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2009-10-23teach libanalysis to simplify vector loads with bitcast sources. ThisChris Lattner
implements something out of Target/README.txt producing: _foo: ## @foo movl 4(%esp), %eax movapd LCPI1_0, %xmm0 movapd %xmm0, (%eax) ret $4 instead of: _foo: ## @foo movl 4(%esp), %eax movapd _b, %xmm0 mulpd LCPI1_0, %xmm0 addpd _a, %xmm0 movapd %xmm0, (%eax) ret $4 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84942 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-23enhance FoldReinterpretLoadFromConstPtr to handle loads of up to 32 Chris Lattner
bytes (i256). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84941 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-23teach libanalysis to fold int and fp loads from almost arbitraryChris Lattner
non-type-safe constant initializers. This sort of thing happens quite a bit for 4-byte loads out of string constants, unions, bitfields, and an interesting endianness check from sqlite, which is something like this: const int sqlite3one = 1; # define SQLITE_BIGENDIAN (*(char *)(&sqlite3one)==0) # define SQLITE_LITTLEENDIAN (*(char *)(&sqlite3one)==1) # define SQLITE_UTF16NATIVE (SQLITE_BIGENDIAN?SQLITE_UTF16BE:SQLITE_UTF16LE) all of these macros now constant fold away. This implements PR3152 and is based on a patch started by Eli, but heavily modified and extended. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84936 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
2009-10-20Fix another place that calls Loop::contains a lot to construct a sortedDan Gohman
container of the blocks and do efficient lookups. This makes isLoopSimplifyForm much faster on large loops, fixing a significant compile-time issue in builds with assertions enabled. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84673 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-18fix the other issue with ID's, hopefully really fixing the linux build.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84403 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-18fix some problems with ID definitions, which will hopefully fix the build bots.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84399 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-18add function passes for printing various dominator datastructuresChris Lattner
accessible through opt. Patch by Tobias Grosser! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84397 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-18make DOTGraphTraits public, patch by Tobias Grosser!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84396 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-17inline isGEP away.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84373 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
2009-10-16Invert isSafeToGetMallocArraySize check because we return NULL when we don't ↵Victor Hernandez
know the size. Thanks to Duncan Sands for noticing this bug. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84261 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-16When checking aliases between phi sources and V2, we know the sources are ↵Evan Cheng
not themselves phi nodes. However, V2 may be. Call aliasCheck with V2 first to potentially eliminate a std::swap call. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84226 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
2009-10-15Add missing break statements! Thanks to Duncan Sands for pointing this out!Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84191 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-15Teach basicaa about memcpy/memmove/memset. The length argument can be used toNick Lewycky
improve alias results if constant, and the source pointer can't be modified. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84175 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-15Teach BasicAA to use the size parameter of the memory use marker intrinsics.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84174 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-15Take advantage of TargetData when available; we know that the atomic intrinsicsNick Lewycky
only dereference the element they point to directly with no pointer arithmetic. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84159 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-14Clear VisitedPHIs after use.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84080 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-14Another BasicAA fix. If a value does not alias a GEP's base pointer, then itEvan Cheng
cannot alias the GEP. GEP pointer alias rule states this clearly: A pointer value formed from a getelementptr instruction is associated with the addresses associated with the first operand of the getelementptr. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84079 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-14More code clean up based on patch feedback.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84074 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-14Change VisitedPHIs into an instance variable that's freed by each alias() call.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84072 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-13Teach basic AA about PHI nodes. If all operands of a phi NoAlias another ↵Evan Cheng
value than it's safe to declare the PHI NoAlias the value. Ditto for MustAlias. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84038 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-13Compute a full cost value even when a setjmp call is found.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84015 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-13Split code not specific to Function inlining out into a separate class,Dan Gohman
named CodeMetrics. Move it to be a non-nested class. Rename RegionInfo back to FunctionInfo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84013 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-13Update the other CMake file.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84003 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-13Refactor some code. No functionality changes.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84000 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
2009-10-13"there is not any instruction with attached debug info in this module" does ↵Devang Patel
not mean "there is no debug info in this module". :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83984 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-13Teach BasicAA a little something about the atomic intrinsics: they can onlyNick Lewycky
modify through the pointer they're given. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83959 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-13Memory dependence analysis was incorrectly stopping to scan for stores to a ↵Victor Hernandez
pointer at bitcast uses of a malloc call. It should continue scanning until the malloc call, and this patch fixes that. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83931 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-09Revert r83606 and add comments explaining why it isn't safe.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83649 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-09Preserve HasNSW and HasNUW when constructing SCEVs for Add and MulDan Gohman
instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83606 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-09Add the ability to track HasNSW and HasNUW on more kinds of SCEV expressions.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83601 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-08Update CMake build yet again after a source file was removedDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83575 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-08It's possible for a global variable to be optimized out of a metadata object. SoBill Wendling
we should allow a "null" with this dyn_cast. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83573 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-08remove LoopVR pass. According to Nick:Chris Lattner
"LoopVR's logic was copied into ScalarEvolution::getUnsignedRange and ::getSignedRange. Please delete LoopVR." git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83531 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-07Extract subprogram and compile unit information from the debug info attached ↵Devang Patel
to an instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83491 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-07Add PR to this FIXME, looks like I didn't commit this change after all.Torok Edwin
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83457 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
2009-10-05Extend ConstantFolding to understand signed overflow variantsEvan Phoenix
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83338 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-05Don't treat malloc calls with non-matching prototype as malloc.Torok Edwin
Fixes second part of PR5130, miscompilation in FreeBSD kernel, where malloc takes 3 params, and *does* initialize memory. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83324 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
2009-10-05teach the optimizer how to constant fold uadd/usub intrinsics.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83295 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-05simplify this code a bunch.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83294 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-05code simplifications.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83292 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-01Expand api out in the usual inserter way, though, I do have aMike Stump
question, can we get rid of the BasicBlock versions of all inserters and use Head == 0 to indicate the old case when GetInsertBlock == 0? git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83216 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-01Add another MDNode into DebugLocTuple. This will be used to keep track of ↵Devang Patel
inlined functions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83190 91177308-0d34-0410-b5e6-96231b3b80d8
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