1 # RUN: llc -run-pass=livedebugvalues -march=x86-64 -o - %s | FileCheck %s 2 3 # Test the extension of debug ranges from 3 predecessors. 4 # Generated from the source file LiveDebugValues-3preds.c: 5 # #include <stdio.h> 6 # int add(int x, int y, int z, int a) { 7 # int i; 8 # for (i = 0; i < x * y; i++) { 9 # if (i < x) { 10 # a = a * x; 11 # break; 12 # } 13 # if (i < y) { 14 # a = a * y; 15 # break; 16 # } 17 # if (i < z) { 18 # a = a * z; 19 # break; 20 # } 21 # } 22 # return a; 23 # } 24 # with clang -g -O1 -c -emit-llvm LiveDebugValues-3preds.c -S -o live-debug-values-3preds.ll 25 # then llc -stop-after stackmap-liveness live-debug-values-3preds.ll -o /dev/null > live-debug-values-3preds.mir 26 27 # DBG_VALUE for variables "x", "y" and "z" are extended into BB#9 from its 28 # predecessors BB#0, BB#2 and BB#8. 29 # CHECK: bb.9.for.end: 30 # CHECK-DAG: DBG_VALUE debug-use %edi, debug-use _, !11, !16, debug-location !17 31 # CHECK-DAG: DBG_VALUE debug-use %edx, debug-use _, !13, !16, debug-location !20 32 # CHECK-DAG: DBG_VALUE debug-use %esi, debug-use _, !12, !16, debug-location !18 33 # CHECK: RET 34 35 --- | 36 ; ModuleID = 'live-debug-values-3preds.ll' 37 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 38 target triple = "x86_64-unknown-linux-gnu" 39 40 ; Function Attrs: norecurse nounwind readnone uwtable 41 define i32 @add(i32 %x, i32 %y, i32 %z, i32 %a) #0 !dbg !4 { 42 entry: 43 tail call void @llvm.dbg.value(metadata i32 %x, i64 0, metadata !9, metadata !17), !dbg !18 44 tail call void @llvm.dbg.value(metadata i32 %y, i64 0, metadata !10, metadata !17), !dbg !19 45 tail call void @llvm.dbg.value(metadata i32 %z, i64 0, metadata !11, metadata !17), !dbg !21 46 tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !12, metadata !17), !dbg !23 47 tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !13, metadata !17), !dbg !25 48 %mul = mul nsw i32 %y, %x, !dbg !26 49 %cmp.24 = icmp sgt i32 %mul, 0, !dbg !30 50 br i1 %cmp.24, label %for.body.preheader, label %for.end, !dbg !31 51 52 for.body.preheader: ; preds = %entry 53 br label %for.body, !dbg !32 54 55 for.cond: ; preds = %if.end.6 56 %cmp = icmp slt i32 %inc, %mul, !dbg !30 57 br i1 %cmp, label %for.body, label %for.end, !dbg !31 58 59 for.body: ; preds = %for.cond, %for.body.preheader 60 %i.025 = phi i32 [ %inc, %for.cond ], [ 0, %for.body.preheader ] 61 %0 = icmp sgt i32 %x, 0 62 br i1 %0, label %if.then, label %if.end, !dbg !35 63 64 if.then: ; preds = %for.body 65 %mul2 = mul nsw i32 %a, %x, !dbg !36 66 tail call void @llvm.dbg.value(metadata i32 %mul2, i64 0, metadata !12, metadata !17), !dbg !23 67 br label %for.end, !dbg !38 68 69 if.end: ; preds = %for.body 70 %1 = icmp sgt i32 %y, 0 71 br i1 %1, label %if.then.4, label %if.end.6, !dbg !39 72 73 if.then.4: ; preds = %if.end 74 %mul5 = mul nsw i32 %a, %y, !dbg !40 75 tail call void @llvm.dbg.value(metadata i32 %mul5, i64 0, metadata !12, metadata !17), !dbg !23 76 br label %for.end, !dbg !43 77 78 if.end.6: ; preds = %if.end 79 %2 = icmp sgt i32 %z, 0 80 %inc = add nuw nsw i32 %i.025, 1, !dbg !44 81 tail call void @llvm.dbg.value(metadata i32 %inc, i64 0, metadata !13, metadata !17), !dbg !25 82 br i1 %2, label %if.then.8, label %for.cond, !dbg !45 83 84 if.then.8: ; preds = %if.end.6 85 %mul9 = mul nsw i32 %a, %z, !dbg !46 86 tail call void @llvm.dbg.value(metadata i32 %mul9, i64 0, metadata !12, metadata !17), !dbg !23 87 br label %for.end, !dbg !49 88 89 for.end: ; preds = %for.cond, %if.then.8, %if.then.4, %if.then, %entry 90 %a.addr.0 = phi i32 [ %mul2, %if.then ], [ %mul5, %if.then.4 ], [ %mul9, %if.then.8 ], [ %a, %entry ], [ %a, %for.cond ] 91 ret i32 %a.addr.0, !dbg !50 92 } 93 94 ; Function Attrs: nounwind readnone 95 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1 96 97 attributes #0 = { norecurse nounwind readnone uwtable } 98 attributes #1 = { nounwind readnone } 99 100 !llvm.dbg.cu = !{!0} 101 !llvm.module.flags = !{!14, !15} 102 !llvm.ident = !{!16} 103 104 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 253049) ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 105 !1 = !DIFile(filename: "LiveDebugValues-3preds.c", directory: "/home/vt/julia/test/tvvikram") 106 !2 = !