Commit Graph

316 Commits

Author SHA1 Message Date
Chris Lattner 5e016ae983 finally get around to doing a significant cleanup to irgen:
have CGF create and make accessible standard int32,int64 and 
intptr types.  This fixes a ton of 80 column violations 
introduced by LLVMContextification and cleans up stuff a lot.

llvm-svn: 106977
2010-06-27 07:15:29 +00:00
Daniel Dunbar 51c3387b5e Fix personality function name when using SjLj exceptions.
llvm-svn: 104999
2010-05-28 19:43:36 +00:00
Chandler Carruth 0450cc684c Fix an ambiguous else warning from GCC by adding some much needed curlies.
llvm-svn: 103972
2010-05-17 20:58:49 +00:00
David Chisnall f9c4225af6 Pick the correct personality function based on the language. This prevents link failures when C/ObjC code uses __attribute__((cleanup())) (previously this was inserting references to two libstc++ symbols; the personality function and the __terminate() function).
This is still probably wrong for Objective-C++ and adds a couple of lines in CGException that should probably be in the CGObjCRuntime subclass.  The personality function is now only looked up in one place in CGException though, so this should be easier to fix in the future.

llvm-svn: 103938
2010-05-17 13:49:20 +00:00
Douglas Gregor 51150ab1f1 When initializing thread-safe statics, put the call to
__cxa_guard_abort along the exceptional edge into (in effect) a nested
"try" that rethrows after aborting. Fixes PR7144 and the remaining
Boost.ProgramOptions failures, along with the regressions that r103880
caused.

The crucial difference between this and r103880 is that we now follow
LLVM's little dance with the llvm.eh.exception and llvm.eh.selector
calls, then use _Unwind_Resume_or_Rethrow to rethrow.

llvm-svn: 103892
2010-05-16 01:24:12 +00:00
Douglas Gregor c278d1b3b9 Revert r103880 (thread-safe static initialization w/ exceptions),
because it's causing strange linker errors. Unfixes PR7144.

llvm-svn: 103890
2010-05-16 00:44:00 +00:00
Douglas Gregor 58142dd8a1 When initializing thread-safe statics, put the call to
__cxa_guard_abort along the exceptional edge into (in effect) a nested
"try" that rethrows after aborting. Fixes PR7144 and the remaining
Boost.ProgramOptions failures.

llvm-svn: 103880
2010-05-15 17:55:51 +00:00
John McCall 48bf349471 Fix -fno-rtti -fexceptions by forcing the emission of (non-"builtin") RTTI
when used by the exceptions routines.  Fixes PR 6974.

llvm-svn: 102684
2010-04-30 01:15:21 +00:00
John McCall dac3ea6e8d Teach EHCleanupBlock to deal appropriately with the possibility that there
might not have been an insertion block set at start.  Fixes PR6975.

llvm-svn: 102677
2010-04-30 00:06:43 +00:00
John McCall 2e6567ae60 Call PerformCopyInitialization to properly initialize the exception temporary
in a throw expression.  Use EmitAnyExprToMem to emit the throw expression,
which magically elides the final copy-constructor call (which raises a new
strict-compliance bug, but baby steps).  Give __cxa_throw a destructor pointer
if the exception type has a non-trivial destructor.

llvm-svn: 102039
2010-04-22 01:10:34 +00:00
John McCall 2188696d98 Miscellaneous codegen cleanups. Mostly, don't create new basic blocks
just to save the current insertion state!  This change significantly
simplifies the IR CFG in exceptions code.

llvm-svn: 101996
2010-04-21 10:05:39 +00:00
Benjamin Kramer 966e934b34 Replace some SmallVectors with arrays.
llvm-svn: 98833
2010-03-18 16:59:57 +00:00
John McCall b81884d347 More refactoring around constructor/destructor code generation.
Fix some bugs with function-try-blocks and simplify normal try-block
code generation.

This implementation excludes a deleting destructor's call to
operator delete() from the function-try-block, which I believe
is correct but which I can't find straightforward support for at
a moment's glance.

llvm-svn: 96670
2010-02-19 09:25:03 +00:00
Daniel Dunbar 3241d400c8 Switch to using -fsjlj-exceptions instead of hard-coding it. Notably, this fixes
calls to the UnwindResumeOrRethrow function for C++/Obj-C exception handling,
for Darwin ARM.

llvm-svn: 95787
2010-02-10 18:49:11 +00:00
Anders Carlsson ff8cce4395 Make sure to set vtable pointers in the destructors as well.
llvm-svn: 95525
2010-02-07 19:45:40 +00:00
Anders Carlsson 9878f9f73b Make EmitStartEHSpec and EmitEndEHSpec return early when exceptions are disabled.
llvm-svn: 95509
2010-02-06 23:59:05 +00:00
John McCall ab26cfa58d Standardize the parsing of function type attributes in a way that
follows (as conservatively as possible) gcc's current behavior:  attributes
written on return types that don't apply there are applied to the function
instead, etc.  Only parse CC attributes as type attributes, not as decl attributes;
don't accepet noreturn as a decl attribute on ValueDecls, either (it still
needs to apply to other decls, like blocks).  Consistently consume CC/noreturn
information throughout codegen;  enforce this by removing their default values
in CodeGenTypes::getFunctionInfo().

