34268 Commits

Author SHA1 Message Date
Chris Lattner
bf3d03b576 fix hte last remaining known (by me) phi translation bug. When we reanalyze
clobbers to forward pieces of large stores to small loads, we need to consider
the properly phi translated pointer in the store block.

llvm-svn: 90978
2009-12-09 18:21:46 +00:00
Chris Lattner
a97922837e change GetStoreValueForLoad to use IRBuilder, which is cleaner and
implicitly constant folds.

llvm-svn: 90977
2009-12-09 18:13:28 +00:00
Bob Wilson
9e68616e49 Fix a comment.
llvm-svn: 90975
2009-12-09 18:05:27 +00:00
Chris Lattner
2f9b661ab8 Add a minor optimization: if we haven't changed the operands of an
add, there is no need to scan the world to find the same add again.
This invalidates the previous testcase, which wasn't wonderful anyway,
because it needed a run of instcombine to permute the use-lists in 
just the right way to before GVN was run (so it was really fragile).
Not a big loss.

llvm-svn: 90973
2009-12-09 17:27:45 +00:00
Chris Lattner
e05f9a128c fix PR5733, a case where we'd replace an add with a lexically identical
binary operator that wasn't an add.  In this case, a xor.  Whoops.

llvm-svn: 90971
2009-12-09 17:18:49 +00:00
David Goodwin
2bc2d833ab <rdar://problem/7453528>. Track only physical registers that are valid for the target.
llvm-svn: 90970
2009-12-09 17:18:22 +00:00
Chris Lattner
db0baa713d change AnalyzeLoadFromClobberingMemInst/AnalyzeLoadFromClobberingStore
to require the load ty/ptr to be passed in, no functionality change.

llvm-svn: 90960
2009-12-09 07:37:07 +00:00
Chris Lattner
b3587059c8 change AnalyzeLoadFromClobberingWrite and clients to pass in type
and pointer instead of the load.  No functionality change.

llvm-svn: 90959
2009-12-09 07:34:10 +00:00
Chris Lattner
366b8ac755 enhance NonLocalDepEntry to keep the per-block phi translated address
of the query.

llvm-svn: 90958
2009-12-09 07:31:04 +00:00
Daniel Dunbar
a8dc0ca084 DeltaAlgorithm: Add a virtual destructor and home.
llvm-svn: 90957
2009-12-09 07:19:48 +00:00
Chris Lattner
e0207b46d2 change NonLocalDepEntry from being a typedef for an std::pair to be its
own small class.  No functionality change.

llvm-svn: 90956
2009-12-09 07:08:01 +00:00
Lang Hames
a5a7da896e Added a new "splitting" spiller.
When a call is placed to spill an interval this spiller will first try to
break the interval up into its component values. Single value intervals and
intervals which have already been split (or are the result of previous splits)
are spilled by the default spiller.

Splitting intervals as described above may improve the performance of generated
code in some circumstances. This work is experimental however, and it still
miscompiles many benchmarks. It's not recommended for general use yet.

llvm-svn: 90951
2009-12-09 05:39:12 +00:00
Daniel Dunbar
3d073e0978 Remove spurious extern.
llvm-svn: 90937
2009-12-09 03:26:33 +00:00
Chris Lattner
4645bb977a add some aborts to #if 0's.
llvm-svn: 90929
2009-12-09 02:41:54 +00:00
Chris Lattner
dda5ca59e2 Switch GVN and memdep to use PHITransAddr, which correctly handles
phi translation of complex expressions like &A[i+1].  This has the
following benefits:

1. The phi translation logic is all contained in its own class with
   a strong interface and verification that it is self consistent.

2. The logic is more correct than before.  Previously, if intermediate
   expressions got PHI translated, we'd miss the update and scan for
   the wrong pointers in predecessor blocks.  @phi_trans2 is a testcase
   for this.

3. We have a lot less code in memdep.

We can handle phi translation across blocks of things like @phi_trans3,
which is pretty insane :).

This patch should fix the miscompiles of 255.vortex, and I tested it 
with a bootstrap of llvm-gcc, llvm-test and dejagnu of course.

llvm-svn: 90926
2009-12-09 01:59:31 +00:00
Evan Cheng
41c13e41fe Teach InferPtrAlignment to infer GV+cst alignment and use it to simplify x86 isl lowering code.
llvm-svn: 90925
2009-12-09 01:53:58 +00:00
Evan Cheng
7941695285 Move isConsecutiveLoad to SelectionDAG. It's not target dependent and it's primary used by selectdag passes.
llvm-svn: 90922
2009-12-09 01:36:00 +00:00
Chris Lattner
9c2474e272 fix a nasty variable that was shadowing the real CurBB but with the wrong value.
llvm-svn: 90920
2009-12-09 01:19:16 +00:00
Evan Cheng
ad75af2aa2 Infer alignment for non-fixed stack object.
llvm-svn: 90919
2009-12-09 01:17:24 +00:00
Evan Cheng
293ec7b394 Add const qualifier.
llvm-svn: 90918
2009-12-09 01:10:37 +00:00
Evan Cheng
b925774a74 Refactor InferAlignment out of DAGCombine.
llvm-svn: 90917
2009-12-09 01:04:59 +00:00
Chris Lattner
3211af28ba fix many input tracking bugs.
llvm-svn: 90915
2009-12-09 00:56:14 +00:00
Dan Gohman
ed3d370a10 Fix a typo in a comment, and adjust SmallSet and SmallVector sizes,
that Chris noticed.

