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2009-10-29teach various passes about blockaddress. We no longerChris Lattner
crash on any clang tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85465 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-29teach ValueMapper about BlockAddress', making bugpoint a lot more useful.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85458 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-29unindent massive blocks, no functionality change.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85457 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28Extend getMallocArraySize() to determine the array size if the malloc ↵Victor Hernandez
argument is: ArraySize * ElementSize ElementSize * ArraySize ArraySize << log2(ElementSize) ElementSize << log2(ArraySize) Refactor isArrayMallocHelper and delete isSafeToGetMallocArraySize, so that there is only 1 copy of the malloc array determining logic. Update users of getMallocArraySize() to not bother calling isArrayMalloc() as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85421 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28llvm.dbg.global_variables do not exist anymore.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85402 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28No newline at end of file.Edward O'Callaghan
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85390 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28Update CMake file.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85389 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28Treat lifetime begin/end markers as allocations/frees respectively for theOwen Anderson
purposes for GVN/DSE. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85383 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28Add ABCD, a generalized implementation of the Elimination of Array BoundsNick Lewycky
Checks on Demand algorithm which looks at arbitrary branches instead of loop iterations. This is GSoC work by Andre Tavares with only editorial changes applied! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85382 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28Previously, all operands to Constant were themselves constant.Chris Lattner
In the new world order, BlockAddress can have a BasicBlock operand. This doesn't permute much, because if you have a ConstantExpr (or anything more specific than Constant) we still know the operand has to be a Constant. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85375 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-27Factor out redundancy from clone() implementations.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85327 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-27Rename MallocFreeHelper as MemoryBuiltinsVictor Hernandez
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85286 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-27Fix a pretty serious misfeature of the inliner: if it inlines a functionChris Lattner
with multiple return values it inserts a PHI to merge them all together. However, if the return values are all the same, it ends up with a pointless PHI and this pointless PHI happens to really block SRoA from happening in at least a silly C++ example written by Doug, but probably others. This fixes rdar://7339069. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85206 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-27VS build fix, patch by Marius Wachtler.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85197 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-27Add objectsize intrinsic and hook it up through codegen. Doesn'tEric Christopher
do anything than return "I don't know" at the moment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85189 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-27Add braces to avoid ambiguous else.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85185 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26Rename MallocHelper as MallocFreeHelper, since it now also identifies calls ↵Victor Hernandez
to free() git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85181 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26Add a straight-forward implementation of SCCVN for aggressively eliminating ↵Owen Anderson
scalar redundancies. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85179 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26Remove FreeInst.Victor Hernandez
Remove LowerAllocations pass. Update some more passes to treate free calls just like they were treating FreeInst. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85176 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26Simplify this code. LoopDeletion doesn't need to explicit check thatDan Gohman
the loop exiting block dominates the latch block; if ScalarEvolution can prove that the trip-count is finite, that's sufficient. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85165 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26Code that checks WillNotOverflowSignedAdd before creating an AddDan Gohman
can safely use the NSW bit on the Add. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85164 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26Update CMake files.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85161 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26Check in the experimental GEP splitter pass. This pass splits complexDan Gohman
GEPs (more than one non-zero index) into simple GEPs (at most one non-zero index). In some simple experiments using this it's not uncommon to see 3% overall code size wins, because it exposes redundancies that can be eliminated, however it's tricky to use because instcombine aggressively undoes the work that this pass does. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85144 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26Fix a typo in a comment.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85120 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26reapply r85085 with a bugfix to avoid infinite looping.Chris Lattner
All of the 'demorgan' related xforms need to use dyn_castNotVal, not m_Not. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85119 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26Make LSR's OptimizeShadowIV ignore induction variables with negativeDan Gohman
strides for now, because it doesn't handle them correctly. This fixes a miscompile of SingleSource/Benchmarks/Misc-C++/ray. This problem was usually hidden because indvars transforms such induction variables into negations of canonical induction variables. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85118 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26Revert 85085. It causes infinite looping during llvm-gcc build.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85090 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26Implement PR3266 & PR5276, folding:Chris Lattner
