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path: root/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
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2012-05-01Merging r155954:Bill Wendling
------------------------------------------------------------------------ r155954 | void | 2012-05-01 15:50:45 -0700 (Tue, 01 May 2012) | 3 lines Strip the pointer casts off of allocas so that the selection DAG can find them. PR10799 ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_31@155955 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
2012-01-24add more support for ConstantDataSequentialChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148802 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-20More dead code removal (using -Wunreachable-code)David Blaikie
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148578 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-17Changed flag operand of ISD::FP_ROUND to TargetConstant as it should not get ↵Pete Cooper
checked for legalisation git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148275 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-16Changed intrinsic ID operand to a target constant as its not used in any ↵Pete Cooper
arithmetic so should not be checked in legalisation git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148228 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-04Allow vector shuffle normalizing to use concat vector even if the sources ↵Craig Topper
are commuted in the shuffle mask. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147527 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-03Turn a few more inline asm errors into "emitErrors" instead of fatal errors.Chris Lattner
Before we'd get: $ clang t.c fatal error: error in backend: Invalid operand for inline asm constraint 'i'! Now we get: $ clang t.c t.c:16:5: error: invalid operand for inline asm constraint 'i'! "movq (%4), %%mm0\n" ^ Which at least gets us the inline asm that is the problem. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147502 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-03Remove the restriction that target intrinsics can only involve legal types. ↵Owen Anderson
Targets can perfects well support intrinsics on illegal types, as long as they are prepared to perform custom expansion during type legalization. For example, a target where i64 is illegal might still support the i64 intrinsic operation using pairs of i32's. ARM already does some expansions like this for non-intrinsic operations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147472 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-20Add some constantness to BranchProbabilityInfo and BlockFrequnencyInfo.Jakub Staszak
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146986 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-15Enable synthesis of FLOG2 and FEXP2 SelectionDAG nodes from libm calls. ↵Owen Anderson
These are already marked as illegal by default. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146623 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-13Initial CodeGen support for CTTZ/CTLZ where a zero input produces anChandler Carruth
undefined result. This adds new ISD nodes for the new semantics, selecting them when the LLVM intrinsic indicates that the undef behavior is desired. The new nodes expand trivially to the old nodes, so targets don't actually need to do anything to support these new nodes besides indicating that they should be expanded. I've done this for all the operand types that I could figure out for all the targets. Owners of various targets, please review and let me know if any of these are incorrect. Note that the expand behavior is *conservatively correct*, and exactly matches LLVM's current behavior with these operations. Ideally this patch will not change behavior in any way. For example the regtest suite finds the exact same instruction sequences coming out of the code generator. That's why there are no new tests here -- all of this is being exercised by the existing test suite. Thanks to Duncan Sands for reviewing the various bits of this patch and helping me get the wrinkles ironed out with expanding for each target. Also thanks to Chris for clarifying through all the discussions that this is indeed the approach he was looking for. That said, there are likely still rough spots. Further review much appreciated. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146466 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-08Enhance both TargetLibraryInfo and SelectionDAGBuilder so that the latter ↵Owen Anderson
can use the former to prevent the formation of libm SDNode's when -fno-builtin is passed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146193 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-08Teach SelectionDAG to match more calls to libm functions onto existing ↵Owen Anderson
SDNodes. Mark these nodes as illegal by default, unless the target declares otherwise. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146171 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-05Add support for vectors of pointers.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145801 91177308-0d34-0410-b5e6-96231b3b80d8
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