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2012-12-17Fix a secondary bug I introduced while fixing the first part of PR14478.Chandler Carruth
The first half of fixing this bug was actually in r170328, but was entirely coincidental. It did however get me to realize the nature of the bug, and adapt the test case to test more interesting behavior. In turn, that uncovered the rest of the bug which I've fixed here. This should fix two new asserts that showed up in the vectorize nightly tester. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170333 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-17Hoist a convertValue call to the two paths where it is needed.Chandler Carruth
I noticed this while looking at r170328. We only ever do a vector rewrite when the alloca *is* the vector type, so it's good to not paper over bugs here by doing a convertValue that isn't needed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170331 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-17Hoist the insertVector helper to be a static helper.Chandler Carruth
This will allow its use inside of memcpy rewriting as well. This routine is more complex than extractVector, and some of its uses are not 100% where I want them to be so there is still some work to do here. While this can technically change the output in some cases, it shouldn't be a change that matters -- IE, it can leave some dead code lying around that prior versions did not, etc. Yet another step in the refactorings leading up to the solution to the last component of PR14478. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170328 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-17Lift the extractVector helper all the way out to a static helper function.Chandler Carruth
The method helpers all implicitly act upon the alloca, and what we really want is a fully generic helper. Doing memcpy rewrites is more special than all other rewrites because we are at times rewriting instructions which touch pointers *other* than the alloca. As a consequence all of the helpers needed by memcpy rewriting of sub-vector copies will need to be generalized fully. Note that all of these helpers ({insert,extract}{Integer,Vector}) are woefully uncommented. I'm going to go back through and document them once I get the factoring correct. No functionality changed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170325 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-17Factor the vector load rewriting into a more generic form.Chandler Carruth
This makes it suitable for use in rewriting memcpy in the presence of subvector memcpy intrinsics. No functionality changed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170324 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-17Fix the first part of PR14478: memset now works.Chandler Carruth
PR14478 highlights a serious problem in SROA that simply wasn't being exercised due to a lack of vector input code mixed with C-library function calls. Part of SROA was written carefully to handle subvector accesses via memset and memcpy, but the rewriter never grew support for this. Fixing it required refactoring the subvector access code in other parts of SROA so it could be shared, and then fixing the splat formation logic and using subvector insertion (this patch). The PR isn't quite fixed yet, as memcpy is still broken in the same way. I'm starting on that series of patches now. Hopefully this will be enough to bring the bullet benchmark back to life with the bb-vectorizer enabled, but that may require fixing memcpy as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170301 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-17Extract the logic for inserting a subvector into a vector alloca.Chandler Carruth
No functionality changed. Another step of refactoring toward solving PR14487. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170300 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-17Lift the integer splat computation into a helper function.Chandler Carruth
No functionality changed. Refactoring leading up to the fix for PR14478 which requires some significant changes to the memset and memcpy rewriting. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170299 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-15Relax an overly aggressive assert to fix PR14572.Chandler Carruth
The alloca width is based on the alloc size, not the type size. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170270 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-15Revert r170246, "Enable the loop vectorizer by default."NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170267 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-14Add back FoldOpIntoPhi optimizations with fix. Included test cases to help ↵Michael Ilseman
catch these errors and to test the presence of the optimization itself git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170248 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-14Enable the loop vectorizer by default.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170246 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-14rdar://12753946Shuxin Yang
Implement rule : "x * (select cond 1.0, 0.0) -> select cond x, 0.0" git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170226 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-14Fix lint warnings in MemorySanitizer.cpp.Evgeniy Stepanov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170203 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-14[msan] Origin stores and loads do not need explicit alignment.Evgeniy Stepanov
Origin address is always 4 byte aligned, and the access type is always i32. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170199 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-14[msan] Refactor default shadow propagation and origin tracking.Evgeniy Stepanov
This change moves the code for default shadow propagaition (handleShadowOr) and origin tracking (setOriginForNaryOp) into a new builder-like class. Also gets rid of handleShadowOrBinary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170192 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-14revert r170166 - disable the loop vectorizer.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170172 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-14Enable the loop vectorizer.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170166 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-14Disable the loop vectorizer.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170162 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-13Enable the Loop Vectorizer by default for O2 and O3. Disable if-conversion ↵Nadav Rotem
by default. I plan to revert this patch later today. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170157 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-13Revert r170020, "Simplify negated bit test", for now.NAKAMURA Takumi
This assumes (1 << n) is always not zero. Consider n is greater than word size. Although I know it is undefined, this transforms undefined behavior hidden. This led clang unexpected behavior with some failures. I will investigate to fix undefined shl in clang. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170128 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-13Revert "Restore the PHI optimization I accidently removed" temporarily sinceEric Christopher