not (or (icmp, icmp)) -> and(icmp, icmp) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85085 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-25Remove includes of Support/Compiler.h that are no longer needed after theNick Lewycky
VISIBILITY_HIDDEN removal. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85043 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-25Remove VISIBILITY_HIDDEN from class/struct found inside anonymous namespaces.Nick Lewycky
Chris claims we should never have visibility_hidden inside any .cpp file but that's still not true even after this commit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85042 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-25Remove ICmpInst::isSignedPredicate which was a reimplementationNick Lewycky
CmpInst::isSigned. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85037 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-24MapValue doesn't needs its LLVMContext argument.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85020 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-24Rename isLoopExit to isLoopExiting, for consistency with the wordingDan Gohman
used elsewhere - an exit block is a block outside the loop branched to from within the loop. An exiting block is a block inside the loop that branches out. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85019 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-24Rewrite LoopRotation's SSA updating code using SSAUpdater.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85016 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-24Auto-upgrade free instructions to calls to the builtin free function.Victor Hernandez
Update all analysis passes and transforms to treat free calls just like FreeInst. Remove RaiseAllocations and all its tests since FreeInst no longer needs to be raised. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84987 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-23Remove AllocationInst. Since MallocInst went away, AllocaInst is the only ↵Victor Hernandez
subclass of AllocationInst, so it no longer is necessary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84969 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-23Make LoopDeletion check the maximum backedge taken count, rather than theDan Gohman
exact backedge taken count, when checking for infinite loops. This allows it to delete loops with multiple exit conditions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84952 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-22move another load optimization from instcombine -> libanalysis.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84841 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-22move 'loading i32 from string' optimization from instcombineChris Lattner
to libanalysis. Instcombine shrinking... does this even make sense??? git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84840 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-22Move some constant folding logic for loads out of instcombine intoChris Lattner
Analysis/ConstantFolding.cpp. This doesn't change the behavior of instcombine but makes other clients of ConstantFoldInstruction able to handle loads. This was partially extracted from Eli's patch in PR3152. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84836 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-22fix PR5262.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84810 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-21Derive metadata hierarchy from Value instead of User.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84801 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-21revert r84754, it isn't the right approach. Edwin, please propose Chris Lattner
patches for fixes like this instead of committing them directly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84799 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-21Make changes to rev 84292 as requested by Chris Lattner.Victor Hernandez
Most changes are cleanup, but there is 1 correctness fix: I fixed InstCombine so that the icmp is removed only if the malloc call is removed (which requires explicit removal because the Worklist won't DCE any calls since they can have side-effects). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84772 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-21Fix PR5262: when folding select into PHI, make sure all operands are availableTorok Edwin
in the PHI's Basic Block. This uses a conservative approach, because we don't have dominator info in instcombine. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84754 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-21make GVN work better when TD is not around:Chris Lattner
"In the existing code, if the load and the value to replace it with are of different types *and* target data is available, it tries to use the target data to coerce the replacement value to the type of the load. Otherwise, it skips all effort to handle the type mismatch and just feeds the wrongly-typed replacement value to replaceAllUsesWith, which triggers an assertion. The patch replaces it with an outer if checking for type mismatch, and an inner if-else that checks whether target data is available and, if not, returns false rather than trying to replace the load." Patch by Kenneth Uildriks! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84739 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-21Do not remove dead metadata for now.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84731 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-20alternate fix for PR5258 which avoids worklist problems, with reduced testcase.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84667 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-20Restore LoopUnswitch's block-oriented threshold. LoopUnswitch now checks bothDan Gohman
the estimated code size and the number of blocks when deciding whether to do a non-trivial unswitch. This protects it from some very undesirable worst-case behavior on large numbers of loop-unswitchable conditions, such as in the testcase in PR5259. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84661 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-20Fix PR5258, jump-threading creating invalid PHIs.Torok Edwin
When an incoming value for a PHI is updated, we must also updated all other incoming values for the same BB to match, otherwise we create invalid PHIs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84638 91177308-0d34-0410-b5e6-96231b3b80d8
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