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path: root/lib/Analysis/MemoryBuiltins.cpp
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* MemoryBuiltins:Nuno Lopes2012-06-28
| | | | | | | | - recognize C++ new(std::nothrow) friends - ignore ExtractElement and ExtractValue instructions in size/offset analysis (all easy cases are probably folded away before we get here) - also recognize realloc as noalias git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159356 91177308-0d34-0410-b5e6-96231b3b80d8
* check for the NoAlias attribute through CallSiteNuno Lopes2012-06-25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159145 91177308-0d34-0410-b5e6-96231b3b80d8
* simplify code from previous commits (Thanks Duncan)Nuno Lopes2012-06-22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158999 91177308-0d34-0410-b5e6-96231b3b80d8
* remove extractMallocCallFromBitCast, since it was tailor maded for its sole ↵Nuno Lopes2012-06-22
| | | | | | user. Update GlobalOpt accordingly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158952 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support for invoke to the MemoryBuiltin analysid.Nuno Lopes2012-06-21
| | | | | | | | Update comments accordingly. Make instcombine remove useless invokes to C++'s 'new' allocation function (test attached). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158937 91177308-0d34-0410-b5e6-96231b3b80d8
* fix build in C++11 mode.Nuno Lopes2012-06-21
| | | | | | Thanks to Chandler for pointing out the problem. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158928 91177308-0d34-0410-b5e6-96231b3b80d8
* hopefully fix the buildbots: some tests have wrong definitions of malloc ↵Nuno Lopes2012-06-21
| | | | | | and were crashing this code on 64 bits machines git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158923 91177308-0d34-0410-b5e6-96231b3b80d8
* refactor the MemoryBuiltin analysis:Nuno Lopes2012-06-21
| | | | | | | | | | | | - provide more extensive set of functions to detect library allocation functions (e.g., malloc, calloc, strdup, etc) - provide an API to compute the size and offset of an object pointed by Move a few clients (GVN, AA, instcombine, ...) to the new API. This implementation is a lot more aggressive than each of the custom implementations being replaced. Patch reviewed by Nick Lewycky and Chandler Carruth, thanks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158919 91177308-0d34-0410-b5e6-96231b3b80d8
* remove calls to calloc if the allocated memory is not used (it was already ↵Nuno Lopes2012-05-03
| | | | | | | | being done for malloc) fix a few typos found by Chad in my previous commit git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156110 91177308-0d34-0410-b5e6-96231b3b80d8
* add support for calloc to objectsize loweringNuno Lopes2012-05-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156102 91177308-0d34-0410-b5e6-96231b3b80d8
* Validate the return type when checking if a function is malloc.Benjamin Kramer2011-11-23
| | | | | | Fixes PR11426. Not sure if a test case with a "wrong" malloc would be useful. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145106 91177308-0d34-0410-b5e6-96231b3b80d8
* land David Blaikie's patch to de-constify Type, with a few tweaks.Chris Lattner2011-07-18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135375 91177308-0d34-0410-b5e6-96231b3b80d8
* simplify some code.Chris Lattner2011-06-18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133362 91177308-0d34-0410-b5e6-96231b3b80d8
* Add comments for the demanglings. Correct mangled form of operator delete!Nick Lewycky2011-03-17
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127801 91177308-0d34-0410-b5e6-96231b3b80d8
* Add C++ global operator {new,new[],delete,delete[]}(unsigned {int,long}) to theNick Lewycky2011-03-15
| | | | | | | | | | | | | | | memory builtins as equivalent to malloc/free. This is different from any attribute we have. For example, you can delete the allocators when their result is unused, but you can't collapse two calls to the same function, even if no global/memory state has changed in between. The noalias return states that the result does not alias any other pointer, but instcombine optimizes malloc() as though the result is non-null for the purpose of eliminating unused pointers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127673 91177308-0d34-0410-b5e6-96231b3b80d8
* minor enhancement to llvm::isFreeCall API: return CallInst; no functional changeGabor Greif2010-06-23
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106686 91177308-0d34-0410-b5e6-96231b3b80d8
* use ArgOperand gettersGabor Greif2010-06-23
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106685 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert 101465, it broke internal OpenGL testing.Eric Christopher2010-04-16
| | | | | | | | Probably the best way to know that all getOperand() calls have been handled is to replace that API instead of updating. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101579 91177308-0d34-0410-b5e6-96231b3b80d8
