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26287 Commits

Author SHA1 Message Date
Chris Lattner bc1a280eae add a prototype 
llvm-svn: 30051
 2006-09-02 05:37:53 +00:00
Chris Lattner 75742e532a Iteration is required for some cases, even if they don't occur in crafty. 
Restore it, which re-fixes X86/2006-08-21-ExtraMovInst.ll

llvm-svn: 30050
 2006-09-02 05:32:53 +00:00
Chris Lattner 5a56d30906 When joining two intervals where the RHS is really simple, use a light-weight 
method for joining the live ranges instead of the fully-general one.

llvm-svn: 30049
 2006-09-02 05:26:59 +00:00
Chris Lattner 7907ad8472 new method 
llvm-svn: 30048
 2006-09-02 05:26:01 +00:00
Evan Cheng 1f15185cbc Another "cyclic DAG" test case. 
llvm-svn: 30043
 2006-09-01 23:50:17 +00:00
Evan Cheng 2c4e0f120f Oops. Bad typo. Without the check of N1.hasOneUse() bad things can happen. 
Suppose the TokenFactor can reach the Op:

       [Load chain]
           ^
           |
         [Load]
         ^    ^
         |    |
        /      \-
       /         |
      /          [Op]
     /          ^ ^
     |        ..  |
     |       /    |
   [TokenFactor]  |
       ^          |
       |          |
        \        /
         \      /
         [Store]

If we move the Load below the TokenFactor, we would have created a cycle in
the DAG.

llvm-svn: 30040
 2006-09-01 22:52:28 +00:00
Chris Lattner bad9d2ee49 Use a couple of multiclass patterns to factor some integer ops. 
llvm-svn: 30039
 2006-09-01 22:28:02 +00:00
Chris Lattner 38e6d1d5af remove a bunch of comments 
llvm-svn: 30038
 2006-09-01 22:16:22 +00:00
Chris Lattner 70fd01a1b8 Make sure to clear CurDefmPrefix = 0, otherwise stuff after a defm won't 
parse right.  This fixes TableGen/MultiClass.td

llvm-svn: 30037
 2006-09-01 22:07:27 +00:00
Chris Lattner 315f02a6e5 Make this harder 
llvm-svn: 30036
 2006-09-01 22:07:00 +00:00
Chris Lattner 28368120a5 Fix a typo Jim pointed out, thanks! 
llvm-svn: 30035
 2006-09-01 22:01:36 +00:00
Chris Lattner c05fac8b83 fix an assertion with multidefs. Def inside of multiclasses don't need to 
be complete.

llvm-svn: 30034
 2006-09-01 21:59:03 +00:00
Bill Wendling d81797beca Fixed formatting problem. 
llvm-svn: 30033
 2006-09-01 21:47:10 +00:00
Chris Lattner b5b0c1ae65 document !strconcat 
llvm-svn: 30032
 2006-09-01 21:46:01 +00:00
Bill Wendling 00c5aecb74 Added documentation Fernando Magno Quintao Pereira wrote for the register 
allocator. (First draft)

llvm-svn: 30031
 2006-09-01 21:46:00 +00:00
Chris Lattner f01a85bdf2 Document multiclasses and defm's 
llvm-svn: 30030
 2006-09-01 21:44:18 +00:00
Chris Lattner aec1af2239 regenerate 
llvm-svn: 30029
 2006-09-01 21:14:42 +00:00
Chris Lattner 4b975e8eea simple multiclass example 
llvm-svn: 30028
 2006-09-01 21:14:37 +00:00
Chris Lattner 66b7235877 Add often-requested support for defining "multiclasses" which can be instantiated. 
This allows you to define multiple definitions with one line, encouraging
more .td file factoring.

llvm-svn: 30027
 2006-09-01 21:13:49 +00:00
Anton Korobeynikov 6c6a70f999 - Fixed broken Win32 build 
- Removed warning about clobbered parameter in Bytecode/Reader

llvm-svn: 30026
 2006-09-01 20:35:17 +00:00
Evan Cheng 88c268b621 Remove extra spaces. 
llvm-svn: 30025
 2006-09-01 18:45:22 +00:00
Evan Cheng 31c99969a9 Last check-in was a mistake... 
I've been told apple gcc version number is not guaranteed to increase
monotonically. Change the preprocess condition to make it less risky.

