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43163 Commits

Author SHA1 Message Date
Dan Gohman
bc5a716f10 Enhance DSE to handle the case where a free call makes more than 
one store dead. This is especially noticeable in
SingleSource/Benchmarks/Shootout/objinst.

llvm-svn: 118875
 2010-11-12 02:19:17 +00:00
Dale Johannesen
659061fcd3 Remove possibly useful info from comment, per Chris. 
llvm-svn: 118865
 2010-11-12 00:43:18 +00:00
Bruno Cardoso Lopes
37f2439cbd Enable mips32 mul instruction. Patch by Akira Hatanaka <ahatanaka@mips.com> 
llvm-svn: 118864
 2010-11-12 00:38:32 +00:00
Jim Grosbach
f00a6faa17 Start of support for binary emit of 16-it Thumb instructions. 
llvm-svn: 118859
 2010-11-11 23:41:09 +00:00
Owen Anderson
85cf1b8ff5 Fill out support for Thumb2 encodings of NEON instructions. 
llvm-svn: 118854
 2010-11-11 23:12:55 +00:00
Wesley Peck
7974f4c201 The BRK instruction in the MicroBlaze is a branch-and-link. 
llvm-svn: 118848
 2010-11-11 22:21:08 +00:00
Nick Lewycky
1acee08e53 Doxygenify 
llvm-svn: 118846
 2010-11-11 21:51:44 +00:00
Dan Gohman
f3bf6591e0 Add helper functions for computing the Location of load, store, 
and vaarg instructions.

llvm-svn: 118845
 2010-11-11 21:50:19 +00:00
Wesley Peck
0e937ae80d Fix tblgen instruction errors exposed by MC asm parser tests 
Fix minimum 16-bit signed value error exposed by MC asm parser tests
Add initial MC asm parser tests for the MBlaze backend

llvm-svn: 118844
 2010-11-11 21:40:53 +00:00
Owen Anderson
0913dac245 Add correct Thumb2 encodings for NEON vst[1,2,3,4] and vld[1,2,3,4]. 
llvm-svn: 118843
 2010-11-11 21:36:43 +00:00
Dan Gohman
97ce60bfa4 Don't forget the TBAA info, if available. 
llvm-svn: 118842
 2010-11-11 21:27:26 +00:00
Dan Gohman
b20b7d2ec2 Factor out Instruction::isSafeToSpeculativelyExecute's code for 
testing for dereferenceable pointers into a helper function,
isDereferenceablePointer.  Teach it how to reason about GEPs
with simple non-zero indices.

Also eliminate ArgumentPromtion's IsAlwaysValidPointer,
which didn't check for weak externals or out of range gep
indices.

llvm-svn: 118840
 2010-11-11 21:23:25 +00:00
Eric Christopher
474a93ff76 Revert the accidental commit I made reverting the previous commit. 
llvm-svn: 118835
 2010-11-11 20:50:14 +00:00
Jim Grosbach
b48a272807 Trailing whitespace. 
llvm-svn: 118831
 2010-11-11 20:16:23 +00:00
Jim Grosbach
cc8e5dc0c6 ARM fixup encoding for direct call instructions (BL). 
llvm-svn: 118829
 2010-11-11 20:05:40 +00:00
Eric Christopher
e7f27cf66a Revert this temporarily. 
llvm-svn: 118827
 2010-11-11 19:47:02 +00:00
Eric Christopher
beb7a50acb Change the prologue and epilogue to use push/pop for the low ARM registers. 
llvm-svn: 118823
 2010-11-11 19:26:03 +00:00
Dan Gohman
b68f197748 Avoid calling alias on non-pointer values. 
llvm-svn: 118822
 2010-11-11 19:23:51 +00:00
Owen Anderson
f43f09f6f6 Add support for Thumb2 encodings of NEON data processing instructions, using the new PostEncoderMethod infrastructure. 
More tests to come.

llvm-svn: 118819
 2010-11-11 19:07:48 +00:00
Rafael Espindola
1725702868 Mark labels declared in tls sections as STT_TLS. This matches the behavior of 
gas.