llvm-svn: 90910
2009-12-09 00:28:42 +00:00
Chris Lattner
c457aaea0d fix PHI translation to take the PHI out of the instinputs set and add
the translated value back to it if an instruction.

llvm-svn: 90909
2009-12-09 00:18:13 +00:00
Chris Lattner
b0d20540ad instructions defined in CurBB may be intermediate nodes of the computation.
llvm-svn: 90908
2009-12-09 00:10:55 +00:00
Chris Lattner
83cb0b1450 add dumping and sanity checking support.
llvm-svn: 90906
2009-12-09 00:01:00 +00:00
Dan Gohman
2d7d4fb9a6 Put a threshold on the number of users PointerMayBeCaptured
examines; fall back to a conservative answer if there are
more. This works around some several compile time problems
resulting from BasicAliasAnalysis calling PointerMayBeCaptured.

The value has been chosen arbitrarily.

This fixes rdar://7438917 and may partially address PR5708.

llvm-svn: 90905
2009-12-08 23:59:12 +00:00
Chris Lattner
604cebbfc1 make sure that PHITransAddr keeps its 'InstInputs' list up to
date when instsimplify kicks in.

llvm-svn: 90901
2009-12-08 23:42:51 +00:00
Devang Patel
11874672da Revert 90858 90875 and 90805 for now.
llvm-svn: 90898
2009-12-08 23:21:45 +00:00
Evan Cheng
edcc21919f - Support inline asm 'w' constraint for 128-bit vector types.
- Also support the 'q' NEON registers asm code.

llvm-svn: 90894
2009-12-08 23:06:22 +00:00
Bob Wilson
04cc375a1a Some superficial cleanups.
llvm-svn: 90866
2009-12-08 18:27:03 +00:00
Bob Wilson
d673b32280 Clean up dead operands left around after SROA replaces a mem intrinsic.
I'm not aware that this does anything significant on its own, but it's
needed for another patch that I'm working on.

llvm-svn: 90864
2009-12-08 18:22:03 +00:00
Devang Patel
5905a705fe Cleanup.
There is no need to supply ModuleCU to addType() as a parameter.

llvm-svn: 90858
2009-12-08 15:31:31 +00:00
Devang Patel
cb39ef375f Do not try to push dead variable's debug info into namespace info.
llvm-svn: 90857
2009-12-08 15:01:35 +00:00
Benjamin Kramer
2d6d1651cf Remove useless calls to c_str().
llvm-svn: 90855
2009-12-08 13:07:38 +00:00
Duncan Sands
897f9579d6 Teach GlobalOpt to delete aliases with internal linkage (after
forwarding any uses).  GlobalDCE can also do this, but is only
run at -O3.

llvm-svn: 90850
2009-12-08 10:10:20 +00:00
Chris Lattner
8cc673c6a0 fix a typo (and -> add) and fix GetAvailablePHITranslatedSubExpr to not
side-effect the current object.

llvm-svn: 90837
2009-12-08 06:06:26 +00:00
Nick Lewycky
5a00cea348 Remove unnecessary #include "llvm/LLVMContext.h".
llvm-svn: 90836
2009-12-08 05:45:41 +00:00
Chris Lattner
acc9c4f542 whitespace cleanup
llvm-svn: 90834
2009-12-08 05:31:46 +00:00
Anton Korobeynikov
0ace515a4c Reduce (cmp 0, and_su (foo, bar)) into (bit foo, bar). This saves extra instruction. Patch inspired by Brian Lucas!
llvm-svn: 90819
2009-12-08 01:03:04 +00:00
Evan Cheng
58a787bc55 Watch out for duplicated PHI instructions.
llvm-svn: 90816
2009-12-07 23:11:03 +00:00
Evan Cheng
fe32f969cd Follow up to 90488. Turn a check into an assertion.
llvm-svn: 90815
2009-12-07 23:10:34 +00:00
Jeffrey Yasskin
d9047c44e4 Fix the OProfileJITEventListener for StringRef being returned from debug info.
llvm-svn: 90813
2009-12-07 22:32:38 +00:00
Victor Hernandez
f5143485fa Rename DIFactory::InsertValue() as DIFactory::InsertDbgValueIntrinsic()
llvm-svn: 90807
2009-12-07 21:54:43 +00:00
Devang Patel
e59f4f7204 Add support to emit debug info for c++ style namespaces.
llvm-svn: 90805
2009-12-07 21:41:32 +00:00
Evan Cheng
72c07bfcad Delete code accidentally left behind.
llvm-svn: 90804
2009-12-07 21:19:33 +00:00
Chris Lattner
3d338590d6 fix typo
llvm-svn: 90793
2009-12-07 19:52:57 +00:00
Chris Lattner
9ed7e3ffb9 add accessor, improve comment.
llvm-svn: 90792
2009-12-07 19:45:30 +00:00
Victor Hernandez
2a16652946 Introduce the "@llvm.dbg.value" debug intrinsic.
The semantics of llvm.dbg.value are that starting from where it is executed, an offset into the specified user source variable is specified to get a new value.

An example:
  call void @llvm.dbg.value(metadata !{ i32 7 }, i64 0, metadata !2)
Here the user source variable associated with metadata #2 gets the value "i32 7" at offset 0.
 

llvm-svn: 90788
2009-12-07 19:36:34 +00:00
Chris Lattner
233d9bf82d add support for phi translation and incorpation of new expression.
llvm-svn: 90782
2009-12-07 19:04:49 +00:00