e1822ef660
apparently GCC doesn't believe that I understand C
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precedence rules. Pacify it.
llvm-svn: 60237
2008-11-29 08:36:39 +00:00
4f96a92145
Typo fix.
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llvm-svn: 60236
2008-11-29 08:03:35 +00:00
3be4b122d3
Implement the GNU __null extension
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llvm-svn: 60235
2008-11-29 04:51:27 +00:00
51ba8d0630
Split getDependency into getDependency and getDependencyFrom, the
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former does caching, the later doesn't. This dramatically simplifies
the logic in getDependency and getDependencyFrom.
llvm-svn: 60234
2008-11-29 03:47:00 +00:00
469e3aa696
Temporarily revert r60195. It's causing an optimized bootstrap of llvm-gcc to fail.
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llvm-svn: 60233
2008-11-29 03:43:04 +00:00
e4d32791ef
Now that DepType is private, we can start cleaning up some of its uses:
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Document the Dirty value more precisely, use it for the uninitialized
DepResultTy value. Change reverse mappings to be from an instruction*
instead of DepResultTy, and stop tracking other forms. This makes it more
clear that we only care about the instruction cases.
Eliminate a DepResultTy,bool pair by using Dirty in the local case as well,
shrinking the map and simplifying the code.
This speeds up GVN by ~3% on 403.gcc.
llvm-svn: 60232
2008-11-29 03:22:12 +00:00
7f9c8a0f05
Introduce and use a new MemDepResult class to hold the results of a memdep
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query. This makes it crystal clear what cases can escape from MemDep that
the clients have to handle. This also gives the clients a nice simplified
interface to it that is easy to poke at.
This patch also makes DepResultTy and MemoryDependenceAnalysis::DepType
private, yay.
llvm-svn: 60231
2008-11-29 02:29:27 +00:00
de04e1173a
Reimplement the internal abstraction used by MemDep in terms
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of a pointer/int pair instead of a manually bitmangled pointer.
This forces clients to think a little more about checking the
appropriate pieces and will be useful for internal
implementation improvements later.
I'm not particularly happy with this. After going through this
I don't think that the clients of memdep should be exposed to
the internal type at all. I'll fix this in a subsequent commit.
This has no functionality change.
llvm-svn: 60230
2008-11-29 01:43:36 +00:00
482713e14a
Fix sentinels to use correctly 'aligned' pointers.
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llvm-svn: 60229
2008-11-29 01:36:16 +00:00
2774a41b96
Fix spello, add DenseMapInfo specialization for PointerIntPair.
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llvm-svn: 60228
2008-11-29 01:18:05 +00:00
06db5255c3
fix comment typo
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llvm-svn: 60227
2008-11-28 23:57:26 +00:00
9d72ff710e
Switch QualType to use llvm::PointerIntPair internally to do the pointer
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bitmangling.
llvm-svn: 60226
2008-11-28 23:37:31 +00:00
845d731670
fix a bug.
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llvm-svn: 60225
2008-11-28 23:36:15 +00:00
7602e4bdbf
add a generic "bitmangled pointer" class, which allows a parameterized
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pointer and integer type to be used.
llvm-svn: 60224
2008-11-28 23:31:44 +00:00
d3d9111ede
Fix PR3141 by ensuring that MemoryDependenceAnalysis::removeInstruction
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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
f3f6a801cc
don't revisit instructions off the beginning of the block.
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llvm-svn: 60221
2008-11-28 22:50:08 +00:00
08f3c00562
comment cleanups.
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llvm-svn: 60220
2008-11-28 22:41:36 +00:00
73c254593e
more cleanups for MemoryDependenceAnalysis::removeInstruction,
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no functionality change.
llvm-svn: 60219
2008-11-28 22:28:27 +00:00
a25d3952c6
random cleanups, no functionality change.
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llvm-svn: 60218
2008-11-28 22:04:47 +00:00
2916a4b589
forward declare CallSite instead of #includ'ing it.
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llvm-svn: 60217
2008-11-28 21:47:19 +00:00
554d1221aa
Run verifyRemoved from removeInstruction when -debug is specified.
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This shows the root problem behind PR3141.
llvm-svn: 60216
2008-11-28 21:45:17 +00:00
e5fd5c29de
rename "ping" to "verifyRemoved". I don't know why 'ping' what chosen,
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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
cfa414fe9e
comment and indentation improvements.
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llvm-svn: 60214
2008-11-28 21:36:43 +00:00
f2a8ba4cf0
simplify some code, remove escaped newline.