llvm-svn: 95436
2010-02-05 21:31:56 +00:00
Mike Stump 9d44fdb397 Fix last patch, catch of reference to non-pointer.
llvm-svn: 92386
2010-01-01 03:20:32 +00:00
Mike Stump 5ee041873b Fix catching a reference to a pointer.
llvm-svn: 92385
2010-01-01 02:51:52 +00:00
Anders Carlsson 61a401caec Pass ReturnValueSlot to EmitCall. No functionality change yet.
llvm-svn: 92138
2009-12-24 19:25:24 +00:00
Mike Stump 4a779b93e4 Cleanup some dead code.
llvm-svn: 92122
2009-12-24 06:52:05 +00:00
Douglas Gregor 247894b361 There is no such thing as typeinfo for a cv-qualified type. Assert
that this is true when mangling, then fix up the various places in
Sema and/or CodeGen that need to remove qualifiers. Addresses a
linking issue when building LLVM with Clang.

llvm-svn: 92064
2009-12-23 22:04:40 +00:00
Anders Carlsson 3f4336cb1f Rename GetAddrOfRTTI to GetAddrOfRTTIDescriptor. Remove the overload that takes a CXXRecordDecl since we were just creating a QualType from it anyway.
llvm-svn: 91590
2009-12-17 07:09:17 +00:00
Mike Stump cd8faeb0b1 Ensure we run cleanups for CXXTemporaries on the exceptional edge. WIP.
llvm-svn: 91588
2009-12-17 06:08:47 +00:00
Anders Carlsson 07863b8b6e Use GetAddrOfRTTI everywhere and remove GenerateRTTI and GenerateRTTIRef. With this change, we can now compile and link TableGen.
llvm-svn: 91520
2009-12-16 07:05:41 +00:00
Chandler Carruth 8abbc657a9 Silence some release build warnings.
llvm-svn: 91234
2009-12-13 01:37:04 +00:00
Jeffrey Yasskin 1615d45daa Un-namespace-qualify llvm_unreachable. It's a macro, so the qualification gave
no extra safety anyway.

llvm-svn: 91207
2009-12-12 05:05:38 +00:00
Anders Carlsson afd1edb52e When an exception needs to be freed by calling __cxa_exception_free, make sure to stash away the exception pointer somewhere.
This fixes an "Instruction does not dominate all uses!" verification error when compiling TableGen.

llvm-svn: 91084
2009-12-11 00:32:37 +00:00
Mike Stump 37077bf651 Fix spacing.
llvm-svn: 91078
2009-12-11 00:02:10 +00:00
Mike Stump 3c6a12ca65 Setup cleanup on eh edge out of the construction of the cleanup object
during throw to deallocate the exception object.  WIP.

llvm-svn: 91035
2009-12-10 01:52:30 +00:00
Mike Stump 75546b8c88 Fixup spacing.
llvm-svn: 91001
2009-12-10 00:06:18 +00:00
Mike Stump f5cbb08c4b Ensure we only generate one terminate handler.
llvm-svn: 90998
2009-12-10 00:02:42 +00:00
Mike Stump 3b60f034f9 Remove obsolete FIXME and some dead fallback code.
llvm-svn: 90997
2009-12-09 23:52:09 +00:00
Mike Stump 25b20fc2ae Add terminate handler for copy constructors for thrown objects. WIP.
llvm-svn: 90994
2009-12-09 23:31:35 +00:00
Mike Stump 2b488873bf Break out code for reuse. WIP.
llvm-svn: 90991
2009-12-09 22:59:31 +00:00
Mike Stump aff69af918 Add cleanups for exceptional edges. WIP.
llvm-svn: 90940
2009-12-09 03:35:49 +00:00
Mike Stump 4a6b337cfd Add fixme.
llvm-svn: 90884
2009-12-08 22:12:48 +00:00
Mike Stump e6d54ca553 Remove some old code. WIP.
llvm-svn: 90882
2009-12-08 21:46:41 +00:00
Mike Stump 02c23d68cb Fixup catch parameters with class reference type. WIP.
llvm-svn: 90821
2009-12-08 01:29:31 +00:00
Mike Stump 1d849219a5 Add codegen support for exception specifications. WIP.
llvm-svn: 90817
2009-12-07 23:38:24 +00:00
Mike Stump 62afe99814 Work around emitters that can't deal with dead code contexts yet.
llvm-svn: 90796
2009-12-07 20:12:14 +00:00
Mike Stump bee78dd31b Add support for function try blocks.
llvm-svn: 90622
2009-12-04 23:26:17 +00:00
Mike Stump 875912ac13 Fixup nested try blocks.
llvm-svn: 90576
2009-12-04 19:21:57 +00:00
Mike Stump 5c820758f5 Fix warning and be sure to set up the rethrow pointer if we fall off
the end of all the catches.

