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2009-11-23Make ConstantFoldConstantExpression recursively visit the entireDan Gohman
ConstantExpr, not just the top-level operator. This allows it to fold many more constants. Also, make GlobalOpt call ConstantFoldConstantExpression on GlobalVariable initializers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89659 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23Remove unused LLVMContext.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89642 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-19Extend CaptureTracking to indicate when a value is never stored, evenDan Gohman
if it is not ultimately captured. Teach BasicAliasAnalysis that a local object address which does not escape and is never stored does not alias with a value resulting from a load. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89398 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-17Remove debug info attached with an instruction.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89016 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-12use isInstructionTriviallyDead, as pointed out by DuncanChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87035 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-12implement a nice little efficiency hack in the inliner. Since we're nowChris Lattner
running IPSCCP early, and we run functionattrs interlaced with the inliner, we often (particularly for small or noop functions) completely propagate all of the information about a call to its call site in IPSSCP (making a call dead) and functionattrs is smart enough to realize that the function is readonly (because it is interlaced with inliner). To improve compile time and make the inliner threshold more accurate, realize that we don't have to inline dead readonly function calls. Instead, just delete the call. This happens all the time for C++ codes, here are some counters from opt/llvm-ld counting the number of times calls were deleted vs inlined on various apps: Tramp3d opt: 5033 inline - Number of call sites deleted, not inlined 24596 inline - Number of functions inlined llvm-ld: 667 inline - Number of functions deleted because all callers found 699 inline - Number of functions inlined 483.xalancbmk opt: 8096 inline - Number of call sites deleted, not inlined 62528 inline - Number of functions inlined llvm-ld: 217 inline - Number of allocas merged together 2158 inline - Number of functions inlined 471.omnetpp: 331 inline - Number of call sites deleted, not inlined 8981 inline - Number of functions inlined llvm-ld: 171 inline - Number of functions deleted because all callers found 629 inline - Number of functions inlined Deleting a call is much faster than inlining it, and is insensitive to the size of the callee. :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86975 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-10Update computeArraySize() to use ComputeMultiple() to determine the array ↵Victor Hernandez
size associated with a malloc; also extend PerformHeapAllocSRoA() to check if the optimized malloc's arg had its highest bit set, so that it is safe for ComputeMultiple() to look through sext instructions while determining the optimized malloc's array size git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86676 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-07- new SROA mallocs should have the mallocs running-or'ed, not the malloc's ↵Victor Hernandez
bitcast - fix ProcessInternalGlobal() debug output git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86317 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-07Re-commit r86077 now that r86290 fixes the 179.art and 175.vpr ARM regressions.Victor Hernandez
Here is the original commit message: This commit updates malloc optimizations to operate on malloc calls that have constant int size arguments. Update CreateMalloc so that its callers specify the size to allocate: MallocInst-autoupgrade users use non-TargetData-computed allocation sizes. Optimization uses use TargetData to compute the allocation size. Now that malloc calls can have constant sizes, update isArrayMallocHelper() to use TargetData to determine the size of the malloced type and the size of malloced arrays. Extend getMallocType() to support malloc calls that have non-bitcast uses. Update OptimizeGlobalAddressOfMalloc() to optimize malloc calls that have non-bitcast uses. The bitcast use of a malloc call has to be treated specially here because the uses of the bitcast need to be replaced and the bitcast needs to be erased (just like the malloc call) for OptimizeGlobalAddressOfMalloc() to work correctly. Update PerformHeapAllocSRoA() to optimize malloc calls that have non-bitcast uses. The bitcast use of the malloc is not handled specially here because ReplaceUsesOfMallocWithGlobal replaces through the bitcast use. Update OptimizeOnceStoredGlobal() to not care about the malloc calls' bitcast use. Update all globalopt malloc tests to not rely on autoupgraded-MallocInsts, but instead use explicit malloc calls with correct allocation sizes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86311 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-06remove a bunch of extraneous LLVMContext argumentsChris Lattner
from various APIs, addressing PR5325. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86231 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-06Revert r86077 because it caused crashes in 179.art and 175.vpr on ARMVictor Hernandez
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86213 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-05Update various Loop optimization passes to cope with the possibility thatDan Gohman
LoopSimplify form may not be available. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86175 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-05Update CreateMalloc so that its callers specify the size to allocate:Victor Hernandez
MallocInst-autoupgrade users use non-TargetData-computed allocation sizes. Optimization uses use TargetData to compute the allocation size. Now that malloc calls can have constant sizes, update isArrayMallocHelper() to use TargetData to determine the size of the malloced type and the size of malloced arrays. Extend getMallocType() to support malloc calls that have non-bitcast uses. Update OptimizeGlobalAddressOfMalloc() to optimize malloc calls that have non-bitcast uses. The bitcast use of a malloc call has to be treated specially here because the uses of the bitcast need to be replaced and the bitcast needs to be erased (just like the malloc call) for OptimizeGlobalAddressOfMalloc() to work correctly. Update PerformHeapAllocSRoA() to optimize malloc calls that have non-bitcast uses. The bitcast use of the malloc is not handled specially here because ReplaceUsesOfMallocWithGlobal replaces through the bitcast use. Update OptimizeOnceStoredGlobal() to not care about the malloc calls' bitcast use. Update all globalopt malloc tests to not rely on autoupgraded-MallocInsts, but instead use explicit malloc calls with correct allocation sizes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86077 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-03Eliminate some temporaries.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85896 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01cleanups, switch GlobalDCE to SmallPtrSet instead of std::setChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85730 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01Reverting 85714, 85715, 85716, which are breaking the buildDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85717 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01Remove the #include of Pass.h from PassManager.h. This breaks a significantDan Gohman