{} 107 !4 = distinct !DISubprogram(name: "add", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !8) 108 !5 = !DISubroutineType(types: !6) 109 !6 = !{!7, !7, !7, !7, !7} 110 !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 111 !8 = !{!9, !10, !11, !12, !13} 112 !9 = !DILocalVariable(name: "x", arg: 1, scope: !4, file: !1, line: 1, type: !7) 113 !10 = !DILocalVariable(name: "y", arg: 2, scope: !4, file: !1, line: 1, type: !7) 114 !11 = !DILocalVariable(name: "z", arg: 3, scope: !4, file: !1, line: 1, type: !7) 115 !12 = !DILocalVariable(name: "a", arg: 4, scope: !4, file: !1, line: 1, type: !7) 116 !13 = !DILocalVariable(name: "i", scope: !4, file: !1, line: 2, type: !7) 117 !14 = !{i32 2, !"Dwarf Version", i32 4} 118 !15 = !{i32 2, !"Debug Info Version", i32 3} 119 !16 = !{!"clang version 3.8.0 (trunk 253049) "} 120 !17 = !DIExpression() 121 !18 = !DILocation(line: 1, column: 13, scope: !4) 122 !19 = !DILocation(line: 1, column: 20, scope: !20) 123 !20 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 1) 124 !21 = !DILocation(line: 1, column: 27, scope: !22) 125 !22 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 2) 126 !23 = !DILocation(line: 1, column: 34, scope: !24) 127 !24 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 3) 128 !25 = !DILocation(line: 2, column: 7, scope: !20) 129 !26 = !DILocation(line: 3, column: 21, scope: !27) 130 !27 = !DILexicalBlockFile(scope: !28, file: !1, discriminator: 1) 131 !28 = distinct !DILexicalBlock(scope: !29, file: !1, line: 3, column: 3) 132 !29 = distinct !DILexicalBlock(scope: !4, file: !1, line: 3, column: 3) 133 !30 = !DILocation(line: 3, column: 17, scope: !27) 134 !31 = !DILocation(line: 3, column: 3, scope: !27) 135 !32 = !DILocation(line: 4, column: 11, scope: !33) 136 !33 = distinct !DILexicalBlock(scope: !34, file: !1, line: 4, column: 9) 137 !34 = distinct !DILexicalBlock(scope: !28, file: !1, line: 3, column: 31) 138 !35 = !DILocation(line: 4, column: 9, scope: !34) 139 !36 = !DILocation(line: 5, column: 13, scope: !37) 140 !37 = distinct !DILexicalBlock(scope: !33, file: !1, line: 4, column: 16) 141 !38 = !DILocation(line: 6, column: 7, scope: !37) 142 !39 = !DILocation(line: 8, column: 9, scope: !34) 143 !40 = !DILocation(line: 9, column: 13, scope: !41) 144 !41 = distinct !DILexicalBlock(scope: !42, file: !1, line: 8, column: 16) 145 !42 = distinct !DILexicalBlock(scope: !34, file: !1, line: 8, column: 9) 146 !43 = !DILocation(line: 10, column: 7, scope: !41) 147 !44 = !DILocation(line: 3, column: 27, scope: !28) 148 !45 = !DILocation(line: 12, column: 9, scope: !34) 149 !46 = !DILocation(line: 13, column: 13, scope: !47) 150 !47 = distinct !DILexicalBlock(scope: !48, file: !1, line: 12, column: 16) 151 !48 = distinct !DILexicalBlock(scope: !34, file: !1, line: 12, column: 9) 152 !49 = !DILocation(line: 14, column: 7, scope: !47) 153 !50 = !DILocation(line: 17, column: 3, scope: !4) 154 155 ... 156 --- 157 name: add 158 alignment: 4 159 exposesReturnsTwice: false 160 hasInlineAsm: false 161 allVRegsAllocated: true 162 isSSA: false 163 tracksRegLiveness: true 164 tracksSubRegLiveness: false 165 liveins: 166 - { reg: '%edi' } 167 - { reg: '%esi' } 168 - { reg: '%edx' } 169 - { reg: '%ecx' } 170 frameInfo: 171 isFrameAddressTaken: false 172 isReturnAddressTaken: false 173 hasStackMap: false 174 hasPatchPoint: false 175 stackSize: 0 176 offsetAdjustment: 0 177 maxAlignment: 0 178 adjustsStack: false 179 hasCalls: false 180 maxCallFrameSize: 0 181 hasOpaqueSPAdjustment: false 182 hasVAStart: false 183 hasMustTailInVarArgFunc: false 184 body: | 185 bb.0.entry: 186 successors: %bb.1.for.body.preheader(20), %bb.9.for.end(12) 187 liveins: %ecx, %edi, %edx, %esi 188 189 DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18 190 DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19 191 DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21 192 DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23 193 DBG_VALUE 0, 0, !13, !17, debug-location !25 194 %r8d = MOV32rr %esi, debug-location !26 195 %r8d = IMUL32rr killed %r8d, %edi, implicit-def dead %eflags, debug-location !26 196 TEST32rr %r8d, %r8d, implicit-def %eflags, debug-location !31 197 JLE_1 %bb.9.for.end, implicit %eflags 