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Author SHA1 Message Date
Chris Lattner
e0f69b32e5 Fix a fixme: allow memdep to see past read-only calls when doing 
load dependence queries.  This allows GVN to eliminate a few more
instructions on 403.gcc:

 152598 gvn    - Number of instructions deleted
  49240 gvn    - Number of loads deleted
after:
 153986 gvn    - Number of instructions deleted
  50069 gvn    - Number of loads deleted

llvm-svn: 60786
 2008-12-09 19:47:40 +00:00
Chris Lattner
0dbe02a270 rename getNonLocalDependency -> getNonLocalCallDependency, and remove 
pointer stuff from it, simplifying the code a bit.

llvm-svn: 60783
 2008-12-09 19:38:05 +00:00
Chris Lattner
3768aeb290 Switch GVN::processNonLocalLoad to using the new 
MemDep::getNonLocalPointerDependency method.  There are
some open issues with this (missed optimizations) and
plenty of future work, but this does allow GVN to eliminate
*slightly* more loads (49246 vs 49033).

Switching over now allows simplification of the other code
path in memdep.

llvm-svn: 60780
 2008-12-09 19:25:07 +00:00
Chris Lattner
b0aa96c25d random cleanups, no functionality change. 
llvm-svn: 60779
 2008-12-09 19:21:47 +00:00
Evan Cheng
35f9ef25f1 xfail this for now. 
llvm-svn: 60777
 2008-12-09 18:43:00 +00:00
Evan Cheng
b81948d88b Back out 60748 for now. It's breaking SPASS, 254.gap, and 464.h264ref. 
llvm-svn: 60776
 2008-12-09 18:21:49 +00:00
Evan Cheng
92299e0722 Cosmetic changes. 
llvm-svn: 60771
 2008-12-09 17:56:30 +00:00
Nuno Lopes
360aae23b1 remove unused var 
llvm-svn: 60770
 2008-12-09 17:04:06 +00:00
Dan Gohman
275e6da839 Whitespace cleanups. 
llvm-svn: 60769
 2008-12-09 16:37:48 +00:00
Mikhail Glushenkov
25ca49afd4 Remove Clang tests since clang is not installed on the buildbots. 
llvm-svn: 60767
 2008-12-09 15:11:45 +00:00
Mikhail Glushenkov
b1adbf1413 Add some rudimentary tests for . 
llvm-svn: 60766
 2008-12-09 14:41:27 +00:00
Mikhail Glushenkov
18f6dc1f16 Man page typo fix. 
llvm-svn: 60765
 2008-12-09 14:41:00 +00:00
Mikhail Glushenkov
6f236eebcf Support -emit-llvm properly (with -S and -c). 
llvm-svn: 60764
 2008-12-09 14:40:18 +00:00
Duncan Sands
392ed50974 Handle a compiler warning. 
llvm-svn: 60755
 2008-12-09 09:58:11 +00:00
Chris Lattner
ff8be5564e fix typos gabor noticed 
llvm-svn: 60754
 2008-12-09 08:38:36 +00:00
Bill Wendling
d034543c7e Correct my English. 
llvm-svn: 60753
 2008-12-09 07:55:31 +00:00
Chris Lattner
b7b4a2dbac restructure the top level non-local ptr dep query to handle 
the first block of a query specially.  This makes the "complete query
caching" subsystem more effective, avoiding predecessor queries.  This
speeds up GVN another 4%.

llvm-svn: 60752
 2008-12-09 07:52:59 +00:00
Chris Lattner
f61cc24ef3 rename getNonLocalPointerDepInternal -> getNonLocalPointerDepFromBB 
and split its inner loop out into a new GetNonLocalInfoForBlock
function.  No functionality change.

llvm-svn: 60751
 2008-12-09 07:47:11 +00:00
Evan Cheng
3130873f30 DisableGVCompilation should not abort on internal GlobalValue's. 
llvm-svn: 60750
 2008-12-09 07:31:49 +00:00
Mon P Wang
85d72dabc5 In LegalizeOp, don't change the result type of CONVERT_RNDSAT when promoting 
one of its operand.

llvm-svn: 60749
 2008-12-09 07:27:39 +00:00
Nick Lewycky
41060b1556 It's easy to handle SLE/SGE when the loop has a unit stride. 
llvm-svn: 60748
 2008-12-09 07:25:04 +00:00
Chris Lattner
7358482dbc if we have two elements, insert both, don't use std::sort. 
This speeds up the new GVN by another 3%

llvm-svn: 60747
 2008-12-09 07:05:45 +00:00
Chris Lattner
e428927eda If we're only adding one new element to 'Cache', insert it into its known 
position instead of using a full sort. This speeds up GVN by ~4% with the
new memdep stuff.

llvm-svn: 60746
 2008-12-09 06:58:04 +00:00
Chris Lattner
951d1310c9 convert a couple other places that use pred_iterator to use the caching 
pred iterator.

llvm-svn: 60745
 2008-12-09 06:44:17 +00:00
Chris Lattner
6eb2690ea4 newline at end of phile 
llvm-svn: 60744
 2008-12-09 06:32:32 +00:00
Chris Lattner
d7df2dce20 use hte new pred cache to speed up the new non-local memdep 
queries.  This speeds up GVN using the new queries (not yet
checked in) by just over 10%.

llvm-svn: 60743
 2008-12-09 06:28:49 +00:00
Chris Lattner
14f67ea7b5 pred_iterator got a lot slower since use-diet landed. This is a 
really simple cache class for these queries.  Hopefully this can
be removed if pred_iterator speeds back up.