llvm-svn: 118818
 2010-11-11 19:04:55 +00:00
Wesley Peck
9ad36509f8 Fixed some bugs in MBlaze asm parser that were introduced when removing OwningPtrs from the code. 
llvm-svn: 118807
 2010-11-11 18:41:33 +00:00
Chris Lattner
b3eff154cd add a note 
llvm-svn: 118806
 2010-11-11 18:23:57 +00:00
Rafael Espindola
8555d32c9e Initial comdat implementation. 
llvm-svn: 118805
 2010-11-11 18:13:52 +00:00
Dan Gohman
7c6a63aea3 TBAA-enable ArgumentPromotion. 
llvm-svn: 118804
 2010-11-11 18:09:32 +00:00
Dan Gohman
d88f1d63ac Add a FIXME comment. 
llvm-svn: 118803
 2010-11-11 18:08:43 +00:00
Jim Grosbach
abf0e10ea0 Encoding of destination fixup for ARM branch and conditional branch 
instructions.

llvm-svn: 118801
 2010-11-11 18:04:49 +00:00
Andrew Trick
5e77065d78 Check TRI->getReservedRegs because other allocators do it. Even though 
it makes no sense for allocation_order iterators to visit reserved regs.
The inline spiller depends on AliasAnalysis.
Manage the Query state to avoid uninitialized or stale results.

llvm-svn: 118800
 2010-11-11 17:46:29 +00:00
Rafael Espindola
f7b3bb84e8 Make AliasedSymbol able to handle MCTargetExpr. They can get here if 
a weakref is used with a VariantKind.

llvm-svn: 118798
 2010-11-11 17:24:43 +00:00
Chris Lattner
3514fa6b11 add pr# 
llvm-svn: 118797
 2010-11-11 17:17:56 +00:00
Jim Grosbach
cfc32e3b5a Encoding for ARM LDRSH_POST. 
llvm-svn: 118794
 2010-11-11 16:55:29 +00:00
Rafael Espindola
f1ee36c3a3 Fix the symbol index of weak references. Also make RecordRelocation a bit 
easier to read by having const references to the symbol, aliased symbol and
renamed symbol.

llvm-svn: 118793
 2010-11-11 16:48:11 +00:00
Dan Gohman
9f805118c3 Include ImmutablePass passes in -debug-pass=Arguments. 
llvm-svn: 118790
 2010-11-11 16:32:17 +00:00
Dan Gohman
8e986f9c2f Remove the memmove->memcpy optimization from CodeGen. MemCpyOpt does this. 
llvm-svn: 118789
 2010-11-11 16:24:49 +00:00
Dan Gohman
01ed16d764 Make Sink tbaa-aware. 
llvm-svn: 118788
 2010-11-11 16:21:47 +00:00
Dan Gohman
4a432aa7bc It's safe to sink some instructions which are not safe to speculatively 
execute. Make Sink's predicate more precise.

llvm-svn: 118787
 2010-11-11 16:20:28 +00:00
Rafael Espindola
5766346831 Remove some explicit arguments to getELFSection. This is 
a leftover from the removal of isExplicit.

llvm-svn: 118774
 2010-11-11 03:40:25 +00:00
Jim Grosbach
8cb10f8def Encoding for ARM LDRSH and LDRSH_PRE. Cannonicalize operand names. 
llvm-svn: 118767
 2010-11-11 01:55:59 +00:00
Jim Grosbach
b86e183a33 Fix encoding of Ra register for ARM smla* instructions. 
llvm-svn: 118761
 2010-11-11 01:27:41 +00:00
Jim Grosbach
3b13f9013c ARM STRH encoding information. 
llvm-svn: 118757
 2010-11-11 01:09:40 +00:00
Jakob Stoklund Olesen
e7e1f14d50 Delete SplittingSpiller. It was not being used by anyone, and it is being 
superceded by SplitKit.

llvm-svn: 118754
 2010-11-11 00:52:44 +00:00
Dan Gohman
50936c7c4b It's not necessary to clear out the Size and TBAATag at each of 
these points.

llvm-svn: 118752
 2010-11-11 00:42:22 +00:00
Dan Gohman
b476dc0f55 Set NonLocalDepInfo's Size field to UnknownSize when invalidating 
it, so that it doesn't appear to be a known size.

llvm-svn: 118748
 2010-11-11 00:20:27 +00:00
Jakob Stoklund Olesen
313b78d28e Insert two blank SlotIndexes between basic blocks instead of just one. 
This is the first small step towards using closed intervals for liveness instead
of the half-open intervals we're using now.

