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Author SHA1 Message Date
Devang Patel
de49dd9087 NamedMDNode is never used so there is no need to enumerate it here. 
llvm-svn: 93039
 2010-01-09 01:24:03 +00:00
Julien Lerouge
76c75e82d0 Fix nondeterministic behavior. 
llvm-svn: 93038
 2010-01-09 01:06:49 +00:00
Devang Patel
fbb47c2300 NamedMDNode element is either null or MDNode. Otherwise this is a malformed NamedMDNode record. 
llvm-svn: 93037
 2010-01-09 01:02:22 +00:00
Devang Patel
ea208bf99c Derive NamedMDNode from Value. 
llvm-svn: 93032
 2010-01-09 00:30:14 +00:00
Evan Cheng
afa00d14db Dan pointed out checking whether a node is dead by comparing its opcode to ISD::DELETED_NODE is not safe. Use a DAGUpdateListener to remove dead nodes from work list instead. 
llvm-svn: 93031
 2010-01-09 00:21:08 +00:00
Dale Johannesen
610f0ce9aa Add DEBUG_VALUE. Not used yet. 
llvm-svn: 93030
 2010-01-08 23:51:25 +00:00
Evan Cheng
2e497d1ed4 Fix a critical bug in 64-bit atomic operation lowering for 32-bit. The results of the cmpxchg8b instructions are being thrown away when it branches back to the top of the checking loop. This means the loop always compares against the old value and this can result in a dead lock. 
llvm-svn: 93028
 2010-01-08 23:41:50 +00:00
Eric Christopher
79200db8b8 Grammar thinko. 
llvm-svn: 93027
 2010-01-08 21:42:39 +00:00
Eric Christopher
937778e8d0 Remove unnecessary dyn_cast and add a comment. Part of a WIP. 
llvm-svn: 93026
 2010-01-08 21:37:11 +00:00
Chris Lattner
fd117b63f7 mplement a theoretical fixme. 
llvm-svn: 93024
 2010-01-08 19:28:47 +00:00
Chris Lattner
474cd30fb7 rename CanEvaluateInDifferentType -> CanEvaluateTruncated and 
simplify it now that it is only used for truncates.

llvm-svn: 93021
 2010-01-08 19:19:23 +00:00
Evan Cheng
8b248e5016 Fix comment. 
llvm-svn: 93020
 2010-01-08 19:14:57 +00:00
Chris Lattner
05ae88cc8f teach instcombine to delete sign extending shift pairs (sra(shl X, C), C) when 
the input is already sign extended.

llvm-svn: 93019
 2010-01-08 19:04:21 +00:00
Chris Lattner
0dc48180de fix PR5978 by peeling the loop so that we avoid shifting the 
result int by 8 for the first byte.  While normally harmless,
if the result is smaller than a byte, this shift is invalid.

llvm-svn: 93018
 2010-01-08 19:02:23 +00:00
Duncan Sands
c94f8aeb36 Suppress an unused variable warning when assertions are off; 
remove some trailing whitespace while there.

llvm-svn: 93008
 2010-01-08 17:51:48 +00:00
Chris Lattner
725b9ba4e5 tidy up some stuff duncan pointed out. 
llvm-svn: 93007
 2010-01-08 17:48:19 +00:00
Johnny Chen
f782ccee01 Minor change, change the order of two "let Inst{...}" stmts within multiclass 
T2I_bin_ii12rs definition.

llvm-svn: 93006
 2010-01-08 17:41:33 +00:00
Eric Christopher
067afe673c After further thought revert the patch to make fast-isel avoid 
putting relocations into the constant pool - this isn't needed
for correctness and in the rare occasion it happens would pull
us out of fast isel for the block.

If fast-isel application startup time ever becomes an issue we
can add better support for these addresses instead of bailing.

llvm-svn: 92995
 2010-01-08 08:24:49 +00:00
Evan Cheng
f96a9ec02b ReplaceAllUsesOfValueWith may delete other nodes that the one being replaced. Do not delete dead nodes again. 
llvm-svn: 92988
 2010-01-08 02:36:12 +00:00
Evan Cheng
4f25f87baa Fix what looks to me obvious instruction definition bugs. 
1. CMPXCHG8B and CMPXCHG16B did not specify implicit physical register defs and uses.
2. LCMPXCHG8B is loading 64 bit memory, not 32 bit.

llvm-svn: 92985
 2010-01-08 01:29:19 +00:00
Eric Christopher
2a3196c2e5 Remove extraneous include. 
llvm-svn: 92972
 2010-01-08 00:05:33 +00:00
Tobias Grosser
b73235c0d0 Add assert to check dominance dfs numbers. 
Compare the dominance information calculated using a dominance tree walk to the
information calculated based on DFS numbers, if XDEBUG is enabled.

llvm-svn: 92969
 2010-01-07 23:50:41 +00:00
Tobias Grosser
35528e6f1d Remove workaround in PostDominators 
Remove a FIXME and unify code that was necessary to work around broken
updateDFSNumbers().  Before updateDFSNumbers() did not work correctly for post
dominators.

llvm-svn: 92968
 2010-01-07 23:50:25 +00:00
Tobias Grosser
fbc9ea7841 Fix DFS number calculation for postdominators 
The DFS number calculation for postdominators was broken. In the case of
multiple exits that form the post dominator root nodes, do not iterate over
all exits, but start from the virtual root node. Otherwise bbs, that are not
post dominated by any exit but by the virtual root node, will never be assigned
a DFS number.

