aba5b91b69
This patch writes the full -cc1 command into the resulting .OBJ, like MSVC does. This allows for external tools (Recode, Live++) to rebuild a source file without any external dependency but the .OBJ itself (other than the compiler) and without knowledge of the build system. The LF_BUILDINFO record stores a full path to the compiler, the PWD (CWD at program startup), a relative or absolute path to the source, and the full CC1 command line. The stored command line is self-standing (does not depend on the environment). In the same way, MSVC doesn't exactly store the provided command-line, but an expanded version (a somehow equivalent of CC1) which is also self-standing. For more information see PR36198 and D43002. Differential Revision: https://reviews.llvm.org/D80833
40 lines
1.7 KiB
LLVM
40 lines
1.7 KiB
LLVM
; RUN: llc -filetype=obj -mtriple i686-pc-windows-msvc %s -o %t.o
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; RUN: llvm-pdbutil dump %t.o -symbols -types | FileCheck %s
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; CHECK: [[INFO_IDX:0x[^ ]*]] | LF_BUILDINFO
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; CHECK-NEXT: 0x{{.*}}: `D:\src\scopes\clang`
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; CHECK-NEXT: <no type>: ``
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; CHECK-NEXT: 0x{{.*}}: `D:\src\scopes\foo.cpp`
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; CHECK-NEXT: 0x{{.*}}: ``
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; CHECK-NEXT: <no type>: ``
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; CHECK: {{.*}} | S_BUILDINFO [size = 8] BuildId = `[[INFO_IDX]]`
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; ModuleID = 'D:\src\scopes\foo.cpp'
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source_filename = "D:\5Csrc\5Cscopes\5Cfoo.cpp"
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target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
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target triple = "i686-pc-windows-msvc19.0.23918"
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define i32 @"?foo@@YAHXZ"() !dbg !10 {
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entry:
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ret i32 42, !dbg !14
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!7, !8}
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!llvm.ident = !{!9}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 4.0.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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; One .debug$S section should contain an S_COMPILE3 record that identifies the
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; source language and the version of the compiler based on the DICompileUnit.
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!1 = !DIFile(filename: "D:\5Csrc\5Cscopes\5Cfoo.cpp", directory: "D:\5Csrc\5Cscopes\5Cclang")
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!2 = !{}
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!7 = !{i32 2, !"CodeView", i32 1}
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!8 = !{i32 2, !"Debug Info Version", i32 3}
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!9 = !{!"clang version 4.0.0 "}
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!10 = distinct !DISubprogram(name: "foo", linkageName: "\01?foo@@YAHXZ", scope: !1, file: !1, line: 1, type: !11, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
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!11 = !DISubroutineType(types: !12)
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!12 = !{!13}
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!13 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!14 = !DILocation(line: 2, scope: !10)
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