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Author SHA1 Message Date
David Greene
1251443929 Add AsmPrinter comment flags to machine instructions so that AsmPrinter 
can emit extra information in comments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87018 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 20:21:09 +00:00
David Greene
e55abe5cd0 Add comment flags so AsmPrinter can output additional information when 
emitting comments.  These flags carry semantic information not otherwise
easily derivable from the IR text.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87016 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 20:13:34 +00:00
David Goodwin
12dd99dc30 Rename registers to break output dependencies in addition to anti-dependencies. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87015 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 19:08:21 +00:00
Devang Patel
70d75ca310 "Attach debug info with llvm instructions" mode was enabled a month ago. Now make it permanent and remove old way of inserting intrinsics to encode debug info for line number and scopes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87014 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 19:02:56 +00:00
Dan Gohman
777bdad579 Mark DBG_LABEL, EH_LABEL, and GC_LABEL as not-duplicable, since 
they really are not duplicable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87009 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 18:36:19 +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
Jim Grosbach
80697d1b26 Update TB[BH] layout optimization. Add support for moving the target block 
to directly follow the jump table. Move the layout changes to prior to any
constant island handling.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86999 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 17:25:07 +00:00
Jim Grosbach
cb2c2b738a Clean up testcase a bit. Simplify case blocks and adjust switch instruction to not take an undefined value as input. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86997 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 17:19:09 +00:00
Nuno Lopes
4459145c2c fix crash in my previous patch 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86987 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 15:10:33 +00:00
Nuno Lopes
34e992da38 implement shl, ashr, and lshr methods. shl is not fully implemented as it is quite tricky. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86986 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 14:53:53 +00:00
Benjamin Kramer
9e3728be62 Fix typo in run line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86984 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 12:35:27 +00:00
Gabor Greif
8bedf029f0 typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86980 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 09:44:17 +00:00
Chris Lattner
dbab4dc942 implement a nice little efficiency hack in the inliner. Since we're now 
running IPSCCP early, and we run functionattrs interlaced with the inliner,
we often (particularly for small or noop functions) completely propagate
all of the information about a call to its call site in IPSSCP (making a call
dead) and functionattrs is smart enough to realize that the function is
readonly (because it is interlaced with inliner).

To improve compile time and make the inliner threshold more accurate, realize
that we don't have to inline dead readonly function calls.  Instead, just 
delete the call.  This happens all the time for C++ codes, here are some
counters from opt/llvm-ld counting the number of times calls were deleted vs
inlined on various apps:

Tramp3d opt:
  5033 inline                - Number of call sites deleted, not inlined
 24596 inline                - Number of functions inlined
llvm-ld:
  667 inline           - Number of functions deleted because all callers found
  699 inline           - Number of functions inlined

483.xalancbmk opt:
  8096 inline                - Number of call sites deleted, not inlined
 62528 inline                - Number of functions inlined
llvm-ld:
   217 inline           - Number of allocas merged together
  2158 inline           - Number of functions inlined

471.omnetpp:
  331 inline                - Number of call sites deleted, not inlined
 8981 inline                - Number of functions inlined
llvm-ld:
  171 inline           - Number of functions deleted because all callers found
  629 inline           - Number of functions inlined


Deleting a call is much faster than inlining it, and is insensitive to the
size of the callee. :)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86975 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 07:56:08 +00:00
Evan Cheng
60f9061820 RegScavenger::enterBasicBlock should always reset register state. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86972 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 07:49:10 +00:00
Evan Cheng
586f69a118 - Teach LSR to avoid changing cmp iv stride if it will create an immediate that 
cannot be folded into target cmp instruction.
- Avoid a phase ordering issue where early cmp optimization would prevent the
  later count-to-zero optimization.
- Add missing checks which could cause LSR to reuse stride that does not have
  users.
- Fix a bug in count-to-zero optimization code which failed to find the pre-inc
  iv's phi node.
- Remove, tighten, loosen some incorrect checks disable valid transformations.
- Quite a bit of code clean up.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86969 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 07:35:05 +00:00
Evan Cheng
b9d2c03d20 Use table to separate opcode from operands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86965 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 07:16:34 +00:00
Evan Cheng
06b53c0d51 isLegalICmpImmediate should take a signed integer; code clean up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86964 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 07:13:11 +00:00
Oscar Fuentes
8e3c16917c CMake: Hopefully unbreak the build by mimicking the changes on the 
other build system about the new C_INCLUDE_DIRS configure option.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86960 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 06:48:09 +00:00
Rafael Espindola
7f9ec910a3 Add the --with-c-include-dirs to llvm's configure. 
The clang patch is next.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86955 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 05:46:09 +00:00
Oscar Fuentes
a447cfea45 CMake: Pass -lm to check_symbol_exists for detecting several math 
functions like floorf, ceilf, ... Add test for detecting nearbyintf.

