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2012-07-03Part of r159527. Splitted into series of patches and gone with fixed PR13256:Stepan Dyatkovskiy
IntegersSubsetMapping - Replaced type of Items field from std::list with std::map. In neares future I'll test it with DenseMap and do the correspond replacement if possible. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159659 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-02Revert "IntRange:" as it appears to be breaking self hosting.Eric Christopher
This reverts commit b2833d9dcba88c6f0520cad760619200adc0442c. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159618 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-02GlobalOpt forgot to handle bitcast when analyzing globals. Found by inspection.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159546 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-02fix the regression I introduced in r159385 (it's necessary to update PHI ↵Nuno Lopes
nodes in unwind BB git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159534 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-02IntRange:Stepan Dyatkovskiy
- Changed isSingleNumber method behaviour. Now this flag is calculated on demand. IntegersSubsetMapping - Optimized diff operation. - Replaced type of Items field from std::list with std::map. - Added new methods: bool isOverlapped(self &RHS) void add(self& RHS, SuccessorClass *S) void detachCase(self& NewMapping, SuccessorClass *Succ) void removeCase(SuccessorClass *Succ) SuccessorClass *findSuccessor(const IntTy& Val) const IntTy* getCaseSingleNumber(SuccessorClass *Succ) IntegersSubsetTest - DiffTest: Added checks for successors. SimplifyCFG Updated SwitchInst usage (now it is case-ragnes compatible) for - SimplifyEqualityComparisonWithOnlyPredecessor - FoldValueComparisonIntoPredecessors git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159527 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-02[asan] small code simplificationKostya Serebryany
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159522 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-30Don't reinsert the 'atexit' function if it already exists.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159491 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-29revert r159440. As Duncan pointed out, the test for invoke is not needed at ↵Nuno Lopes
this point git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159471 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-29CodeGenPrepare: Don't crash when TLI is not available.Benjamin Kramer
This happens when codegenprepare is invoked via opt. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159457 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-29Rework this to clarify where the removal of nodes from the queue isDuncan Sands
really happening. No intended functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159451 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-29ignore 'invoke new' in isInstructionTriviallyDead, since most callers are ↵Nuno Lopes
not ready to handle invokes. instcombine will take care of this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159440 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-29Fix a reassociate crash on sozefx when compiling with dragonegg+gcc-4.7 due toDuncan Sands
the optimizers producing a multiply expression with more multiplications than the original (!). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159426 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-29Move llvm/Support/IRBuilder.h -> llvm/IRBuilder.hChandler Carruth
This was always part of the VMCore library out of necessity -- it deals entirely in the IR. The .cpp file in fact was already part of the VMCore library. This is just a mechanical move. I've tried to go through and re-apply the coding standard's preferred header sort, but at 40-ish files, I may have gotten some wrong. Please let me know if so. I'll be committing the corresponding updates to Clang and Polly, and Duncan has DragonEgg. Thanks to Bill and Eric for giving the green light for this bit of cleanup. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159421 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-29The DIBuilder class is just a wrapper around debug info creationBill Wendling
(a.k.a. MDNodes). The module doesn't belong in Analysis. Move it to the VMCore instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159414 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-28make simplifyCFG erase invokes to readonly/readnone functionsNuno Lopes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159385 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-28make instcombine produce calls to llvm.donothing instead of a random intrinsicNuno Lopes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159384 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-28[asan] set a hard limit on the number of instructions instrumented pear each ↵Kostya Serebryany
BB. This is (hopefully temporary) workaround for PR13225 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159344 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-28Precompute SCEV pointer analysis prior to instruction fusion in BBVectorize.Hal Finkel
When both a load/store and its address computation are being vectorized, it can happen that the address-computation vectorization destroys SCEV's ability to analyize the relative pointer offsets. As a result (like with the aliasing analysis info), we need to precompute the necessary information prior to instruction fusing. This was found during stress testing (running through the test suite with a very low required chain length); unfortunately, I don't have a small test case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159332 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-28Remove a useless check in BBVectorize.Hal Finkel
