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llvm-project/lld/test/COFF/pdb-source-lines.test

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[PDB] Start emitting source file and line information Summary: This is a first step towards getting line info to show up in VS and windbg. So far, only llvm-pdbutil can parse the PDBs that we produce. cvdump doesn't like something about our file checksum tables. I'll have to dig into that next. This patch adds a new DebugSubsectionRecordBuilder which takes bytes directly from some other producer, such as a linker, and sticks it into the PDB. Line tables only need to be relocated. No data needs to be rewritten. File checksums and string tables, on the other hand, need to be re-done. Reviewers: zturner, ruiu Subscribers: llvm-commits, hiraditya Differential Revision: https://reviews.llvm.org/D34257 llvm-svn: 305713
2017-06-20 01:21:45 +08:00
Test the linker line tables on roughly the following example:
==> foo.h <==
void bar(void);
inline void foo(void) {
bar();
}
==> pdb_lines_1.c <==
#include "foo.h"
int main(void) {
foo();
return 42;
}
==> pdb_lines_2.c <==
void bar(void) {
}
$ cl -c -Z7 pdb_lines*.c
RUN: yaml2obj %S/Inputs/pdb_lines_1.yaml -o %t.pdb_lines_1.obj
RUN: yaml2obj %S/Inputs/pdb_lines_2.yaml -o %t.pdb_lines_2.obj
RUN: lld-link -debug -entry:main -nodefaultlib -out:%t.exe -pdb:%t.pdb %t.pdb_lines_1.obj %t.pdb_lines_2.obj
RUN: llvm-pdbutil pdb2yaml -modules -module-files -subsections=lines,fc %t.pdb | FileCheck %s
CHECK-LABEL: DbiStream:
Fix some differences between lld and MSVC generated PDBs. A couple of things were different about our generated PDBs. 1) We were outputting the wrong Version on the PDB Stream. The version we were setting was newer than what MSVC is setting. It's not clear what the implications are, but we change LLD to use PdbImplVC70, as MSVC does. 2) For the optional debug stream indices in the DBI Stream, we were outputting 0 to mean "the stream is not present". MSVC outputs uint16_t(-1), which is the "correct" way to specify that a stream is not present. So we fix that as well. 3) We were setting the PDB Stream signature to 0. This is supposed to be the result of calling time(nullptr). Although this leads to non-deterministic builds, a better way to solve that is by having a command line option explicitly for generating a reproducible build, and have the default behavior of lld-link match the default behavior of link. To test this, I'm making use of the new and improved `pdb diff` sub command. To make it suitable for writing tests against, I had to modify the diff subcommand slightly to print less verbose output. Previously it would always print | <column> | <value1> | <value2> | which is quite verbose, and the values are fragile. All we really want to know is "did we produce the same value as link?" So I added command line options to print a single character representing the result status (different, identical, equivalent), and another to hide the value display. Note that just inspecting the diff output used to write the test, you can see some things that are obviously wrong. That is just reflective of the fact that this is the state of affairs today, not that we're asserting that this is "correct". We can use this as a starting point to discover differences, fix them, and update the test. Differential Revision: https://reviews.llvm.org/D35086 llvm-svn: 307422
2017-07-08 02:45:56 +08:00
CHECK-NEXT: VerHeader: V70
[PDB] Start emitting source file and line information Summary: This is a first step towards getting line info to show up in VS and windbg. So far, only llvm-pdbutil can parse the PDBs that we produce. cvdump doesn't like something about our file checksum tables. I'll have to dig into that next. This patch adds a new DebugSubsectionRecordBuilder which takes bytes directly from some other producer, such as a linker, and sticks it into the PDB. Line tables only need to be relocated. No data needs to be rewritten. File checksums and string tables, on the other hand, need to be re-done. Reviewers: zturner, ruiu Subscribers: llvm-commits, hiraditya Differential Revision: https://reviews.llvm.org/D34257 llvm-svn: 305713
2017-06-20 01:21:45 +08:00
CHECK-NEXT: Age: 1
CHECK-NEXT: BuildNumber: 0
CHECK-NEXT: PdbDllVersion: 0
