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path: root/lib/Analysis/ScalarEvolution.cpp
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2007-11-23Fix a bug where we'd try to find a scev value for a bitcast operand,Chris Lattner
even though the bitcast operand did not have integer type. This fixes PR1814. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44286 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-22Instead of calculating constant factors, calculate the number of trailingNick Lewycky
bits. Patch from Wojciech Matyjewicz. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44268 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-20Small cleanup. Use APInt::getHighBitsSet method instead of shift left.Nick Lewycky
"setcc" -> "icmp op" in comments. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44249 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-20Be more careful when transforming | to +. Patch from Wojciech Matyjewicz.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44248 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-15Reverted r44163 per requestAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44177 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-15Fix handling of overflow in loop calculation by adding new UDiv SCEV. This SCEVNick Lewycky
is disabled in the sense that it will refuse to create one from a UDiv instruction, until the code is better tested. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44163 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22Move the SCEV object factors from being static members of the individualDan Gohman
SCEV subclasses to being non-static member functions of the ScalarEvolution class. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43224 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-27Build the correct range for loops with unusual bounds. Fix from Jay Foad.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42394 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-06Next round of APFloat changes.Dale Johannesen
Use APFloat in UpgradeParser and AsmParser. Change all references to ConstantFP to use the APFloat interface rather than double. Remove the ConstantFP double interfaces. Use APFloat functions for constant folding arithmetic and comparisons. (There are still way too many places APFloat is just a wrapper around host float/double, but we're getting there.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41747 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-21Use SmallVector instead of std::vector.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41207 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-06Let scalar-evolution analyze loops with an unsigned comparison for the exitNick Lewycky
condition. Fixes 1597. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40867 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-06Don't assume it's safe to transform a loop just because it's dominated by anyNick Lewycky
comparison. Fixes bug 1598. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40866 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-16Handle decrementing loops properly. Fixes PR1533.Nick Lewycky
Always pass the constant as the second parameter to HowManyLessThans. Remove obsolete "isSigned" parameter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39893 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-09Move the APInt form of SCEVUnknown::getIntegerSCEV to SCEVConstant::get, andDan Gohman
use SCEVConstant::get instead of SCEVUnknown::get when constructing a SCEV for a ConstantInt. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38457 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-19Rename ScalarEvolution::deleteInstructionFromRecords toDan Gohman
deleteValueFromRecords and loosen the types to all it to accept Value* instead of just Instruction*, since this is what ScalarEvolution uses internally anyway. This allows more flexibility for future uses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37657 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-18In SCEVAddExpr::get, skip over any cast operands before looking for nestedDan Gohman
add operands after constant operands. The recent change to recognize sign-extend expressions caused this to be exposed more often. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37628 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15Add a SCEV class and supporting code for sign-extend expressions.Dan Gohman
This created an ambiguity for expandInTy to decide when to use sign-extension or zero-extension, but it turns out that most of its callers don't actually need a type conversion, now that LLVM types don't have explicit signedness. Drop expandInTy in favor of plain expand, and change the few places that actually need a type conversion to do it themselves. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37591 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-06Optimize this test. Firstly, only Instructions may use other Instructions.Nick Lewycky
Secondly, checking whether removal succeeded tells you whether it was in the map to begin with. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37469 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-06Fix PR1487 and Transforms/IndVar/2007-06-06-DeleteDanglesPtr.llNick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37459 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-03Drop 'const'Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36662 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-02Use 'static const char' instead of 'static const int'.Devang Patel
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
2007-05-02Fix build error.Lauro Ramos Venancio
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36648 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-01Do not use typeinfo to identify pass in pass manager.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36632 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-16Revert last patch. It was already fixed.Reid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36102 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-16For PR1336:Reid Spencer
Fix a div-by-zero bug noticed by APInt. This fixes: test/Transforms/IndVarsSimplify/exit_value_tests.llx git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36099 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-15Fix a nasty bug introduced when apint'ified. This fixesChris Lattner
Transforms/IndVarsSimplify/exit_value_tests.llx git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36081 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-07Eliminate unnecessary APInt construction.Zhou Sheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35740 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-07Make APInt variables do the computation stuffs instead ofZhou Sheng
ConstantExpr::getXX if possible. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35738 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-07Eliminate unnecessary zext/trunc stuffs.Zhou Sheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35737 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-02Treat xor of signbit like an add.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35586 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-04Guard further against APInt operations with operands of unequal bit width.Reid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34897 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-02Fix an unequal bitwidth issue.Reid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34831 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-02Prefer non-virtual calls to ConstantInt::isZero over virtual calls toReid Spencer
Constant::isNullValue() in situations where it is possible. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34821 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-01Make it possible to create an SCEVUnknown from an APInt as well as an int.Reid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34816 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-01Construct ConstantInt with simpler constructor.Reid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34795 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-01Fix last night's 445.gobmk breakage which was caused by comparison ofReid Spencer
APInt's of unequal bitwidth. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34790 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
2007-03-01APIntify various computations in ScalarEvolutionReid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34780 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-28For PR1205:Reid Spencer
Make GetConstantFactor compute its result using an APInt. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34765 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-28For PR1205:Reid Spencer
Adjust to changes in ConstantRange interface. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34762 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
2007-02-02Changes to support making the shift instructions be true BinaryOperators.Reid Spencer
This feature is needed in order to support shifts of more than 255 bits on large integer types. This changes the syntax for llvm assembly to make shl, ashr and lshr instructions look like a binary operator: shl i32 %X, 1 instead of shl i32 %X, i8 1 Additionally, this should help a few passes perform additional optimizations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33776 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-30The local "ConstantFold" method is now just a watered down version ofChris Lattner
ConstantFoldInstOperands. Switch to ConstantFoldInstOperands and remove ConstantFold. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33683 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-30adjust to constant folding api changes.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33673 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
2007-01-15Unbreak VC++ build.Jeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33242 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-15rename Type::isIntegral to Type::isInteger, eliminating the old Type::isInteger.Chris Lattner
rename Type::getIntegralTypeMask to Type::getIntegerTypeMask. This makes naming much more consistent. For example, there are now no longer any instances of IntegerType that are not considered isInteger! :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33225 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-15Update code to eliminate calls to isInteger, calling isIntegral instead.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33220 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-14Fix PR1101 and Analysis/ScalarEvolution/trip-count.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33193 91177308-0d34-0410-b5e6-96231b3b80d8
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