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path: root/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
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2012-05-27Missed parens.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157527 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-27r157525 didn't work, just disable iterator checking.Benjamin Kramer
This is obviosly right but I don't see how to do this with proper vector iterators without building a horrible mess of workarounds. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157526 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-27SDAGBuilder: Avoid iterator invalidation harder.Benjamin Kramer
vector.begin()-1 is invalid too. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157525 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-26SDAGBuilder: Don't create an invalid iterator when there is only one switch ↵Benjamin Kramer
case. Found by libstdc++'s debug mode. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157522 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-26SelectionDAGBuilder: When emitting small compare chains for switches order ↵Benjamin Kramer
them by using edge weights. SimplifyCFG tends to form a lot of 2-3 case switches when merging branches. Move the most likely condition to the front so it is checked first and the others can be skipped. This is currently not as effective as it could be because SimplifyCFG destroys profiling metadata when merging branches and switches. Merging branch weight metadata is tricky though. This code touches at most 3 cases so I didn't use a proper sorting algorithm. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157521 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-25Change interface for TargetLowering::LowerCallTo and TargetLowering::LowerCallJustin Holewinski
to pass around a struct instead of a large set of individual values. This cleans up the interface and allows more information to be added to the struct for future targets without requiring changes to each and every target. NV_CONTRIB git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157479 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-25Simplify code for calling a function where CanLowerReturn fails, fixing a ↵Eli Friedman
small bug in the process. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157446 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-18Recommited reworked r156804:Stepan Dyatkovskiy
SelectionDAGBuilder::Clusterify : main functinality was replaced with CRSBuilder::optimize, so big part of Clusterify's code was reduced. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157046 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-17SelectionDAGBuilder: CaseBlock, CaseRanges and CaseCmp changed ↵Stepan Dyatkovskiy
representation of Low and High from signed to unsigned. Since unsigned ints usually simpler, faster and allows to reduce some extra signed bit checks needed before <,>,<=,>= comparisons. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156985 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-15Rejected r156804 due to buildbots failures.Stepan Dyatkovskiy
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156808 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-15SelectionDAGBuilder::Clusterify : main functinality was replaced with ↵Stepan Dyatkovskiy
CRSBuilder::optimize, so big part of Clusterify's code was reduced. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156804 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-14Rename @llvm.debugger to @llvm.debugtrap.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156774 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-11Define a new intrinsic, @llvm.debugger. It will be similar to __builtin_trap(),Dan Gohman
but it generates int3 on x86 instead of ud2. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156593 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-01Strip the pointer casts off of allocas so that the selection DAG can find them.Bill Wendling
PR10799 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155954 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-11Fix an overly indented line. Remove an 'else' after an 'if' that returns.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154479 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-11Inline implVisitAluOverflow by introducing a nested switch to convert the ↵Craig Topper
intrinsic to an nodetype. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154478 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-11Optimize code a bit by calling push_back only once in some loops. Reduces ↵Craig Topper
compiled code size a bit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154473 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-08Optimize code a bit. No functional change intended.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154299 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-08Simplify code that tries to do vector extracts for shuffles when the mask ↵Craig Topper
width and the input vector widths don't match. No need to check the min and max are in range before calculating the start index. The range check after having the start index is sufficient. Also no need to check for an extract from the beginning differently. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154295 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-07Turn avx2 vinserti128 intrinsic calls into INSERT_SUBVECTOR DAG nodes and ↵Craig Topper
remove patterns for selecting the intrinsic. Similar was already done for avx1. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154272 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-07Remove 'else' after 'if' that ends in return.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154267 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-31Teach CodeGen's version of computeMaskedBits to understand the range metadata.Rafael Espindola
This is the CodeGen equivalent of r153747. I tested that there is not noticeable performance difference with any combination of -O0/-O2 /-g when compiling gcc as a single compilation unit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153817 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-28More debug output.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153571 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-26Add a debug statement.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153428 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-22Assign node orders to target intrinsics which do not produce results. ↵Evan Cheng
rdar://11096639 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153269 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-15Add another debug statement.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152843 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-11llvm::SwitchInstStepan Dyatkovskiy
Renamed methods caseBegin, caseEnd and caseDefault with case_begin, case_end, and case_default. Added some notes relative to case iterators. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152532 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-08Taken into account Duncan's comments for r149481 dated by 2nd Feb 2012:Stepan Dyatkovskiy
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20120130/136146.html Implemented CaseIterator and it solves almost all described issues: we don't need to mix operand/case/successor indexing anymore. Base iterator class is implemented as a template since it may be initialized either from "const SwitchInst*" or from "SwitchInst*". ConstCaseIt is just a read-only iterator. CaseIt is read-write iterator; it allows to change case successor and case value. Usage of iterator allows totally remove resolveXXXX methods. All indexing convertions done automatically inside the iterator's getters. Main way of iterator usage looks like this: SwitchInst *SI = ... // intialize it somehow for (SwitchInst::CaseIt i = SI->caseBegin(), e = SI->caseEnd(); i != e; ++i) { BasicBlock *BB = i.getCaseSuccessor(); ConstantInt *V = i.getCaseValue(); // Do something. } If you want to convert case number to TerminatorInst successor index, just use getSuccessorIndex iterator's method. If you want initialize iterator from TerminatorInst successor index, use CaseIt::fromSuccessorIndex(...) method. There are also related changes in llvm-clients: klee and clang. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152297 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-05Fix warnings about adding a bool to a string.Bill Wendling