CHECK-NEXT: PdbDllRbld: 0
CHECK-NEXT: Flags: 0
CHECK-NEXT: MachineType: x86
CHECK-NEXT: Modules:
Fix build and PDB test on Linux llvm-svn: 305716
2017-06-20 01:27:31 +08:00
CHECK-LABEL: - Module: {{.*}}pdb_lines_1.obj
CHECK-NEXT: ObjFile: {{.*}}pdb_lines_1.obj
[PDB] Start emitting source file and line information Summary: This is a first step towards getting line info to show up in VS and windbg. So far, only llvm-pdbutil can parse the PDBs that we produce. cvdump doesn't like something about our file checksum tables. I'll have to dig into that next. This patch adds a new DebugSubsectionRecordBuilder which takes bytes directly from some other producer, such as a linker, and sticks it into the PDB. Line tables only need to be relocated. No data needs to be rewritten. File checksums and string tables, on the other hand, need to be re-done. Reviewers: zturner, ruiu Subscribers: llvm-commits, hiraditya Differential Revision: https://reviews.llvm.org/D34257 llvm-svn: 305713
2017-06-20 01:21:45 +08:00
CHECK-NEXT: SourceFiles:
CHECK-NEXT: - '{{.*}}pdb_lines_1.c'
CHECK-NEXT: - '{{.*}}foo.h'
CHECK-NEXT: Subsections:
CHECK-NEXT: - !Lines
CHECK-NEXT: CodeSize: 19
CHECK-NEXT: Flags: [ ]
CHECK-NEXT: RelocOffset: 0
CHECK-NEXT: RelocSegment: 2
CHECK-NEXT: Blocks:
CHECK-NEXT: - FileName: '{{.*}}pdb_lines_1.c'
CHECK-NEXT: Lines:
CHECK-NEXT: - Offset: 0
CHECK-NEXT: LineStart: 2
CHECK-NEXT: IsStatement: true
CHECK-NEXT: EndDelta: 0
CHECK-NEXT: - Offset: 4
CHECK-NEXT: LineStart: 3
CHECK-NEXT: IsStatement: true
CHECK-NEXT: EndDelta: 0
CHECK-NEXT: - Offset: 9
CHECK-NEXT: LineStart: 4
CHECK-NEXT: IsStatement: true
CHECK-NEXT: EndDelta: 0
CHECK-NEXT: - Offset: 14
CHECK-NEXT: LineStart: 5
CHECK-NEXT: IsStatement: true
CHECK-NEXT: EndDelta: 0
CHECK-NEXT: Columns:
CHECK-NEXT: - !FileChecksums
CHECK-NEXT: Checksums:
CHECK-NEXT: - FileName: '{{.*}}pdb_lines_1.c'
CHECK-NEXT: Kind: MD5
CHECK-NEXT: Checksum: 4EB19DCD86C3BA2238A255C718572E7B
CHECK-NEXT: - FileName: '{{.*}}foo.h'
CHECK-NEXT: Kind: MD5
CHECK-NEXT: Checksum: 061EB73ABB642532857A4F1D9CBAC323
CHECK-NEXT: - !Lines
CHECK-NEXT: CodeSize: 14
CHECK-NEXT: Flags: [ ]
CHECK-NEXT: RelocOffset: 32
CHECK-NEXT: RelocSegment: 2
CHECK-NEXT: Blocks:
CHECK-NEXT: - FileName: '{{.*}}foo.h'
CHECK-NEXT: Lines:
CHECK-NEXT: - Offset: 0
CHECK-NEXT: LineStart: 2
CHECK-NEXT: IsStatement: true
CHECK-NEXT: EndDelta: 0
CHECK-NEXT: - Offset: 4
CHECK-NEXT: LineStart: 3
CHECK-NEXT: IsStatement: true
CHECK-NEXT: EndDelta: 0
CHECK-NEXT: - Offset: 9
CHECK-NEXT: LineStart: 4
CHECK-NEXT: IsStatement: true
CHECK-NEXT: EndDelta: 0
CHECK-NEXT: Columns:
Fix build and PDB test on Linux llvm-svn: 305716
2017-06-20 01:27:31 +08:00
CHECK-LABEL: - Module: {{.*}}pdb_lines_2.obj
CHECK-NEXT: ObjFile: {{.*}}pdb_lines_2.obj
[PDB] Start emitting source file and line information Summary: This is a first step towards getting line info to show up in VS and windbg. So far, only llvm-pdbutil can parse the PDBs that we produce. cvdump doesn't like something about our file checksum tables. I'll have to dig into that next. This patch adds a new DebugSubsectionRecordBuilder which takes bytes directly from some other producer, such as a linker, and sticks it into the PDB. Line tables only need to be relocated. No data needs to be rewritten. File checksums and string tables, on the other hand, need to be re-done. Reviewers: zturner, ruiu Subscribers: llvm-commits, hiraditya Differential Revision: https://reviews.llvm.org/D34257 llvm-svn: 305713
2017-06-20 01:21:45 +08:00
CHECK-NEXT: SourceFiles:
CHECK-NEXT: - '{{.*}}pdb_lines_2.c'
CHECK-NEXT: Subsections:
CHECK-NEXT: - !Lines
CHECK-NEXT: CodeSize: 1
CHECK-NEXT: Flags: [ ]
CHECK-NEXT: RelocOffset: 48
CHECK-NEXT: RelocSegment: 2
CHECK-NEXT: Blocks:
CHECK-NEXT: - FileName: '{{.*}}pdb_lines_2.c'
CHECK-NEXT: Lines:
CHECK-NEXT: - Offset: 0
CHECK-NEXT: LineStart: 1
CHECK-NEXT: IsStatement: true
CHECK-NEXT: EndDelta: 0
CHECK-NEXT: - Offset: 0
CHECK-NEXT: LineStart: 2
CHECK-NEXT: IsStatement: true
CHECK-NEXT: EndDelta: 0
CHECK-NEXT: Columns:
CHECK-NEXT: - !FileChecksums
CHECK-NEXT: Checksums:
CHECK-NEXT: - FileName: '{{.*}}pdb_lines_2.c'
CHECK-NEXT: Kind: MD5
CHECK-NEXT: Checksum: DF91CB3A2B8D917486574BB50CAC4CC7
CHECK-NEXT: - Module: '* Linker *'
CHECK-NEXT: ObjFile: ''