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39 Commits

Author SHA1 Message Date
Devang Patel 4555618854 Before deleting a basic block, give other loop passes a chance cleanup analysis values, related to the instructions in the basic block. 
llvm-svn: 67719
 2009-03-25 23:57:48 +00:00
Chris Lattner 4c1e9541d3 Sprinkle some PrettyStackEntry magic into the passmanager. With this, we now 
get nice and happy stack traces when we crash in an optimizer or codegen.  For
example, an abort put in UnswitchLoops now looks like this:

Stack dump:
0.	Program arguments: clang pr3399.c -S -O3 
1.	<eof> parser at end of file
2.	per-module optimization passes
3.	Running pass 'CallGraph Pass Manager' on module 'pr3399.c'.
4.	Running pass 'Loop Pass Manager' on function '@foo'
5.	Running pass 'Unswitch loops' on basic block '%for.inc'
Abort

llvm-svn: 66260
 2009-03-06 06:45:05 +00:00
Dan Gohman 4330034160 Add a method to ScalarEvolution for telling it when a loop has been 
modified in a way that may effect the trip count calculation. Change
IndVars to use this method when it rewrites pointer or floating-point
induction variables instead of using a doInitialization method to
sneak these changes in before ScalarEvolution has a chance to see
the loop. This eliminates the need for LoopPass to depend on
ScalarEvolution.

llvm-svn: 64810
 2009-02-17 20:49:49 +00:00
Dan Gohman 143206d07b Move dumpPassStructure out of line. 
llvm-svn: 64796
 2009-02-17 19:41:26 +00:00
Dan Gohman a79db30d28 Tidy up several unbeseeming casts from pointer to intptr_t. 
llvm-svn: 55779
 2008-09-04 17:05:41 +00:00
Chris Lattner 4c493d9a58 Don't call getAnalysisUsage unless -debug-pass is enabled. This speeds 
up the passmgr by avoiding useless work.

llvm-svn: 54528
 2008-08-08 15:14:09 +00:00
Dan Gohman 0e52a0c89e Fix spelling of "hierarchy" in comments. 
llvm-svn: 53489
 2008-07-11 22:51:32 +00:00
Devang Patel 874a3a0b0d Keep track of inherited analysis (e.g. dominator tree). 
llvm-svn: 53088
 2008-07-03 07:02:30 +00:00
Devang Patel 67c79a4992 Fix typos in comments. 
Thanks for the feedback!

llvm-svn: 52978
 2008-07-01 19:50:56 +00:00
Devang Patel 9dbe4d15ec Add dom info verifier. 
llvm-svn: 52967
 2008-07-01 17:44:24 +00:00
Chris Lattner f3ebc3f3d2 Remove attribution from file headers, per discussion on llvmdev. 
llvm-svn: 45418
 2007-12-29 20:36:04 +00:00
Dan Gohman c731c97fac Use empty() member functions when that's what's being tested for instead 
of comparing begin() and end().

llvm-svn: 42585
 2007-10-03 19:26:29 +00:00
Devang Patel ee35011d01 ooops... 
llvm-svn: 42118
 2007-09-18 23:58:14 +00:00
Anton Korobeynikov 5849a625ff - Use correct header for SCEV inside LoopPass.cpp 
- Move SCEVExpander::expand() out-of-line workarounding possible toolchain bug

llvm-svn: 41197
 2007-08-20 21:17:26 +00:00
Devang Patel cc2b233b62 Introduce Simple Analysis interface for loop passes. 
Right now, this interface provides hooks for only to operations, 1) clone basic block 2) delete value.

llvm-svn: 40625
 2007-07-31 08:00:57 +00:00
Devang Patel a273d1cd3a Verify loop info. 
llvm-svn: 40062
 2007-07-19 18:02:32 +00:00
Duncan Sands 60f28bff4c Replace mysterious code causing a g++-4.2 warning 
with hopefully correct code that pleases g++-4.2.

