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Author SHA1 Message Date
Dan Gohman
e2da5181db Refactor rewriting for PHI nodes into a separate function. 
llvm-svn: 96382
 2010-02-16 20:25:07 +00:00
Jim Grosbach
872d6b21aa First step in eliminating the CarryDefIsUnused and CarryDefIsUsed predicates. 
They won't work with the new ISel mechanism, as Requires predicates are no
longer allowed to reference the node being selected. Moving the predicate to
the patterns instead solves the problem.

This patch handles ARM mode. Thumb2 will follow.

llvm-svn: 96381
 2010-02-16 20:17:57 +00:00
Johnny Chen
900ebc03c5 Added for disassembly the following instructions: 
o Store Return State (SRSW, SRS)
o Load/Store Coprocessor (LDC/STC and friends)
o MSR (immediate)

llvm-svn: 96380
 2010-02-16 20:04:27 +00:00
Bob Wilson
a866c660db Split critical edges as needed for load PRE. 
llvm-svn: 96378
 2010-02-16 19:51:59 +00:00
Bob Wilson
1115365fcf Refactor to share code to find the position of a basic block successor in the 
terminator's list of successors.

llvm-svn: 96377
 2010-02-16 19:49:17 +00:00
Dan Gohman
815d966a5a Fix whitespace. 
llvm-svn: 96372
 2010-02-16 19:42:34 +00:00
Kenneth Uildriks
13195c9525 Function attributes have index ~0, not 0 
llvm-svn: 96370
 2010-02-16 19:28:02 +00:00
Chris Lattner
cafd2c75a1 simplify this code. In the new world order there is no 
need to scan the entire subtree of the pattern anymore.

llvm-svn: 96369
 2010-02-16 19:19:58 +00:00
Chris Lattner
ebcd505b14 convert the new matcher to check intermediate nodes for a single 
use and only call IsProfitableToFold/IsLegalToFold on the load
being folded, like the old dagiselemitter does.  This 
substantially simplifies the code and improves opportunities for
sharing.

llvm-svn: 96368
 2010-02-16 19:15:55 +00:00
Chris Lattner
eba9f75b00 change dag isel emitter to only call 'IsProfitableToFold' on nodes 
with chains.  On interior nodes that lead up to them, we just directly
check that there is a single use.  This generates slightly more
efficient code.

llvm-svn: 96366
 2010-02-16 19:03:34 +00:00
Bob Wilson
94eef3fc13 Fix pr6111: Avoid using the LR register for the target address of an indirect 
branch in ARM v4 code, since it gets clobbered by the return address before
it is used.  Instead of adding a new register class containing all the GPRs
except LR, just use the existing tGPR class.

llvm-svn: 96360
 2010-02-16 17:24:15 +00:00
Duncan Sands
e9a13a3c60 Introduce isOpaqueTy and use it rather than isa<OpaqueType>. Also, move some 
methods to try to have the type predicates be more logically positioned.

llvm-svn: 96349
 2010-02-16 14:50:09 +00:00
Duncan Sands
1b33dd3c83 There are two ways of checking for a given type, for example isa<PointerType>(T) 
and T->isPointerTy().  Convert most instances of the first form to the second form.
Requested by Chris.

llvm-svn: 96344
 2010-02-16 11:11:14 +00:00
Benjamin Kramer
32ff92be51 Minor warning fixes (semicolons, newline at EOF). 
llvm-svn: 96343
 2010-02-16 10:25:04 +00:00
Chris Lattner
2507e6b51f mark all the generated node predicates 'const'. 
llvm-svn: 96337
 2010-02-16 07:26:36 +00:00
Chris Lattner
a9550b6d27 generate code for node and pattern predicates. Note that this won't 
build if enabled, it will fail with constness issues. I'll resolve 
these next.

llvm-svn: 96336
 2010-02-16 07:21:10 +00:00
Chris Lattner
5a026d7367 refactor some code into a local class. 
llvm-svn: 96334
 2010-02-16 06:52:01 +00:00
Chris Lattner
eb72054cb3 remove now dead code and fixme. 
llvm-svn: 96333
 2010-02-16 06:15:00 +00:00
Chris Lattner
5901090df8 remove dead code. This is never generated for any targets in mainline. 
llvm-svn: 96332
 2010-02-16 06:14:22 +00:00
Chris Lattner
104828612b add support for the new isel matcher to generate 
(isprofitable|islegal)tofold checks.

llvm-svn: 96331
 2010-02-16 06:10:58 +00:00
Chris Lattner
b29b154904 make pcrel immediate values relative to the start of the field, 
not the end of the field, fixing rdar://7651978

llvm-svn: 96330
 2010-02-16 05:03:17 +00:00
Erick Tryzelaar
f4ca539af4 Fix a typo in an LLVMOpcode enum. LLVMTrunk -> LLVMTrunc. 
llvm-svn: 96324
 2010-02-16 03:45:23 +00:00
Erick Tryzelaar
f6e2c05ad6 Fix some ocaml documentation 
llvm-svn: 96323
 2010-02-16 03:45:17 +00:00
Sanjiv Gupta
29190e6398 The code section for an ISR has a specific address. 
Currently, whether a function is ISR or not is encoded in the section attribute for that function.

llvm-svn: 96322
 2010-02-16 03:41:07 +00:00
Dale Johannesen
622053fec3 Handle DBG_VALUE mixed with labels when doing PHI 
elimination.  Before a DBG_VALUE could affect codegen.
The solution here is imperfect and not final.

