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path: root/lib/Support/ConstantRange.cpp
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2011-06-22Fix the implementation of ConstantRange::sub(ConstantRange). Patch by Xi Wang!Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133648 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-07PR5207: Change APInt methods trunc(), sext(), zext(), sextOrTrunc() andJay Foad
zextOrTrunc(), and APSInt methods extend(), extOrTrunc() and new method trunc(), to be const and to return a new value instead of modifying the object in place. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121120 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-28Make ConstantRange::makeICmpRegion handle all the edge cases properly. ThisNick Lewycky
also fixes PR8250. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114972 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-07Add completely hokey binary-and and binary-or operations to ConstantRange andNick Lewycky
teach LazyValueInfo to use them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113196 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-06Add a new isSignWrappedSet() method to ConstantRange.Nick Lewycky
Fix zeroExtend and signExtend to support empty sets, and to return the smallest possible result set which contains the extension of each element in their inputs. For example zext i8 [100, 10) to i16 is now [0, 256), not i16 [100, 10) which contains 63446 members. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113187 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-11Clean up ConstantRange a bit:Nick Lewycky
- remove ashr which never worked. - fix lshr and shl and add tests. - remove dead function "intersect1Wrapped". - add a new sub method to subtract ranges, with test. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110861 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-07Remove layering violation.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110505 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-07Add an inverse() method to ConstantRange.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110504 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-07Add a convenience constructor.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110493 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-26Fix a typo that several people pointed out. Also, address the case ofDan Gohman
wrapping that Duncan pointed out. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94547 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-26Add a comment about a missed opportunity.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94507 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-26Print empty and full sets specially.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94506 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Change errs() to dbgs().David Greene
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92638 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-12fix crash in my previous patchNuno Lopes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86987 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-12implement shl, ashr, and lshr methods. shl is not fully implemented as it is ↵Nuno Lopes
quite tricky. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86986 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-09add zextOrTrunc and sextOrTrunc methods, that are similar to the ones in APIntNuno Lopes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86549 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23Change Pass::print to take a raw ostream instead of std::ostream,Chris Lattner
update all code that this affects. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79830 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-19Fix ConstantRange::unionWith. Also make it work a little hard in some cases toNick Lewycky
return the smallest union of two ranges instead of just any range that happens to contain the union. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76360 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-18Replace intersectWith with maximalIntersectWith. The latter guarantees thatNick Lewycky
all values belonging to the intersection will belong to the resulting range. The former was inconsistent about that point (either way is fine, just pick one.) This is part of PR4545. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76289 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-13Fix an error in ConstantRange::getSignedMax on wrapped ranges. Thanks onceNick Lewycky
again to Daniel Dunbar and KLEE! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75449 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-13'i8 full-range' sign extended to i16 should equal [-128, 128) not [-128, 127).Nick Lewycky
Found by Daniel Dunbar and KLEE. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75448 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-13Multiply was very wrong for wrapped ranges. This supplies a half-fix that willNick Lewycky
generally return Full on all wrapped inputs. "Fixes" PR4545. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75444 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-13Fix a bug summing two full sets. The overflow checking doesn't handle sets asNick Lewycky
large as the full set, only those one size smaller. Thanks to Daniel Dunbar who found this bug using Klee! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75443 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-12Implement udiv for ConstantRanges.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75413 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-12Implement ConstantRange::multiply based on the code in LoopVR.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75410 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-11Fix handling of max and full set.Nick Lewycky
A full set is a constant range that represents any number. If you take the umax of that and [5, 10) you end up with [5, INT_MAX] because the values less than 5 would be umax's against a value which is at least 5. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75372 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-11Clarify and simplify.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75366 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-11Move a method that creates constant ranges relative to another constant rangeNick Lewycky
