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Author SHA1 Message Date
Dan Gohman
d890f29ca6 Move the EliminateIVUsers call back out to its original location. Now that 
a ScalarEvolution bug with overflow handling is fixed, the normal analysis
code will automatically decline to operate on the icmp instructions which
are responsible for the loop exit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101032 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-12 07:56:56 +00:00
Dan Gohman
27dead44e0 Generalize ScalarEvolution's PHI analysis to handle loops that don't 
have preheaders or dedicated exit blocks, as clients may not otherwise
need to run LoopSimplify.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101030 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-12 07:49:36 +00:00
Dan Gohman
646e047765 Rewrite the overflow checking in the get{Signed,Unsigned}Range code for 
AddRecs so that it checks for overflow in the computation that it is
performing, rather than just checking hasNo{Signed,Unsigned}Wrap, since
those flags are for a different computation. This fixes a bug that
impacts an upcoming change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101028 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-12 07:39:33 +00:00
Dan Gohman
dd842e34c8 Use RecursivelyDeleteTriviallyDeadInstructions in EliminateIVComparisons, 
instead of deleting just the user. This makes it more consistent with
other code in IndVarSimplify, and theoretically can eliminate more users
earlier.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101027 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-12 07:29:15 +00:00
Evan Cheng
09010a30fd Enable post regalloc machine licm by default. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101023 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-12 06:25:28 +00:00
Nick Lewycky
22ff748712 Remove use of exceptions from bugpoint. No deliberate functionality change! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101013 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-12 05:08:25 +00:00
Eric Christopher
67a71b5306 Verify function prototypes before trying to optimize functions. We also 
need TargetData, just return false if we don't have it.

Update testcases accordingly.

Fixes PR6807.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101011 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-12 04:48:00 +00:00
Dan Gohman
58c2587ed8 Remove unnecessary parens. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101010 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-12 02:24:01 +00:00
Dan Gohman
ce80051170 Minor code simplification. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101009 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-12 02:22:30 +00:00
Dan Gohman
931e345e76 Re-apply r101000, with a fix: Don't eliminate an icmp which is part of 
the loop exit test. This usually doesn't come up for a variety of
reasons, but it isn't impossible, so make IndVarSimplify handle it
conservatively.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101008 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-12 02:21:50 +00:00
Chris Lattner
17e8b7fbde whether we enable dylibs or not depends on the host, not the target. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101007 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-12 02:21:38 +00:00
Dan Gohman
ac3b9cdf15 Revert 101000, which is breaking self-host builds. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101002 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-12 00:17:10 +00:00
Dan Gohman
5ee60f7508 Fix indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101001 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-11 23:44:58 +00:00
Dan Gohman
3fddbb337d Teach IndVarSimplify how to eliminate comparisons involving induction 
variables. For example, with code like this:

  for (i=0;i<n;++i)
    if (i<n)
      x[i] = 0;

IndVarSimplify will now recognize that i is always less than n inside
the loop, and eliminate the if.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101000 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-11 23:10:12 +00:00
Dan Gohman
53c66eacc4 Enhance ScalarEvolution::isKnownPredicate with support for 
loop conditions which are invariants.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100995 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-11 22:16:48 +00:00
Dan Gohman
b64cf896f8 Minor code simplification. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100994 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-11 22:13:11 +00:00
Dan Gohman
bc7129f9db When creating a ConstantRange for [n,UINT_MAX], special case n == 0, because 
ConstantRange(0, 0) creates an empty range rather than a full one.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100993 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-11 22:12:18 +00:00
Dan Gohman
e48172710b Fix a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100992 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-11 22:07:56 +00:00
Dan Gohman
e521ccb5bd Add a cast to void to show that the return value is being 
intentionally ignored.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100984 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-11 19:30:19 +00:00
Dan Gohman
87527c594f Delete a dead check. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100983 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-11 19:29:41 +00:00
Dan Gohman
86eeeaf877 Delete dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100981 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-11 19:28:47 +00:00
Dan Gohman
d908bbf727 Fix a #include. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100980 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-11 19:27:52 +00:00
Dan Gohman
3948d0b8b0 Rename isLoopGuardedByCond to isLoopEntryGuardedByCond, to emphasise 
that it's only testing for the entry condition, not full loop-invariant
conditions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100979 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-11 19:27:13 +00:00
Benjamin Kramer
b61e94fcf8 utostr isn't going away too soon, try to make it slightly smaller. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100977 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-11 19:00:03 +00:00
Nick Lewycky
16350f8d00 Remove dead argument and clean whitespace. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100954 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-10 23:18:13 +00:00
Chris Lattner
5106dcd078 Implement support for varargs functions without any fixed 
parameters in the CBE by implicitly adding a fixed argument.
This allows eliminating a work-around from DAE.  Patch by
Sylvere Teissier!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100944 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-10 19:12:44 +00:00
Daniel Dunbar
195d2dec10 configure: Fix default value for optimize_option, I messed up the test condition 
in r86005 and unintentionally changed the default from -O3 to -O2.