We want to be able to distinguish between a SlotIndex that represents a variable
being live-out of a basic block, and an index representing a variable live-in to
its successor.

That requires two separate indexes between blocks. One for live-outs and one for
live-ins.

With this change, getMBBEndIdx(MBB).getPrevSlot() becomes stable so it stays
greater than any instructions inserted at the end of MBB.

llvm-svn: 118747
 2010-11-11 00:19:20 +00:00
Jakob Stoklund Olesen
2f72fda7ef No need to add liveness that's already there. 
llvm-svn: 118742
 2010-11-10 23:56:00 +00:00
Jakob Stoklund Olesen
6a63cbe06d Hook up AliasAnalysis in InlineSpiller. This is used for rematerializing 
constant loads.

llvm-svn: 118741
 2010-11-10 23:55:56 +00:00
Jim Grosbach
2c1d6373ab Move LDM predicate operand encoding into base clase. Add STM missing STM 
encoding bits.

llvm-svn: 118738
 2010-11-10 23:44:32 +00:00
Jim Grosbach
ad037e5ded ARM LDM encoding for the mode (ia, ib, da, db) operand. 
llvm-svn: 118736
 2010-11-10 23:38:36 +00:00
Rafael Espindola
6ee5a9491d Factor some code into WriteSection. 
llvm-svn: 118733
 2010-11-10 23:36:59 +00:00
Jim Grosbach
ef95eee920 Fix ARM encoding of non-return LDM instructions. 
llvm-svn: 118732
 2010-11-10 23:18:49 +00:00
Jim Grosbach
d832c84199 Fix ARM encoding of LDM+Return instruction. 
llvm-svn: 118730
 2010-11-10 23:12:48 +00:00
Dan Gohman
8895f1c5d5 When clearing a non-local pointer dependency cache entry, clear 
the reverse map too. This fixes seflhost build errors.

llvm-svn: 118729
 2010-11-10 22:35:02 +00:00
Rafael Espindola
281431a034 Update the section index map after we add the medatada sections. 
llvm-svn: 118728
 2010-11-10 22:34:07 +00:00
Devang Patel
5520a6fc97 Take care of special characters while creating named MDNode name to hold function specific local variable's info. 
This fixes radar 8653152. I am checking in testcase as a separate check-in.

llvm-svn: 118726
 2010-11-10 22:19:21 +00:00
Rafael Espindola
576f8dd869 Use SectionIndexMap in WriteSymbolTable to make it a little less brittle. 
llvm-svn: 118725
 2010-11-10 22:16:43 +00:00
Dan Gohman
543edf7e84 Factor out the code for computing an AliasAnalysis::Location 
for a given instruction into a helper function.

llvm-svn: 118723
 2010-11-10 21:51:35 +00:00
Rafael Espindola
d3696f41c7 Factor some code into ComputeIndexMap. 
llvm-svn: 118722
 2010-11-10 21:51:05 +00:00
Dan Gohman
aef3e95364 Fully invalidate cached results when a prior query's size or 
type is insufficient for, or incompatible with, the current query.

llvm-svn: 118721
 2010-11-10 21:45:11 +00:00
Nate Begeman
c4fabeabb9 Fix an issue where we tried to turn a v2f32 build_vector into a v4i32 build vector with 2 elts 
llvm-svn: 118720
 2010-11-10 21:35:41 +00:00
Duncan Sands
815e967d98 Reduce the maximum recursion depth, 5 seems pointlessly too much. 
Probably it should just be 1, but compromise with 3.

