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Author SHA1 Message Date
Mikhail Glushenkov
251988b823 Document the 'not' combinator. 
llvm-svn: 82956
 2009-09-28 01:16:07 +00:00
Mikhail Glushenkov
ef0b5e2f1a A bit prettier formatting. 
llvm-svn: 82955
 2009-09-28 01:15:44 +00:00
Dan Gohman
584645dfe8 Remove temporary debugging hack. 
llvm-svn: 82953
 2009-09-28 00:44:15 +00:00
Dan Gohman
bd50ec69e4 Move the dominator verification code out of special code embedded within 
the PassManager code into a regular verifyAnalysis method.

Also, reorganize loop verification. Make the LoopPass infrastructure
call verifyLoop as needed instead of having LoopInfo::verifyAnalysis
check every loop in the function after each looop pass. Add a new
command-line argument, -verify-loop-info, to enable the expensive
full checking.

llvm-svn: 82952
 2009-09-28 00:27:48 +00:00
Dan Gohman
195c5bdf41 Move this assert to check the condition as soon as it is known. 
llvm-svn: 82951
 2009-09-28 00:10:28 +00:00
Dan Gohman
09f5f7f190 Extend the StartPassTimer and StopPassTimer functions so that the 
code that stops the timer doesn't have to search to find the timer
object before it stops the timer. This avoids a lock acquisition
and a few other things done with the timer running.

llvm-svn: 82949
 2009-09-28 00:07:05 +00:00
Anton Korobeynikov
189ce11684 Use movt/movw pair to materialize 32 bit constants on ARMv6T2+. 
This should be better than single load from constpool.

llvm-svn: 82948
 2009-09-27 23:52:58 +00:00
Dan Gohman
000a17774e Fix an old copy+pasto. 
llvm-svn: 82947
 2009-09-27 23:52:07 +00:00
Dan Gohman
db89691ec4 Extract the code for inserting a loop into the loop queue into 
a separate function.

llvm-svn: 82946
 2009-09-27 23:49:43 +00:00
Dan Gohman
0ea6efde4e When a loop is deleted, immediately release all of the active 
LoopPasses for that loop. This avoids trouble with the PassManager
trying to call verifyAnalysis on them, and frees up some memory
sooner rather than later.

llvm-svn: 82945
 2009-09-27 23:43:07 +00:00
Dan Gohman
fdd9a2ee96 Extract the code for releasing a pass into a separate function, and 
tidy it up a little.

llvm-svn: 82944
 2009-09-27 23:38:27 +00:00
Nick Lewycky
04cea17209 Remove the "metadata*" type and simplify the code it complicated. This was only 
used to support GlobalVariables storing MDNodes, back when they were derived
from Constant before the introduction of NamedMDNode, but never removed.

llvm-svn: 82943
 2009-09-27 23:27:42 +00:00
Dan Gohman
cd2dd6b7e6 LBRX no longer has an explicit SrcValueSDNode operand, so the type 
operand is now at index 2, rather than 3. This fixes the
"Invalid child # of SDNode!" failures on PowerPC.

llvm-svn: 82942
 2009-09-27 23:17:47 +00:00
Chris Lattner
2a85cfd972 simplify some code. 
llvm-svn: 82936
 2009-09-27 21:46:50 +00:00
Chris Lattner
75a5d76294 The bitcast case is not needed here: instcombine turns icmp(bitcast(x), null) -> icmp(x, null) already. 
llvm-svn: 82935
 2009-09-27 21:42:46 +00:00
Nick Lewycky
6057c1a998 New unit test for the cloning module, which so far only covers cloning of 
instructions' optimization flags.

llvm-svn: 82934
 2009-09-27 21:39:46 +00:00
Chris Lattner
e024fd6b47 calls are already unmovable, malloc doesn't need a special case. 
llvm-svn: 82933
 2009-09-27 21:36:19 +00:00
Chris Lattner
8a77e8b353 calls to external functions are already marked overdefined, special casing 
malloc isn't needed.

llvm-svn: 82932
 2009-09-27 21:35:11 +00:00
Chris Lattner
bb29bb4e16 calls are already handled, malloc doesn't need a special case. 
llvm-svn: 82931
 2009-09-27 21:33:46 +00:00
Nick Lewycky
81504d2150 Round out the API for the new optimization flags. 
llvm-svn: 82930
 2009-09-27 21:33:04 +00:00
Chris Lattner
24af6de20a calls are rejected above, no need to special case malloc here. 
llvm-svn: 82929
 2009-09-27 21:31:39 +00:00
Chris Lattner
0cfb82cf8c remove special handling of bitcast(malloc), it will be handled 
when the loop inspects the bitcast operand.

llvm-svn: 82928
 2009-09-27 21:29:28 +00:00
Chris Lattner
3f320467b5 unlike the malloc instruction, "malloc" calls do not claim to be readonly, just nounwind. 
llvm-svn: 82927
 2009-09-27 21:23:38 +00:00
Chris Lattner
4ab9414b7c add a new DirectiveMap stringmap, which allows more efficient dispatching 
to directive handlers and allows for easier extensibility.

