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798b18474c
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Author SHA1 Message Date
Chris Lattner
798b18474c Add a temporary option for llc-beta: -enable-lsr-for-ppc, which turns on 
Loop Strength Reduction.

llvm-svn: 20399
 2005-03-02 06:19:22 +00:00
Reid Spencer
a5fbf1d659 Be slightly more accurate in an error message. 
llvm-svn: 20397
 2005-03-02 05:45:56 +00:00
Chris Lattner
0bb2828efb Fix a nasty order of evaluation bug that Gabor Greif ran into. Here's an 
explanation from IRC:

	|sabre|	I think it's an order of evaluation thing
	|sabre|	for me, the RHS of the assignment is evaluated first
	|sabre|	getTypeDescription checks to see if ConcreteTypeDescription[Ty] contains anything
	|sabre|	since it doesn't, it computes and returns the value
	|sabre|	this gets put into the map.
	|sabre|	For you, the LHS is evaluated first.
	|sabre|	Map[Ty] (aka ConcreteTypeDescriptions[Ty]) inserts an empty string into the map, returning a reference
	|sabre|	getTypeDesc then sees the empty string in the map
	|sabre|	and returns it
	|sabre|	bork :)

llvm-svn: 20394
 2005-03-02 03:54:43 +00:00
Chris Lattner
61e4645073 Now that type does not derive from Value, these do not need to be virtual. 
llvm-svn: 20393
 2005-03-02 03:43:55 +00:00
Misha Brukman
07b7f5303b Fix HTML-4.01 Strict compliance 
llvm-svn: 20386
 2005-03-01 17:19:21 +00:00
Misha Brukman
aa7c98645d Use a colon instead of a period since we're introducing a command list 
llvm-svn: 20385
 2005-03-01 17:15:23 +00:00
Reid Spencer
d61247f46e Correct a typo in Makefile.rules. 
Patch idea contributed by Vladimir Merzliakov.

llvm-svn: 20384
 2005-03-01 16:27:06 +00:00
Jeff Cohen
6d82d5b23e Fixed the following LSR bugs: 
* Loop invariant code does not dominate the loop header, but rather
    the end of the loop preheader.

  * The base for a reduced GEP isn't a constant unless all of its
    operands (preceding the induction variable) are constant.

  * Allow induction variable elimination for the simple case after all.

Also made changes recommended by Chris for properly deleting
instructions.

llvm-svn: 20383
 2005-03-01 03:46:11 +00:00
Alkis Evlogimenos
422af394b6 Lower llvm.isunordered(a, b) into a != a | b != b. 
llvm-svn: 20382
 2005-03-01 02:07:58 +00:00
Chris Lattner
af145bfdb2 cleanup my miswording 
llvm-svn: 20381
 2005-02-28 19:47:14 +00:00
Chris Lattner
9d57998cda Remove tabs from file. 
llvm-svn: 20380
 2005-02-28 19:36:15 +00:00
Chris Lattner
bc5b5ded4e Add a test for llvm.prefetch. 
llvm-svn: 20379
 2005-02-28 19:31:42 +00:00
Chris Lattner
b2720f5b57 Add support to the C backend for llvm.prefetch. Patch contributed by 
Justin Wick!

llvm-svn: 20378
 2005-02-28 19:29:46 +00:00
Chris Lattner
82480f68d7 recognize llvm.prefetch. Patch contributed by Justin Wick! 
llvm-svn: 20377
 2005-02-28 19:28:00 +00:00
Chris Lattner
c4205a6b93 Verify llvm.prefetch. 
llvm-svn: 20376
 2005-02-28 19:27:42 +00:00
Chris Lattner
9ccfcab3db Lower prefetch to a noop, patch contributed by Justin Wick! 
llvm-svn: 20375
 2005-02-28 19:27:23 +00:00
Chris Lattner
df11946bb8 Add a prefetch intrinsic, patch contributed by Justin Wick! 
llvm-svn: 20374
 2005-02-28 19:25:57 +00:00
Chris Lattner
e170bea312 Document llvm.prefetch, patch contributed by Justin Wick! 
llvm-svn: 20373
 2005-02-28 19:24:19 +00:00
Andrew Lenharth
7dc9ea9509 fix integer division and stuff 
llvm-svn: 20372
 2005-02-28 17:22:18 +00:00
Chris Lattner
7d7a54b284 Adam Treat implemented this :) 
llvm-svn: 20371
 2005-02-28 16:52:28 +00:00
Reid Spencer
140a377f08 Changes to enable creation of native executables directly from gccld and to 
ensure that -L paths don't contain both bytecode and native libraries.
This patch contributed by Adam Treat.

llvm-svn: 20370
 2005-02-28 08:45:35 +00:00
Reid Spencer
623e1450d0 A few small steps toward HTML 4.01 Strict compliance. 
llvm-svn: 20369
 2005-02-28 01:10:48 +00:00
Reid Spencer
a38e941cd4 Add a little more detail about the configuration process for projects. 
llvm-svn: 20368
 2005-02-28 00:40:29 +00:00
Jeff Cohen
d5b1827c3f Fix crash in LSR due to attempt to remove original induction variable. However, 
for reasons explained in the comments, I also deactivated this code as it needs
more thought.