llvm-svn: 118718
 2010-11-10 20:53:24 +00:00
Dan Gohman
2b4e8302a6 Enhance GVN to do more precise alias queries for non-local memory 
references. For example, this allows gvn to eliminate the load in
this example:

  void foo(int n, int* p, int *q) {
    p[0] = 0;
    p[1] = 1;
    if (n) {
      *q = p[0];
    }
  }

llvm-svn: 118714
 2010-11-10 20:37:15 +00:00
Rafael Espindola
859cfe5bbd Change the String<size> methods to take a fragment instead of a buffer. 
llvm-svn: 118709
 2010-11-10 20:02:59 +00:00
Jakob Stoklund Olesen
00c4d94862 Basic rematerialization during splitting. 
Whenever splitting wants to insert a copy, it checks if the value can be
rematerialized cheaply instead.

Missing features:
- Delete instructions when all uses have been rematerialized.
- Truncate live ranges to the remaining uses after rematerialization.

llvm-svn: 118702
 2010-11-10 19:31:50 +00:00
Andrew Trick
9d60f59b55 RABasic is nearly functionally complete. There are a few remaining 
benchmarks hitting an assertion.
Adds LiveIntervalUnion::collectInterferingVRegs.
Fixes "late spilling" by checking for any unspillable live vregs among
all physReg aliases.

llvm-svn: 118701
 2010-11-10 19:18:47 +00:00
Rafael Espindola
d05bf9ffe0 Use MCSectionELF in places we know we have an ELF section. 
llvm-svn: 118699
 2010-11-10 19:05:07 +00:00
Dan Gohman
efbd98c352 Use getValueOperand() and getPointerOperand() on load and store 
instructions instead of hard-coding operand numbers.

llvm-svn: 118698
 2010-11-10 19:03:33 +00:00
Duncan Sands
8531f14f5b Teach InstructionSimplify how to look through PHI nodes. Since PHI 
nodes can be used in loops, this could result in infinite looping
if there is no recursion limit, so add such a limit.  It is also
used for the SelectInst case because in theory there could be an
infinite loop there too if the basic block is unreachable.

llvm-svn: 118694
 2010-11-10 18:23:01 +00:00
Dan Gohman
65a3841f03 Add a doesAccessArgPointees helper function, and update code to use 
it, and to be consistent.

llvm-svn: 118692
 2010-11-10 18:17:28 +00:00
Jim Grosbach
c5001c0f1d Simplify and clean up MC symbol lookup for ARM constant pool values. This fixes 
double quoting of ObjC symbol names in constant pool entries.

rdar://8652107

llvm-svn: 118688
 2010-11-10 17:59:10 +00:00
Dan Gohman
9ae50022a1 Factor out the code for testing whether a function accesses 
arbitrary memory into a helper function, and adjust some comments.

llvm-svn: 118687
 2010-11-10 17:34:04 +00:00
Michael J. Spencer
db71d89716 Fix Whitespace. 
llvm-svn: 118683
 2010-11-10 15:06:00 +00:00
Michael J. Spencer
c3e664a431 System/Win32/Path: Implement isSymLink. 
llvm-svn: 118681
 2010-11-10 15:05:39 +00:00
Duncan Sands
1ecf1f999e Simplify binary operations where one operand is a select instruction. 
The simplifications performed here never create new instructions, they
only return existing instructions (or a constant), and so are always a
win.  In theory they should transform (for example)
  %z = and i32 %x, %y
  %s = select i1 %cond, i32 %y, i32 %z
  %r = and i32 %x, %s
into
  %r = and i32 %x, y
but in practice they get into a fight with instcombine, and lose.
Unfortunately instcombine does a poor job in this case.  Nonetheless
I'm committing this transform to make it easier to discuss what to
do to make peace with instcombine.

