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Author SHA1 Message Date
Owen Anderson
f8192cf0cc Attemt to provide correct encodings for Thumb2 binary operators. 
llvm-svn: 118939
 2010-11-12 23:18:11 +00:00
Evan Cheng
f3c75f91e9 Eliminate ARM::MOVi2pieces. Just use MOVi32imm and expand it to either movi+orr or movw+movt depending on the subtarget. 
llvm-svn: 118938
 2010-11-12 23:03:38 +00:00
Eric Christopher
b8ee838424 Make this happen for ARM like x86. Don't entirely bail out when 
an address is in a different block, get it into a register and go
from there.

llvm-svn: 118936
 2010-11-12 22:52:32 +00:00
Evan Cheng
19f018a1be Add conditional mvn instructions. 
llvm-svn: 118935
 2010-11-12 22:42:47 +00:00
Jim Grosbach
e0ba69b81d Zap a copy/paste-o bit of dead code. 
llvm-svn: 118926
 2010-11-12 21:29:10 +00:00
Jim Grosbach
eaaf8294a5 Refactor to parameterize some ARM load/store encoding patterns. Preparatory 
to splitting the load/store pre/post indexed instructions into [r, r] and
[r, imm] forms.

llvm-svn: 118925
 2010-11-12 21:28:15 +00:00
Owen Anderson
f1ffc8fdc9 First stab at providing correct Thumb2 encodings, start with adc. 
llvm-svn: 118924
 2010-11-12 21:12:40 +00:00
Duncan Sands
29593ddf27 Have GVN simplify instructions as it goes. For example, consider 
"%z = %x and %y".  If GVN can prove that %y equals %x, then it turns
this into "%z = %x and %x".  With the new code, %z will be replaced
with %x everywhere (and then deleted).  Previously %z would be value
numbered too, which is a waste of time.  Also, while a clever value
numbering algorithm would give %z the same value number as %x, our
current one doesn't do so (at least I don't think it does).  The new
logic has an essentially equivalent effect to what you would get if
%z was given the same value number as %x, i.e. it should make value
numbering smarter.  While there, get hold of target data once at the
start rather than a gazillion times all over the place.

llvm-svn: 118923
 2010-11-12 21:10:24 +00:00
Evan Cheng
b565d1acf9 Add some missing isel predicates on def : pat patterns to avoid generating VFP vmla / vmls (they cause stalls). Disabling them in isel is properly not a right solution, I'll look into a proper solution next. 
llvm-svn: 118922
 2010-11-12 20:32:20 +00:00
Jim Grosbach
160cc37f73 Kill more unused stuff. 
llvm-svn: 118921
 2010-11-12 19:27:45 +00:00
Benjamin Kramer
b4c0c4211e MCELF: Copy the symbol name only if we're going to modify it. 
llvm-svn: 118920
 2010-11-12 19:26:04 +00:00
Jim Grosbach
8bb507dd6b Remove unused class. 
llvm-svn: 118919
 2010-11-12 19:24:53 +00:00
Rafael Espindola
c2eb6da056 Add --enable-docs. Patch by NAKAMURA Takumi. 
llvm-svn: 118918
 2010-11-12 19:24:06 +00:00
Dan Gohman
8b86287a06 When the definition of an address value is in a different block 
from the user of the address, fall back to just using the
address in a register instead of bailing out of fast-isel
altogether.

llvm-svn: 118917
 2010-11-12 19:14:00 +00:00
Chris Lattner
2a70c4e38a accept lret as an alias for lretl, fixing the reopened part of PR8592 
llvm-svn: 118916
 2010-11-12 18:54:56 +00:00
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