#include dependency, as frontends commonly pull in PassManager.h. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85714 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01teach ipsccp and ipconstprop that a blockaddress doesn't 'take the address' ↵Chris Lattner
of a function in a way that should prevent ip constprop. This allows clang/test/CodeGen/indirect-goto.c to pass with the new indirect goto lowering. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85709 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01Revert 85678/85680. The decision is to stay with the current form of Chris Lattner
indirectbr, thus we don't need "blockaddr(@func, null)". Eliminate it for simplicity. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85699 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-31adjust a couple xforms to work with null bb's in BlockAddress.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85680 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-29just for the hell of it, allow globalopt to statically evaluate Chris Lattner
static constructors with indirect gotos :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85495 91177308-0d34-0410-b5e6-96231b3b80d8
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
2009-10-28Extend 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
2009-10-28Previously, 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
2009-10-27Rename MallocFreeHelper as MemoryBuiltinsVictor Hernandez
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85286 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
2009-10-25Remove 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
2009-10-24Auto-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
2009-10-21Derive 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
2009-10-21Do 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
2009-10-19Malloc calls are marked NoAlias, so the code below the isMalloc() check ↵Victor Hernandez
makes it redundant. Removing the isMalloc() check. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84541 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-18remove the IndMemRemPass, which only made sense for when malloc/free were ↵Chris Lattner
intrinsic instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84404 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-17Remove MallocInst from LLVM Instructions.Victor Hernandez
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84299 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-17Autoupgrade malloc insts to malloc calls.Victor Hernandez
Update testcases that rely on malloc insts being present. Also prematurely remove MallocInst handling from IndMemRemoval and RaiseAllocations to help pass tests in this incremental step. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84292 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-16HeapAllocSRoA also needs to check if malloc array size can be computed.Victor Hernandez
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84288 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-15Fix bug where array malloc with unexpected computation of the size argument ↵Victor Hernandez
resulted in MallocHelper identifying the malloc as a non-array malloc. This broke GlobalOpt's optimization of stores of mallocs to global variables. The fix is to classify malloc's into 3 categories: 1. non-array mallocs 2. array mallocs whose array size can be determined 3. mallocs that cannot be determined to be of type 1 or 2 and cannot be optimized getMallocArraySize() returns NULL for category 3, and all users of this function must avoid their malloc optimization if this function returns NULL. Eventually, currently unexpected codegen for computing the malloc's size argument will be supported in isArrayMalloc() and getMallocArraySize(), extending malloc optimizations to those examples. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84199 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-13Move the InlineCost code from Transforms/Utils to Analysis.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83998 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-09Use names instead of numbers for some of the magicDale Johannesen
constants used in inlining heuristics (especially those used in more than one file). No functional change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83675 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-09When considering whether to inline Callee into Caller,Dale Johannesen
and that will make Caller too big to inline, see if it might be better to inline Caller into its callers instead. This situation is described in PR 2973, although I haven't tried the specific case in SPASS. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83602 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-06Introduce and use convenience methods for getting pointer typesDuncan Sands
where the element is of a basic builtin type. For example, to get an i8* use getInt8PtrTy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83379 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-05Remove an unnnecessary LLVMContext argument inDan Gohman
ConstantFoldLoadThroughGEPConstantExpr. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83311 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-04Allow -inline-threshold override default threshold even if compiling to ↵Evan Cheng
optimize for size. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83274 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-28Convert LoopSimplify and LoopExtractor from FunctionPass to LoopPass.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82990 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-27remove special handling of bitcast(malloc), it will be handledChris Lattner
when the loop inspects the bitcast operand. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82928 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-27unlike the malloc instruction, "malloc" calls do not claim to be readonly, ↵Chris Lattner
just nounwind. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82927 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-24Constant propagating byval pointer is safe if function is readonly.Torok Edwin
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82700 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-24Don't constant propagate byval pointers, since they are not really pointers, butTorok Edwin
rather structs passed by value. This fixes PR5038. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82689 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-20Tabs -> spaces, and remove trailing whitespace.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82355 91177308-0d34-0410-b5e6-96231b3b80d8
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