198 199 bb.1.for.body.preheader: 200 successors: %bb.3.for.body(0) 201 liveins: %ecx, %edi, %edx, %esi, %r8d 202 203 DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18 204 DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19 205 DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21 206 DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23 207 DBG_VALUE 0, 0, !13, !17, debug-location !25 208 %eax = XOR32rr undef %eax, undef %eax, implicit-def dead %eflags 209 210 bb.3.for.body (align 4): 211 successors: %bb.4.if.then(4), %bb.5.if.end(124) 212 liveins: %eax, %ecx, %edi, %edx, %esi, %r8d 213 214 DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18 215 DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19 216 DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21 217 DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23 218 DBG_VALUE 0, 0, !13, !17, debug-location !25 219 TEST32rr %edi, %edi, implicit-def %eflags, debug-location !35 220 JG_1 %bb.4.if.then, implicit %eflags 221 222 bb.5.if.end: 223 successors: %bb.6.if.then.4(4), %bb.7.if.end.6(124) 224 liveins: %eax, %ecx, %edi, %edx, %esi, %r8d 225 226 DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18 227 DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19 228 DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21 229 DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23 230 DBG_VALUE 0, 0, !13, !17, debug-location !25 231 TEST32rr %esi, %esi, implicit-def %eflags, debug-location !39 232 JG_1 %bb.6.if.then.4, implicit %eflags 233 234 bb.7.if.end.6: 235 successors: %bb.8.if.then.8(4), %bb.2.for.cond(124) 236 liveins: %eax, %ecx, %edi, %edx, %esi, %r8d 237 238 DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18 239 DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19 240 DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21 241 DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23 242 DBG_VALUE 0, 0, !13, !17, debug-location !25 243 TEST32rr %edx, %edx, implicit-def %eflags, debug-location !45 244 JG_1 %bb.8.if.then.8, implicit %eflags 245 246 bb.2.for.cond: 247 successors: %bb.3.for.body(124), %bb.9.for.end(4) 248 liveins: %eax, %ecx, %edi, %edx, %esi, %r8d 249 250 DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18 251 DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19 252 DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21 253 DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23 254 DBG_VALUE 0, 0, !13, !17, debug-location !25 255 %eax = INC32r killed %eax, implicit-def dead %eflags, debug-location !44 256 DBG_VALUE debug-use %eax, debug-use _, !13, !17, debug-location !25 257 CMP32rr %eax, %r8d, implicit-def %eflags, debug-location !31 258 JL_1 %bb.3.for.body, implicit %eflags 259 JMP_1 %bb.9.for.end 260 261 bb.4.if.then: 262 liveins: %ecx, %edi 263 264 DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18 265 DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23 266 DBG_VALUE 0, 0, !13, !17, debug-location !25 267 %ecx = IMUL32rr killed %ecx, killed %edi, implicit-def dead %eflags, debug-location !36 268 DBG_VALUE 0, 0, !13, !17, debug-location !25 269 %eax = MOV32rr killed %ecx, debug-location !50 270 RETQ %eax, debug-location !50 271 272 bb.6.if.then.4: 273 liveins: %ecx, %esi 274 275 DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19 276 DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23 277 DBG_VALUE 0, 0, !13, !17, debug-location !25 278 %ecx = IMUL32rr killed %ecx, killed %esi, implicit-def dead %eflags, debug-location !40 279 DBG_VALUE 0, 0, !13, !17, debug-location !25 280 %eax = MOV32rr killed %ecx, debug-location !50 281 RETQ %eax, debug-location !50 282 283 bb.8.if.then.8: 284 successors: %bb.9.for.end(0) 285 liveins: %ecx, %edx 286 287 DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21 288 DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23 289 DBG_VALUE 0, 0, !13, !17, debug-location !25 290 %ecx = IMUL32rr killed %ecx, killed %edx, implicit-def dead %eflags, debug-location !46 291 292 bb.9.for.end: 293 liveins: %ecx 294 295 DBG_VALUE 0, 0, !13, !17, debug-location !25 296 %eax = MOV32rr killed %ecx, debug-location !50 297 RETQ %eax, debug-location !50 298 299 ... 300
