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5647 Commits

Author SHA1 Message Date
Chris Lattner
3e089ae0b8 reimplement dfs number computation to be significantly faster. This speeds up 
natural loop canonicalization (which does many cfg xforms) by 4.3x, for 
example.  This also fixes a bug in postdom dfnumber computation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40920 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-08 05:51:24 +00:00
Evan Cheng
8df786012d - Each val# can have multiple kills. 
- Fix some minor bugs related to special markers on val# def. ~0U means
  undefined, ~1U means dead val#.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40916 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-08 03:00:28 +00:00
Evan Cheng
a8d94f1315 - LiveInterval value#'s now have 3 components: def instruction #, 
kill instruction #, and source register number (iff the value# is defined by a
copy).
- Now def instruction # is set for every value#, not just for copy defined ones.
- Update some outdated code related inactive live ranges.
- Kill info not yet set. That's next patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40913 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-07 23:49:57 +00:00
Devang Patel
a9e9286630 Fix comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40911 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-07 23:16:03 +00:00
Owen Anderson
371d68958f Get rid of unnecessary #include. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40885 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-07 00:38:16 +00:00
Owen Anderson
dbbe816757 Clean up a bunch of caching stuff in memdep. This reduces the time to run GVN 
on 403.gcc from ~15s to ~10s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40884 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-07 00:33:45 +00:00
Devang Patel
fee76bd9ba Begin loop index split pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40883 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-07 00:25:56 +00:00
Chris Lattner
6f427580e0 remove #if 0 code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40880 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-06 22:03:19 +00:00
Chris Lattner
731a5f1f94 remove #if 0 code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40879 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-06 22:01:53 +00:00
Chandler Carruth
b1183c1ff3 This fixes resizing issues with BitVectors. It ensures that the BitWord type and type size is always used, and ensures completely correct clearing of unused high bits, and setting of bits when resizing. It should resolve PR1563. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40871 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-06 20:52:17 +00:00
Reid Spencer
7409cabc3e @verbatim needs to be on a line by itself. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40865 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-06 17:10:29 +00:00
Christopher Lamb
98363225a3 Implement review feedback. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40863 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-06 16:33:56 +00:00
Chris Lattner
c385ae6ff5 Various random cleanups, add two accessors to DomTreeNode: getDFSNumIn/getDFSNumOut 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40856 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-06 06:15:43 +00:00
Reid Spencer
181b6c9cb5 Fix minor doxygen nits. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40854 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-05 20:06:04 +00:00
Reid Spencer
f094f81d36 Document a missing parameter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40852 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-05 19:36:39 +00:00
Chris Lattner
7b54452c84 Fix a bug in DenseMap::clear, where we never reset a tombstone 
to EmptyKey.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40839 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-05 08:43:36 +00:00
Chris Lattner
42e4bdf257 When clearing a SmallPtrSet, if the set had a huge capacity, but the 
contents of the set were small, deallocate and shrink the set.  This
avoids having us to memset as much data, significantly speeding up
some pathological cases.  For example, this speeds up the verifier
from 0.3899s to 0.0763 (5.1x) on the testcase from PR1432 in a 
release build.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40837 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-05 07:32:14 +00:00
Chris Lattner
e93e311981 Switch the internal "Info" map from an std::map to a DenseMap. This 
speeds up idom by about 45% and postidom by about 33%.

Some extra precautions must be taken not to invalidate densemap iterators.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40827 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-05 00:02:00 +00:00
Chris Lattner
0a5f83c22c switch the DomTreeNodes and IDoms maps in idom/postidom to a 
DenseMap instead of an std::map.  This speeds up postdomtree
by about 25% and domtree by about 23%.  It also speeds up clients,
for example, domfrontier by 11%, mem2reg by 4% and ADCE by 6%.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40826 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-04 23:48:07 +00:00
Chandler Carruth
6994040a95 This is the patch to provide clean intrinsic function overloading support in LLVM. It cleans up the intrinsic definitions and generally smooths the process for more complicated intrinsic writing. It will be used by the upcoming atomic intrinsics as well as vector and float intrinsics in the future. 
This also changes the syntax for llvm.bswap, llvm.part.set, llvm.part.select, and llvm.ct* intrinsics. They are automatically upgraded by both the LLVM ASM reader and the bitcode reader. The test cases have been updated, with special tests added to ensure the automatic upgrading is supported.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40807 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-04 01:51:18 +00:00
Dale Johannesen
e713d9340a long double patch 3 of N. Add to MVT. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40793 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-03 20:51:37 +00:00
Dale Johannesen
320fc8a39e Long double, part 1 of N. Support in IR. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40774 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-03 01:03:46 +00:00
Anders Carlsson
bfbfcdafbe Fix bug spotted by Chris. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40725 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-02 06:05:19 +00:00
Anders Carlsson
7ccd9ec4f4 Add extend and extOrTrunc methods that do sign or zero extension depending on whether the integer is signed or not 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40724 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-02 06:00:13 +00:00
Evan Cheng
33d5595d66 Do not emit copies for physical register output if it's not used. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40722 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-02 05:29:38 +00:00
Evan Cheng
8409747efa Instead of adding copyfromreg's to handle physical definitions. Now isel can 
simply specify them as results and let scheduledag handle them. That
is, instead of
SDOperand Flag = DAG.getTargetNode(Opc, MVT::i32, MVT::Flag, ...)
SDOperand Result = DAG.getCopyFromReg(Chain, X86::EAX, MVT::i32, Flag)