llvm-svn: 118679
 2010-11-10 13:00:08 +00:00
NAKAMURA Takumi
84f55bb902 Win32/Process.inc: [PR8527] Process::FileDescriptorIsDisplayed(fd) should not check by FILE_TYPE_CHAR. It must be better to check it with Console API. 
The special file "NUL" is FILE_TYPE_CHAR with GetFileType(h). It was treated as display device and discarding output to NUL had failed. (eg. opt -o nul)

llvm-svn: 118678
 2010-11-10 08:37:47 +00:00
Jim Grosbach
4e3653e4e1 Update ARMConstantPoolValue to not use a modifier string. Use an explicit 
VariantKind marker to indicate the additional information necessary. Update
MC to handle the new Kinds. rdar://8647623

llvm-svn: 118671
 2010-11-10 03:26:07 +00:00
Bruno Cardoso Lopes
2266e58196 Add clo instruction. Patch by Akira Hatanaka (ahatanaka@mips.com) with some minor tweaks 
llvm-svn: 118667
 2010-11-10 02:13:22 +00:00
Dale Johannesen
24a82bdec2 When checking that the necessary bits are zero in 
order to reduce ((x<<30)>>24) to x<<6, check the
correct bits.  PR 8547.

llvm-svn: 118665
 2010-11-10 01:30:56 +00:00
Bill Wendling
87c781b411 Emit a '!' if this is a "writeback" register or memory address. 
llvm-svn: 118662
 2010-11-10 01:07:54 +00:00
Jakob Stoklund Olesen
e259b04730 Simplify the LiveRangeEdit::canRematerializeAt() interface a bit. 
llvm-svn: 118661
 2010-11-10 01:05:12 +00:00
Dan Gohman
1571dfc883 Make ModRefBehavior a lattice. Use this to clean up AliasAnalysis 
chaining and simplify FunctionAttrs' GetModRefBehavior logic.

llvm-svn: 118660
 2010-11-10 01:02:18 +00:00
Matt Beaumont-Gay
993d07638e Rename a parameter to avoid confusion with a local variable 
llvm-svn: 118656
 2010-11-10 00:08:58 +00:00
Bill Wendling
0c082b811f Emit the warning about the register list not being in ascending order only once. 
llvm-svn: 118653
 2010-11-09 23:45:59 +00:00
Rafael Espindola
3c0f11a265 Fixed version of 118639 with an extra assert to catch similar problems 
earlier. Implicit bool -> int conversions are evil!

llvm-svn: 118651
 2010-11-09 23:42:07 +00:00
Bill Wendling
8cfb0a507e s/std::vector/SmallVector/ 
llvm-svn: 118648
 2010-11-09 23:28:44 +00:00
Rafael Espindola
a16ec0145e Revert previous patch. Missed a case. 
llvm-svn: 118645
 2010-11-09 22:54:38 +00:00
Bill Wendling
01897eaa4e Delete the allocated vector. 
llvm-svn: 118644
 2010-11-09 22:51:42 +00:00
Bob Wilson
03a878a419 Define the subtarget feature for the architecture version, 
as derived from the target triple.  This is important for enabling
features that are implied based on the architecture version.

llvm-svn: 118643
 2010-11-09 22:50:47 +00:00
Bob Wilson
a933ce4caa Do not use MEMBARRIER_MCR for any Thumb code. 
It is only supported for ARM code.  Normally Thumb2 code would use DMB instead,
but depending on how the compiler is invoked (e.g., -mattr=-db) that might be
disabled.  This prevents a "cannot select MEMBARRIER_MCR" error in that
situation.  Radar 8644195

llvm-svn: 118642
 2010-11-09 22:50:44 +00:00
Bill Wendling
63cfae801d Two types of instructions have register lists: 
* LDM, et al, uses a bit mask to indicate the register list.
* VLDM, et al, uses a base register plus number.

