I'm building a cross-gcc with target i386-mingw32msvc, running on Mac OS X 10.5.2. While it compiles and works fine and dandy, I don't seem to get any sensible debug output regarding lines/position in my program. Running the executables produced by the cross-compiler in gdb, I get full symbols in backtraces, but "the program doesn't contain any line number information" or somesuch, so I can't single-step or anything. Comparing the output from a regular cross-gcc (4.3.0 from fsf), any line number information seems to be missing. The generated assembly doesn't show any line information either; old-style gcc has lots of
.file 1 "main.c"
.loc 1 4 0
in there, while llvm-gcc has nothing.
Is this simply not implemented? I don't see anything in the code generated by --emit-llvm, so this seems to be a problem in llvm-gcc, right? Would it be feasible to add this?
Also, totally unrelated, should the current trunk build again? I'm getting a lot of
/Developer/Cocotron/1.0/Source/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp:3229: error: ‘atomic_lss’ is not a member of ‘llvm::Intrinsic’
as of r50895.