Commit Graph

28 Commits

Author SHA1 Message Date
Saleem Abdulrasool 8076cab0ce CodeGen: refactor DwarfException
DwarfException served as a base class for exception handling directive emission.
However, this is also used by other exception models (e.g. Win64EH).  Rename
this class to EHStreamer and split it out of DwarfException.h.  NFC.

Use the opportunity to fix up some of the documentation comments to match
current LLVM style.  Also rename some functions to conform better with current
LLVM coding style.

llvm-svn: 210622
2014-06-11 01:19:03 +00:00
Logan Chien 95188b9092 Fix ARM EHABI when function has landingpad and nounwind.
If the function has the landingpad instruction, then the
handlerdata should be emitted even if the function has
nouwnind attribute.  Otherwise, following code will not
work:

    void test1() noexcept {
      try {
        throw_exception();
      } catch (...) {
        log_unexpected_exception();
      }
    }

Since the cantunwind was incorrectly emitted and the
LSDA is not available.

llvm-svn: 208791
2014-05-14 16:38:30 +00:00
Joerg Sonnenberger 3c10817b92 Prepare support of Itanium ABI on ARM as opposed to EHABI by
conditionally emitting .fnstart and friends only for EHABI.

llvm-svn: 207718
2014-04-30 22:43:13 +00:00
Craig Topper 353eda484c [C++] Use 'nullptr'.
llvm-svn: 207083
2014-04-24 06:44:33 +00:00
Artyom Skrobov f6830f47b8 Generate the DWARF stack frame decode operations in the function prologue for ARM/Thumb functions.
Patch by Keith Walker!

llvm-svn: 201423
2014-02-14 17:19:07 +00:00
Renato Golin 8cea6e8fc6 Enable EHABI by default
After all hard work to implement the EHABI and with the test-suite
passing, it's time to turn it on by default and allow users to
disable it as a work-around while we fix the eventual bugs that show
up.

This commit also remove the -arm-enable-ehabi-descriptors, since we
want the tables to be printed every time the EHABI is turned on
for non-Darwin ARM targets.

Although MCJIT EHABI is not working yet (needs linking with the right
libraries), this commit also fixes some relocations on MCJIT regarding
the EH tables/lib calls, and update some tests to avoid using EH tables
when none are needed.

The EH tests in the test-suite that were previously disabled on ARM
now pass with these changes, so a follow-up commit on the test-suite
will re-enable them.

llvm-svn: 200388
2014-01-29 11:50:56 +00:00
Rafael Espindola 4a1a360634 Make getTargetStreamer return a possibly null pointer.
This will allow it to be called from target independent parts of the main
streamer that don't know if there is a registered target streamer or not. This
in turn will allow targets to perform extra actions at specified points in the
interface: add extra flags for some labels, extra work during finalization, etc.

llvm-svn: 199174
2014-01-14 01:21:46 +00:00
Rafael Espindola 894843cb4e Move the llvm mangler to lib/IR.
This makes it available to tools that don't link with target (like llvm-ar).

llvm-svn: 198708
2014-01-07 21:19:40 +00:00
Timur Iskhodzhanov 1cd1444449 Reland 196270 "Generalize debug info / EH emission in AsmPrinter"
Addressing the existense AMDGPUAsmPrinter and other subclasses of AsmPrinter

llvm-svn: 196288
2013-12-03 15:10:23 +00:00
Timur Iskhodzhanov 119f307317 Rename DwarfException methods so the new names are consistent with DwarfDebug and the style guide
llvm-svn: 195763
2013-11-26 13:34:55 +00:00
Rafael Espindola 79858aa3df Add a helper getSymbol to AsmPrinter.
llvm-svn: 193627
2013-10-29 17:07:16 +00:00
Rafael Espindola a17151ad5a Add a MCTargetStreamer interface.
This patch fixes an old FIXME by creating a MCTargetStreamer interface
and moving the target specific functions for ARM, Mips and PPC to it.

The ARM streamer is still declared in a common place because it is
used from lib/CodeGen/ARMException.cpp, but the Mips and PPC are
completely hidden in the corresponding Target directories.

I will send an email to llvmdev with instructions on how to use this.

llvm-svn: 192181
2013-10-08 13:08:17 +00:00
Benjamin Kramer 6ecb1e78a9 Make helpers static. Add missing include so LLVMInitializeObjCARCOpts gets C linkage.
llvm-svn: 175264
2013-02-15 12:30:38 +00:00
Jakub Staszak 853136229b Remove unneeded "TargetMachine.h" #includes.
llvm-svn: 174817
2013-02-09 20:54:05 +00:00
Chandler Carruth 9fb823bbd4 Move all of the header files which are involved in modelling the LLVM IR
into their new header subdirectory: include/llvm/IR. This matches the
directory structure of lib, and begins to correct a long standing point
of file layout clutter in LLVM.

