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Author SHA1 Message Date
Chris Lattner
d8b755ed95 add a generic "bitmangled pointer" class, which allows a parameterized 
pointer and integer type to be used.

llvm-svn: 60224
 2008-11-28 23:31:44 +00:00
Chris Lattner
494758e720 Fix PR3141 by ensuring that MemoryDependenceAnalysis::removeInstruction 
properly updates the reverse dependency map when it installs updated 
dependencies for instructions that depend on the removed instruction.

llvm-svn: 60222
 2008-11-28 22:51:08 +00:00
Chris Lattner
aedb1385c2 don't revisit instructions off the beginning of the block. 
llvm-svn: 60221
 2008-11-28 22:50:08 +00:00
Chris Lattner
7376e32840 comment cleanups. 
llvm-svn: 60220
 2008-11-28 22:41:36 +00:00
Chris Lattner
219e9af693 more cleanups for MemoryDependenceAnalysis::removeInstruction, 
no functionality change.

llvm-svn: 60219
 2008-11-28 22:28:27 +00:00
Chris Lattner
7b984beb45 random cleanups, no functionality change. 
llvm-svn: 60218
 2008-11-28 22:04:47 +00:00
Chris Lattner
8fc7870ff1 forward declare CallSite instead of #includ'ing it. 
llvm-svn: 60217
 2008-11-28 21:47:19 +00:00
Chris Lattner
ef04ddf87c Run verifyRemoved from removeInstruction when -debug is specified. 
This shows the root problem behind PR3141.

llvm-svn: 60216
 2008-11-28 21:45:17 +00:00
Chris Lattner
cc3a3c0c98 rename "ping" to "verifyRemoved". I don't know why 'ping' what chosen, 
but it doesn't make any sense at all.

Also make the method const, private, and fit in 80 cols while we're at it.

llvm-svn: 60215
 2008-11-28 21:42:09 +00:00
Chris Lattner
b9ef82dada comment and indentation improvements. 
llvm-svn: 60214
 2008-11-28 21:36:43 +00:00
Chris Lattner
d7ea2954a7 simplify some code, remove escaped newline. 
llvm-svn: 60213
 2008-11-28 21:29:52 +00:00
Chris Lattner
ad6c575105 remove mysterious escaped newlines. 
llvm-svn: 60211
 2008-11-28 21:16:44 +00:00
Chris Lattner
a854ab3760 don't call MergeBasicBlockIntoOnlyPred on a block whose only 
predecessor is itself.  This doesn't make sense, and this is
a dead infinite loop anyway.

llvm-svn: 60210
 2008-11-28 19:54:49 +00:00
Duncan Sands
850748f5de Add include files needed when building with 
gcc 4.4 (due to use of sprintf).

llvm-svn: 60209
 2008-11-28 10:20:03 +00:00
Duncan Sands
7fd4ea5847 Fix build with gcc-4.4: it doesn't like PICStyle 
being both a namespace and a variable name.

llvm-svn: 60208
 2008-11-28 09:29:37 +00:00
Chris Lattner
1b70ed5140 rewrite RecursivelyDeleteTriviallyDeadInstructions to use a more efficient 
formulation that doesn't require set lookups or scanning a set.

llvm-svn: 60203
 2008-11-28 01:20:46 +00:00
Chris Lattner
b9af105cff remove some weirdness that came from the LSR code that has 
nothing to do with dead instruction elimination.  No tests in
dejagnu depend on this, so I don't know what it was needed for.

llvm-svn: 60202
 2008-11-28 00:58:15 +00:00
Chris Lattner
69e0a27f94 rewrite a big chunk of how DSE does recursive dead operand 
elimination to use more modern infrastructure.  Also do a bunch
of small cleanups.

llvm-svn: 60201
 2008-11-28 00:27:14 +00:00
Mikhail Glushenkov
ee55a49632 Scrap some boilerplate. 
llvm-svn: 60200
 2008-11-28 00:14:11 +00:00
Mikhail Glushenkov
cd57fbc9c4 Support multiple compilation graph definitions. Not terribly useful, but makes the code more generic. 
llvm-svn: 60199
 2008-11-28 00:13:47 +00:00
Mikhail Glushenkov
187b171022 Add 'hidden' and 'really_hidden' option properties. 
llvm-svn: 60198
 2008-11-28 00:13:25 +00:00
Mikhail Glushenkov
45f83604cd Documentation: clarify what is meant by 'multiple edges'. 
llvm-svn: 60197
 2008-11-28 00:12:09 +00:00
Chris Lattner
4486266c9d delete ErasePossiblyDeadInstructionTree, replacing uses of it with 
RecursivelyDeleteTriviallyDeadInstructions.

llvm-svn: 60196
 2008-11-27 23:25:44 +00:00
Chris Lattner
8231357a92 Simplify LoopStrengthReduce::DeleteTriviallyDeadInstructions by 
making it use RecursivelyDeleteTriviallyDeadInstructions to do
the heavy lifting.

