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Author SHA1 Message Date
Chris Lattner
492e9ca5a4 Inline the expression type promotion/demotion stuff out of 
commonIntCastTransforms into the callers, eliminating a switch,
and allowing the static predicate  methods to be moved down to
live next to the corresponding function.  No functionality 
change.

llvm-svn: 93089
 2010-01-10 00:58:42 +00:00
Chris Lattner
3f06b3d517 hopefully unbreak the ocaml bindings. 
llvm-svn: 93082
 2010-01-09 23:25:21 +00:00
Chris Lattner
776dc048ef add 3 passes which have been added but aren't used afaik. 
llvm-svn: 93080
 2010-01-09 22:30:40 +00:00
Chris Lattner
953394de82 "In order to ease automatic bindings generation, it would be helpful if boolean values were distinguishable from integers. The attached patch introduces "typedef int LLVMBool;", and uses LLVMBool instead of int throughout the C API, wherever a boolean value is called for." 
Patch by James Y Knight!

llvm-svn: 93079
 2010-01-09 22:27:07 +00:00
Jeffrey Yasskin
c514410b5e Clarify the requirements for a "tail call" to actually be optimized into a 
jump.  People clearly weren't finding the extra requirements in
CodeGenerator.html.

llvm-svn: 93070
 2010-01-09 19:44:16 +00:00
Chris Lattner
c3905a79e4 fix bogus test 
llvm-svn: 93069
 2010-01-09 19:24:49 +00:00
Chris Lattner
2abed51288 fix bogus test 
llvm-svn: 93068
 2010-01-09 19:24:18 +00:00
Chris Lattner
8e44e4eddc fix PR5983, reject function bodies with no blocks per the grammar. 
llvm-svn: 93067
 2010-01-09 19:20:07 +00:00
Chris Lattner
c6ac6d3531 improve documentation for linkonce to be less confusing. 
llvm-svn: 93066
 2010-01-09 19:15:14 +00:00
Jeffrey Yasskin
53a8f3981c Fix http://llvm.org/PR5729: x86-64 tail calls were putting their targets into 
R11, and then asserting that the target was in R9.  Since R9 isn't reserved for
the target anymore, and is used as an argument, this patch changes the
assertion.

llvm-svn: 93065
 2010-01-09 18:56:43 +00:00
Chris Lattner
9de6f439d3 2010 is upon us. 
llvm-svn: 93062
 2010-01-09 18:40:31 +00:00
Dan Gohman
771144e807 Use WriteAsOperand instead of getName() to print loop header names, 
so that unnamed blocks are handled.

llvm-svn: 93059
 2010-01-09 18:17:45 +00:00
Dan Gohman
123aee69c0 Tighten up the vim LLVM IR syntax highlighting regex for labels, and add a 
highlighting rule for identifiers.

llvm-svn: 93056
 2010-01-09 17:22:48 +00:00
Dan Gohman
03fedbe06b Set the vim auto-indent setting for open braces after case statements to 
follow LLVM source convention.

Before:
  case X: {
            stuff;
          }

After:
  case X: {
    stuff;
  }

llvm-svn: 93055
 2010-01-09 17:15:21 +00:00
David Chisnall
edfb3fc27c Fixed linking of modules containing aliases to constant bitcasts. Existing behaviour first tried to replace the aliases with the global that they aliased (rather than the bitcast), causing a crash on an assert because the types didn't match. When this was fixed, it then did the same thing creating the new alias (creating an alias with a different type to its aliasee). 
Linking modules containing aliases to GEPs is still not quite right.  GEPs that are equivalent to bitcasts will be replaced by bitcasts, GEPs that are not will just break.  Aliases to GEPs that are not equivalent to bitcasts are horribly broken anyway (it might be worth adding an assert when creating the alias to prevent these being created; they just cause problems later).

llvm-svn: 93052
 2010-01-09 16:27:31 +00:00
Duncan Sands
8f97b49457 Suppress use of uninitialized variable warning. 
llvm-svn: 93046
 2010-01-09 08:30:33 +00:00
Chris Lattner
b142e13f84 only factor from expressions whose uses are empty and whose 
base is the right expression type.  This fixes PR5981.

llvm-svn: 93045
 2010-01-09 06:01:36 +00:00
Dan Gohman
3708af1c59 Revert an earlier change to SIGN_EXTEND_INREG for vectors. The VTSDNode 
really does need to be a vector type, because
TargetLowering::getOperationAction for SIGN_EXTEND_INREG uses that type,
and it needs to be able to distinguish between vectors and scalars.

Also, fix some more issues with legalization of vector casts.

llvm-svn: 93043
 2010-01-09 02:13:55 +00:00
Chris Lattner
8a92d699f8 clean up this code, add a fixme. 
llvm-svn: 93042
 2010-01-09 02:02:37 +00:00
Devang Patel
bd58ff3f60 Delete NamedMDSymTable while destrucing Module. 
Disable  copy ctor and operator= for NamedMDSymTable. Hide typedef that should be public.

llvm-svn: 93041
 2010-01-09 01:44:59 +00:00
Dale Johannesen
0e21161e32 Add DEBUG_DECLARE. Not used yet. 
llvm-svn: 93040
 2010-01-09 01:24:25 +00:00
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