The LDM instructions may be non-contiguous, but the VLDM ones must be
contiguous. Those are semantic checks that should be done later in the
compiler. Also postpone the creation of the bit mask until it's needed.

llvm-svn: 118640
 2010-11-09 22:44:22 +00:00
Rafael Espindola
5e39a6d951 Remove IsExplicit. It was always false. 
llvm-svn: 118639
 2010-11-09 22:37:44 +00:00
Jim Grosbach
be0d795478 Change the ARMConstantPoolValue modifier string to an enumeration. This will 
help in MC'izing the references that use them.

llvm-svn: 118633
 2010-11-09 21:36:17 +00:00
Andrew Trick
374490bf92 Adds RABasic verification and tracing. 
(retry now that the windows build is green)

llvm-svn: 118630
 2010-11-09 21:04:34 +00:00
Dan Gohman
a42f6c32a3 Teach FunctionAttrs about the VAArg instruction. 
llvm-svn: 118627
 2010-11-09 20:17:38 +00:00
Dan Gohman
4651780f86 Use the AliasAnalysis interface to determine how a Function accesses 
memory. This isn't a real improvement with present day AliasAnalysis
implementations; it's mainly for consistency.

llvm-svn: 118624
 2010-11-09 20:13:27 +00:00
Dan Gohman
ebeb34d412 VAArg doesn't capture its operand. 
llvm-svn: 118623
 2010-11-09 20:09:35 +00:00
Dan Gohman
f82eabd648 Teach AliasAnalysis about AccessesArgumentsReadonly. 
llvm-svn: 118621
 2010-11-09 20:06:55 +00:00
Dan Gohman
1308376ebf Teach LICM and AliasSetTracker about AccessesArgumentsReadonly. 
llvm-svn: 118618
 2010-11-09 19:58:21 +00:00
Dan Gohman
4cba066d9f Teach FunctionAttrs about AccessesArgumentsReadonly. 
llvm-svn: 118617
 2010-11-09 19:56:27 +00:00
Matt Beaumont-Gay
0f262ff853 Add a trivial virtual dtor to AbstractRegisterDescription to appease 
-Wnon-virtual-dtor.

llvm-svn: 118616
 2010-11-09 19:56:25 +00:00
Andrew Trick
6b9d6df8c3 Reverting r118604. Windows build broke. 
llvm-svn: 118613
 2010-11-09 19:47:51 +00:00
Jim Grosbach
d98cc456d2 Handle ARM constant pool values that need an explicit reference to the '.' 
pseudo-label. (TLS stuff).

llvm-svn: 118609
 2010-11-09 19:40:22 +00:00
Chris Lattner
d7d7d5717b add a case we fail to devirt. 
llvm-svn: 118608
 2010-11-09 19:37:28 +00:00
Jim Grosbach
ce5c2dbeae Trailing whitespace. 
llvm-svn: 118606
 2010-11-09 19:22:26 +00:00
Andrew Trick
ce7b5df15e Adds RABasic verification and tracing. 
llvm-svn: 118604
 2010-11-09 19:01:17 +00:00
Jim Grosbach
2c60dfb555 Further MCize ARM constant pool values. This allows basic PIC references for 
object file emission.

llvm-svn: 118601
 2010-11-09 18:45:04 +00:00
Jim Grosbach
abe68922ca Add encoding of Rt to ARM LDR/STR w/ reg+reg offset encoding. 
llvm-svn: 118600
 2010-11-09 18:43:54 +00:00
Owen Anderson
a08bcc13b3 Last try to get this reference counting right, I swear. 
llvm-svn: 118589
 2010-11-09 17:47:10 +00:00
Owen Anderson
1fd660701c Really fix the leak in the attributes list. Thanks to Benjamin Kramer for pointing out how I was being stupid. 
llvm-svn: 118588
 2010-11-09 17:46:38 +00:00
Jim Grosbach
08310de036 For ARM load/store instructions, encode [reg+reg] with no shifter immediate as 
a left shift by zero.

