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path: root/lib/VMCore/ConstantFold.cpp
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2006-12-04For PR950: Implement a stub for folding ICmp and FCmp instructionsReid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32169 91177308-0d34-0410-b5e6-96231b3b80d8
2006-12-04Change inferred casts to explicit casts.Reid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32165 91177308-0d34-0410-b5e6-96231b3b80d8
2006-12-01These should be rewritten to fold without using the 'Rules' mechanism, butChris Lattner
until this happens at least make sext from bool and sitofp from bool do the right thing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32087 91177308-0d34-0410-b5e6-96231b3b80d8
2006-12-01this logic is broken for trunc to bool, replace the folding logic for truncChris Lattner
completely, as it is trivial. We should probably do this for the rest of the cast operations. This fixes ConstProp/2006-12-01-TruncBoolBug.ll. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32081 91177308-0d34-0410-b5e6-96231b3b80d8
2006-12-01Fix a typo introduced by the cast patch that horribly broke a lot of vectorChris Lattner
code. Testcase here: Transforms/ConstProp/2006-11-30-vector-cast.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32062 91177308-0d34-0410-b5e6-96231b3b80d8
2006-12-01Don't fold "ptrtoint GV to bool" since this should be doing a truncate notReid Spencer
a comparison against zero. Instead fold setne(GV,null) and seteq(GV,null) to ConstantBool::True or ConstantBool::False, respectively. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32060 91177308-0d34-0410-b5e6-96231b3b80d8
2006-12-01Introducing external weak linkage. Darwin codegen should be added later.Anton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32052 91177308-0d34-0410-b5e6-96231b3b80d8
2006-11-27For PR950:Reid Spencer
The long awaited CAST patch. This introduces 12 new instructions into LLVM to replace the cast instruction. Corresponding changes throughout LLVM are provided. This passes llvm-test, llvm/test, and SPEC CPUINT2000 with the exception of 175.vpr which fails only on a slight floating point output difference. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31931 91177308-0d34-0410-b5e6-96231b3b80d8
2006-11-08Remove redundant <cmath>.Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31561 91177308-0d34-0410-b5e6-96231b3b80d8
2006-11-08For PR950:Reid Spencer
This patch converts the old SHR instruction into two instructions, AShr (Arithmetic) and LShr (Logical). The Shr instructions now are not dependent on the sign of their operands. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31542 91177308-0d34-0410-b5e6-96231b3b80d8
2006-11-02Remove unused variables.Reid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31375 91177308-0d34-0410-b5e6-96231b3b80d8
2006-11-02For PR950:Reid Spencer
Replace the REM instruction with UREM, SREM and FREM. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31369 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-26For PR950:Reid Spencer
Make necessary changes to support DIV -> [SUF]Div. This changes llvm to have three division instructions: signed, unsigned, floating point. The bytecode and assembler are bacwards compatible, however. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31195 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20For PR950:Reid Spencer
This patch implements the first increment for the Signless Types feature. All changes pertain to removing the ConstantSInt and ConstantUInt classes in favor of just using ConstantInt. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31063 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-13Fix another dtor issue. The function local statics in this function wereChris Lattner
being destroyed at inconvenient times. Switch to using non-local ManagedStatic objects, which actually also speeds up ConstRules::get. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30931 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-28Eliminate ConstantBool::True and ConstantBool::False. Instead, ↵Chris Lattner
provideConstantBool::getTrue() and ConstantBool::getFalse(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30664 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-17Add new SetCondInst::isRelational/isEquality methods. RenameChris Lattner
Instruction::isRelational to Instruction::isComparison. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30444 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-27s|llvm/Support/Visibility.h|llvm/Support/Compiler.h|Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29911 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-28Use hidden visibility to reduce the sizes of some .o files. This chops 60K ↵Chris Lattner
off a release llvm-dis. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28969 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-21Add more anonymous namespaces to make it clear that these are private classesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28901 91177308-0d34-0410-b5e6-96231b3b80d8
2006-04-08Add shufflevector support, todo, implement better constant folding.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27510 91177308-0d34-0410-b5e6-96231b3b80d8
2006-04-07Constant fold extractelement(zero, x) -> zeroChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27479 91177308-0d34-0410-b5e6-96231b3b80d8
2006-04-02Constant fold casts from things like <4 x int> -> <4 x uint>, likewise int<->fp.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27336 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-31constant fold extractelement with undef operands.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27301 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-17VMCore support for the insertelement operation.Robert Bocchino