llvm-svn: 90574
2009-12-04 19:03:47 +00:00
Mike Stump 8c1253b4c2 Try/catch statements seem to be working well enough to turn on.
llvm-svn: 90538
2009-12-04 03:57:07 +00:00
Mike Stump 2ab55765f7 Disable for now, doesn't play nice with the temporary code.
llvm-svn: 90537
2009-12-04 03:55:53 +00:00
Mike Stump 114ab9f695 Fixup reference binding for catch parameters.
Fixup throws and rethrows to use invoke as appropriate.

llvm-svn: 90513
2009-12-04 01:51:45 +00:00
Mike Stump 5f141b75f9 These are done.
llvm-svn: 90494
2009-12-03 22:55:42 +00:00
Mike Stump 7398ff0f07 Improve catch parameter bindings for scalar non-pointers. WIP.
llvm-svn: 90492
2009-12-03 22:38:15 +00:00
Mike Stump 2842b4cf86 Reflow.
llvm-svn: 90407
2009-12-03 03:40:14 +00:00
Mike Stump 26ada867ba Remove untrue statement.
llvm-svn: 90377
2009-12-03 01:34:13 +00:00
Mike Stump 2d52ce5f94 Cleanups on exceptional edges don't work at all, yet. This doesn't
catch very many of them and if we caught all of them, the errors would
be annoying.  I'm working on this next.  WIP.

llvm-svn: 90358
2009-12-02 23:46:02 +00:00
Mike Stump 90990965e0 Add a cleanup scope for each catch clause.
llvm-svn: 90357
2009-12-02 23:37:16 +00:00
Mike Stump 9732915bf9 Pull the terminate handler up so that we can use it for the catch
parameter setup code and set up the catch parameter setup code to
protect that code with terminate.

llvm-svn: 90340
2009-12-02 19:53:57 +00:00
Mike Stump c01c2b87e8 Change rtti/Rtti to RTTI, as it is an acronym.
llvm-svn: 90334
2009-12-02 18:57:08 +00:00
Mike Stump a9a590cd12 Avoid warning for getTerminateFn defined but not used.
llvm-svn: 90330
2009-12-02 18:20:18 +00:00
Mike Stump a510597ef9 terminate doesn't throw.
llvm-svn: 90308
2009-12-02 08:18:09 +00:00
Mike Stump 33270211a0 More exception handling improvements... WIP.
Highlights include:

  Add a helper to generate __cxa_free_exception and _ZSt9terminatev.
  Add a region to handle EH object deallocation for ctor failures for throw.
  Add a terminate handler for __cxa_end_catch.
  A framework for adding cleanup actions for the exceptional edges only.

llvm-svn: 90305
2009-12-02 07:41:41 +00:00
Mike Stump 5406614be9 Much work on try/catch statement. WIP.
Highlights include:

  Fix __cxa_begin_catch so it now returns a value.
  Added getUnwindResumeOrRethrowFn helper to build up calls to
  _Unwind_Resume_or_Rethrow.
  Broke out object copying code into CopyObject from EmitCXXThrowExpr.
  Built up another version of CopyObject that can copy from memory for
  use in the catch parameter code.
  RTTI generation for type matching for catch.
  Code to check for the type match for catch.
  Code to generate the catch parameter, WIP, need make sure references
  and pointers and copy ctors work.

llvm-svn: 90205
2009-12-01 03:41:18 +00:00
Mike Stump 58ef18b38c Checkpoint current work. WIP.
llvm-svn: 89513
2009-11-20 23:44:51 +00:00
Mike Stump d8d26d06a5 Implement throw d, where d is a class type that requires copy
construction.  WIP.

llvm-svn: 89442
2009-11-20 02:31:07 +00:00
Mike Stump 4d7a07bdaf Handle throw d, where d is a class type but only has a trivial copy
constructor.  WIP.

llvm-svn: 89438
2009-11-20 01:57:39 +00:00
Mike Stump d1782cc478 Add suport for throw;. WIP.
llvm-svn: 89424
2009-11-20 00:56:31 +00:00
Mike Stump 18fc44dfd3 Fix rtti generation for throws. WIP.
llvm-svn: 89420
2009-11-20 00:43:57 +00:00
Anders Carlsson 32e1b1c169 Get throws limping along, still a bunch of FIXMEs. Too bad we don't support catching anything yet :)
llvm-svn: 85574
2009-10-30 02:27:02 +00:00
Anders Carlsson 4b08db7a62 Add CGException.cpp, to be used for exception related code generation.
llvm-svn: 85560
2009-10-30 01:42:31 +00:00