llvm-svn: 118587
 2010-11-09 17:38:15 +00:00
Jim Grosbach
0a8517fd62 ARM .word data fixups don't need an adjustment. 
llvm-svn: 118586
 2010-11-09 17:36:59 +00:00
Duncan Sands
f68789ed87 Factorize code, no functionality change. 
llvm-svn: 118516
 2010-11-09 17:25:51 +00:00
Bruno Cardoso Lopes
81f7b26109 Fix trailing whitespace and style, no functionality change 
llvm-svn: 118515
 2010-11-09 17:25:34 +00:00
Jim Grosbach
f64560f315 Add encoder method for ARM load/store shifted register offset operands. 
llvm-svn: 118513
 2010-11-09 17:20:53 +00:00
Michael J. Spencer
aa24a317fe System/Path/Windows: Implement GetLLVMDefaultConfigDir. 
llvm-svn: 118507
 2010-11-09 15:11:42 +00:00
Michael J. Spencer
ad6bc07ddf System/Path/Windows: Generalize GetUserHomeDirectory. 
llvm-svn: 118506
 2010-11-09 15:11:31 +00:00
Michael J. Spencer
f8dfe421d1 System/Path/Windows: Make GetSystemLibraryPaths more generic. 
llvm-svn: 118505
 2010-11-09 15:11:19 +00:00
Michael J. Spencer
c1f741635e System/Windows: Reduce dependencies. 
llvm-svn: 118504
 2010-11-09 15:11:07 +00:00
Michael J. Spencer
55503cd933 System/Windows: Use normalized case and include method. 
llvm-svn: 118503
 2010-11-09 15:10:56 +00:00
Michael J. Spencer
3ae9fd29ae System/Path/Windows: Change GetRootDirectory to return file:/// instead of C:/. 
llvm-svn: 118502
 2010-11-09 15:10:45 +00:00
Michael J. Spencer
9d3766f99b Update comment. 
llvm-svn: 118501
 2010-11-09 15:10:29 +00:00
Owen Anderson
7aecff35de Fix leak in my recent fix for PR8442. 
llvm-svn: 118490
 2010-11-09 05:17:47 +00:00
Dan Gohman
903935bf3e Fix DAGCombiner to avoid folding a sext-in-reg or similar through a shl 
in order to fold it into a load.

llvm-svn: 118471
 2010-11-09 01:54:35 +00:00
Jim Grosbach
0b06d57ccd Add support for a few simple fixups to the ARM Darwin asm backend. This allows 
constant pool references and global variable refernces to resolve properly
for object file generation. For example,

int x;
void foo(unsigned a, unsigned *p) {
  p[a] = x;
}

can now be successfully compiled directly to an (ARM mode) object file.

llvm-svn: 118469
 2010-11-09 01:37:15 +00:00
Dale Johannesen
88f85df7f7 Fix an inline asm pasto from 117667; was preventing 
{i64, i64} from matching i128.

llvm-svn: 118465
 2010-11-09 01:15:07 +00:00
Owen Anderson
77676a8f1d Fix PR8441, a thread unsafe static variable in our dynamic library loading facilities. 
llvm-svn: 118463
 2010-11-09 00:36:06 +00:00
Bill Wendling
41fb74d268 Revert r118457 and r118458. These won't hold for GPRs. 
llvm-svn: 118462
 2010-11-09 00:30:18 +00:00
Owen Anderson
a5c69eec12 Fix PR8441, a race condition in the static attributes list. While the reference counting was itself threadsafe, 
the implicit removal of each object from the global list was not.  Make this operation atomic.

llvm-svn: 118461
 2010-11-09 00:27:03 +00:00
Bill Wendling
f080f8ddfe Get the register and count from the register list operands. 
llvm-svn: 118458
 2010-11-08 23:51:20 +00:00
Bill Wendling
ab76e02a12 reglist has two operands. 
llvm-svn: 118457
 2010-11-08 23:50:20 +00:00
Bill Wendling
2ff2ee2765 The "addRegListOperands()" function returns the start register and the total 
number of registers in the list.

