture %cand, i8 zeroext %address_p, %"struct bitmap_head_def"** %depends_on, %"union gimple_statement_d"* %at, i8* %can_autoinc) nounwind { 115 entry: 116 br i1 undef, label %"100", label %"4" 117 118 "4": ; preds = %entry 119 br i1 undef, label %"6", label %"5" 120 121 "5": ; preds = %"4" 122 unreachable 123 124 "6": ; preds = %"4" 125 br i1 undef, label %"8", label %"7" 126 127 "7": ; preds = %"6" 128 unreachable 129 130 "8": ; preds = %"6" 131 br i1 undef, label %"100", label %"10" 132 133 "10": ; preds = %"8" 134 br i1 undef, label %"17", label %"16" 135 136 "16": ; preds = %"10" 137 unreachable 138 139 "17": ; preds = %"10" 140 br i1 undef, label %"19", label %"18" 141 142 "18": ; preds = %"17" 143 unreachable 144 145 "19": ; preds = %"17" 146 br i1 undef, label %"93", label %"20" 147 148 "20": ; preds = %"19" 149 br i1 undef, label %"23", label %"21" 150 151 "21": ; preds = %"20" 152 unreachable 153 154 "23": ; preds = %"20" 155 br i1 undef, label %"100", label %"25" 156 157 "25": ; preds = %"23" 158 br i1 undef, label %"100", label %"26" 159 160 "26": ; preds = %"25" 161 br i1 undef, label %"30", label %"28" 162 163 "28": ; preds = %"26" 164 unreachable 165 166 "30": ; preds = %"26" 167 br i1 undef, label %"59", label %"51" 168 169 "51": ; preds = %"30" 170 br i1 undef, label %"55", label %"52" 171 172 "52": ; preds = %"51" 173 unreachable 174 175 "55": ; preds = %"51" 176 %0 = icmp ugt i32 0, undef ; <i1> [#uses=1] 177 br i1 %0, label %"50.i", label %"9.i" 178 179 "9.i": ; preds = %"55" 180 unreachable 181 182 "50.i": ; preds = %"55" 183 br i1 undef, label %"55.i", label %"54.i" 184 185 "54.i": ; preds = %"50.i" 186 br i1 undef, label %"57.i", label %"55.i" 187 188 "55.i": ; preds = %"54.i", %"50.i" 189 unreachable 190 191 "57.i": ; preds = %"54.i" 192 br label %"63.i" 193 194 "61.i": ; preds = %"63.i" 195 br i1 undef, label %"64.i", label %"62.i" 196 197 "62.i": ; preds = %"61.i" 198 br label %"63.i" 199 200 "63.i": ; preds = %"62.i", %"57.i" 201 br i1 undef, label %"61.i", label %"64.i" 202 203 "64.i": ; preds = %"63.i", %"61.i" 204 unreachable 205 206 "59": ; preds = %"30" 207 br i1 undef, label %"60", label %"82" 208 209 "60": ; preds = %"59" 210 br i1 undef, label %"61", label %"82" 211 212 "61": ; preds = %"60" 213 br i1 undef, label %"62", label %"82" 214 215 "62": ; preds = %"61" 216 br i1 undef, label %"100", label %"63" 217 218 "63": ; preds = %"62" 219 br i1 undef, label %"65", label %"64" 220 221 "64": ; preds = %"63" 222 unreachable 223 224 "65": ; preds = %"63" 225 br i1 undef, label %"66", label %"67" 226 227 "66": ; preds = %"65" 228 unreachable 229 230 "67": ; preds = %"65" 231 %1 = load i32* undef, align 4 ; <i32> [#uses=0] 232 br label %"100" 233 234 "82": ; preds = %"61", %"60", %"59" 235 unreachable 236 237 "93": ; preds = %"19" 238 %2 = call fastcc %"union tree_node"* @get_computation_at(%"struct loop"* undef, %"struct iv_use"* %use, %"struct iv_cand"* %cand, %"union gimple_statement_d"* %at) nounwind ; <%"union tree_node"*> [#uses=1] 239 br i1 undef, label %"100", label %"97" 240 241 "97": ; preds = %"93" 242 br i1 undef, label %"99", label %"98" 243 244 "98": ; preds = %"97" 245 br label %"99" 246 247 "99": ; preds = %"98", %"97" 248 %3 = phi %"union tree_node"* [ undef, %"98" ], [ %2, %"97" ] ; <%"union tree_node"*> [#uses=1] 249 %4 = call fastcc i32 @computation_cost(%"union tree_node"* %3, i8 zeroext undef) nounwind ; <i32> [#uses=1] 250 br label %"100" 251 252 "100": ; preds = %"99", %"93", %"67", %"62", %"25", %"23", %"8", %entry 253 %memtmp1.1.0 = phi i32 [ 0, %"99" ], [ 10000000, %entry ], [ 10000000, %"8" ], [ 10000000, %"23" ], [ 10000000, %"25" ], [ undef, %"62" ], [ undef, %"67" ], [ 10000000, %"93" ] ; <i32> [#uses=1] 254 %memtmp1.0.0 = phi i32 [ %4, %"99" ], [ 10000000, %entry ], [ 10000000, %"8" ], [ 10000000, %"23" ], [ 10000000, %"25" ], [ undef, %"62" ], [ undef, %"67" ], [ 10000000, %"93" ] ; <i32> [#uses=1] 255 %5 = zext i32 %memtmp1.0.0 to i64 ; <i64> [#uses=1] 256 %6 = zext i32 %memtmp1.1.0 to i64 ; <i64> [#uses=1] 257 %7 = shl i64 %6, 32 ; <i64> [#uses=1] 258 %8 = or i64 %7, %5 ; <i64> [#uses=1] 259 ret i64 %8 260 } 261
