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108 Commits

Author SHA1 Message Date
Eli Friedman
0b79a7727d Replace isTrapping with a new, similar method called 
isSafeToSpeculativelyExecute. The new method is a bit closer to what 
the callers actually care about in that it rejects more things callers 
don't want.  It also adds more precise handling for integer 
division, and unifies code for analyzing the legality of a speculative 
load.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76150 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-17 04:28:42 +00:00
Dan Gohman
9377386493 Add an isLoopSimplifyForm() predicate, following the example of 
isLCSSAForm(), to test whether a loop is in the form guaranteed
by the LoopSimplify pass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76077 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-16 16:16:23 +00:00
Dan Gohman
bdc017edac Make makeLoopInvariant report whether it made any changes or not, 
and use this to simplify more code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75722 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-15 01:25:43 +00:00
Dan Gohman
a342026504 Introduce a new LoopInfo utility function makeLoopInvariant, which 
works similar to isLoopInvariant, except that it will do trivial
hoisting to try to make the value loop invariant if it isn't already.
This makes it easier for transformation passes to clear trivial
instructions out of the way (the regular LICM pass doesn't run
until relatively late). This is code factored out of LoopSimplify
and other places.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75578 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-14 01:06:29 +00:00
Dan Gohman
16a2c927e9 Move isLCSSAForm, isLoopInvariant, getCanonicalInductionVariable, 
and related functions out of LoopBase and into Loop, since they
are specific to BasicBlock-based loops. This also allows the code
to be moved out-of-line.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75523 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-13 22:02:44 +00:00
Dan Gohman
9d59d9f849 Eliminate a layer of indirection in LoopInfo and MachineLoopInfo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74394 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-27 21:22:48 +00:00
Dan Gohman
c965ee223c Remove some unnecessary #includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72948 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-05 16:32:58 +00:00
Dan Gohman
7e5440404b Change the description string of the LoopInfo pass. 
"Construction" makes it sound like a pass that might
modify the CFG to construct natural loops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70580 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 21:58:05 +00:00
Evan Cheng
5c9f34b7a0 Remove dead comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61201 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 09:01:18 +00:00
Dan Gohman
84b7df43fb Remove uses of llvm/System/IncludeFile.h that are no longer needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50695 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-06 01:32:53 +00:00
Devang Patel
9f83512ce8 These passes preserve CFG. 
This patch fixes Benchmarks/Trimaran/enc-pc1/enc-pc1 failure reported by Grawp-PIC i386 nightly tester


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48623 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-20 23:27:18 +00:00
Devang Patel
4f4c28f75f Restore isCFGOnly property of various analysis passes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48579 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-20 02:25:21 +00:00
Devang Patel
c758209153 PassInfo keep tracks whether a pass is an analysis pass or not. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48554 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-03-19 21:56:59 +00:00
Chris Lattner
4ee451de36 Remove attribution from file headers, per discussion on llvmdev. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 20:36:04 +00:00
Owen Anderson
d735ee85db Make LoopInfoBase more generic, in preparation for having MachineLoopInfo. This involves a small interface change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44348 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-27 03:43:35 +00:00
Owen Anderson
44a95e06cc More templatization. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44158 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-15 05:00:15 +00:00
Owen Anderson
019b92a70c Start the process of making MachineLoopInfo possible by templating Loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44097 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-14 02:33:58 +00:00
Devang Patel
e79bad66e0 Use SmallVector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41230 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-21 16:54:51 +00:00
Devang Patel
7c6c55db4d No need to hardcode SmallVector size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41228 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-21 16:39:43 +00:00
Devang Patel
b7211a2ce1 Use SmallVector instead of std::vector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41207 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-21 00:31:24 +00:00
Devang Patel
58e0ef1e90 Verify loop info. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40062 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-19 18:02:32 +00:00
Devang Patel
53c279b194 Use DominatorTree instead of ETForest. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37507 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-08 00:17:13 +00:00
Devang Patel
1997473cf7 Drop 'const' 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36662 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-03 01:11:54 +00:00
Devang Patel
3e15bf33e0 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36652 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-02 21:39:20 +00:00
Devang Patel
794fd75c67 Do not use typeinfo to identify pass in pass manager. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36632 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-01 21:15:47 +00:00
Chris Lattner
b1f5d8bf6f Speed up Loop::isLCSSAForm by using a hash table instead of a sorted vector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34900 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-04 04:06:39 +00:00
Reid Spencer
e4d87aa2de For PR950: 
This patch removes the SetCC instructions and replaces them with the ICmp
and FCmp instructions. The SetCondInst instruction has been removed and
been replaced with ICmpInst and FCmpInst.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32751 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-23 06:05:41 +00:00
Bill Wendling
e81561909d Changed llvm_ostream et all to OStream. llvm_cerr, llvm_cout, llvm_null, are 
now cerr, cout, and NullStream resp.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32298 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-07 01:30:32 +00:00
Bill Wendling
6f81b51021 Removed some of the iostream #includes. Moved towards converting to using 
llvm streams


