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83 Commits

Author SHA1 Message Date
Bill Wendling 86f72fc3d9 - Emit new line after each FDE. 
- Fix comment.

llvm-svn: 79971
 2009-08-25 02:32:05 +00:00
Bill Wendling d7ace1e530 Rename functions to something more descriptive. At the very least mention the 
CIE and FDE in their names.

llvm-svn: 79969
 2009-08-25 02:27:42 +00:00
Chris Lattner e9a75a6654 rename TAI -> MAI, being careful not to make MAILJMP instructions :) 
llvm-svn: 79777
 2009-08-22 21:43:10 +00:00
Chris Lattner 7b26fce23e Rename TargetAsmInfo (and its subclasses) to MCAsmInfo. 
llvm-svn: 79763
 2009-08-22 20:48:53 +00:00
Bill Wendling 0e749fe36b Attempt to comment this code more. 
llvm-svn: 79567
 2009-08-20 22:02:24 +00:00
David Greene a5be1b174b Add missing includes. 
llvm-svn: 79474
 2009-08-19 21:55:33 +00:00
Chris Lattner 4b7dadb76e eliminate AsmPrinter::SwitchToSection and just have clients 
talk to the MCStreamer directly instead.

llvm-svn: 79405
 2009-08-19 05:49:37 +00:00
Chris Lattner 03ded465d2 fix COFF targets (mingw/cygwin) to provide ehframe and LSDA sections 
llvm-svn: 79346
 2009-08-18 16:56:17 +00:00
Chris Lattner 5de2e2de93 add a horrible hack to the dwarf printer. It looks like mingw is not specifying 
an EHFrame section, so we just emit ehframe data into a random section.

This is clearly bad.

llvm-svn: 79323
 2009-08-18 06:13:03 +00:00
Jim Grosbach 43bbb9de66 Remove a bit more cruft from the sjlj moving to a backend pass. 
llvm-svn: 79272
 2009-08-17 20:25:04 +00:00
Jim Grosbach 486be66dbd Move the sjlj exception handling conversions to a back-end pass where they 
more properly belong. This allows removing the front-end conditionalized
SJLJ code, and cleans up the generated IR considerably. All of the
infrastructure code (calling _Unwind_SjLj_Register/Unregister, etc) is
added by the SjLjEHPrepare pass.

llvm-svn: 79250
 2009-08-17 16:41:22 +00:00
Jim Grosbach 3cfc6463c9 Add catch block handling to SjLj exception handling. 
llvm-svn: 78817
 2009-08-12 17:38:44 +00:00
Jim Grosbach 693e36a3e8 SjLj based exception handling unwinding support. This patch is nasty, brutish 
and short. Well, it's kinda short. Definitely nasty and brutish.

The front-end generates the register/unregister calls into the SjLj runtime,
call-site indices and landing pad dispatch. The back end fills in the LSDA
with the call-site information provided by the front end. Catch blocks are
not yet implemented.

Built on Darwin and verified no llvm-core "make check" regressions.

llvm-svn: 78625
 2009-08-11 00:09:57 +00:00
Chris Lattner c784feba8e convert EHFrameSection to be managed by TLOF instead of TAI. 
llvm-svn: 77888
 2009-08-02 06:52:36 +00:00
Chris Lattner 7005cd3fa0 Fix some fixme's in #if 0'd code by making it dependent on the structural 
behavior of the LSDA section instead of on some random target hook that
needs to be kept in synch with other points of truth.

llvm-svn: 77855
 2009-08-02 03:59:56 +00:00
Chris Lattner c16c75ea9b move getDwarfExceptionSection from TAI to TLOF and rename it to 
getLSDASection() to be more specific.  This makes it pretty obvious
that the ELF LSDA section is being specified wrong in PIC mode.  We're
probably getting a lot of startup-time relocations to a readonly page,
which is expensive and bad.