A shuffle mask will always be a constant, but I did not realize that when I originally wrote the code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159331 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-28Allow BBVectorize to form non-2^n-length vectors.Hal Finkel
The original algorithm only used recursive pair fusion of equal-length types. This is now extended to allow pairing of any types that share the same underlying scalar type. Because we would still generally prefer the 2^n-length types, those are formed first. Then a second set of iterations form the non-2^n-length types. Also, a call to SimplifyInstructionsInBlock has been added after each pairing iteration. This takes care of DCE (and a few other things) that make the following iterations execute somewhat faster. For the same reason, some of the simple shuffle-combination cases are now handled internally. There is some additional refactoring work to be done, but I've had many requests for this feature, so additional refactoring will come soon in future commits (as will additional test cases). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159330 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-28Refactor operation equivalence checking in BBVectorize by extending ↵Hal Finkel
Instruction::isSameOperationAs. Maintaining this kind of checking in different places is dangerous, extending Instruction::isSameOperationAs consolidates this logic into one place. Here I've added an optional flags parameter and two flags that are important for vectorization: CompareIgnoringAlignment and CompareUsingScalarTypes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159329 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-28Move lib/Analysis/DebugInfo.cpp to lib/VMCore/DebugInfo.cpp andBill Wendling
include/llvm/Analysis/DebugInfo.h to include/llvm/DebugInfo.h. The reasoning is because the DebugInfo module is simply an interface to the debug info MDNodes and has nothing to do with analysis. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159312 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-27Revert r159136 due to PR13124.Matt Beaumont-Gay
Original commit message: If a constant or a function has linkonce_odr linkage and unnamed_addr, mark it hidden. Being linkonce_odr guarantees that it is available in every dso that needs it. Being a constant/function with unnamed_addr guarantees that the copies don't have to be merged. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159272 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-27Some reassociate optimizations create new instructions, which they insert justDuncan Sands
before the expression root. Any existing operators that are changed to use one of them needs to be moved between it and the expression root, and recursively for the operators using that one. When I rewrote RewriteExprTree I accidentally inverted the logic, resulting in the compacting going down from operators to operands rather than up from operands to the operators using them, oops. Fix this, resolving PR12963. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159265 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Remove a instcombine transform that (no longer?) makes sense:Evan Cheng
// C - zext(bool) -> bool ? C - 1 : C if (ZExtInst *ZI = dyn_cast<ZExtInst>(Op1)) if (ZI->getSrcTy()->isIntegerTy(1)) return SelectInst::Create(ZI->getOperand(0), SubOne(C), C); This ends up forming sext i1 instructions that codegen to terrible code. e.g. int blah(_Bool x, _Bool y) { return (x - y) + 1; } => movzbl %dil, %eax movzbl %sil, %ecx shll $31, %ecx sarl $31, %ecx leal 1(%rax,%rcx), %eax ret Without the rule, llvm now generates: movzbl %sil, %ecx movzbl %dil, %eax incl %eax subl %ecx, %eax ret It also helps with ARM (and pretty much any target that doesn't have a sext i1 :-). The transformation was done as part of Eli's r75531. He has given the ok to remove it. rdar://11748024 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159230 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Replacing zero-sized alloca's with a null pointer is too aggressive, insteadDuncan Sands
merge all zero-sized alloca's into one, fixing c43204g from the Ada ACATS conformance testsuite. What happened there was that a variable sized object was being allocated on the stack, "alloca i8, i32 %size". It was then being passed to another function, which tested that the address was not null (raising an exception if it was) then manipulated %size bytes in it (load and/or store). The optimizers cleverly managed to deduce that %size was zero (congratulations to them, as it isn't at all obvious), which made the alloca zero size, causing the optimizers to replace it with null, which then caused the check mentioned above to fail, and the exception to be raised, wrongly. Note that no loads and stores were actually being done to the alloca (the loop that does them is executed %size times, i.e. is not executed), only the not-null address check. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159202 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25revert my previous commit (r159173), since as Eli pointed out, it's ↵Nuno Lopes
perfectly ok to mark realloc as noalias git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159175 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25do not set realloc() as NotAlias, since it can return the same pointer. This ↵Nuno Lopes
whole thing should be upgraded to use the MemoryBuiltin interface anyway.. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159173 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25Fix the objc_autoreleasedReturnValue optimization code to locateDan Gohman
the call correctly even in the case where it is an invoke. This fixes rdar://11714057. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159157 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25improve optimization of invoke instructions:Nuno Lopes
