804209d17c
the size of a smallvector shouldn't be part of the interface to these methods.
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llvm-svn: 48662
2008-03-21 22:01:16 +00:00
beb216da0a
make gvn marginally faster by reallocating the lastSeenLoad map for
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each basic block.
llvm-svn: 48660
2008-03-21 21:33:23 +00:00
2876a645c3
Minor cleanups and shrinkification.
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llvm-svn: 48658
2008-03-21 21:14:38 +00:00
a25dde6fee
Handle getresult instructions in different basic blocks
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from their aggregate operands by moving the getresult
instructions.
llvm-svn: 48657
2008-03-21 21:01:32 +00:00
74d154ce57
FunctionExtractorPass has been superceded by GVExtractorPass
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llvm-svn: 48648
2008-03-21 16:46:53 +00:00
c9e09a0588
Fix the build for gcc-4.2.
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llvm-svn: 48639
2008-03-21 08:32:17 +00:00
c44160ce6e
Teach masked value is zero about add and sub, and use MVIZ to
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simplify things like (X & 4) >> 1 == 2 --> (X & 4) == 4.
since it is obvious that the shift doesn't remove any bits.
llvm-svn: 48631
2008-03-21 05:19:58 +00:00
5ca2ea6479
Incorporate feedback.
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- Fix loop nest.
- Use RetVals.size()
- Check for null return value.
llvm-svn: 48605
2008-03-20 18:30:32 +00:00
b81777a354
C and Objective Caml bindings for mem2reg and reg2mem.
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Patch by Erick Tryzelaar.
llvm-svn: 48602
2008-03-20 17:16:03 +00:00
a30cdb9417
Take the old function's name.
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llvm-svn: 48588
2008-03-20 08:05:05 +00:00
5daf090a1a
80 col violation.
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llvm-svn: 48573
2008-03-20 00:20:23 +00:00
b727960f78
Add comment.
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llvm-svn: 48567
2008-03-19 23:05:52 +00:00
a90fdc4340
Remove dead options.
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llvm-svn: 48556
2008-03-19 22:02:26 +00:00
924ca7f01d
Update heuritics that estimates cost of call instructions.
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llvm-svn: 48474
2008-03-17 23:41:20 +00:00
82a0e74f43
C and Objective Caml bindings for several scalar transforms.
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Patch originally by Erick Tryzelaar, but has been modified somewhat.
llvm-svn: 48419
2008-03-16 16:32:40 +00:00
68a930b33e
The inst combining of inttoptr into GEP with one index was using the bit size of
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the type instead of the byte size. This was causing troublesome mis-compilations.
True to form, this took 2 days to find and is a one-line fix. :-P
llvm-svn: 48354
2008-03-14 05:12:19 +00:00
7a69e3aef3
Fix a bug in GVN that Duncan noticed, where we potentially need to insert a
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pointer bitcast when performing return slot optimization.
llvm-svn: 48343
2008-03-13 22:07:10 +00:00
7698bfbe16
Update -mem2reg to use succ_iterator instead of iterating across TerminatorInst
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successors. This makes it support nounwind.
llvm-svn: 48320
2008-03-13 02:42:41 +00:00
8a923e7c28
Reimplement the parameter attributes support, phase #1 . hilights:
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1. There is now a "PAListPtr" class, which is a smart pointer around
the underlying uniqued parameter attribute list object, and manages
its refcount. It is now impossible to mess up the refcount.
2. PAListPtr is now the main interface to the underlying object, and
the underlying object is now completely opaque.
3. Implementation details like SmallVector and FoldingSet are now no
longer part of the interface.
4. You can create a PAListPtr with an arbitrary sequence of
ParamAttrsWithIndex's, no need to make a SmallVector of a specific
size (you can just use an array or scalar or vector if you wish).
5. All the client code that had to check for a null pointer before
dereferencing the pointer is simplified to just access the
PAListPtr directly.
6. The interfaces for adding attrs to a list and removing them is a
bit simpler.
Phase #2 will rename some stuff (e.g. PAListPtr) and do other less
invasive changes.
llvm-svn: 48289
2008-03-12 17:45:29 +00:00
6ff0b822b4
Improve the return slot optimization to be both more aggressive (not limited to sret parameters), and
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safer (when the passed pointer might be invalid). Thanks to Duncan and Chris for the idea behind this,
and extra thanks to Duncan for helping me work out the trap-safety.
llvm-svn: 48280
2008-03-12 07:37:44 +00:00
cc189b5606
Check multiple return values.
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llvm-svn: 48267
2008-03-12 00:32:32 +00:00
fa8667a2dd
Fix attribute handling.