* reapply r101434Gabor Greif2010-04-16
| | | | | | | | | | | | | | with a fix for self-hosting rotate CallInst operands, i.e. move callee to the back of the operand array the motivation for this patch are laid out in my mail to llvm-commits: more efficient access to operands and callee, faster callgraph-construction, smaller compiler binary git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101465 91177308-0d34-0410-b5e6-96231b3b80d8
* back out r101423 and r101397, they break llvm-gcc self-host on darwin10Gabor Greif2010-04-16
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101434 91177308-0d34-0410-b5e6-96231b3b80d8
* reapply r101364, which has been backed out in r101368Gabor Greif2010-04-15
| | | | | | | | | | | | | | with a fix rotate CallInst operands, i.e. move callee to the back of the operand array the motivation for this patch are laid out in my mail to llvm-commits: more efficient access to operands and callee, faster callgraph-construction, smaller compiler binary git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101397 91177308-0d34-0410-b5e6-96231b3b80d8
* back out r101364, as it trips the linux nightlybot on some clang C++ testsGabor Greif2010-04-15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101368 91177308-0d34-0410-b5e6-96231b3b80d8
* rotate CallInst operands, i.e. move callee to the backGabor Greif2010-04-15
| | | | | | | | | | | of the operand array the motivation for this patch are laid out in my mail to llvm-commits: more efficient access to operands and callee, faster callgraph-construction, smaller compiler binary git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101364 91177308-0d34-0410-b5e6-96231b3b80d8
* rename use_const_iterator to const_use_iterator for consistency's sakeGabor Greif2010-03-25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99564 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix "the the" and similar typos.Dan Gohman2010-02-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95781 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify ComputeMultiple so that it doesn't depend on TargetData.Dan Gohman2009-11-18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89175 91177308-0d34-0410-b5e6-96231b3b80d8
* Update computeArraySize() to use ComputeMultiple() to determine the array ↵Victor Hernandez2009-11-10
| | | | | | 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
* Re-commit r86077 now that r86290 fixes the 179.art and 175.vpr ARM regressions.Victor Hernandez2009-11-07
| | | | | | | | | | | | | | | | | | | | | | | | | 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
* remove a bunch of extraneous LLVMContext argumentsChris Lattner2009-11-06
| | | | | | | from various APIs, addressing PR5325. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86231 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r86077 because it caused crashes in 179.art and 175.vpr on ARMVictor Hernandez2009-11-06
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86213 91177308-0d34-0410-b5e6-96231b3b80d8
* Update CreateMalloc so that its callers specify the size to allocate:Victor Hernandez2009-11-05
| | | | | | | | | | | | | | | | | | | 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
* Changes requested (avoid getFunction(), avoid Type creation via isVoidTy(), ↵Victor Hernandez2009-11-03
| | | | | | and avoid redundant isFreeCall cases) in feedback to r85176 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85936 91177308-0d34-0410-b5e6-96231b3b80d8
* Changes (* location in pointer variables, avoiding include, and using ↵Victor Hernandez2009-11-03
| | | | | | APInt::getLimitedValue) based on feedback to r85814 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85933 91177308-0d34-0410-b5e6-96231b3b80d8
* Set bit instead of calling pow() to compute 2 << nVictor Hernandez2009-11-02
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85814 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix for warning seen on DF-BSD, Victor, please fix this to use a shift ↵Edward O'Callaghan2009-11-02
| | | | | | instead of pow() git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85781 91177308-0d34-0410-b5e6-96231b3b80d8
* fix 80-col.Zhongxing Xu2009-10-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85480 91177308-0d34-0410-b5e6-96231b3b80d8
* Explicitly convert to double to suppress Visual C++ 2008 build error C2668 ↵Zhongxing Xu2009-10-29
| | | | | | pow is ambiguous call to overloaded function git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85478 91177308-0d34-0410-b5e6-96231b3b80d8
* Extend getMallocArraySize() to determine the array size if the malloc ↵Victor Hernandez2009-10-28
| | | | | | | | | | | | | | | | 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
* Rename MallocFreeHelper as MemoryBuiltinsVictor Hernandez2009-10-27
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85286 91177308-0d34-0410-b5e6-96231b3b80d8
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