llvm-svn: 96318
 2010-02-16 01:57:28 +00:00
Rafael Espindola
8962ca0e05 Drop support for the InReg attribute on the ppc backend. This was used by 
llvm-gcc but has been replaced with pad argument which don't need any
special backend support.

llvm-svn: 96312
 2010-02-16 01:50:18 +00:00
Dan Gohman
d19ecedc40 Split the main for-each-use loop again, this time for GenerateTruncates, 
as it also peeks at which registers are being used by other uses. This
makes LSR less sensitive to use-list order.

llvm-svn: 96308
 2010-02-16 01:42:53 +00:00
Dale Johannesen
b410c3010b Reapply 96294; now that I've gotten around to looking 
at older buildbot messages, I see the failure predates
this patch.

llvm-svn: 96307
 2010-02-16 01:27:47 +00:00
Bill Wendling
7734240a2a Apply patch from http://llvm.org/bugs/attachment.cgi?id=4136 now that PR5004 is 
finished.

llvm-svn: 96304
 2010-02-16 00:58:02 +00:00
Dale Johannesen
df6f49fc2d Something broke. Hard to believe it was this patch 
but it's harder to believe it's the other candidate,
so reverting.  Temporarily I hope.

llvm-svn: 96303
 2010-02-16 00:43:58 +00:00
Dan Gohman
7d5c463d8e When reusing an existing PHI node in a loop, be even more 
strict about the requirements.

llvm-svn: 96301
 2010-02-16 00:20:08 +00:00
Bob Wilson
c85ee6018a Put repeated empty pattern into the AQI instruction class. 
We could almost use a multiclass for the signed/unsigned instructions, but
there are only 6 of them so I guess it's not worth it.

llvm-svn: 96297
 2010-02-15 23:43:47 +00:00
Evan Cheng
df9a8c9d49 Fix a memory leak. Patch by Nicolas Geoffray. 
llvm-svn: 96295
 2010-02-15 23:16:53 +00:00
Dale Johannesen
16ec2c06bc More handling of DBG_VALUE. 
llvm-svn: 96294
 2010-02-15 23:05:03 +00:00
Anton Korobeynikov
56e593f08e Add missed entry to cmake build list file 
llvm-svn: 96292
 2010-02-15 22:55:13 +00:00
Anton Korobeynikov
26310a84b1 Use ttype encoding consistently 
llvm-svn: 96290
 2010-02-15 22:38:25 +00:00
Anton Korobeynikov
e759b33cf5 Fix a silly darwin-only typo introduced during merge. 
llvm-svn: 96289
 2010-02-15 22:38:10 +00:00
Anton Korobeynikov
ef1862e256 Move TLOF implementations to libCodegen to resolve layering violation. 
llvm-svn: 96288
 2010-02-15 22:37:53 +00:00
Anton Korobeynikov
559e34c5fc It turns out that we emitted completely wrong common EH frame since the early beginning! The "z" CIE augmentation mark indicates that there is an extra word containing the size of augmentation section. However, even for frames w/o any augmentation data we emitted size uleb! (this is the case of "unwinding through C code"). Thus frame moves information was emitterd completely wrong. 
llvm-svn: 96287
 2010-02-15 22:36:41 +00:00
Anton Korobeynikov
4d16d87eb1 Add suffix for stubs, so we won't have name clashes with private symbols. 
llvm-svn: 96286
 2010-02-15 22:36:26 +00:00
Anton Korobeynikov
dccd240998 Preliminary patch to improve dwarf EH generation - Hooks to return Personality / FDE / LSDA / TType encoding depending on target / options (e.g. code model / relocation model) - MCIzation of Dwarf EH printer to use encoding information - Stub generation for ELF target (needed for indirect references) - Some other small changes here and there 
llvm-svn: 96285
 2010-02-15 22:35:59 +00:00
Nick Lewycky
b38ae458a4 Teach the verifier to check the condition on a branch and ensure that it has 
'i1' type.

llvm-svn: 96282
 2010-02-15 22:09:09 +00:00
Jakob Stoklund Olesen
143339a43a Fix PR6300. 
A virtual register can be used before it is defined in the same MBB if the MBB
is part of a loop. Teach the implicit-def pass about this case.

llvm-svn: 96279
 2010-02-15 22:03:29 +00:00
Bob Wilson
01e8d35855 Last week we were generating code with duplicate induction variables in this 
test, but the problem seems to have gone away today.  Add a check to make sure
it doesn't come back.

llvm-svn: 96277
 2010-02-15 21:56:40 +00:00
Nick Lewycky
a21f060918 Fix crash in VerifyType when checking Contexts. Because there may not be a 
Module (we were called with verifyFunction and an unowned Function) we can't
rely on Mod->getContext().

llvm-svn: 96275
 2010-02-15 21:52:04 +00:00
Nick Lewycky
1dcde6b319 Don't try to materialize a function that isn't materializable anyways. This 
fixes a crash using FPM on a Function that isn't owned by a Module.

llvm-svn: 96273
 2010-02-15 21:27:56 +00:00
Nick Lewycky
1357e1c99a A function with no Module owner isn't materializable. This fixes F->dump() for 
functions not embedded within modules.

llvm-svn: 96272
 2010-02-15 21:27:20 +00:00
Chris Lattner
2ce5f89c01 remove empty file. 
llvm-svn: 96271
 2010-02-15 21:14:50 +00:00
Daniel Dunbar
d01423cec1 Simplify. 
llvm-svn: 96269
 2010-02-15 21:08:22 +00:00
Bill Wendling
bbf95aae9f Remove c++ style comments from c header. 
llvm-svn: 96266
 2010-02-15 20:53:17 +00:00