Just write:
SDOperand Result = DAG.getTargetNode(Opc, MVT::i32, MVT::i32, ...)

And let scheduledag emit the move from X86::EAX to a virtual register.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40710 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-02 00:28:15 +00:00
Evan Cheng
b5910820ce Added TargetInstrDescriptor::numDefs - num of results. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40709 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-02 00:20:17 +00:00
Owen Anderson
9066020993 Make non-local memdep not be recursive, and fix a bug on 403.gcc that this exposed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40692 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-01 22:01:54 +00:00
Dan Gohman
c2bbfc18e9 More explicit keywords. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40673 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-01 15:32:29 +00:00
Dan Gohman
e819ff70f7 Make ImmutablePass::runOnModule non-virtual, since it is not 
intended to be overridden.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40671 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-01 14:28:20 +00:00
Owen Anderson
f6a05f949f Rename FastDSE to just DSE. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40668 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-01 06:36:51 +00:00
David Greene
52eec54820 New CallInst interface to address GLIBCXX_DEBUG errors caused by 
indexing an empty std::vector.

Updates to all clients.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40660 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-01 03:43:44 +00:00
David Greene
df464195fe Fix GLIBCXX_DEBUG error owing to dereference of end iterator. There's 
no guarantee that an instruction returned by getDependency exists in
the maps.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40647 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-31 20:01:27 +00:00
Devang Patel
c7e49c08c2 Introduce Simple Analysis interface for loop passes. 
Right now, this interface provides hooks for only to operations, 1) clone basic block 2) delete value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40625 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-31 08:00:57 +00:00
Anton Korobeynikov
3b30a6e92d Add detection of __dso_handle presence during configure. Use this information in the 
JITer (short path is added for darwin). This is needed to properly JIT llvm-gcc-4.2-built
binaries, since cxa_atexit is enabled by default on much more targets.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40600 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-30 20:02:02 +00:00
Dan Gohman
06dd2a68e1 Fix the comments for the 'fast' parameter in addPassesToEmitFile. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40592 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-30 15:04:59 +00:00
Dan Gohman
fb71d38247 Fix the comment for getClosestTargetForJIT to reflect the fact that 
it does not have a Module parameter.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40590 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-30 14:58:59 +00:00
Dan Gohman
f452207d20 More explicit keywords. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40589 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-30 14:51:59 +00:00
Dan Gohman
209ee187c9 Fix pastos in comments for doFinalization functions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40588 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-30 14:51:13 +00:00
Devang Patel
19fe8f907e Add facility to dump pass manager structure 
to make it easier to understand failure.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40567 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-27 20:06:09 +00:00
Devang Patel
29381fb7cd Use SmallPtrSet. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40560 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-27 18:34:27 +00:00
Owen Anderson
e992a56ae9 Allow SmallPtrSet to hold pointers to const data. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40556 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-27 18:07:02 +00:00
Duncan Sands
36397f5034 Support for trampolines, except for X86 codegen which is 
still under discussion.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40549 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-27 12:58:54 +00:00
Christopher Lamb
bab2474b64 Add a MachineFunction pass, which runs post register allocation, that turns subreg insert/extract instruction into register copies. This ensures correct code gen if the coalescer isn't able to remove all subreg instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40521 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-26 08:18:32 +00:00
Christopher Lamb
e24f8f1ec9 Teach DAG scheduling how to properly emit subreg insert/extract machine instructions. PR1350 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40520 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-26 08:12:07 +00:00
Christopher Lamb
1367fd09cb Have register info provide the inverse mapping of register->superregisters. PR1350 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40519 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-26 08:01:58 +00:00
Christopher Lamb
08d52071ba Add target independent MachineInstr's to represent subreg insert/extract in MBB's. PR1350 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40518 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-26 07:48:21 +00:00
Christopher Lamb
557c3631d3 Add selection DAG nodes for subreg insert/extract. PR1350 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40516 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-26 07:34:40 +00:00
Christopher Lamb
f0006127b3 Fix 80 col violation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40515 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-26 07:03:08 +00:00
Christopher Lamb
6f95014158 Remove subreg index from MachineInstr's and also keep vregs as unsigned when adding operands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40514 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-26 07:00:46 +00:00
Christopher Lamb
9e1e81ccbe Fix comments for new types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40507 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-26 01:48:57 +00:00
Christopher Lamb
1fcc4b2ba8 Add support for 3 element 32-bit vector ValueTypes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40506 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-26 01:46:52 +00:00
Evan Cheng
73a259a9d1 EmitAlignment() also emits optional fill value. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40500 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-25 23:35:07 +00:00
Owen Anderson
02d6852a1c Forgot to include this file in my last commit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40496 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-25 21:30:15 +00:00
Owen Anderson
0cd320362e Add basic support for performing whole-function RLE. 
Note: This has not yet been thoroughly tested.  Use at your own risk.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40489 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-25 19:57:03 +00:00
Devang Patel
6899b31422 Add BasicInliner interface. 
This interface allows clients to inline bunch of functions with module
level call graph information.:wq