per icmp predicate out of predsimplify and into ConstantRange. Add another utility method that determines whether one range is a subset of another. Combine with the former to determine whether icmp pred range, range is known to be true or not. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75357 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-09Revert the part of 75177 that split ConstantRange into two classes, andDan Gohman
merge the new functionality and unittests into ConstantRange. Thanks to Nick Lewycky for pointing out that it isn't necessary to have two separate classes here. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75191 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-09Add a ConstantSignedRange class, which does for signed integersDan Gohman
what ConstantRange does for unsigned integers. Factor out a common base class for common functionality. Add some new functions for performing arithmetic on constant ranges. Some of these are currently just stubbed out with conservative implementations. Add unittests for ConstantRange and ConstantSignedRange. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75177 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-23Switch the asmprinter (.ll) and all the stuff it requires over toChris Lattner
use raw_ostream instead of std::ostream. Among other goodness, this speeds up llvm-dis of kc++ with a release build from 0.85s to 0.49s (88% faster). Other interesting changes: 1) This makes Value::print be non-virtual. 2) AP[S]Int and ConstantRange can no longer print to ostream directly, use raw_ostream instead. 3) This fixes a bug in raw_os_ostream where it didn't flush itself when destroyed. 4) This adds a new SDNode::print method, instead of only allowing "dump". A lot of APIs have both std::ostream and raw_ostream versions, it would be useful to go through and systematically anihilate the std::ostream versions. This passes dejagnu, but there may be minor fallout, plz let me know if so and I'll fix it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55263 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-17Rework the routines that convert AP[S]Int into a string. Now, instead ofChris Lattner
returning an std::string by value, it fills in a SmallString/SmallVector passed in. This significantly reduces string thrashing in some cases. More specifically, this: - Adds an operator<< and a print method for APInt that allows you to directly send them to an ostream. - Reimplements APInt::toString to be much simpler and more efficient algorithmically in addition to not thrashing strings quite as much. This speeds up llvm-dis on kc++ by 7%, and may also slightly speed up the asmprinter. This also fixes a bug I introduced into the asmwriter in a previous patch w.r.t. alias printing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54873 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-27Tidy up whitespace in ConstantRange::print output.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51606 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29Remove attribution from file headers, per discussion on llvmdev.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-14Clarify the language. Pointed out by Duncan Sands.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39857 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-14Add alternate ConstantRange intersection algorithm.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39851 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-09Fix edge case.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37532 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-26Using APInt more efficiently.Zhou Sheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36475 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-13Make the apint construction more effective.Zhou Sheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35960 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-07Add signExtend to ConstantRange, to complement zeroExtend and truncate.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35733 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-01Implement union of wrapped sets.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35534 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-10Add getter methods for the extremes of a ConstantRange.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35056 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-02Implement unionWith.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34833 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-01Remove the "isSigned" parameters from ConstantRange. It turns out theyReid Spencer
are not needed as the results are the same with or without it. Patch by Nicholas Lewycky. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34782 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-28Move ConstantRange class to lib/Support from lib/Analysis and make itsReid Spencer
interface not depend on Type or ICmpInst. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34761 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-28For PR1205:Reid Spencer
Remove ConstantInt from ConstantRange interface and adjust its users to compensate. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34758 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-28For PR1205:Reid Spencer
First round of ConstantRange changes. This makes all CR constructors use only APInt and not use ConstantInt. Clients are adjusted accordingly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34756 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-28For PR1205:Reid Spencer
Convert ConstantRange class to use APInt internally as its value type for the constant range, instead of ConstantInt. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34745 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-11Fix comments to match names of functions.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34173 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-19For PR1043:Reid Spencer
This is the final patch for this PR. It implements some minor cleanup in the use of IntegerType, to wit: 1. Type::getIntegerTypeMask -> IntegerType::getBitMask 2. Type::Int*Ty changed to IntegerType* from Type* 3. ConstantInt::getType() returns IntegerType* now, not Type* This also fixes PR1120. Patch by Sheng Zhou. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33370 91177308-0d34-0410-b5e6-96231b3b80d8
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