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31983 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-28 22:46:12 +00:00
Chris Lattner
7466ebf045 add a method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31249 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 01:24:05 +00:00
Devang Patel
4b8f36f106 Do not rely on std::sort and std::erase to get list of unique 
exit blocks. The output is dependent on addresses of basic block.

Add and use Loop::getUniqueExitBlocks.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29966 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-29 22:29:16 +00:00
Chris Lattner
5d8925c7c5 Eliminate RegisterAnalysis. RegisterPass now does all that is necessary. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29921 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-27 22:30:17 +00:00
Chris Lattner
69b3992154 Make Loop::getExitBlocks significantly faster for large loops. Instead of 
pounding on Loop::contains (which is O(n) in the size of the loop), use a
sorted vector, which is O(log(N)) for each query.  This speeds up Duraid's
horrible testcase from ~72s to ~31s in a debug build.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29645 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-12 05:02:03 +00:00
Chris Lattner
880ddb018a Speed up Loop::isLCSSAForm by using a binary search and single-entry cache. 
This reduces LCSSA pass time from 1.5s to 0.96s when run on eon in release+asserts mode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29464 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-02 00:14:16 +00:00
Owen Anderson
3cc86cc11f Update isLCSSAForm to handle PHI nodes specially for live-out detection. This 
is the same as the recent patch to LCSSA.cpp.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28773 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-06-13 20:45:22 +00:00
Owen Anderson
c2cc15cf9d Re-commit the safe parts of my 6/9 patch. Still working on fixing the unsafe parts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28748 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-06-11 19:22:28 +00:00
Evan Cheng
b9b2b309d3 Back out Owen's 6/9 changes. They broke MultiSource/Benchmarks/Prolangs-C/bison (and perhaps others). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28747 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-06-11 09:32:57 +00:00
Owen Anderson
f25c19c6b5 Make Loop able to verify that it is in LCSSA-form, and have the LCSSA pass assert 
on this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28738 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-06-09 18:33:30 +00:00
Reid Spencer
4f1bd9e996 For PR780: 
1. Fix the macros in IncludeFile.h to put everything in the llvm namespace
2. Replace the previous explicit mechanism in all the .h and .cpp files
   with the macros in IncludeFile.h
This gets us a consistent mechanism throughout LLVM for ensuring linkage.
Next step is to make sure its used in enough places.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28715 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-06-07 22:00:26 +00:00
Reid Spencer
192913e281 Change from using a stub function to a stub variable for passing to the 
IncludeFile hack to ensure linkage of analysis passes. This works around
some -pedantic warnings about assigning an object to a function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28621 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-06-01 07:02:51 +00:00
Chris Lattner
60330ff193 add an assert 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26178 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 20:14:17 +00:00
Chris Lattner
25abb1dc09 Change ET-Forest to automatically recalculate its DFSnum's if too many slow 
queries are made.

Patch by Daniel Berlin!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25323 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-14 20:55:09 +00:00
Chris Lattner
45a0e9b04d Switch loopinfo to using ETForest instead of DominatorSet to compute itself. 
Patch by Daniel Berlin!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25199 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-01-11 05:08:29 +00:00
Chris Lattner
b6a69e70e0 Add a new getLoopLatch() method. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23315 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-12 17:03:55 +00:00
Misha Brukman
f4f85998bf Remove extra blank line 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21706 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-05 23:43:47 +00:00
Misha Brukman
dedf2bd5a3 Convert tabs to spaces 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21439 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-22 04:01:18 +00:00
Misha Brukman
2b37d7cf28 Remove trailing whitespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21416 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-21 21:13:18 +00:00
Reid Spencer
ce9653ce44 For PR387:\ 
Make only one print method to avoid overloaded virtual warnings when \
compiled with -Woverloaded-virtual


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18589 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-07 04:03:45 +00:00
Reid Spencer
2da5c3dda6 Convert code to compile with vc7.1. 
Patch contributed by Paolo Invernizzi. Thanks Paolo!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16368 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-15 17:06:42 +00:00
Alkis Evlogimenos
20aa474f8f Fixes to make LLVM compile with vc7.1. 
Patch contributed by Paolo Invernizzi!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16152 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-03 18:19:51 +00:00