The configuration change is done during the middle 10.4 life cycle so we have
to check __APPLE_CC. For future OS X release, we should be able to assume
-fenable-cxa-atexit is the default.

llvm-svn: 30024
 2006-09-01 18:42:59 +00:00
Evan Cheng d176cdf76d *** empty log message *** 
llvm-svn: 30023
 2006-09-01 18:40:46 +00:00
Evan Cheng e93762d36e Allow legalizer to expand ISD::MUL using only MULHS in the rare case that is 
possible and the target only supports MULHS.

llvm-svn: 30022
 2006-09-01 18:17:58 +00:00
Jim Laskey 5352d0cc4d Corrections. 
llvm-svn: 30021
 2006-09-01 12:55:05 +00:00
Evan Cheng 4b8b6ae924 Better comments. 
llvm-svn: 30017
 2006-09-01 07:09:56 +00:00
Evan Cheng c5fddc566c Yikes. This requires checking apple gcc version. 
llvm-svn: 30016
 2006-09-01 07:00:46 +00:00
Chris Lattner 93c067dc2d Pull some code out of a hot recursive function because the common case doesn't 
need recursion.

llvm-svn: 30015
 2006-09-01 07:00:23 +00:00
Chris Lattner 53ca302eb3 remove some particularly expensive assertions 
llvm-svn: 30014
 2006-09-01 06:57:35 +00:00
Chris Lattner 3eac2c87aa Reserve space in the ValueNumberInfo vector. This speeds up live interval 
analysis 16% on crafty.

Wrap long lines.

llvm-svn: 30012
 2006-09-01 06:10:18 +00:00
Chris Lattner 6bfccbb08b add a simple reserve method. 
llvm-svn: 30011
 2006-09-01 06:08:16 +00:00
Chris Lattner f765351978 Iterative coallescing doesn't buy us anything (we get identical results on 
crafty with and without it).  Removing it speeds up live intervals 6%.

llvm-svn: 30010
 2006-09-01 04:02:42 +00:00
Nick Lewycky f6f529d008 Don't confuse canonicalize and lookup. Fixes predsimplify.reg4.ll. Also 
corrects missing optimization opportunity removing cases from a switch.

llvm-svn: 30009
 2006-09-01 03:26:35 +00:00
Evan Cheng 31305c45da DAG combiner fix for rotates. Previously the outer-most condition checks 
for ROTL availability. This prevents it from forming ROTR for targets that
has ROTR only.

llvm-svn: 29997
 2006-08-31 07:41:12 +00:00
Chris Lattner a700a19d04 Add a special case that speeds up coallescing a bit, but not enough. 
llvm-svn: 29996
 2006-08-31 06:48:26 +00:00
Chris Lattner 78cca7243c Delete copies as they are coallesced instead of waiting until the end. 
llvm-svn: 29995
 2006-08-31 05:58:59 +00:00
Chris Lattner aa36808fd3 avoid calling the virtual isMoveInstr method endlessly by caching its results. 
llvm-svn: 29994
 2006-08-31 05:54:43 +00:00
Chris Lattner b096190f29 Add a note about C++ -> C with libstdc++ 
llvm-svn: 29993
 2006-08-31 04:26:31 +00:00
Nick Lewycky a24fdaea0b This program crashes the PredicateSimplifier. Not marked XFAIL because 
the PredicateSimplifier is skipped in make check anyways.

llvm-svn: 29992
 2006-08-31 03:13:05 +00:00
Nick Lewycky 08674ab707 Properties where both Values weren't in the union (as being equal to 
another Value) weren't being found by findProperties.

This fixes predsimplify.ll test6, a missed optimization opportunity.

llvm-svn: 29991
 2006-08-31 00:39:16 +00:00
Chris Lattner f5da261701 Bugfix for recent coallescer crash 
llvm-svn: 29990
 2006-08-30 23:03:35 +00:00
Chris Lattner cb74860cce Fix a compiler crash bootstrapping llvm-gcc. 
llvm-svn: 29989
 2006-08-30 23:02:29 +00:00
Chris Lattner aea29af0bc Restore source-level compatibility with clients of these functions. 
llvm-svn: 29978
 2006-08-30 20:47:48 +00:00
Chris Lattner 9543866c27 Guess what happens when asserts are disabled. :( 
Also, the assert could never fire due to || instead of &&.

llvm-svn: 29977
 2006-08-30 20:37:06 +00:00
Chris Lattner 69c32d5564 fix 80 column issue 
llvm-svn: 29972
 2006-08-30 05:56:52 +00:00
Chris Lattner f5bed76353 Instantiate Statistic<> in one place, not in every .o file that uses it. 
llvm-svn: 29971
 2006-08-30 04:17:00 +00:00
Nick Lewycky 5f8f9af65c Move to using the EquivalenceClass ADT. Removes SynSets. 
If a branch's condition has become a ConstantBool, simplify it immediately.
Removing the edge saves work and exposes up more optimization opportunities
in the pass.
Add support for SelectInst.

llvm-svn: 29970
 2006-08-30 02:46:48 +00:00
Chris Lattner dcc8bcc04d Code cleanups, no functionality change. 
llvm-svn: 29969
 2006-08-29 23:38:20 +00:00
Chris Lattner 34434e97c9 Teach the coallescer to coallesce live intervals joined by an arbitrary 
number of copies, potentially defining live ranges that appear to have
differing value numbers that become identical when coallsced.  Among other
things, this fixes CodeGen/X86/shift-coalesce.ll and PR687.

llvm-svn: 29968
 2006-08-29 23:18:15 +00:00
Chris Lattner faa6355510 new testcase for pr687 
llvm-svn: 29967
 2006-08-29 23:09:59 +00:00