llvm-svn: 40051
 2007-07-19 09:42:01 +00:00
Devang Patel 88197332e7 Add loop info verification mechanism. 
llvm-svn: 37822
 2007-06-29 23:13:42 +00:00
Devang Patel 8c78a0bff0 Drop 'const' 
llvm-svn: 36662
 2007-05-03 01:11:54 +00:00
Devang Patel e95c6ad802 Use 'static const char' instead of 'static const int'. 
Due to darwin gcc bug, one version of darwin linker coalesces
static const int, which defauts PassID based pass identification.

llvm-svn: 36652
 2007-05-02 21:39:20 +00:00
Devang Patel 09f162ca6a Do not use typeinfo to identify pass in pass manager. 
llvm-svn: 36632
 2007-05-01 21:15:47 +00:00
Devang Patel 2ac57e1f02 Now IndVarSimplify is a LoopPass. 
llvm-svn: 35003
 2007-03-07 06:39:01 +00:00
Devang Patel 901a27d892 Now LoopUnswitch is a LoopPass. 
llvm-svn: 34992
 2007-03-07 00:26:10 +00:00
Devang Patel db0db9740b Insert loop into LQ before visiting children. 
llvm-svn: 34982
 2007-03-06 19:50:49 +00:00
Devang Patel 4a8725cf2f Use schedulePass() instead of assignPassManager() to add new LPPassManager. 
This ensures that require analysis info is available.

llvm-svn: 34980
 2007-03-06 19:11:25 +00:00
Devang Patel ef7ac13406 Add LPPassManager::insertLoop(). 
llvm-svn: 34979
 2007-03-06 19:00:02 +00:00
Devang Patel fca3aa3645 LPPassManager::deleteLoopFromQueue() add meat. Cut-n-paste code from 
LoopUnswitch pass.

llvm-svn: 34977
 2007-03-06 18:38:33 +00:00
Devang Patel 1699384509 LPPassManager. Implement preparePassManager() hook. 
llvm-svn: 34975
 2007-03-06 17:59:37 +00:00
Devang Patel 84ffc223f1 LPPassManager : Add initialization and finalizatino hooks. 
llvm-svn: 34968
 2007-03-06 16:59:03 +00:00
Devang Patel a8c81c5261 Use std::deque to manage loop queue inside LPPassManager. 
llvm-svn: 34943
 2007-03-06 02:30:46 +00:00
Devang Patel 003a559633 Avoid constructing std::strings unless pass debugging is ON. 
llvm-svn: 34933
 2007-03-05 20:01:30 +00:00
Devang Patel b1fcb9ae15 Fix thinko. 
llvm-svn: 34528
 2007-02-23 18:05:55 +00:00
Devang Patel d3ccdfd04d Loop passes are set up to accept pointer. 
llvm-svn: 34527
 2007-02-23 17:53:17 +00:00
Devang Patel 55c3827281 Teach LoopPass to assign itself one Loop Pass Manager. 
llvm-svn: 34510
 2007-02-23 00:36:57 +00:00
Devang Patel 715add3462 Add facility that allows LoopPass to re-insert a loop into 
Loop Pass Manager's queue.

llvm-svn: 34509
 2007-02-23 00:16:44 +00:00
Devang Patel 4e335c6c71 Add LPPassManager interface that LoopPass can use to skip 
rest of the passes in the queue for a loop.

llvm-svn: 34508
 2007-02-23 00:10:16 +00:00
Devang Patel 51705713c9 Populate and walk loop queue. 
llvm-svn: 34505
 2007-02-22 23:45:15 +00:00
Devang Patel de7d49053f Add LoopQueue. This is used by loop pass manager to manage loop nest. 
llvm-svn: 34504
 2007-02-22 23:30:07 +00:00
Devang Patel 20525d2836 Add Loop Pass Manager. 
llvm-svn: 34487
 2007-02-22 08:56:17 +00:00