Commit Graph

8 Commits

Author SHA1 Message Date
Pete Cooper c73c9d273d Convert lld Pass::runOnFile to llvm::Error from std::error_code. NFC.
Pretty mechanical change here.  Just replacing all the std::error_code() with
llvm::Error() and make_dynamic_error_code with make_error<GenericError>

llvm-svn: 264917
2016-03-30 20:36:31 +00:00
Pete Cooper 8ad55fb2d0 Use owning pointers instead of raw pointers for Atom's to fix leaks.
This is a re-commit of r264022 with a fix for MSVC.  The issue there was
that the code was running DefinedAtom::~Atom() for some value and instead
needed to cast to Atom before running ~Atom.  Original commit message follows.

Currently each File contains an BumpPtrAllocator in which Atom's are
allocated.  Some Atom's contain data structures like std::vector which
leak as we don't run ~Atom when they are BumpPtrAllocate'd.

Now each File actually owns its Atom's using an OwningAtomPtr.  This
is analygous to std::unique_ptr and may be replaced by it if possible.

An Atom can therefore only be owned by a single File, so the Resolver now
moves them from one File to another.  The MachOLinkingContext owns the File's
and so clears all the Atom's in ~MachOLinkingContext, then delete's all the
File's.  This makes sure all Atom's have been destructed before any of the
BumpPtrAllocator's in which they run have gone away.

Should hopefully fix the remaining leaks.  Will keep an eye on the bots to
make sure.

llvm-svn: 264067
2016-03-22 17:15:50 +00:00
Pete Cooper 3e4d732dd0 Revert "Use owning pointers instead of raw pointers for Atom's to fix leaks."
This reverts commit r264022.

This breaks the Window's bots which don't like that i'm calling ~Atom when
the this pointer is a sublcass of Atom.

Reverting for now until I try find a better fix.  I tried using std::unique_ptr with
a custom deleter as a quick fix, but it didn't work well in the YAML parser.

llvm-svn: 264023
2016-03-22 04:00:41 +00:00
Pete Cooper 572a87e2aa Use owning pointers instead of raw pointers for Atom's to fix leaks.
Currently each File contains an BumpPtrAllocator in which Atom's are
allocated.  Some Atom's contain data structures like std::vector which
leak as we don't run ~Atom when they are BumpPtrAllocate'd.

Now each File actually owns its Atom's using an OwningAtomPtr.  This
is analygous to std::unique_ptr and may be replaced by it if possible.

An Atom can therefore only be owned by a single File, so the Resolver now
moves them from one File to another.  The MachOLinkingContext owns the File's
and so clears all the Atom's in ~MachOLinkingContext, then delete's all the
File's.  This makes sure all Atom's have been destructed before any of the
BumpPtrAllocator's in which they run have gone away.

Should hopefully fix the remaining leaks.  Will keep an eye on the bots to
make sure.

llvm-svn: 264022
2016-03-22 03:44:32 +00:00
Pete Cooper c0c464cac1 Move ownership of Pass File's to the MachoLinkingContext.
In trying to fix the leaks in the MachO lld codebase, we need to have
a better model for file and atom ownership.  Having the context own
everything seems like the simplest model, so change all the passes to
allocate File's on the context instead of owning files as a member.

llvm-svn: 264004
2016-03-21 23:17:47 +00:00
Pete Cooper c7d4035e70 Set ordinals of all File's created in MachO passes.
When we do debug printing of atoms, they expect their parent file
to have an ordinal.  Right now we trigger a bunch of asserts.

This doesn't actually manifest in differences in any real tests, but
even if the only thing it does is improve debuggability then its still
useful.

llvm-svn: 259450
2016-02-02 01:52:40 +00:00
Eugene Zelenko 4154794892 Fix Clang-tidy modernize-use-auto warnings, other minor fixes.
Differential revision: http://reviews.llvm.org/D14553

llvm-svn: 252661
2015-11-10 22:37:38 +00:00
Lang Hames 49047039b0 [lld] Add MachO thread-local storage support.
This allows LLD to correctly link MachO objects that use thread-local storage.

Differential Revision: http://reviews.llvm.org/D10578

llvm-svn: 240454
2015-06-23 20:35:31 +00:00