llvm-svn: 92967
 2010-01-07 23:50:06 +00:00
Chris Lattner
944f9c4ac1 teach ComputeNumSignBits to look through PHI nodes. 
llvm-svn: 92964
 2010-01-07 23:44:37 +00:00
Chris Lattner
b8ec2bccaf filecheckize 
llvm-svn: 92963
 2010-01-07 23:42:23 +00:00
Chris Lattner
db8fa82914 Enhance instcombine to reason more strongly about promoting computation 
that feeds into a zext, similar to the patch I did yesterday for sext.
There is a lot of room for extension beyond this patch.

llvm-svn: 92962
 2010-01-07 23:41:00 +00:00
Chris Lattner
e0199dff81 Fix rdar://7517201, a regression introduced by r92849. 
When folding a and(any_ext(load)) both the any_ext and the
load have to have only a single use.

This removes the anyext-uses.ll testcase which started failing
because it is unreduced and unclear what it is testing.

llvm-svn: 92950
 2010-01-07 21:59:23 +00:00
Chris Lattner
f68e328a99 factor this code better and reduce nesting at the same 
time, no functionality change.

llvm-svn: 92948
 2010-01-07 21:53:27 +00:00
David Greene
c3f9f7a3db Revert r92939. These intrinsics get matched to LLVM instructions, 
so removing at Chris' request.

llvm-svn: 92947
 2010-01-07 21:43:58 +00:00
Evan Cheng
4523041394 APInt'fy TargetLowering::SimplifySetCC to fix PR5963. 
llvm-svn: 92943
 2010-01-07 20:58:44 +00:00
David Greene
7c9c709d3d Add some "missing" instrinsics to make the SSE intrinsic set a bit more 
orthogonal.

llvm-svn: 92939
 2010-01-07 19:47:43 +00:00
Benjamin Kramer
bbaf8cac38 Simplify code. No intended functionality/performance change. 
llvm-svn: 92938
 2010-01-07 19:46:15 +00:00
Eric Christopher
d218bc7a2f If the data requires a relocation then don't attempt to 
add it to the constant pool for fast-isel. We already
don't add it for the normal case.

llvm-svn: 92934
 2010-01-07 19:45:14 +00:00
Eric Christopher
1d452e5c87 We need to put any kind of data with a relocation into a 
not-readonly segment on darwin.

llvm-svn: 92933
 2010-01-07 19:44:05 +00:00
Devang Patel
10ee76f7f4 Use separate namespace for named metadata. 
llvm-svn: 92931
 2010-01-07 19:39:36 +00:00
Kovarththanan Rajaratnam
3a038bba47 Fix occurrence typo 
llvm-svn: 92926
 2010-01-07 18:46:52 +00:00
Chris Lattner
320b635dfd constant materialization could be improved. 
llvm-svn: 92921
 2010-01-07 17:53:10 +00:00
Benjamin Kramer
badb9914d2 Kill dead store. 
llvm-svn: 92920
 2010-01-07 17:50:57 +00:00
Benjamin Kramer
a97aab4995 Remove dead variable. 
llvm-svn: 92919
 2010-01-07 17:29:08 +00:00
Benjamin Kramer
22ec2524fd Use pop_back_val instead of back()+pop_back. 
llvm-svn: 92918
 2010-01-07 17:27:56 +00:00
Benjamin Kramer
df696ee6b4 Use a do-while loop instead of while + boolean. 
llvm-svn: 92912
 2010-01-07 13:50:07 +00:00
Duncan Sands
fa59842d87 Correct spelling. 
llvm-svn: 92910
 2010-01-07 09:05:26 +00:00
Duncan Sands
8299315be7 Be less stingy as to how many selects and phi nodes we 
are prepared to look through.

llvm-svn: 92898
 2010-01-07 05:48:42 +00:00
Douglas Gregor
c8114b239b More trivial optimizations to a function well outside the critical path 
llvm-svn: 92896
 2010-01-07 02:24:06 +00:00
Chris Lattner
1a64e58fa3 handle ConstantVector while I'm in here. 
llvm-svn: 92892
 2010-01-07 01:20:20 +00:00
Chris Lattner
0b0caf0877 fix a globalopt crash on 'bullet' (handling evaluation of a store 
to an element of a vector in a static ctor) which occurs with an 
unrelated patch I'm testing.  Annoyingly, EvaluateStoreInto basically 
does exactly the same stuff as InsertElement constant folding, but it
now handles vectors, and you can't insertelement into a vector.  It
would be 'really nice' if GEP into a vector were not legal.

llvm-svn: 92889
 2010-01-07 01:16:21 +00:00
Evan Cheng
51d86260ff Fix a minor regression from my dag combiner changes. One more place which needs to look pass truncates. 
llvm-svn: 92885
 2010-01-07 00:54:06 +00:00
Douglas Gregor
b7161a0b1c Switch StringRef::edit_distance over to using raw pointers, since both 
std::vector and llvm::SmallVector have annoying performance
tradeoffs. No, I don't expect this to matter, and now it won't.

llvm-svn: 92884
 2010-01-07 00:51:54 +00:00
Jakob Stoklund Olesen
09012552b8 Add comments. 
llvm-svn: 92883
 2010-01-07 00:51:04 +00:00