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03cbda804e
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5580 Commits

Author SHA1 Message Date
Owen Anderson
03cbda804e Cache non-local memory dependence analysis. This is a significant compile 
time performance win in most cases.

llvm-svn: 41126
 2007-08-16 21:27:05 +00:00
Chris Lattner
4c6c787315 This adds a bunch of static functions that implement unsigned 
two's complement bignum arithmetic.  They could be used to
implement much of APInt, but the idea is they are enough to
implement APFloat as well, which the current APInt interface
is not suited for.

Patch by Neil Booth!

llvm-svn: 41124
 2007-08-16 15:56:55 +00:00
Evan Cheng
e2bb505d7c Comments. 
llvm-svn: 41119
 2007-08-16 07:25:37 +00:00
Owen Anderson
06cbd29787 Forgot a line. 
llvm-svn: 41115
 2007-08-16 00:25:42 +00:00
Owen Anderson
868a1a5ed6 Add a copy constructor and an assignment operator to DenseMap. 
llvm-svn: 41114
 2007-08-16 00:18:32 +00:00
Anton Korobeynikov
958dcad32d Properly use const qualifiers 
llvm-svn: 41111
 2007-08-15 21:12:30 +00:00
Devang Patel
35c1c452b0 No need to use iterator to erase basic block. 
llvm-svn: 41074
 2007-08-14 16:53:24 +00:00
Evan Cheng
215f802b75 Re-implement trivial rematerialization. This allows def MIs whose live intervals that are coalesced to be rematerialized. 
llvm-svn: 41060
 2007-08-13 23:45:17 +00:00
Devang Patel
993388b1ee Add methods to erase basic block entry. 
llvm-svn: 41052
 2007-08-13 22:10:29 +00:00
Reid Spencer
8c5c7c8453 Change casts from old style to new style. This helps document the details 
better, gives the compiler a chance to validate the cast and reduces warnings
if the user turns on -Wold-style-cast option.

llvm-svn: 41033
 2007-08-12 08:12:35 +00:00
Evan Cheng
8968affb6d Code to maintain kill information during register coalescing. 
llvm-svn: 41016
 2007-08-11 00:59:19 +00:00
Christopher Lamb
e0c9bd8d2e Move isSubRegOf into MRegisterInfo. Fix a missed move elimination in LowerSubregs and add more debugging output there. 
llvm-svn: 41005
 2007-08-10 21:11:55 +00:00
Devang Patel
fa7277dd34 Do not overuse std::string. Pass around char * directly. 
llvm-svn: 41001
 2007-08-10 18:29:32 +00:00
Devang Patel
d412a2a0ed Add utility to clone loops. 
llvm-svn: 40997
 2007-08-10 17:59:47 +00:00
Devang Patel
80f51489aa Add #ifndef guard. 
llvm-svn: 40991
 2007-08-10 15:58:23 +00:00
Chris Lattner
15b13dc5f9 add #ifndef guards 
llvm-svn: 40990
 2007-08-10 15:53:08 +00:00
Chris Lattner
de900e3b6c add Value::getNameStart/getNameLen() accessors. 
llvm-svn: 40989
 2007-08-10 15:34:35 +00:00
Rafael Espindola
b20b9e985a propagate struct size and alignment of byval arguments to the DAG 
llvm-svn: 40986
 2007-08-10 14:44:42 +00:00
Chris Lattner
f570f023cf memcpy with zero length is hugely expensive, so avoid it. This speeds up coallescing from 1.17s to 0.88s on siod. 
llvm-svn: 40984
 2007-08-10 07:02:50 +00:00
Chris Lattner
8995eae095 small speedup in the case where a smallvector is default ctor'd from 
an empty vector.  This speeds up llc slightly.

llvm-svn: 40983
 2007-08-10 06:54:38 +00:00
Bill Wendling
55c3dc2409 Adding SSSE3 intrinsics. 
llvm-svn: 40982
 2007-08-10 06:22:27 +00:00
Chris Lattner
bbe3b1dbee avoid copying strings. 
llvm-svn: 40980
 2007-08-10 06:17:04 +00:00
Dale Johannesen
a1340d5916 Update per review comments. 
llvm-svn: 40965
 2007-08-09 17:27:48 +00:00
Owen Anderson
3eba1e8f5c Make NonLocal and None const in the right way. :-) 
llvm-svn: 40961
 2007-08-09 04:42:44 +00:00
Dale Johannesen
79551baaad long double 9 of N. This finishes up the X86-32 bits 
(constants are still not handled).  Adds ConvertActions
to control fp-to-fp conversions (these are currently
defaulted for all other targets, so no changes there).