it seems to be breaking self-host for a few people and is PR14592. This reverts commit r170024. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170106 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-13Missed these calls from the previous rename somehow.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170094 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-13Rename isPowerOfTwo to isKnownToBeAPowerOfTwo.Rafael Espindola
In a previous thread it was pointed out that isPowerOfTwo is not a very precise name since it can return false for powers of two if it is unable to show that they are powers of two. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170093 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-13Pattern matching code for intrinsics.Michael Ilseman
Provides m_Argument that allows matching against a CallSite's specified argument. Provides m_Intrinsic pattern that can be templatized over the intrinsic id and bind/match arguments similarly to other pattern matchers. Implementations provided for 0 to 4 arguments, though it's very simple to extend for more. Also provides example template specialization for bswap (m_BSwap) and example of code cleanup for its use. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170091 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-13Take into account minimize size attribute in the inliner.Quentin Colombet
Better controls the inlining of functions when the caller function has MinSize attribute. Basically, when the caller function has this attribute, we do not "force" the inlining of callee functions carrying the InlineHint attribute (i.e., functions defined with inline keyword) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170065 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-13Teach the cost model about the optimization in r169904: Truncation of ↵Nadav Rotem
induction variables costs the same as scalar trunc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170051 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-13Typo.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170050 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-12Restore the PHI optimization I accidently removedMichael Ilseman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170024 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-12Remove trailing whitespaceMichael Ilseman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170022 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-12Simplify negated bit testDavid Majnemer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170020 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-12Fix indentation.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170005 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-12LoopVectorizer: Use the "optsize" attribute to decide if we are allowed to ↵Nadav Rotem
increase the function size. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170004 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-12The TargetData is not used for the isPowerOfTwo determination. It has neverRafael Espindola
been used in the first place. It simply was passed to the function and to the recursive invocations. Simply drop the parameter and update the callers for the new signature. Patch by Saleem Abdulrasool! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169988 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-12Improve debug info generated with enabled AddressSanitizer.Alexey Samsonov
When ASan replaces <alloca instruction> with <offset into a common large alloca>, it should also patch llvm.dbg.declare calls and replace debug info descriptors to mark that we've replaced alloca with a value that stores an address of the user variable, not the user variable itself. See PR11818 for more context. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169984 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-12Fix the ascii drawing that was ruined when I split the H and CPPNadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169955 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-12fix a typo.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169953 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-12LoopVectorizer: When -Os is used, vectorize only loops that dont require a ↵Nadav Rotem
tail loop. There is no testcase because I dont know of a way to initialize the loop vectorizer pass without adding an additional hidden flag. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169950 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-12- Fix a problematic way in creating all-the-1 APInt.Shuxin Yang
- Propagate "exact" bit of [l|a]shr instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169942 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-12Remove redunant optimizations from InstCombine, instead call the appropriate ↵Michael Ilseman
functions from SimplifyInstruction git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169941 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-11PR14574. Fix a bug in the code that calculates the mask the converted PHIs ↵Nadav Rotem
in if-conversion. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169916 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-11Loop Vectorize: optimize the vectorization of trunc(induction_var). The ↵Nadav Rotem
truncation is now done on scalars. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169904 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-11Use an ArrayRef instead of a std::vector&.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169881 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-11[msan] Use explicitely aligned stores and loads with function argument shadow.Evgeniy Stepanov
Use explicitely aligned store and load instructions to deal with argument and retval shadow. This matters when an argument's alignment is higher than __msan_param_tls alignment (which is the case with __m128i). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169859 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-11Revert EVT->MVT changes, r169836-169851, due to buildbot failures.Patrik Hagglund
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169854 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-11Change TargetLowering::getLoadExtAction to take an MVT, instead of EVT.Patrik Hagglund
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169840 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-11Fix PR14565. Don't if-convert loops that have switch statements in them.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169813 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-10Enable the loop vectorizer only on O2 and above. (Still disabled by default)Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169774 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-10Split the LoopVectorizer into H and CPP.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169771 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-10Don't use a red zone for code coverage if the user specified `-mno-red-zone'.Bill Wendling
The `-mno-red-zone' flag wasn't being propagated to the functions that code coverage generates. This allowed some of them to use the red zone when that wasn't allowed. <rdar://problem/12843084> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169754 91177308-0d34-0410-b5e6-96231b3b80d8
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