llvm-svn: 20367
 2005-02-28 00:08:56 +00:00
Jeff Cohen
fd9504c7d9 PHI nodes were incorrectly placed when more than one GEP is reduced in a loop. 
llvm-svn: 20360
 2005-02-27 21:08:04 +00:00
Jeff Cohen
6258d4a431 First pass at improved Loop Strength Reduction. Still not yet ready for prime time. 
llvm-svn: 20358
 2005-02-27 19:37:07 +00:00
Chris Lattner
54dd9054f9 Bug fixed 
llvm-svn: 20357
 2005-02-27 19:31:02 +00:00
Chris Lattner
f32f103de7 New testcase for PR529 
llvm-svn: 20356
 2005-02-27 19:28:30 +00:00
Chris Lattner
970db20de4 Fix this to create a recursive mutex. Patch by Evan Jones! 
llvm-svn: 20355
 2005-02-27 19:07:36 +00:00
Chris Lattner
b632a13aa7 Use const iterators where possible. Patch by Evan Jones! 
llvm-svn: 20354
 2005-02-27 19:06:10 +00:00
Chris Lattner
4750a2274f Rename include guard, patch contributed by Evan Jones! 
llvm-svn: 20353
 2005-02-27 19:05:24 +00:00
Chris Lattner
73d4556bb6 Teach globalopt how memset/cpy/move affect memory, to allow better optimization. 
llvm-svn: 20352
 2005-02-27 18:58:52 +00:00
Chris Lattner
4335b24d4d new testcase globalopt should handle. 
llvm-svn: 20351
 2005-02-27 18:48:19 +00:00
Chris Lattner
57a2970b33 new testcase globalopt should implement 
llvm-svn: 20350
 2005-02-27 18:47:17 +00:00
Chris Lattner
6542f44a77 Test that a global is marked constant when it can be. 
llvm-svn: 20349
 2005-02-27 18:19:26 +00:00
Alkis Evlogimenos
b99898e1a0 Add llc to tools. 
llvm-svn: 20345
 2005-02-27 10:21:37 +00:00
Chris Lattner
a024984017 Fix spelling, patch contributed by Gabor Greif! 
llvm-svn: 20343
 2005-02-27 06:18:25 +00:00
Chris Lattner
cf3862ce8d Fix spelling, patch contributed by Gabor Greif 
llvm-svn: 20342
 2005-02-27 06:15:51 +00:00
Chris Lattner
325b40fe15 Fix misspellings, patch contributed by Gabor Greif! 
llvm-svn: 20341
 2005-02-27 06:14:21 +00:00
Chris Lattner
a17076b771 Remove some stuff I checked in accidentally 
llvm-svn: 20340
 2005-02-27 04:32:35 +00:00
Chris Lattner
2311dcd08d DCE a dead function 
llvm-svn: 20339
 2005-02-26 23:36:45 +00:00
Reid Spencer
24b41ba78d Implement an isBytecodeArchive method to determine if an archive contains 
bytecode file members or not.
Patch Contributed By Adam Treat

llvm-svn: 20338
 2005-02-26 22:00:32 +00:00
Chris Lattner
cf3cda8125 1 + 100 + 51 == 152, not 52. 
If we fold three constants together (c1+c2+c3), make sure to keep
LHSC updated, instead of reusing (in this case), the 1 instead of the
partial sum.

llvm-svn: 20337
 2005-02-26 18:50:19 +00:00
Chris Lattner
087e8583de A testcase that we miscompile, noticed from the demo page. 
llvm-svn: 20336
 2005-02-26 18:49:04 +00:00
Chris Lattner
f1e7201a6c Fix a case where we incorrectly returned hasComputableLoopEvolution for 
a ternary commutative expr.  Remove FIXME that does not need to be fixed
(can't happen).

llvm-svn: 20335
 2005-02-26 18:40:02 +00:00
Chris Lattner
14f720d625 remove extraneous cast 
llvm-svn: 20334
 2005-02-26 18:33:28 +00:00
Andrew Lenharth
b5331ffe0f make BB labels be exported for debuging, add fp negation optimization, further pecimise the FP instructions 
llvm-svn: 20332
 2005-02-25 22:55:15 +00:00
Chris Lattner
ea8835f35b add an entry, add links to entries for demo page. 
llvm-svn: 20328
 2005-02-25 20:30:21 +00:00
Chris Lattner
9340ba4bf9 Handle null a bit more carefully. 
Actually teach dsa about select instructions.  This doesn't affect the
graph in any way other than not setting a spurious U marker on pointer
nodes that are selected.

llvm-svn: 20324
 2005-02-25 01:27:48 +00:00
Reid Spencer
23cd09f4a7 Use DataInstall macro instead of INSTALL. 
llvm-svn: 20322
 2005-02-24 21:43:43 +00:00