llvm-svn: 60195
 2008-11-27 23:23:35 +00:00
Chris Lattner
53ebef9cbb enhance RecursivelyDeleteTriviallyDeadInstructions to make 
PHIs dead if they are single-value.

llvm-svn: 60194
 2008-11-27 23:18:11 +00:00
Chris Lattner
8b382de4e0 Enhance RecursivelyDeleteTriviallyDeadInstructions to optionally 
return a list of deleted instructions.

llvm-svn: 60193
 2008-11-27 23:14:34 +00:00
Chris Lattner
b2bd29b39b use continue to reduce indentation 
llvm-svn: 60192
 2008-11-27 23:00:20 +00:00
Chris Lattner
b374a0158a remove doConstantPropagation and dceInstruction, they are just 
wrappers around the interesting code and use an obscure iterator
abstraction that dates back many many years.

Move EraseDeadInstructions to Transforms/Utils and name it
RecursivelyDeleteTriviallyDeadInstructions.

llvm-svn: 60191
 2008-11-27 22:57:53 +00:00
Chris Lattner
740eb92968 simplify code. 
llvm-svn: 60190
 2008-11-27 22:56:14 +00:00
Chris Lattner
d3f7621acd simplify this logic. 
llvm-svn: 60189
 2008-11-27 22:46:09 +00:00
Nick Lewycky
f5d5d6026f Also update the README. 
llvm-svn: 60188
 2008-11-27 22:41:45 +00:00
Nick Lewycky
40db216722 Chris prefers icmp/select over udiv! 
llvm-svn: 60187
 2008-11-27 22:41:10 +00:00
Nick Lewycky
0064d6236e Add a synthetic missed optimization. 
llvm-svn: 60186
 2008-11-27 22:12:22 +00:00
Nick Lewycky
882443585d Add a couple of missed optimizations on integer vectors. Multiply and divide 
by 1, as well as multiply by -1.

llvm-svn: 60182
 2008-11-27 20:21:08 +00:00
Chris Lattner
8c052366b3 defensive patch: if CGP is merging a block with the entry block, make sure 
it ends up being the entry block.

llvm-svn: 60180
 2008-11-27 19:29:14 +00:00
Chris Lattner
73b251b3bf Fix PR3138: if we merge the entry block into another block, make sure to 
move the other block back up into the entry position!

llvm-svn: 60179
 2008-11-27 19:25:19 +00:00
Nick Lewycky
847a671436 Silence a warning. 
Despite changing the order of evaluation, this doesn't actually change the
meaning of the statement.

llvm-svn: 60177
 2008-11-27 17:29:52 +00:00
Nuno Lopes
1e97b6c181 fix build on some machines. thanks buildbot 
llvm-svn: 60175
 2008-11-27 16:42:44 +00:00
Nuno Lopes
e3f6758e3c fix my previous commit r60064: compare strings instead of pointers 
llvm-svn: 60174
 2008-11-27 16:37:02 +00:00
Chris Lattner
2959f6224e switch InstCombine::visitLoadInst to use 
FindAvailableLoadedValue

llvm-svn: 60169
 2008-11-27 08:56:30 +00:00
Chris Lattner
dd755c74d6 improve const correctness. 
llvm-svn: 60168
 2008-11-27 08:39:18 +00:00
Chris Lattner
0bd942ecb5 enhance FindAvailableLoadedValue to make use of AliasAnalysis 
if it has it.

llvm-svn: 60167
 2008-11-27 08:18:12 +00:00
Chris Lattner
577096bcaa move FindAvailableLoadedValue from JumpThreading to Transforms/Utils. 
llvm-svn: 60166
 2008-11-27 08:10:05 +00:00
Bill Wendling
cbebccf936 Get rid of bogus "control may reach end of non-void function ‘...’ being 
inlined" message.

llvm-svn: 60165
 2008-11-27 08:00:12 +00:00
Chris Lattner
cab07ddaeb simplify this code a bit. 
llvm-svn: 60164
 2008-11-27 07:54:38 +00:00
Chris Lattner
e1ed3a2962 Use the new MergeBasicBlockIntoOnlyPred function. 
llvm-svn: 60163
 2008-11-27 07:54:12 +00:00
Chris Lattner
bb86dff3fe move MergeBasicBlockIntoOnlyPred to Transforms/Utils. 
llvm-svn: 60162
 2008-11-27 07:43:12 +00:00
Bill Wendling
7742719284 XFAil test due to reverting of patch. 
llvm-svn: 60161
 2008-11-27 07:34:10 +00:00
Chris Lattner
98f62336b7 rename ThreadBlock to ProcessBlock, since it does other things than 
just simple threading.

llvm-svn: 60157
 2008-11-27 07:20:04 +00:00
Bill Wendling
4a6eedb51d Comment out code that isn't entirely correct. 
llvm-svn: 60156
 2008-11-27 07:18:35 +00:00