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40486 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-25 18:00:25 +00:00
Dan Gohman
dc9b3d0bb5 Add const to CanBeFoldedBy, CheckAndMask, and CheckOrMask. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40480 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-24 23:00:27 +00:00
Owen Anderson
4beedbd006 Add initial support for non-local memory dependence analysis. 
NOTE: This has only been cursorily tested.  Expected improvements soon.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40476 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-24 21:52:37 +00:00
Owen Anderson
1ad2cb7555 Add a GVN pass, using the value numbering code I developed for GVNPRE and the 
load elimination code from RedundantLoadElimination.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40469 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-24 17:55:58 +00:00
Owen Anderson
a7f98e2919 Rename a lot of things to change FastDLE to RedundantLoadElimination. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40457 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-24 00:17:04 +00:00
Owen Anderson
fb80b6e056 Forgot to commit this file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40447 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-23 22:00:03 +00:00
Owen Anderson
48a19fb884 Fix a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40446 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-23 21:51:37 +00:00
Owen Anderson
ffe40aa97d Add FastDLE, the load-elimination counterpart of FastDSE. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40445 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-23 21:48:08 +00:00
Bill Wendling
6a20cf0776 Add missing SSE builtins: 
__builtin_ia32_cvtss2si64
    __builtin_ia32_cvttss2si64
    __builtin_ia32_cvtsi642ss
    __builtin_ia32_cvtsd2si64
    __builtin_ia32_cvttsd2si64
    __builtin_ia32_cvtsi642sd


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40411 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-23 03:07:27 +00:00
Chris Lattner
c6402013c8 Disable the string map copy ctor and assignment operators, 
they don't do the right thing.  

Implement StringMap::erase.

Fix a nasty bug in the default ctor.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40395 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-22 20:08:01 +00:00
Dan Gohman
c674a924d4 Don't assume that only Uses can be kills. Defs are marked as kills initially 
when there are no uses. This fixes a dangling-pointer bug, where pointers to
deleted instructions were not removed from kills lists. More info here:
http://lists.cs.uiuc.edu/pipermail/llvmdev/2007-July/009749.html


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40131 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-20 23:17:34 +00:00
Dan Gohman
b1d1f7a035 Simplify the logic for setVolatile. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40130 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-20 23:14:50 +00:00
Evan Cheng
8bd6035750 Added -print-emitted-asm to print out JIT generated asm to cerr. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40123 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-20 21:56:13 +00:00
Owen Anderson
398b40671b Make the heuristic for shrinking DenseMap smarter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40114 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-20 18:56:46 +00:00
Devang Patel
edbef38067 Use SmallVector instead of std::vector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40109 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-20 18:04:54 +00:00
Owen Anderson
6ad5fde5d0 Have DenseMap auto-shrink itself on clear(). This improves the time to optimize 
403.gcc from 15.2s to 14.3s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40100 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-20 16:15:24 +00:00
Devang Patel
58e0ef1e90 Verify loop info. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40062 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-19 18:02:32 +00:00
Anton Korobeynikov
6b8337392c Properly initialize value :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40059 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-19 15:32:47 +00:00
Devang Patel
9750b5d577 Set up ground work to verify preserved analysis info. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40039 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-19 05:36:09 +00:00
Dan Gohman
6ab2d18f5e Add constructor overloads for LoadInst and StoreInst that insert at the 
end of a BasicBlock and have an alignment parameter.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40016 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-18 20:51:11 +00:00
Reid Spencer
845b31de0c Unbreak the build by putting calls to free into the implementation file and 
having that implementation file #include <cstdlib>.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39952 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-17 02:16:12 +00:00
Owen Anderson
faac518ce0 Add support for walking up memory def chains, which enables finding many more 
dead stores on 400.perlbench.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39929 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-16 21:52:50 +00:00
Owen Anderson
1629a1fa87 Use realloc() to (potentially) resize the contents of SmallPtrSet in place. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39926 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-16 21:27:44 +00:00
Dan Gohman
07a96765da Fix comments about vectors to use the current wording. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39921 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-16 14:29:03 +00:00
Nick Lewycky
eefdebe002 Handle decrementing loops properly. Fixes PR1533. 
Always pass the constant as the second parameter to HowManyLessThans.