This change was prompted by test/Transforms/SimplifyLibCalls/floor.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86954 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 05:36:09 +00:00
Chris Lattner
66c04c48de use getPredicateOnEdge to fold comparisons through PHI nodes, 
which implements GCC PR18046.  This also gets us 360 more
jump threads on 176.gcc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86953 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 05:24:05 +00:00
Chris Lattner
f496e79f44 various fixes to the lattice transfer functions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86952 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 04:57:13 +00:00
Chris Lattner
0e0ff29271 switch jump threading to use getPredicateOnEdge in one place 
making the new LVI stuff smart enough to subsume some special
cases in the old code.  Disable them when LVI is around, the
testcase still passes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86951 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 04:37:50 +00:00
Chris Lattner
b52675b643 Add a new getPredicateOnEdge method which returns more rich information for 
constant constraints.  Improve the LVI lattice to include inequality 
constraints.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86950 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 04:36:58 +00:00
Jim Grosbach
7707a0df5b Move the utility function UpdateTerminator() from CodePlacementOpt() into 
MachineBasicBlock so other passes can utilize it.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86947 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 03:55:33 +00:00
Jim Grosbach
01dec0e545 Revert 86857. It's causing consumer-typeset to fail, and there's a better way to do it forthcoming anyway. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86945 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 03:28:35 +00:00
Eric Christopher
116664a697 Use stubs when we have them, otherwise use code we already have, 
otherwise create a stub.

Add a test to make sure we don't create extraneous stubs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86941 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 03:12:18 +00:00
Daniel Dunbar
dfa9261f68 Add the braces gcc suggested. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86933 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 02:52:56 +00:00
Nick Lewycky
ad108baf47 Add CreateNUWAdd and CreateNUWSub to complement the existing CreateNSWAdd and 
CreateNSWSub functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86930 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 02:08:11 +00:00
Chris Lattner
3e04a05672 should not commit when distracted. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86929 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 02:04:17 +00:00
Dan Gohman
72b2990a74 Make the BranchFolderPass class local to BranchFolding.cpp. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86928 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 01:59:26 +00:00
Chris Lattner
a5810add9c We now thread some impossible condition information with LVI. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86927 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 01:55:20 +00:00
Dan Gohman
8520149db1 Minor code cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86926 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 01:51:28 +00:00
Chris Lattner
87e9f59c7a with the new code we can thread non-instruction values. This 
allows us to handle the test10 testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86924 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 01:41:34 +00:00
Chris Lattner
1c96b4187b this argument can be an arbitrary value, it doesn't need to be an instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86923 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 01:37:43 +00:00
Chris Lattner
38392bbeb8 expose edge information and switch j-t to use it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86920 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 01:29:10 +00:00
Lang Hames
f035ce58bc Fixed an iteration condition in PreAllocSplitting. This should fix some miscompilations casued by PreAllocSplitting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86919 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 01:24:08 +00:00
Chris Lattner
b8c124c343 move some stuff into DEBUG's and turn on lazy-value-info for 
the basic.ll testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86918 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 01:22:16 +00:00
Eric Christopher
5cf0aedd0b Fix typo, cleanup whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86917 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 01:06:08 +00:00
Devang Patel
afa5a34b30 Do not use StringRef in DebugInfo interface. 
This allows StringRef to skip controversial if(str) check in constructor.
Buildbots, wait for corresponding clang and llvm-gcc FE check-ins!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86914 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 00:50:58 +00:00
Dan Gohman
ad6af45dc1 Tail merge at any size when there are two potentials blocks and one 
can be made to fall through into the other.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86909 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-12 00:39:10 +00:00
Bill Wendling
73b5551058 Don't mark a call as potentially throwing if the function it's calling has the 
"nounwind" attribute.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86897 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-11 23:17:02 +00:00
Bruno Cardoso Lopes
9089ba8e5e A real solution for the first part of PR5445 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86895 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-11 23:09:33 +00:00
Chris Lattner
1697652922 make LazyValueInfo actually to some stuff. This isn't very tested but improves 
strswitch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86889 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-11 22:48:44 +00:00
Chris Lattner
2ad00bf99d pass TD into a SimplifyCmpInst call. Add another case that 
uses LVI info when -enable-jump-threading-lvi is passed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86886 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-11 22:31:38 +00:00
Dan Gohman
ffe644ebf4 Promote MergePotentialsElt and SameTailElt to be regular classes 
instead of typedefs for std::pair. This simplifies the type of
SameTails, which previously was std::vector<std::pair<std::vector<std::pair<unsigned, MachineBasicBlock *> >::iterator, MachineBasicBlock::iterator>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86885 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-11 21:57:02 +00:00
Kenneth Uildriks
c158dde219 x86 users can now return arbitrary sized structs. Structs too large to fit in return registers will be returned through a hidden sret parameter introduced during SelectionDAG construction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86876 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-11 19:59:24 +00:00
Dan Gohman
7cc253e3b8 Revert this line of 86871. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86875 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-11 19:56:05 +00:00
Devang Patel
3380cc5307 If doesSupportDebugInformation() is false then do not try to emit dwarf debug info. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86874 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-11 19:55:08 +00:00
Dan Gohman
412a3b90d1 Check in the changes to this file too. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86873 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-11 19:49:34 +00:00