Someone who cares about ELF C++ should investigate this.

llvm-svn: 77847
 2009-08-02 01:34:32 +00:00
Chris Lattner f4b92a8a00 add some comments on how this is *supposed* to work. We don't 
need the PreferredEHDataFormat hook, but I have yet-more refactoring to
do before I can zap it.

llvm-svn: 77742
 2009-07-31 22:18:14 +00:00
Chris Lattner 47fc2351c0 rearrange a conditional. Even if this weren't #if 0'd out, this would 
have no functionality change.

llvm-svn: 77741
 2009-07-31 22:03:47 +00:00
Chris Lattner 63779b8d57 PreferredEHDataFormat is always call with data and global, but this whole 
thing is #if0'd out anyway.  Just simplify the code by reducing the interface.
Not deleting this is essential for Bill's continuing happiness.

llvm-svn: 77736
 2009-07-31 21:39:55 +00:00
Bill Wendling 4505734342 Forgot to output the base offset. 
llvm-svn: 77505
 2009-07-29 21:19:44 +00:00
Bill Wendling 2cf001479c Move comment to above method. 
llvm-svn: 77412
 2009-07-29 00:50:05 +00:00
Bill Wendling b67440efb8 - Temporarily unbreak the build by forcing the TType "absptr", which isn't 
correct. But what are you going to do? I'll fix this in the future.
- Move another large loop into its own method.

llvm-svn: 77408
 2009-07-29 00:31:35 +00:00
Bill Wendling 23b177e86e Cleanup code to use iterators instead of ".size()". 
Does any one else hate the name "const_reverse_iterator" as much as I do?

llvm-svn: 77399
 2009-07-28 23:44:43 +00:00
Bill Wendling 6c574d883c Doxygenify comments. 
llvm-svn: 77394
 2009-07-28 23:23:00 +00:00
Bill Wendling 1fddd873b4 Split out large loop into it's very own method. No intended functionality change. 
llvm-svn: 77393
 2009-07-28 23:22:13 +00:00
Bill Wendling 15349f81fb Output the EH TType format and base offset only if there are types that we're 
going to emit.

llvm-svn: 77382
 2009-07-28 22:23:45 +00:00
Bill Wendling 5196c9c7c9 Use the preferred EH data format for the preferred EH data format. 
llvm-svn: 77373
 2009-07-28 21:54:03 +00:00
Chris Lattner 58f9bb2ccd implement a new magic global "llvm.compiler.used" which is like llvm.used, but 
doesn't cause ".no_dead_strip" to be emitted on darwin.

llvm-svn: 76399
 2009-07-20 06:14:25 +00:00
Chris Lattner 1af5af8640 Use more terse and precise linkage checks. 
llvm-svn: 76237
 2009-07-17 21:00:50 +00:00
Chris Lattner e03a866b34 these two pieces of code are the same because we always 
emit the EHFrame label next to the section_eh_frame and
eh_frame_common labels.

llvm-svn: 76234
 2009-07-17 20:53:51 +00:00
Chris Lattner e79b2bc088 Untangle a snarl that I discovered when updating the mangler, 
starting in getCurrentFunctionEHName.  Among other problems,
we would try to privative a "foo.eh" label, but end up emitting
the label as _Lfoo.eh instead of L_foo.eh on darwin.  This is really
bad, and the linker has always tolerated these labels existing.
For now, just emit them as _foo.eh.

This patch also fixes problems with ".eh" labels on unnamed
functions and eliminates two strangely defined TargetAsmInfo
hooks.

llvm-svn: 76231
 2009-07-17 20:46:40 +00:00
Bill Wendling dd20b98c35 Move c'tor/d'tor to top of file. 
llvm-svn: 71828
 2009-05-15 01:18:50 +00:00
Bill Wendling d64cd2bb6e Split out the DwarfException class into its own file. No functionality change, 
though the classes have been marked with "VISIBILITY_HIDDEN".

llvm-svn: 71827
 2009-05-15 01:12:28 +00:00