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Author SHA1 Message Date
Rafael Espindola
77cad43f26 Remove what looks like dead code in the production of debug lines. 
We only produce debug line information if we have seen a line directive, so
this code is dead. Also, if we want to be bug by bug compatible with
gas and sometimes produce "empty" .debug_line sections, this will
match the content produced by gas.

llvm-svn: 118914
 2010-11-12 18:41:26 +00:00
Andrew Trick
68d533cca4 typo (4th checkin for one fix) 
llvm-svn: 118913
 2010-11-12 18:36:03 +00:00
Andrew Trick
a2f5bd63ff Emacs auto-fill bug. 
llvm-svn: 118908
 2010-11-12 18:17:46 +00:00
Jim Grosbach
f9d1b45754 Fill in the default predication bits for ARM unconditional branch. 
llvm-svn: 118907
 2010-11-12 18:13:26 +00:00
Andrew Trick
e5e40ec069 Test case for PR8287: SD scheduling time. Fixed in r118904. 
llvm-svn: 118906
 2010-11-12 17:57:22 +00:00
Jim Grosbach
cbab1ea04e Encoding for ARM LDRSB instructions. 
llvm-svn: 118905
 2010-11-12 17:52:59 +00:00
Andrew Trick
d0c919dcad Fixes PR8287: SD scheduling time. The fix is a failsafe that prevents 
catastrophic compilation time in the event of unreasonable LLVM
IR. Code quality is a separate issue--someone upstream needs to do a
better job of reducing to llvm.memcpy. If the situation can be reproduced with
any supported frontend, then it will be a separate bug.

llvm-svn: 118904
 2010-11-12 17:50:46 +00:00
Chris Lattner
612039e538 implement PR8592: empirically "lretq" is a "lret" with a rex.w prefix. 
llvm-svn: 118903
 2010-11-12 17:41:20 +00:00
Chris Lattner
bcdb696f6c tidy up. 
llvm-svn: 118896
 2010-11-12 17:24:29 +00:00
Rafael Espindola
dc54b2b285 gnu as support both % and @ before types, do the same. 
llvm-svn: 118893
 2010-11-12 15:47:08 +00:00
Dan Gohman
ec55b3ac75 Re-disable TBAA for now; it broke MultiSource/Applications/JM/lencod, 
at least.

llvm-svn: 118890
 2010-11-12 11:21:08 +00:00
Kalle Raiskila
f89d0d0389 Fix memory access lowering on SPU, adding 
support for the case where alignment<value size.

These cases were silently miscompiled before this patch.
Now they are overly verbose -especially storing is- and
any front-end should still avoid misaligned memory 
accesses as much as possible. The bit juggling algorithm
added here probably has some room for improvement still.

llvm-svn: 118889
 2010-11-12 10:14:03 +00:00
Eric Christopher
1ca7518097 Fix up a few more spots of addrmode2 (or not) changes that were 
missed. Update some comments accordingly.

Fixes rdar://8652289

llvm-svn: 118888
 2010-11-12 09:48:30 +00:00
Dan Gohman
f867bfd906 Enable TBAA. 
llvm-svn: 118884
 2010-11-12 06:20:01 +00:00
Lang Hames
b10e4b99e3 Fix some style issues in PBQP. Patch by David Blaikie. 
llvm-svn: 118883
 2010-11-12 05:47:21 +00:00
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
Dan Gohman
2cf0e523cb Filecheckize. 
llvm-svn: 118874
 2010-11-12 02:02:39 +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
Chris Lattner
6f46d6f99f describe the preferred approach to silencing 'unused variable warnings' due to asserts. 
llvm-svn: 118863
 2010-11-12 00:19:41 +00:00
Chris Lattner
ce47bb4409 add operand iterator apis to MachineInstr, patch by ether zhhb. 
llvm-svn: 118862
 2010-11-12 00:00:21 +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
Owen Anderson
7fda1a6efd Flesh out tests for Thumb2 encodings of NEON instructions. 
llvm-svn: 118837
 2010-11-11 21:15:47 +00:00
Dan Gohman
139b090e0e Delete unneeded ssp attributes. 
llvm-svn: 118836
 2010-11-11 21:08:46 +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
Dan Gohman
7c06994452 Add comments. 
llvm-svn: 118799
 2010-11-11 17:33:39 +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