llvm-svn: 60742
 2008-12-09 06:27:07 +00:00
Scott Michel
5c944059b4 CellSPU: 
- Fix call.ll and call_indirect.ll expected results, now that it's using a
  different pre-register allocation scheduler.

llvm-svn: 60741
 2008-12-09 06:12:03 +00:00
Mon P Wang
0c011f8ba9 Fix getNode to allow a vector for the shift amount for shifts of vectors. 
Fix the shift amount when unrolling a vector shift into scalar shifts.
Fix problem in getShuffleScalarElt where it assumes that the input of
a bit convert must be a vector.

llvm-svn: 60740
 2008-12-09 05:46:39 +00:00
Chris Lattner
e32dbaddd2 Fix a really subtle off-by-one bug that Duncan noticed with valgrind 
on test/CodeGen/Generic/2007-06-06-CriticalEdgeLandingPad.

llvm-svn: 60739
 2008-12-09 04:47:21 +00:00
Scott Michel
cf7ec43939 CellSPU: 
- Change default scheduling preference to list-burr, which produces somewhat
  better code than the default. Could also use list-tdrr, but need to ask
  dev list about the appropriate handy mnemonic before commiting.

llvm-svn: 60738
 2008-12-09 03:37:19 +00:00
Bill Wendling
7250a29def Add initial support for fast-isel of the [SU]ADDO intrinsics. It isn't 
complete. For instance, it lowers the common case into this less-than-optimal
code:

        addl    %ecx, %eax
        seto    %cl
        testb   %cl, %cl
        jne     LBB1_2  ## overflow

instead of:

        addl    %ecx, %eax
        jo      LBB1_2  ## overflow

That will come in a future commit.

llvm-svn: 60737
 2008-12-09 02:42:50 +00:00
Dan Gohman
0e700eb88b Fix the name of ISD::TokenFactor in a comment. Thanks Gabor! 
llvm-svn: 60736
 2008-12-09 02:18:52 +00:00
Chris Lattner
aa0be1e32a remove two unneeded forward declarations, pointed out by Gabor. 
llvm-svn: 60735
 2008-12-09 02:10:10 +00:00
Dan Gohman
e99b76aa24 Don't charge full latency for an anti-dependence, in this simplistic 
pipeline model.

llvm-svn: 60733
 2008-12-09 00:26:46 +00:00
Dan Gohman
9e5cc22129 Fix a couple of mistaken switch case fall-throughs. Thanks to Bill 
for spotting these!

llvm-svn: 60728
 2008-12-08 23:50:06 +00:00
Devang Patel
0ef5e583cd Actually test something. Use PR3170 test case. 
llvm-svn: 60727
 2008-12-08 23:44:46 +00:00
Chris Lattner
23e2ac8894 remove DebugIterations option. Despite the accusations, 
jump threading has been shown to only expose problems not
have bugs itself.  I'm sure it's completely bug free! ;-)

llvm-svn: 60725
 2008-12-08 22:44:07 +00:00
Evan Cheng
3bb2ad8a0a Re-apply 60689 now my head is screwed on right. 
llvm-svn: 60711
 2008-12-08 19:29:03 +00:00
Dan Gohman
6f3258586e Fix the top-level comments, and fix some 80-column violations. 
llvm-svn: 60707
 2008-12-08 17:50:35 +00:00
Dan Gohman
c0280e8867 Move the conversion to intptr_t to a separate statement. This 
avoids GCC's warning even on 64-bit hosts.

llvm-svn: 60706
 2008-12-08 17:41:24 +00:00
Dan Gohman
5bca97fc4f Revert 60689. It caused many regressions on Darwin targets. 
llvm-svn: 60705
 2008-12-08 17:38:02 +00:00
Ted Kremenek
164f7f4a43 Use 'delete []' instead of 'delete' in OwningArray::reset(). 
llvm-svn: 60703
 2008-12-08 17:28:11 +00:00
Devang Patel
a8d0117253 Fix spelling. 
Thanks Duncan!

llvm-svn: 60702
 2008-12-08 17:07:24 +00:00
Devang Patel
82fb6bc606 Undo previous patch. 
llvm-svn: 60701
 2008-12-08 17:02:37 +00:00
Duncan Sands
fd39a042aa Fix comment typo. 
llvm-svn: 60698
 2008-12-08 14:10:36 +00:00
Duncan Sands
982c6ed1d9 Fix comment typo. 
llvm-svn: 60697
 2008-12-08 14:01:59 +00:00
Dan Gohman
14d4094968 Factor out the code for sign-extending/truncating gep indices 
and use it in x86 address mode folding. Also, make
getRegForValue return 0 for illegal types even if it has a
ValueMap for them, because Argument values are put in the
ValueMap. This fixes PR3181.

llvm-svn: 60696
 2008-12-08 07:57:47 +00:00
Chris Lattner
7307ef0ba3 add another level of caching for non-local pointer queries, keeping 
track of whether the CachedNonLocalPointerInfo for a block is specific
to a block.  If so, just return it without any pred scanning.  This is
good for a 6% speedup on GVN (when it uses this lookup method, which
it doesn't right now).

llvm-svn: 60695
 2008-12-08 07:31:50 +00:00
Chris Lattner
9020891916 consistency 
llvm-svn: 60694
 2008-12-08 07:21:39 +00:00