Commit Graph

140 Commits

Author SHA1 Message Date
Bill Wendling
7750c3fc9f Add a constified getLandingPad() method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149303 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-31 00:26:24 +00:00
Eli Friedman
d7e5264b46 Remove useless code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142570 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-20 04:33:44 +00:00
Bill Wendling
c1dbf0cdb4 Remove unneeded sentence.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137854 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-17 19:33:27 +00:00
Bill Wendling
d2e103daf8 Add getFirstInsertionPt() method.
getFirstInsertionPt() returns an iterator to the first insertion point in a
basic block. This is after all PHIs and any other instruction which is required
to be at the top of the basic block (like LandingPadInst).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137744 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-16 20:42:52 +00:00
Bill Wendling
e6e8826870 Initial commit of the 'landingpad' instruction.
This implements the 'landingpad' instruction. It's used to indicate that a basic
block is a landing pad. There are several restrictions on its use (see
LangRef.html for more detail). These restrictions allow the exception handling
code to gather the information it needs in a much more sane way.

This patch has the definition, implementation, C interface, parsing, and bitcode
support in it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137501 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-12 20:24:12 +00:00
Rafael Espindola
77a2c372fa Add r134057 back, but splice the predecessor after the successors phi
nodes.

Original message:
Let simplify cfg simplify bb with only debug and lifetime intrinsics.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134182 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-30 20:14:24 +00:00
Chad Rosier
ce77aa3edc Temporarily revert r134057: "Let simplify cfg simplify bb with only debug and
lifetime intrinsics" due to buildbot failures.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134071 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-29 16:22:11 +00:00
Rafael Espindola
0fb7dcd48f Let simplify cfg simplify bb with only debug and lifetime intrinsics.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134057 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-29 05:25:47 +00:00
Jay Foad
95c3e48f95 Reinstate r133513 (reverted in r133700) with an additional fix for a
-Wshorten-64-to-32 warning in Instructions.h.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133708 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-23 09:09:15 +00:00
Eric Christopher
e59fbc04ad Revert r133513:
"Reinstate r133435 and r133449 (reverted in r133499) now that the clang
self-hosted build failure has been fixed (r133512)."

Due to some additional warnings.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133700 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-23 06:24:52 +00:00
Jay Foad
cd35e09a4a Reinstate r133435 and r133449 (reverted in r133499) now that the clang
self-hosted build failure has been fixed (r133512).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133513 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-21 10:33:19 +00:00
Chad Rosier
a88a0ca808 Revert r133435 and r133449 to appease buildbots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133499 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-21 02:09:03 +00:00
Jay Foad
72f5f313d8 Change how PHINodes store their operands.
Change PHINodes to store simple pointers to their incoming basic blocks,
instead of full-blown Uses.

Note that this loses an optimization in SplitCriticalEdge(), because we
can no longer walk the use list of a BasicBlock to find phi nodes. See
the comment I removed starting "However, the foreach loop is slow for
blocks with lots of predecessors".

Extend replaceAllUsesWith() on a BasicBlock to also update any phi
nodes in the block's successors. This mimics what would have happened
when PHINodes were proper Users of their incoming blocks. (Note that
this only works if OldBB->replaceAllUsesWith(NewBB) is called when
OldBB still has a terminator instruction, so it still has some
successors.)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133435 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-20 14:38:01 +00:00
Bill Wendling
5d7a5a4f53 Revert r129235 pending a vetting of the EH rewrite.
--- Reverse-merging r129235 into '.':
D    test/Feature/bb_attrs.ll
U    include/llvm/BasicBlock.h
U    include/llvm/Bitcode/LLVMBitCodes.h
U    lib/VMCore/AsmWriter.cpp
U    lib/VMCore/BasicBlock.cpp
U    lib/AsmParser/LLParser.cpp
U    lib/AsmParser/LLLexer.cpp
U    lib/AsmParser/LLToken.h
U    lib/Bitcode/Reader/BitcodeReader.cpp
U    lib/Bitcode/Writer/BitcodeWriter.cpp



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129259 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-10 23:18:04 +00:00
Bill Wendling
d7bb295d22 Beginning of the Great Exception Handling Rewrite.
* Add a "landing pad" attribute to the BasicBlock.
* Modify the bitcode reader and writer to handle said attribute.