There are still more header files to move here, but I wanted to handle
them in separate commits to make tracking what files make sense at each
layer easier.

The only really questionable files here are the target intrinsic
tablegen files. But that's a battle I'd rather not fight today.

I've updated both CMake and Makefile build systems (I think, and my
tests think, but I may have missed something).

I've also re-sorted the includes throughout the project. I'll be
committing updates to Clang, DragonEgg, and Polly momentarily.

llvm-svn: 171366
2013-01-02 11:36:10 +00:00
Chandler Carruth ed0881b2a6 Use the new script to sort the includes of every file under lib.
Sooooo many of these had incorrect or strange main module includes.
I have manually inspected all of these, and fixed the main module
include to be the nearest plausible thing I could find. If you own or
care about any of these source files, I encourage you to take some time
and check that these edits were sensible. I can't have broken anything
(I strictly added headers, and reordered them, never removed), but they
may not be the headers you'd really like to identify as containing the
API being implemented.

Many forward declarations and missing includes were added to a header
files to allow them to parse cleanly when included first. The main
module rule does in fact have its merits. =]

llvm-svn: 169131
2012-12-03 16:50:05 +00:00
Anton Korobeynikov 097b0e9d6a Make AsmPrinter::EmitTTypeReference() more robust - put
the zero GV check inside, so we won't forget it at the caller side.

llvm-svn: 168328
2012-11-19 21:17:20 +00:00
Anton Korobeynikov f65a638d94 Factor out type info emission into separate routine.
It turned out that ARM wants different layout of type infos.
This is yet another patch in attempt to fix PR7187 

llvm-svn: 168325
2012-11-19 21:06:26 +00:00
Anton Korobeynikov b619a4138d Fix really stupid ARM EHABI info generation bug: we should not emit
eh table and handler data if there are no landing pads in the function.
Patch by Logan Chien with some cleanups from me.

llvm-svn: 167945
2012-11-14 19:13:30 +00:00
Micah Villmow cdfe20b97f Move TargetData to DataLayout.
llvm-svn: 165402
2012-10-08 16:38:25 +00:00
Benjamin Kramer 5be8f60126 Remove unused private member variables uncovered by the recent changes to clang's -Wunused-private-field.
llvm-svn: 160583
2012-07-20 22:05:57 +00:00
Evgeniy Stepanov 33a7e2f2a1 An option to selectively enable part of ARM EHABI support.
This change adds an new option --arm-enable-ehabi-descriptors that
enables emitting unwinding descriptors. This provides a mode with a
working backtrace() without the (currently broken) exception support.

llvm-svn: 148800
2012-01-24 13:05:33 +00:00
Chandler Carruth ed975232bc Revert r148686 (and r148694, a fix to it) due to a serious layering
violation -- MC cannot depend on CodeGen.

Specifically, the MCTargetDesc component of each target is actually
a subcomponent of the MC library. As such, it cannot depend on the
target-independent code generator, because MC itself cannot depend on
the target-independent code generator. This change moved a flag from the
ARM MCTargetDesc file ARMMCAsmInfo.cpp to the CodeGen layer in
ARMException.cpp, leaving behind an 'extern' to refer back to it. That
layering order isn't viable givin the constraints outlined above.
Commandline flags are designed to be static specifically to avoid these
types of bugs.

Fixing this is likely going to require some non-trivial refactoring.

llvm-svn: 148759
2012-01-24 00:30:17 +00:00
Evgeniy Stepanov 482cdc4ebd An option to selectively enable parts of ARM EHABI support.
This change adds an new value to the --arm-enable-ehabi option that
disables emitting unwinding descriptors. This mode gives a working
backtrace() without the (currently broken) exception support.

llvm-svn: 148686
2012-01-23 07:57:39 +00:00
Evan Cheng 76792992d6 Add MCObjectFileInfo and sink the MCSections initialization code from
TargetLoweringObjectFileImpl down to MCObjectFileInfo.

TargetAsmInfo is done to one last method. It's *almost* gone!

llvm-svn: 135569
2011-07-20 05:58:47 +00:00
Evan Cheng 67c033e6b8 Move getInitialFrameState from TargetFrameInfo to MCAsmInfo (suggestions for
better location welcome).

llvm-svn: 135438
2011-07-18 22:29:13 +00:00
Rafael Espindola fc9bae6f8b Replace the -unwind-tables option with a per function flag. This is more
LTO friendly as we can now correctly merge files compiled with or without
-fasynchronous-unwind-tables.

llvm-svn: 132033
2011-05-25 03:44:17 +00:00
Anton Korobeynikov a7ec2dcefd Some first rudimentary support for ARM EHABI: print exception table in "text mode".
llvm-svn: 127099
2011-03-05 18:43:15 +00:00