Mercurial > hg > CbC > CbC_llvm

comparison docs/SourceLevelDebugging.rst @ 100:7d135dc70f03 LLVM 3.9

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
LLVM 3.9
author Miyagi Mitsuki <e135756@ie.u-ryukyu.ac.jp>
date Tue, 26 Jan 2016 22:53:40 +0900
parents afa8332a0e37
children 1172e4bd9c6f
comparison
equal deleted inserted replaced
96:6418606d0ead 100:7d135dc70f03
229 Compiled to LLVM, this function would be represented like this: 229 Compiled to LLVM, this function would be represented like this:
230 230
231 .. code-block:: llvm 231 .. code-block:: llvm
232 232
233 ; Function Attrs: nounwind ssp uwtable 233 ; Function Attrs: nounwind ssp uwtable
234 define void @foo() #0 { 234 define void @foo() #0 !dbg !4 {
235 entry: 235 entry:
236 %X = alloca i32, align 4 236 %X = alloca i32, align 4
237 %Y = alloca i32, align 4 237 %Y = alloca i32, align 4
238 %Z = alloca i32, align 4 238 %Z = alloca i32, align 4
239 call void @llvm.dbg.declare(metadata i32* %X, metadata !11, metadata !13), !dbg !14 239 call void @llvm.dbg.declare(metadata i32* %X, metadata !11, metadata !13), !dbg !14
261 261
262 !0 = !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 231150) (llvm/trunk 231154)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2) 262 !0 = !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 231150) (llvm/trunk 231154)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
263 !1 = !DIFile(filename: "/dev/stdin", directory: "/Users/dexonsmith/data/llvm/debug-info") 263 !1 = !DIFile(filename: "/dev/stdin", directory: "/Users/dexonsmith/data/llvm/debug-info")
264 !2 = !{} 264 !2 = !{}
265 !3 = !{!4} 265 !3 = !{!4}
266 !4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: false, function: void ()* @foo, variables: !2) 266 !4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: false, variables: !2)
267 !5 = !DISubroutineType(types: !6) 267 !5 = !DISubroutineType(types: !6)
268 !6 = !{null} 268 !6 = !{null}
269 !7 = !{i32 2, !"Dwarf Version", i32 2} 269 !7 = !{i32 2, !"Dwarf Version", i32 2}
270 !8 = !{i32 2, !"Debug Info Version", i32 3} 270 !8 = !{i32 2, !"Debug Info Version", i32 3}
271 !9 = !{i32 1, !"PIC Level", i32 2} 271 !9 = !{i32 1, !"PIC Level", i32 2}
302 scope information for the variable ``X``. 302 scope information for the variable ``X``.
303 303
304 .. code-block:: llvm 304 .. code-block:: llvm
305 305
306 !14 = !DILocation(line: 2, column: 9, scope: !4) 306 !14 = !DILocation(line: 2, column: 9, scope: !4)
307 !4 = !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !5, 307 !4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !5,
308 isLocal: false, isDefinition: true, scopeLine: 1, 308 isLocal: false, isDefinition: true, scopeLine: 1,
309 isOptimized: false, function: void ()* @foo, 309 isOptimized: false, variables: !2)
310 variables: !2)
311 310
312 Here ``!14`` is metadata providing `location information 311 Here ``!14`` is metadata providing `location information
313 <LangRef.html#dilocation>`_. In this example, scope is encoded by ``!4``, a 312 <LangRef.html#dilocation>`_. In this example, scope is encoded by ``!4``, a
314 `subprogram descriptor <LangRef.html#disubprogram>`_. This way the location 313 `subprogram descriptor <LangRef.html#disubprogram>`_. This way the location
315 information attached to the intrinsics indicates that the variable ``X`` is 314 information attached to the intrinsics indicates that the variable ``X`` is
461 ;; Define the anchor for subprograms. 460 ;; Define the anchor for subprograms.
462 ;; 461 ;;
463 !4 = !DISubprogram(name: "main", scope: !1, file: !1, line: 1, type: !5, 462 !4 = !DISubprogram(name: "main", scope: !1, file: !1, line: 1, type: !5,
464 isLocal: false, isDefinition: true, scopeLine: 1, 463 isLocal: false, isDefinition: true, scopeLine: 1,
465 flags: DIFlagPrototyped, isOptimized: false, 464 flags: DIFlagPrototyped, isOptimized: false,
466 function: i32 (i32, i8**)* @main, variables: !2) 465 variables: !2)
467 466
468 ;; 467 ;;
469 ;; Define the subprogram itself. 468 ;; Define the subprogram itself.
470 ;; 469 ;;
471 define i32 @main(i32 %argc, i8** %argv) { 470 define i32 @main(i32 %argc, i8** %argv) !dbg !4 {
472 ... 471 ...
473 } 472 }
474 473
475 Debugging information format 474 Debugging information format
476 ============================ 475 ============================