Later: The verifier will ensure that the landing pad attribute is used in the
appropriate manner. I.e., not applied to the entry block, and applied only to
basic blocks that are branched to via a `dispatch' instruction.

(This is a work-in-progress.)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129235 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-10 00:04:27 +00:00
Michael J. Spencer
1f6efa3996 Merge System into Support.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120298 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-29 18:16:10 +00:00
Dale Johannesen
7249ef0455 Skip debug info when looking for existing EH calls at the
beginning of a block.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100230 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-02 21:49:27 +00:00
Chris Lattner
5a96f93573 sink twine.h down out of Value.h. It is annoying that you need
to #include Twine.h just to give a twine a default value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92247 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-29 07:12:03 +00:00
Chris Lattner
cafe9bba32 add a layer of accessors around the Value::SubClassData member, and use
a convention (shadowing the setter with private forwarding function) to
prevent subclasses from accidentally using it.

This exposed some bogosity in ConstantExprs, which was propaging the
opcode of the constant expr into the NUW/NSW/Exact field in the
getWithOperands/getWithOperandReplaced methods.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92239 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-29 02:14:09 +00:00
Benjamin Kramer
7f82fdb9bc Silence a warning on targets with unsigned chars.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87002 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-12 17:59:45 +00:00
Chris Lattner
4a7642ec9c the verifier shouldn't modify the IR.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85722 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01 18:11:50 +00:00
Chris Lattner
660a4f389c fix an issue where the verifier would reject a function whose entry
block had its address taken even if the blockaddress was dead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85706 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01 04:08:01 +00:00
Chris Lattner
3821176b2e make hasAddressTaken() constant time by storing a refcount in BB's subclass data.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85625 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-30 22:33:29 +00:00
Dan Gohman
eeb8ef1f37 Add a hasAddressTaken for BasicBlock.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85449 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-29 00:09:08 +00:00
Chris Lattner
6d013fc381 basic blocks can now have non-instruction users.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85365 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28 03:36:44 +00:00
Chandler Carruth
8b67f774e9 Move DataTypes.h to include/llvm/System, update all users. This breaks the last
direct inclusion edge from System to Support.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85086 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26 01:35:46 +00:00
Dan Gohman
dc404a23ca Add a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80749 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-02 01:14:16 +00:00
Gabor Greif
7309be6735 Remove all the LLVM_COMPACTIFY_SENTINELS-related macro magic as discussed with Chris on IRC. Anybody wanting to debug sentinel dereferencing problems must revert this patch and perform the indicated modifications.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80128 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-26 19:16:32 +00:00
Gabor Greif
2600ca8b3f re-committing yesterday's r79938.
This time there is no additional include of llvm/Config/config.h
at all. Instead I use a hard-coded preprecessor symbol:
LLVM_COMPACTIFY_SENTINELS

(should this work on the self-hosting buildbot, then
 cleanups come next)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80035 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-25 21:25:22 +00:00
Bill Wendling
f63097f223 --- Reverse-merging r79938 into '.':
U    include/llvm/BasicBlock.h
U    include/llvm/ADT/ilist_node.h
U    include/llvm/ADT/ilist.h
U    include/llvm/CodeGen/SelectionDAG.h
U    include/llvm/CodeGen/MachineFunction.h
U    include/llvm/CodeGen/MachineBasicBlock.h
U    include/llvm/Function.h

Revert r79938. It was causing self-hosting build failures.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79960 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-25 00:05:04 +00:00
Gabor Greif
fd7a918e58 Resubmit an earlier patch of mine:
reduce the size of relevant "ghostly" sentinels
by a pointer.

This attempt now makes the compactification dependent
on the configure variable LLVM_COMPACT_SENTINELS
and should not cause any bootstrap failures for
llvm-gcc any more.

Please note that this is not yet the final version,
and (as settled with Chris) I shall take out the
autofoo/cmake portions in the next days.