 - It's odd the things automated perf testing turns up! :)

 - Also, the configure diff is messed up slightly. It looks like someone either
   didn't regenerate configure correctly (or I didn't), or autoconf has some
   funnyness in it. Eric, any ideas?

This has been at -O2 for so long, that I am slightly nervous that this change
will uncover miscompiles of LLVM on other systems. If that is the case, I think
we should just set the default universally at -O3, and let developers/vendors
use -O3 if they want it and have tested it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100941 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-10 18:56:24 +00:00
Chris Lattner
6f285d2105 fix PR6743, a case where we'd delete an instruction before using it 
in some cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100937 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-10 18:26:57 +00:00
Chris Lattner
a2fb234b04 fix PR6760, a missing check in heap SRoA. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100936 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-10 18:19:22 +00:00
Chris Lattner
f7240de877 turn an assert into a proper check, fixing crash on invalid here: 
$ llvm-as t.ll
llvm-as: t.ll:1:6: error: expected 'type' after '='
%0 = = type { i32, float, float, double }
     ^

PR6810.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100934 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-10 18:01:25 +00:00
Chris Lattner
47e476609b improve haiku portability, patch by Paul Davey. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100933 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-10 17:54:51 +00:00
Chris Lattner
0941534c71 add attributes and module level asm to the ocaml bindings, 
patch by Patrick Walton!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100932 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-10 17:52:58 +00:00
Sean Callanan
35a3d3f8cd Updated the edis build mechanism to allow for builds 
that do not build some (or all) of the targets that
edis supports.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100910 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-10 00:48:10 +00:00
Dan Gohman
2c8a9f8ad9 Fix a typo and some indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100908 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 22:47:25 +00:00
Dan Gohman
e5f76877ae When determining a canonical insert position, don't climb deeper 
into adjacent loops. Also, ensure that the insert position is
dominated by the loop latch of any loop in the post-inc set which
has a latch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100906 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 22:07:05 +00:00
Bob Wilson
347fa3fa26 Tidy whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100904 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 21:38:26 +00:00
Johnny Chen
1808e4d251 If all the bit positions are not specified; do not decode the instructions. 
We are bound to fail!  For proper disassembly, the well-known encoding bits
of the instruction must be fully specified.

This also removes pseudo instructions from considerations of disassembly,
which is a better design and less fragile than the name matchings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100899 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 21:01:02 +00:00
Chris Lattner
e3a39d40db suck the propagating "has dynamic libs" check into a single makefile 
variable TARGET_HAS_DYNAMIC_LIBS


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100896 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 20:51:47 +00:00
Chris Lattner
21aa347c28 add minix support, patch by Kees van Reeuwijk! PR6797 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100895 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 20:45:04 +00:00
Chris Lattner
2ebad5ad41 clean this up, fix std::min ambiguity on some platforms. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100894 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 20:43:54 +00:00
Wesley Peck
16ddd885d8 Adding IPSCCP and Internalize passes to the C-bindings 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100893 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 20:43:20 +00:00
Bob Wilson
ec80e2693a Provide versions of the ARM eh_sjlj_setjmp instructions for non-VFP subtargets 
such that the non-VFP versions have no implicit defs of VFP registers.
If any callee-saved VFP registers are marked as having been defined, the
prologue/epilogue code will try to save and restore them.
Radar 7770432.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100892 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 20:41:18 +00:00
Ted Kremenek
76e94e541c Move 'Optional' class from Clang to LLVM/ADT. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100889 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 20:25:54 +00:00
Johnny Chen
e0c74fb1de ARM decoder emitter should print out useful information unconditionally when it 
encounters decoding conflicts, instead of wrapping it inside the DEBUG() macro. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100886 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 19:31:33 +00:00
Dan Gohman
f8d0578e4c When emitting code for an add, don't force a SCEVUnknown wrapper around 
a hoisted intermediate result if the intermediate result isn't an
Instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100884 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 19:14:31 +00:00
Dan Gohman
4a2a683366 When looking for loop-invariant users, look through no-op instructions, 
so that an unfortunately placed bitcast doesn't pin a value in a
register.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100883 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 19:12:34 +00:00
Benjamin Kramer
232c8b4d26 Make sure this test tests something. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100879 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 19:03:31 +00:00
Bob Wilson
0473868bfe Fix a grammaro. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100877 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 18:39:54 +00:00
Bob Wilson
f5c3f8cda5 Add a testcase for svn r100568. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100876 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 18:29:29 +00:00
Chris Lattner
dc8446330f "On SPU, variables in the .bss section that are allocated with the .lcomm directive are not aligned on 16 byte boundaries. This causes misaligned loads, as the generated assembly assumes this "default" alignment. 
this patch disables .lcomm in favour of '.local .comm'

Patch by Kalle Raisklia!




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100875 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 18:27:03 +00:00