llvm-svn: 40958
 2007-08-09 01:04:01 +00:00
Owen Anderson
24f6b332cb Add one more comment. 
llvm-svn: 40949
 2007-08-08 21:54:33 +00:00
Owen Anderson
f4aec9115f Cleanup and comment-ize the memdep header. 
llvm-svn: 40948
 2007-08-08 21:53:20 +00:00
Owen Anderson
f988c3ee5c Change the None and NonLocal markers in memdep to be const. 
llvm-svn: 40946
 2007-08-08 21:39:39 +00:00
Reid Spencer
6f88014eeb Make it clear that getSTDIN returns null when stdin is empty. 
llvm-svn: 40940
 2007-08-08 20:02:20 +00:00
Evan Cheng
5227e36428 Adding kill info to val#. 
llvm-svn: 40925
 2007-08-08 07:03:29 +00:00
Evan Cheng
02e7fbd7c8 Clean up and bug fix. 
llvm-svn: 40921
 2007-08-08 05:56:18 +00:00
Chris Lattner
65d638a918 reimplement dfs number computation to be significantly faster. This speeds up 
natural loop canonicalization (which does many cfg xforms) by 4.3x, for 
example.  This also fixes a bug in postdom dfnumber computation.

llvm-svn: 40920
 2007-08-08 05:51:24 +00:00
Evan Cheng
12d72cc1a0 - Each val# can have multiple kills. 
- Fix some minor bugs related to special markers on val# def. ~0U means
  undefined, ~1U means dead val#.

llvm-svn: 40916
 2007-08-08 03:00:28 +00:00
Evan Cheng
0182b495fd - LiveInterval value#'s now have 3 components: def instruction #, 
kill instruction #, and source register number (iff the value# is defined by a
copy).
- Now def instruction # is set for every value#, not just for copy defined ones.
- Update some outdated code related inactive live ranges.
- Kill info not yet set. That's next patch.

llvm-svn: 40913
 2007-08-07 23:49:57 +00:00
Devang Patel
8289b6e663 Fix comment. 
llvm-svn: 40911
 2007-08-07 23:16:03 +00:00
Owen Anderson
d0c7aad800 Get rid of unnecessary #include. 
llvm-svn: 40885
 2007-08-07 00:38:16 +00:00
Owen Anderson
22d94da65b Clean up a bunch of caching stuff in memdep. This reduces the time to run GVN 
on 403.gcc from ~15s to ~10s.

llvm-svn: 40884
 2007-08-07 00:33:45 +00:00
Devang Patel
228dc09ff6 Begin loop index split pass. 
llvm-svn: 40883
 2007-08-07 00:25:56 +00:00
Chris Lattner
fb1e3a7d2c remove #if 0 code. 
llvm-svn: 40880
 2007-08-06 22:03:19 +00:00
Chris Lattner
cce6cf78e4 remove #if 0 code. 
llvm-svn: 40879
 2007-08-06 22:01:53 +00:00
Chandler Carruth
e717210757 This fixes resizing issues with BitVectors. It ensures that the BitWord type and type size is always used, and ensures completely correct clearing of unused high bits, and setting of bits when resizing. It should resolve PR1563. 
llvm-svn: 40871
 2007-08-06 20:52:17 +00:00
Reid Spencer
5b204d32f8 @verbatim needs to be on a line by itself. 
llvm-svn: 40865
 2007-08-06 17:10:29 +00:00
Christopher Lamb
8875f43912 Implement review feedback. No functionality change. 
llvm-svn: 40863
 2007-08-06 16:33:56 +00:00
Chris Lattner
99df553268 Various random cleanups, add two accessors to DomTreeNode: getDFSNumIn/getDFSNumOut 
llvm-svn: 40856
 2007-08-06 06:15:43 +00:00
Reid Spencer
3e54e72ef1 Fix minor doxygen nits. 
llvm-svn: 40854
 2007-08-05 20:06:04 +00:00
Reid Spencer
2a23af68c8 Document a missing parameter. 
llvm-svn: 40852
 2007-08-05 19:36:39 +00:00
Chris Lattner
ab61b6f01e Fix a bug in DenseMap::clear, where we never reset a tombstone 
to EmptyKey.

llvm-svn: 40839
 2007-08-05 08:43:36 +00:00
Chris Lattner
10db9656ba When clearing a SmallPtrSet, if the set had a huge capacity, but the 
contents of the set were small, deallocate and shrink the set.  This
avoids having us to memset as much data, significantly speeding up
some pathological cases.  For example, this speeds up the verifier
from 0.3899s to 0.0763 (5.1x) on the testcase from PR1432 in a 
release build.

llvm-svn: 40837
 2007-08-05 07:32:14 +00:00
Chris Lattner
a5a692b9bb Switch the internal "Info" map from an std::map to a DenseMap. This 
speeds up idom by about 45% and postidom by about 33%.

Some extra precautions must be taken not to invalidate densemap iterators.

llvm-svn: 40827
 2007-08-05 00:02:00 +00:00
Chris Lattner
5912537997 switch the DomTreeNodes and IDoms maps in idom/postidom to a 
DenseMap instead of an std::map.  This speeds up postdomtree
by about 25% and domtree by about 23%.  It also speeds up clients,
for example, domfrontier by 11%, mem2reg by 4% and ADCE by 6%.

llvm-svn: 40826
 2007-08-04 23:48:07 +00:00