llvm Won't generate debug line information - c++

Question

I have the following code:
llvmbuilder->SetCurrentDebugLocation(llvm::DILocation::get(*llvmctx, 0, mypos, llvmsub));
Where llvmsub is constructed at each function definition beginning like so:
llvmsub = llvm::DISubprogram::getDistinct(*llvmctx, llvmcu->getFile(), currfunc->identifier, currfunc->linkage, llvmcu->getFile(), 0, nullptr, 0, nullptr, 0, 0, llvm::DINode::DIFlags::FlagZero, llvm::DISubprogram::toSPFlags(false, true, false), llvmcu);
Where currfunc->identifier, currfunc->linkage are strings - for my C function and llvmcu is defined as follows, in the beginning of my Translation Unit:
llvmcu = llvmdibuilder->createCompileUnit(llvm::dwarf::DW_LANG_C, llvmdibuilder->createFile(std::string{modulename}, ""), "regularc", false, "", 0);
I also set version like so:
mainmodule->addModuleFlag(llvm::Module::Warning, "Debug Info Version",
llvm::DEBUG_METADATA_VERSION);
The issue is that after generation (which looks like this):
0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "regularc", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
!1 = !DIFile(filename: "combined.pp_1", directory: "")
!2 = !{i32 2, !"Debug Info Version", i32 3}
!3 = !DILocation(line: 0, column: 49179, scope: !4)
!4 = distinct !DISubprogram(name: "checkkeyb", scope: !1, file: !1, spFlags: DISPFlagDefinition, unit: !0)
!5 = !DILocation(line: 0, column: 49215, scope: !4)
!6 = !DILocation(line: 0, column: 49227, scope: !4)
!7 = !DILocation(line: 0, column: 49241, scope: !4)
!8 = !DILocation(line: 0, column: 49255, scope: !4)
!9 = !DILocation(line: 0, column: 49288, scope: !4)
(The columns are so long because I actually store file offsets)
After I compiler with llc and then with clang -g I get no debug line information in lldb:
(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x30)
* frame #0: 0x0000000100126cb0 libSDL-1.2.0.dylib`SDL_SetColorKey + 36
frame #1: 0x000000010000b444 a.out`vgainit + 76
frame #2: 0x000000010000f354 a.out`maininit + 28
frame #3: 0x000000010000fd48 a.out`main + 20
frame #4: 0x00000001ac887e50 dyld`start + 2544