llvm-svn: 118456
 2010-11-08 23:49:57 +00:00
Owen Anderson
52e3873edc Add support for ARM's specialized vector-compare-against-zero instructions. 
llvm-svn: 118453
 2010-11-08 23:21:22 +00:00
Bruno Cardoso Lopes
64dd957550 Initial support for Mips32 and Mips32r2. Patch contributed by Akira Hatanaka (ahatanaka@mips.com) 
llvm-svn: 118447
 2010-11-08 21:42:32 +00:00
Bill Wendling
3e6eee5c35 Add "write back" bit encoding. 
llvm-svn: 118446
 2010-11-08 21:28:03 +00:00
Bruno Cardoso Lopes
9f9f796756 Fix PR8211 
llvm-svn: 118445
 2010-11-08 21:24:59 +00:00
Michael J. Spencer
13728c298a Remove contributor names as per coding statndard. 
llvm-svn: 118442
 2010-11-08 20:56:32 +00:00
Dan Gohman
9f78edd2a7 Re-introduce the MaxLookup limit to BasicAliasAnalysis' 
pointsToConstantMemory code to guard against possible
compile time slowdowns.

llvm-svn: 118440
 2010-11-08 20:26:19 +00:00
Wesley Peck
f3909b741f Adding working version of assembly parser for the MBlaze backend 
Major cleanup of whitespace and formatting issues in MBlaze backend

llvm-svn: 118434
 2010-11-08 19:40:01 +00:00
Dan Gohman
9ab4ef5e65 Fix a thinko that Duncan spotted. 
llvm-svn: 118430
 2010-11-08 19:24:47 +00:00
Dale Johannesen
f16acd1325 Revert 118422 in search of bot verdancy. 
llvm-svn: 118429
 2010-11-08 19:17:22 +00:00
Andrew Trick
45ec210e3c Adds support for spilling previously allocated live intervals to 
handle cases in which a register is unavailable for spill code.
Adds LiveIntervalUnion::extract. While processing interferences on a
live virtual register, reuses the same Query object for each
physcial reg.

llvm-svn: 118423
 2010-11-08 18:02:08 +00:00
Jason W Kim
a253ed4e26 Support -mcpu=cortex-a8 in ARM attributes - Has Fixme. 1 Test modified. 
llvm-svn: 118422
 2010-11-08 17:58:07 +00:00
Daniel Dunbar
a8fb354cdf Fix typo. 
llvm-svn: 118421
 2010-11-08 17:53:02 +00:00
Dan Gohman
c04ed6e5da Make FunctionAttrs TBAA-aware. 
llvm-svn: 118417
 2010-11-08 17:12:04 +00:00
Dan Gohman
46cb7cd7d8 Implement getModRefBehavior for TypeBasedAliasAnalysis. 
llvm-svn: 118416
 2010-11-08 17:10:22 +00:00
Jason W Kim
c43f11132e Complete listing of ARM/MC/ELF relocation enums 
llvm-svn: 118413
 2010-11-08 16:47:27 +00:00
Dan Gohman
6909ecf66e Extend the AliasAnalysis::pointsToConstantMemory interface to allow it 
to optionally look for constant or local (alloca) memory.

Teach BasicAliasAnalysis::pointsToConstantMemory to look through Select
and Phi nodes, and to support looking for local memory.

Remove FunctionAttrs' PointsToLocalOrConstantMemory function, now that
AliasAnalysis knows all the tricks that it knew.

llvm-svn: 118412
 2010-11-08 16:45:26 +00:00
Dan Gohman
ee58dba24c Delete getIntrinsicModRefBehavior. Clients can just use the normal 
getModRefBehavior now, since it now understands intrinsics as well
as normal functions.

llvm-svn: 118411
 2010-11-08 16:11:19 +00:00
Dan Gohman
4e65d5ff92 Make FunctionAttrs use AliasAnalysis::getModRefBehavior, now that it 
knows about intrinsic functions.

llvm-svn: 118410
 2010-11-08 16:10:15 +00:00
Dan Gohman
a8838ec654 Teach BasicAliasAnalysis::getModRefBehavior(const Function *F) 
to analyze intrinsic functions.

llvm-svn: 118409
 2010-11-08 16:08:43 +00:00
Che-Liang Chiou
6ba699c749 Add generating function declaration for PTX 
llvm-svn: 118398
 2010-11-08 03:06:08 +00:00
Che-Liang Chiou
e207994d1b Add physical register counting functions 
llvm-svn: 118397
 2010-11-08 03:00:52 +00:00