This will also lose the assertability on sentinel
dereferencing and operator++, but that seems
an acceptable price to pay for the simplified
build logic.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79938 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-24 21:34:17 +00:00
Erick Tryzelaar
f7e8b5c722 BasicBlock::getContext can no longer return a NULL so update the doc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79432 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-19 17:40:05 +00:00
Owen Anderson
1d0be15f89 Push LLVMContexts through the IntegerType APIs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78948 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-13 21:58:54 +00:00
Benjamin Kramer
12ddd40953 Make LLVMContext and LLVMContextImpl classes instead of structs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78690 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11 17:45:13 +00:00
Owen Anderson
48b2f3e485 Factor some of the constants+context related code out into a separate header, to make LLVMContextImpl.h
not hideous.  Also, fix some MSVC compile errors.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78115 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-04 22:41:48 +00:00
Daniel Dunbar
6e0d1cb309 Initial update to VMCore to use Twines for string arguments.
- The only meat here is in Value.{h,cpp} the rest is essential 'const
   std::string &' -> 'const Twine &'.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77048 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-25 04:41:11 +00:00
Owen Anderson
e922c02019 Get rid of the Pass+Context magic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76702 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22 00:24:57 +00:00
Owen Anderson
07cf79ef53 "LLVMContext* " --> "LLVMContext *"
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74878 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-06 23:00:19 +00:00
Owen Anderson
0a205a4598 More LLVMContext-ification.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74807 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-05 22:41:43 +00:00
Dan Gohman
9c01f2dd0b Revert r67844. This fixes the llvm-gcc-4.2 build on Darwin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67856 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-27 18:37:13 +00:00
Duncan Sands
76d3838454 Reapply r66415, which was reverted in r66426 for
causing a bootstrap failure.  Bootstraps here on
x86-32-linux and x86-64-linux.  Requested by the
author Gabor Greif who says that a bug that might
have been causing the failure has since been fixed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67844 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-27 15:29:38 +00:00
Bill Wendling
9aaa0796ad Revert r66415. It's causing failures during bootstrap builds:
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://developer.apple.com/bugreporter> for instructions.
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmgcc42.roots/llvmgcc42~obj/src/gcc/libgcc2.c: In function '__muldi3':
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmgcc42.roots/llvmgcc42~obj/src/gcc/libgcc2.c:567: internal compiler error: Bus error
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://developer.apple.com/bugreporter> for instructions.
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmgcc42.roots/llvmgcc42~obj/src/gcc/libgcc2.c: In function '__lshrdi3':
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmgcc42.roots/llvmgcc42~obj/src/gcc/libgcc2.c:421: internal compiler error: Bus error
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://developer.apple.com/bugreporter> for instructions.
make[5]: *** [libgcc/./_lshrdi3.o] Error 1
make[5]: *** Waiting for unfinished jobs....
make[5]: *** [libgcc/./_muldi3.o] Error 1
make[5]: *** [libgcc/./_negdi2.o] Error 1


--- Reverse-merging (from foreign repository) r66415 into '.':
U    include/llvm/BasicBlock.h
U    include/llvm/ADT/ilist_node.h
U    include/llvm/CodeGen/SelectionDAG.h
U    include/llvm/CodeGen/MachineFunction.h
U    include/llvm/CodeGen/MachineBasicBlock.h
U    include/llvm/Function.h



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66426 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-09 18:01:33 +00:00
Gabor Greif
5c3e7b1718 in builds without asserts we do not need to allocate the Next pointer in "ghostly" sentinels
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66415 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-09 07:09:01 +00:00
Gabor Greif
0dd2a6a89f simplify the way how traits get hold of the symbol table
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66336 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-07 12:33:24 +00:00
Gabor Greif
7afd3e1599 further simplifications arising from peruse of the more declarative interface
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66333 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-07 10:49:57 +00:00
Gabor Greif
b547a18100 Remove the burden of dealing with list offsets
from SymbolTableListTraits' clients, and
intead request a nice declarative interface.
Cleans up an IMHO ugly wart.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66331 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-07 10:00:35 +00:00
Gabor Greif
f3841fcbd5 ooops, forgot to include the pointless-write eliminator in my previous checkin
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66081 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-04 21:54:31 +00:00
Gabor Greif
c23b8719ef Give sentinel traits the right to determine the policy where the sentinel is kept.
This should result in less indirect memory accesses, less dead writes and tighter code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66061 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-04 20:36:44 +00:00
Dan Gohman
12f7cab423 Make a comment less terse.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65953 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-03 17:44:54 +00:00
Gabor Greif
1012919ed8 Declare Sentinel fragments as mutable to get rid
of some pointless casting. This fragment logically
does not belong to ilist anyway, but to "ghostly"
NodeType.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65843 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-02 14:47:45 +00:00