Remove obsolete "isSigned" parameter.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39893 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-16 02:08:00 +00:00
Chris Lattner
f7b71c64cf add a helper method. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39885 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-15 23:32:03 +00:00
Nick Lewycky
28753f8df2 Clarify the language. Pointed out by Duncan Sands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39857 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-14 17:41:03 +00:00
Anton Korobeynikov
2365f51ed0 Long live the exception handling! 
This patch fills the last necessary bits to enable exceptions
handling in LLVM. Currently only on x86-32/linux.

In fact, this patch adds necessary intrinsics (and their lowering) which
represent really weird target-specific gcc builtins used inside unwinder.

After corresponding llvm-gcc patch will land (easy) exceptions should be
more or less workable. However, exceptions handling support should not be 
thought as 'finished': I expect many small and not so small glitches
everywhere.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39855 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-14 14:06:15 +00:00
Nick Lewycky
377b1190cb Add alternate ConstantRange intersection algorithm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39851 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-14 02:51:34 +00:00
Devang Patel
b4559a2179 Make LCSSA a loop pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39844 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-13 23:57:11 +00:00
Dale Johannesen
e7e7d0d7e3 Skeleton of post-RA scheduler; doesn't do anything yet. 
Change name of -sched option and DEBUG_TYPE to
pre-RA-sched; adjust testcases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39816 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-13 17:13:54 +00:00
Reid Spencer
96cf58777b Regenerate to pick up Gabor's changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39802 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-13 10:05:30 +00:00
Tanya Lattner
08d14d2469 Adding ability to demote phi to stack. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39744 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-11 18:41:34 +00:00
Owen Anderson
b77c457cc8 Add FastDSE, a new algorithm for doing dead store elimination. This algorithm is not as accurate 
as the current DSE, but it only a linear scan over each block, rather than quadratic.  Eventually
(once it has been improved somewhat), this will replace the current DSE.

NOTE: This has not yet been extensively tested.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38517 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-11 00:46:18 +00:00
Evan Cheng
ed80ef6089 Add OptionalDefOperand. Remove clobbersPred. Also add DefinesPredicate to be used by if-converter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38499 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-10 18:06:29 +00:00
Owen Anderson
5f32320797 Add support for finding the dependencies of call and invoke instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38497 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-10 17:59:22 +00:00
Owen Anderson
6b278fc786 Fix a bunch of things from Chris' feedback 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38493 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-10 17:08:11 +00:00
Evan Cheng
af825c840e When a node value is only used by a CopyToReg, use the user's dest. This should not be restricted to nodes that produce only a single value. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38485 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-10 07:08:32 +00:00
Evan Cheng
c63d391c9a Move DenseMapKeyInfo<SDOperand> from LegalizeDAG.cpp to SelectionDAGNodes.h 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38484 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-10 06:59:55 +00:00
Owen Anderson
c5c7f755c8 Evidently my earlier fix did not go far enough. When resizing a zero-sized 
BitVector, make sure to set or clear ALL of the bits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38481 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-10 02:01:16 +00:00
Owen Anderson
0c81450a0c When resizing a BitVector with size 0, be sure to clear the low word before using it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38476 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-09 23:39:39 +00:00
Devang Patel
ff366850aa Expose struct size threhold to allow users to tweak their own setting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38472 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-09 21:19:23 +00:00
Owen Anderson
4d6f96d699 Make the assignment operator for SmallPtrSet return a reference, and fix a long-standing bug in the copy 
ctor while I'm at it.

Thanks to Chris Lattner for help with this patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38470 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-09 20:59:01 +00:00
Devang Patel
b42295df4d Fix memory leak. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38469 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-09 20:52:39 +00:00
Chris Lattner
95fd3189f8 work around an aparent gcc name resolution bug by 
detemplatizing this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38461 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-09 17:11:53 +00:00