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25408 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-10Added constant folding support for the extractelement operation.Robert Bocchino
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25187 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-05Implement a few symbolic constant folding things. X ? Y : Y is Y.Chris Lattner
Fold: seteq ({ short }* cast (int 1 to { short }*), { short }* null) setlt ({ short }* cast (int 1 to { short }*), { short }* cast (int 2 to { short }*)) to false/true. These last two commonly occur in the output of compilers that tag integers, like cozmic's scheme compiler. Tested by Regression/Assembler/ConstantExprFold.llx git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25112 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-05fix some formatting problemsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25110 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-04implement constant folding of ==/!= on constant packed, simplify some code.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25074 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-04implement constant folding for the element-wise binary operationsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25073 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-04don't crash when trying to constant fold packed expressions.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25072 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-03Use ANSI-approved way of getting the value infinity (otherwise VC++ won't ↵Jeff Cohen
compile it) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21662 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-02fold fp div by 0 to inf, the way gcc does. This is legal according to the ↵Andrew Lenharth
FP spec git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21655 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-24Shut GCC 4.0 up about classes with virtual functions but no virtualReid Spencer
destructor. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21510 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-21Remove trailing whitespaceMisha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21427 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-28Fix a nasty thinko in my previous commit.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19881 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-28Fix ConstProp/2005-01-28-SetCCGEP.ll: indexing over zero sized elements doesChris Lattner
not change the address. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19874 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-06No need to pessimize current code for future possibilities.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19311 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-22Fix test/Regression/CFrontend/2003-11-01-EmptyStructCrash.cChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18115 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-17Generalize this code to turn any cast-to-first-element-of into a gep constexprChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17914 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-17fold gep undef, ... -> undefChris Lattner
This comes up many times in perlbmk and probably others. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17100 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-17Fix constant folding relational operators with undef operands.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17077 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-16Implement constant folding of undef values.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17070 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-11Allow creation of GEP constantexprs with a vector of value* operands asChris Lattner
well as a vector of constant*'s. It turns out that this is more efficient and all of the clients want to do that, so we should cater to them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16923 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-11If we are trying to create a ConstantExpr cast that is really a GEP to theChris Lattner
first element of an array, return a GEP instead of a cast. This allows us to transparently fold this: int* getelementptr (int* cast ([100 x int]* %Gbody to int*), int 40) into this: int* getelementptr ([100 x int]* %Gbody, int 0, int 40) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16911 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-17bug 122:Reid Spencer
- Replace ConstantPointerRef usage with GlobalValue usage - Minimize redundant isa<GlobalValue> usage - Correct isa<Constant> for GlobalValue subclass git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14927 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-15Implement folding of expressions like 'uint cast (int* getelementptr (int*Chris Lattner
null, uint 1) to uint)' to a constant integer. We can only do this with primitive LLVM types, because other types have target-specific sizes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14837 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-07When folding constant expr gep's, don't force the use of long indices.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14658 91177308-0d34-0410-b5e6-96231b3b80d8
2004-06-17Rename Type::PrimitiveID to TypeId and ::getPrimitiveID() to ::getTypeID()Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14201 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-30Fix a bug that Chris asserts emphatically is a bug. The changed clauseReid Spencer
would always return false because the Type of a type value is always Type::TypeTY and can never be a floating point type. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13902 91177308-0d34-0410-b5e6-96231b3b80d8
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