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llvm-svn: 60213
2008-11-28 21:29:52 +00:00
dca2cd3562
remove mysterious escaped newlines.
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llvm-svn: 60211
2008-11-28 21:16:44 +00:00
8a172daa55
don't call MergeBasicBlockIntoOnlyPred on a block whose only
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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
71ecd67b5d
Add include files needed when building with
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gcc 4.4 (due to use of sprintf).
llvm-svn: 60209
2008-11-28 10:20:03 +00:00
595a4423dc
Fix build with gcc-4.4: it doesn't like PICStyle
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being both a namespace and a variable name.
llvm-svn: 60208
2008-11-28 09:29:37 +00:00
e31a8ebfdc
Fix a serious bug.
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When initialized, the index of the ElementRegion was unsigned. But the index
value of the ArraySubscriptExpr is signed. This inconsistency caused the value
of the array element retrieved to be UnknownVal despite it was initialized to
symbolic.
This is only a hack. Real fix of this problem is required.
llvm-svn: 60207
2008-11-28 08:41:39 +00:00
33178a0993
Code cleanup. No functional change.
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llvm-svn: 60206
2008-11-28 08:34:30 +00:00
85b6e201f4
Use std::make_pair instead of std::pair's ctor.
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llvm-svn: 60205
2008-11-28 03:55:52 +00:00
3698bdb417
Enable the GRStateManager to do something when we finish a path. For example,
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the ConstraintManager can print its internal state before its solver instance is
destroyed.
llvm-svn: 60204
2008-11-28 03:07:05 +00:00
e9f6c355bf
rewrite RecursivelyDeleteTriviallyDeadInstructions to use a more efficient
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formulation that doesn't require set lookups or scanning a set.
llvm-svn: 60203
2008-11-28 01:20:46 +00:00
d4b5ba615e
remove some weirdness that came from the LSR code that has
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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
1adb6759ef
rewrite a big chunk of how DSE does recursive dead operand
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elimination to use more modern infrastructure. Also do a bunch
of small cleanups.
llvm-svn: 60201
2008-11-28 00:27:14 +00:00
7283d44569
Scrap some boilerplate.
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llvm-svn: 60200
2008-11-28 00:14:11 +00:00
cc2d0b2c4c
Support multiple compilation graph definitions. Not terribly useful, but makes the code more generic.
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llvm-svn: 60199
2008-11-28 00:13:47 +00:00
3bb3da6f4c
Add 'hidden' and 'really_hidden' option properties.
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llvm-svn: 60198
2008-11-28 00:13:25 +00:00
4ad34cbdc0
Documentation: clarify what is meant by 'multiple edges'.
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llvm-svn: 60197
2008-11-28 00:12:09 +00:00
8e84c129ce
delete ErasePossiblyDeadInstructionTree, replacing uses of it with
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RecursivelyDeleteTriviallyDeadInstructions.
llvm-svn: 60196
2008-11-27 23:25:44 +00:00
c077a2a535
Simplify LoopStrengthReduce::DeleteTriviallyDeadInstructions by
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making it use RecursivelyDeleteTriviallyDeadInstructions to do
the heavy lifting.
llvm-svn: 60195
2008-11-27 23:23:35 +00:00
a1bbdff933
enhance RecursivelyDeleteTriviallyDeadInstructions to make
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PHIs dead if they are single-value.
llvm-svn: 60194
2008-11-27 23:18:11 +00:00
1cb4f72706
Enhance RecursivelyDeleteTriviallyDeadInstructions to optionally
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return a list of deleted instructions.
llvm-svn: 60193
2008-11-27 23:14:34 +00:00
96e2dbe008
use continue to reduce indentation
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llvm-svn: 60192
2008-11-27 23:00:20 +00:00
c6c481cdfc
remove doConstantPropagation and dceInstruction, they are just
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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
5ef9ebf787
simplify code.
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llvm-svn: 60190
2008-11-27 22:56:14 +00:00
c92fa42ddd
simplify this logic.
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llvm-svn: 60189
2008-11-27 22:46:09 +00:00
edd5d3e4e9
Also update the README.
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llvm-svn: 60188
2008-11-27 22:41:45 +00:00
4ab50b93c8
Chris prefers icmp/select over udiv!
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llvm-svn: 60187
2008-11-27 22:41:10 +00:00
b3dc4ad5b4
Add a synthetic missed optimization.
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llvm-svn: 60186
2008-11-27 22:12:22 +00:00
Chris Lattner