I only switched a few over for now.

llvm-svn: 82926
 2009-09-27 21:16:52 +00:00
Nick Lewycky
171d7954c3 Link order: it matters. 
llvm-svn: 82925
 2009-09-27 20:58:01 +00:00
Chris Lattner
7a9e470ddc allow pushing icmps through phis with multiple uses and across critical edges. 
These are important to push up to encourage jump threading.  This shrinks 176.gcc a bit.

llvm-svn: 82923
 2009-09-27 20:46:36 +00:00
Chris Lattner
f7db1f1a3a Enhance the previous fix for PR4895 to allow more values than just 
simple constants for the true/false value of the select.  We now
do phi translation etc.  This really fixes PR4895 :)

llvm-svn: 82917
 2009-09-27 20:18:49 +00:00
Chris Lattner
0af7f0ceaf implement PR4895, by making FoldOpIntoPhi handle select conditions 
that are phi nodes.  Also tighten up FoldOpIntoPhi to treat constantexpr
operands to phis just like other variables, avoiding moving constantexpr
computations around.

Patch by Daniel Dunbar.

llvm-svn: 82913
 2009-09-27 19:57:57 +00:00
Chris Lattner
80349d5875 avoid copying MCAsmInfo by value, add an (extremely low prio) fixme. 
llvm-svn: 82911
 2009-09-27 19:38:39 +00:00
Tilmann Scheller
a23802520a Use explicit structs instead of std::pair to map callee saved regs to spill slots. 
llvm-svn: 82909
 2009-09-27 17:58:47 +00:00
Dan Gohman
2d607af763 Delete a bogus comment. 
llvm-svn: 82908
 2009-09-27 17:50:44 +00:00
Dan Gohman
89b2635c5c Remove a redundant assert. 
llvm-svn: 82907
 2009-09-27 17:48:37 +00:00
Jeffrey Yasskin
195b24c844 Enable -g with DEBUG_SYMBOLS and --enable-debug-symbols instead of 
DEBUG_RUNTIME.

llvm-svn: 82906
 2009-09-27 17:47:29 +00:00
Dan Gohman
8b4c141d97 Fix SCEVExpander's canonical addrec expansion code to work on loops that 
aren't in canonical loop-simplify form, since it doesn't itself depend
on LoopSimplify. This means handling loops without preheaders and loops
with multiple backedges.

llvm-svn: 82905
 2009-09-27 17:46:40 +00:00
Dan Gohman
3248b82ffc Add dominates and releaseMemory member functions to PostDominatorTree. 
llvm-svn: 82904
 2009-09-27 17:39:12 +00:00
Dan Gohman
641ab5a61e Grab an LLVM Context from an instruction that exists rather than one 
that is deleted in some situations. This fixes a use-after-free.

llvm-svn: 82903
 2009-09-27 16:10:30 +00:00
Dan Gohman
473ca67150 Clarify a comment. 
llvm-svn: 82902
 2009-09-27 15:41:19 +00:00
Dan Gohman
fa43cefae4 Tell ScalarEvolution to forget everything it knows about a loop before 
rotating the loop, since loop rotation is a very significant change.

llvm-svn: 82901
 2009-09-27 15:37:03 +00:00
Dan Gohman
eb9dbb2bd2 Micro-optimize DerivedType::dropAllTypeUses. 
llvm-svn: 82900
 2009-09-27 15:32:21 +00:00
Dan Gohman
16398e3bc0 Instead of testing whether an instruction dominates the loop preheader, 
test whether it properly dominates the loop header. This is equivalent
when the loop has a preheader, and has the advantage of working when
the loop doesn't have a preheader. Since IVUsers doesn't Require
LoopSimplify, the loop isn't guaranteed to have a preheader.

llvm-svn: 82899
 2009-09-27 15:30:00 +00:00
Dan Gohman
b84f5a3421 Add a properlyDominates member function to ScalarEvolution. 
llvm-svn: 82898
 2009-09-27 15:26:03 +00:00
Dan Gohman
9cc0852f45 Remove a redundant #include. 
llvm-svn: 82897
 2009-09-27 15:21:52 +00:00
Torok Edwin
dd5b0b7cda Avoid using mutex locks if not in multithreaded mode by using a SmartScopedMutex 
in RegisterStatistic.

llvm-svn: 82896
 2009-09-27 11:08:03 +00:00
Evan Cheng
ffe6da0734 Enable pre-regalloc load / store multiple pass for Thumb2. 
llvm-svn: 82893
 2009-09-27 09:46:04 +00:00
Chris Lattner
d66a99e60a rename REG -> REGISTER to make it explicit in the doc. <tt>ify some stuff. 
llvm-svn: 82892
 2009-09-27 08:01:44 +00:00
Chris Lattner
80d69b5973 implement and document support for filecheck variables. This 
allows matching and remembering a string and then matching and
verifying that the string occurs later in the file.

Change X86/xor.ll to use this in some cases where the test was
checking for an arbitrary register allocation decision.

llvm-svn: 82891
 2009-09-27 07:56:52 +00:00
Nick Lewycky
676778014b Remove dead code from this function and optimize. Update its corresponding 
LangRef entry too.

llvm-svn: 82890
 2009-09-27 07:55:32 +00:00
Nick Lewycky
d21c325f09 Instruction::clone does not need to take an LLVMContext&. Remove that and 
update all the callers.

llvm-svn: 82889
 2009-09-27 07:38:41 +00:00
Nick Lewycky
6ea218a96b Filecheckify this one test. 
llvm-svn: 82888
 2009-09-27 06:25:05 +00:00
Nick Lewycky
18d420fde7 Leave a pointer to the documentation so that people don't end up change one but 
not the other in the future.

llvm-svn: 82887
 2009-09-27 04:57:35 +00:00