Patch by Sean Silva! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152042 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-01Fix a codegen fault in which log2 or exp2 could be dead-code eliminated even ↵James Molloy
though they could have sideeffects. Only allow log2/exp2 to be converted to an intrinsic if they are declared "readnone". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151807 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-28Re-commit r151623 with fix. Only issue special no-return calls if it's a ↵Evan Cheng
direct call. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151645 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-28Revert r151623 "Some ARM implementaions, e.g. A-series, does return stack ↵Daniel Dunbar
prediction. ...", it is breaking the Clang build during the Compiler-RT part. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151630 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-28Code cleanup following CR by Duncan.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151627 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-28Fix a bug in the code that builds SDNodes from vector GEPs.Nadav Rotem
When the GEP index is a vector of pointers, the code that calculated the size of the element started from the vector type, and not the contained pointer type. As a result, instead of looking at the data element pointed by the vector, this code used the size of the vector. This works for 32bit members (on 32bit systems), but not for other types. Added code to peel the vector type and added a test. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151626 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-28Some ARM implementaions, e.g. A-series, does return stack prediction. That is,Evan Cheng
the processor keeps a return addresses stack (RAS) which stores the address and the instruction execution state of the instruction after a function-call type branch instruction. Calling a "noreturn" function with normal call instructions (e.g. bl) can corrupt RAS and causes 100% return misprediction so LLVM should use a unconditional branch instead. i.e. mov lr, pc b _foo The "mov lr, pc" is issued in order to get proper backtrace. rdar://8979299 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151623 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-24SDAGBuilder: Remove register sets that were never read and prune dead code ↵Benjamin Kramer
surrounding it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151364 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-24Turn avx insert intrinsic calls into INSERT_SUBVECTOR DAG nodes and remove ↵Pete Cooper
duplicate patterns for selecting the intrinsics git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151342 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-24If the Address of a variable is an argument then treat the entireEric Christopher
variable declaration as an argument because we want that address anyhow for our debug information. This seems to fix rdar://9965111, at least we have more debug information than before and from reading the assembly it appears to be the correct location. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151335 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-23Allow an integer to be converted into an MMX type when it's used in an inlineBill Wendling
asm. <rdar://problem/10106006> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151303 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-23More newline cleanups.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151235 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-23Add some handy-dandy newlines.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151234 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-22Properly emit _fltused with FastISel. Refactor to share code with SDAG.Michael J. Spencer
Patch by Joe Groff! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151183 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-14Rename getExceptionAddressRegister() to getExceptionPointerRegister() for ↵Lang Hames
consistency with setExceptionPointerRegister(...). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150460 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-13Don't reserve the R0 and R1 registers here. We don't use these registers, andBill Wendling
marking them as "live-in" into a BB ruins some invariants that the back-end tries to maintain. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150437 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-06[unwind removal] Remove all of the code for the dead 'unwind' instruction. ThereBill Wendling
were no 'unwind' instructions being generated before this, so this is in effect a no-op. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149906 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-01SwitchInst refactoring.Stepan Dyatkovskiy
The purpose of refactoring is to hide operand roles from SwitchInst user (programmer). If you want to play with operands directly, probably you will need lower level methods than SwitchInst ones (TerminatorInst or may be User). After this patch we can reorganize SwitchInst operands and successors as we want. What was done: 1. Changed semantics of index inside the getCaseValue method: getCaseValue(0) means "get first case", not a condition. Use getCondition() if you want to resolve the condition. I propose don't mix SwitchInst case indexing with low level indexing (TI successors indexing, User's operands indexing), since it may be dangerous. 2. By the same reason findCaseValue(ConstantInt*) returns actual number of case value. 0 means first case, not default. If there is no case with given value, ErrorIndex will returned. 3. Added getCaseSuccessor method. I propose to avoid usage of TerminatorInst::getSuccessor if you want to resolve case successor BB. Use getCaseSuccessor instead, since internal SwitchInst organization of operands/successors is hidden and may be changed in any moment. 4. Added resolveSuccessorIndex and resolveCaseIndex. The main purpose of these methods is to see how case successors are really mapped in TerminatorInst. 4.1 "resolveSuccessorIndex" was created if you need to level down from SwitchInst to TerminatorInst. It returns TerminatorInst's successor index for given case successor. 4.2 "resolveCaseIndex" converts low level successors index to case index that curresponds to the given successor. Note: There are also related compatability fix patches for dragonegg, klee, llvm-gcc-4.0, llvm-gcc-4.2, safecode, clang. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149481 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-31Remove the now-dead llvm.eh.exception and llvm.eh.selector intrinsics.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149331 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-27continue making the world safe for ConstantDataVector. At this point,Chris Lattner
we should (theoretically optimize and codegen ConstantDataVector as well as ConstantVector. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149116 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-26eliminate the Constant::getVectorElements method. There are better (andChris Lattner
more robust) ways to do what it was doing now. Also, add static methods for decoding a ShuffleVector mask. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149028 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-25Use the right method to get the # elements in a CDS.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148897 91177308-0d34-0410-b5e6-96231b3b80d8
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