- simplifycfg: invoke undef/null -> unreachable - instcombine: invoke new -> invoke expect(0, 0) (an arbitrary NOOP intrinsic; only done if the allocated memory is unused, of course) - verifier: allow invoke of intrinsics (to make the previous step work) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159146 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25If a constant or a function has linkonce_odr linkage and unnamed_addr, mark itRafael Espindola
hidden. Being linkonce_odr guarantees that it is available in every dso that needs it. Being a constant/function with unnamed_addr guarantees that the copies don't have to be merged. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159136 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25The name (and comment describing) of llvm::GetFirstDebuigLocInBasicBlock no ↵Eli Bendersky
longer represents what the function does. Therefore, the function is removed and its functionality is folded into the only place in the code-base where it was being used. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159133 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-24llvm/lib: [CMake] Add explicit dependency to intrinsics_gen.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159112 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-24Allow controlling vectorization of boolean values separately from other ↵Hal Finkel
integer types. These are used as the result of comparisons, and often handled differently from larger integer types. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159111 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-24Remove dyn_cast + dereference pattern by replacing it with a cast and changingNick Lewycky
the safety check to look for the same type we're going to actually cast to. Fixes PR13180! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159110 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-24Tab to spaces. No functionality change.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159104 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-24Remove a dangling reference to a deleted instruction. Fixes PR13185!Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159096 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-23Allow BBVectorize to fuse compare instructions.Hal Finkel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159088 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-23Extend the IL for selecting TLS models (PR9788)Hans Wennborg
This allows the user/front-end to specify a model that is better than what LLVM would choose by default. For example, a variable might be declared as @x = thread_local(initialexec) global i32 42 if it will not be used in a shared library that is dlopen'ed. If the specified model isn't supported by the target, or if LLVM can make a better choice, a different model may be used. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159077 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-23Optimized usage of new SwitchInst case values (IntegersSubset type) in ↵Stepan Dyatkovskiy
Local.cpp, Execution.cpp and BitcodeWriter.cpp. I got about 1% of compile-time improvement on my machines (Ubuntu 11.10 i386 and Ubuntu 12.04 x64). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159076 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-23BoundsChecking: attach debug info to traps to make my life a bit more saneNuno Lopes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159055 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-22Revert remaining part of r93200: "Disable folding sext(trunc(x)) -> x"Jakob Stoklund Olesen
This fixes PR5997. These transforms were disabled because codegen couldn't deal with other uses of trunc(x). This is now handled by the peephole pass. This causes no regressions on x86-64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159003 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-22Fixed r158979.Stepan Dyatkovskiy
Original message: Performance optimizations: - SwitchInst: case values stored separately from Operands List. It allows to make faster access to individual case value numbers or ranges. - Optimized IntItem, added APInt value caching. - Optimized IntegersSubsetGeneric: added optimizations for cases when subset is single number or when subset consists from single numbers only. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158997 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-22fix whitespace in my last commit.Nuno Lopes
sorry for the churn :S enough for today; going to sleep. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158953 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-22remove extractMallocCallFromBitCast, since it was tailor maded for its sole ↵Nuno Lopes
user. Update GlobalOpt accordingly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158952 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-21instcombine: disable optimization of 'invoke null/undef'. I'll move this ↵Nuno Lopes
functionality to SimplifyCFG (since we cannot make changes to the CFG here). Fixes the crashes with the attached test case git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158951 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-21Look pass zext to strength reduce an udiv. Patch by David Majnemer. ↵Evan Cheng
rdar://11721329 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158946 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-21Add support for invoke to the MemoryBuiltin analysid.Nuno Lopes
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
2012-06-21port the BoundsChecking patch to the new MemoryBuiltin API (i.e., remove ↵Nuno Lopes
most of the code from here). Remove the alloc_size.ll test until we settle on a metadata format that makes everyone happy.. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158920 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-21refactor the MemoryBuiltin analysis:Nuno Lopes
- 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
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