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llvm-svn: 48262
2008-03-12 00:07:03 +00:00
7358165c99
Handle multiple ret values.
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llvm-svn: 48254
2008-03-11 22:24:29 +00:00
f6269f0914
Initialize.
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llvm-svn: 48253
2008-03-11 22:08:21 +00:00
20af5a0fe7
Check to see if a two-entry PHI block can be simplified
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before trying to merge the block into its predecessors.
This allows two-entry-phi-return.ll to be simplified
into a single basic block.
llvm-svn: 48252
2008-03-11 21:53:06 +00:00
70c238a1d8
Skip functions that return multiple values.
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llvm-svn: 48233
2008-03-11 18:04:06 +00:00
5663fe6613
Become multiple return value aware.
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Right now, the pass does not optimize tail recursions
involving multiple return values.
llvm-svn: 48228
2008-03-11 17:33:32 +00:00
e418de3023
Add TODO reminder.
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llvm-svn: 48227
2008-03-11 17:32:05 +00:00
a7a2075ab8
Initial multiple return values support.
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llvm-svn: 48210
2008-03-11 05:46:42 +00:00
64d0f07085
Restore optimization that merges blocks when inline function
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has single return value.
llvm-svn: 48162
2008-03-10 18:34:00 +00:00
72ea2dc9a9
Simplify
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llvm-svn: 48161
2008-03-10 18:22:16 +00:00
c0325b2040
simplify
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llvm-svn: 48160
2008-03-10 18:11:41 +00:00
fb2c1a999a
Turn unwind_to into "unwinds to".
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llvm-svn: 48123
2008-03-10 02:20:00 +00:00
d48ed17d18
Fix some compilation errors on msvc:
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- "Redefinition of I" (iterator masks previous definition)
- include missing header file
Patch by Argiris Kirtzidis!
llvm-svn: 48115
2008-03-09 18:32:50 +00:00
0ac65c3b99
And again.
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llvm-svn: 48112
2008-03-09 17:13:05 +00:00
929703b29e
Braces belong here. No functionality change.
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llvm-svn: 48111
2008-03-09 17:11:18 +00:00
83750d9caf
SCCP also needs to be taught to follow unwind_to
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llvm-svn: 48109
2008-03-09 09:44:38 +00:00
271506f29c
Don't eliminate blocks that are only reachable by unwind_to.
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llvm-svn: 48106
2008-03-09 08:50:23 +00:00
42445be0df
Firstly, having a BranchInst isn't exclusive with having an unwind_to.
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Secondly, we have to check whether the branch is actually pointing to the block
with the unwind in it. We could have gotten here because of the unwind_to alone.
llvm-svn: 48099
2008-03-09 07:50:37 +00:00
f3d637fa14
A BB that unwind_to an "unwind" inst is that same as one that doesn't unwind_to
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at all.
llvm-svn: 48096
2008-03-09 07:36:38 +00:00
11fc6f8765
Update the block cloner which fixes bugpoint on code using unwind_to (phew!)
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and also update the cloning interface's major user, the loop optimizations.
llvm-svn: 48088
2008-03-09 05:24:34 +00:00
5ce9b521d7
Update the inliner and simplifycfg to handle unwind_to.
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llvm-svn: 48086
2008-03-09 05:10:13 +00:00
cc24104703
Two things. Preserve the unwind_to when splitting a BB.
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Add the ability to remove just one instance of a BB from a phi node. This fixes
the compile error in the tree now.
llvm-svn: 48085
2008-03-09 05:04:48 +00:00
4d0ed842b1
Prune the unwind_to labels on BBs that don't need them. Another step in the
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removal of invoke, PR1269.
llvm-svn: 48084
2008-03-09 04:55:16 +00:00
35e92c7bea
Not all users of a BB are Instructions any more.
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llvm-svn: 48047
2008-03-08 07:48:41 +00:00
780b3ca64b
Update inliner to handle functions that return multiple values.
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llvm-svn: 48020
2008-03-07 20:06:16 +00:00
3f13b6630a
add a pass that can extract all kinds of global values, not just functions. Update llvm-extract to use it and optionally extract a global variable if you want it too
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llvm-svn: 48015
2008-03-07 19:51:57 +00:00
ad19df0687
fix typos
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llvm-svn: 47994
2008-03-06 10:36:00 +00:00
d0b62a1552
Don't try to simplify urem and srem using arithmetic rules that don't work
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under modulo (overflow). Fixes PR1933.
llvm-svn: 47987
2008-03-06 06:48:30 +00:00
26cabc447c
Skip, for now, callsites where use of sret argument is not dominated by callsite.
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llvm-svn: 47980
2008-03-05 23:39:23 +00:00
Chris Lattner