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2013-01-15LoopVectorizer cost model. Honor the user command line flag that selects the ↵Nadav Rotem
vectorization factor even if the target machine does not have any vector registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172544 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-15[msan] Fix handling of equality comparison of pointer vectors.Evgeniy Stepanov
Also improve test coveration of the handling of relational comparisons. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172539 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Remove trailing spaces.Jakub Staszak
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172489 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14This change is to implement following rules under the condition C_A and/or C_RShuxin Yang
--------------------------------------------------------------------------- C_A: reassociation is allowed C_R: reciprocal of a constant C is appropriate, which means - 1/C is exact, or - reciprocal is allowed and 1/C is neither a special value nor a denormal. ----------------------------------------------------------------------------- rule1: (X/C1) / C2 => X / (C2*C1) (if C_A) => X * (1/(C2*C1)) (if C_A && C_R) rule 2: X*C1 / C2 => X * (C1/C2) if C_A rule 3: (X/Y)/Z = > X/(Y*Z) (if C_A && at least one of Y and Z is symbolic value) rule 4: Z/(X/Y) = > (Z*Y)/X (similar to rule3) rule 5: C1/(X*C2) => (C1/C2) / X (if C_A) rule 6: C1/(X/C2) => (C1*C2) / X (if C_A) rule 7: C1/(C2/X) => (C1/C2) * X (if C_A) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172488 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Fix Casting BugDavid Greene
Add a const version of getFpValPtr to avoid a cast-away-const warning. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172467 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Fix typo in comment.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172460 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Changed SmallPtrSet.count guard + SmallPtrSet.insert to just SmallPtrSet.insert.Michael Gottesman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172452 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Fixed some 80+ violations.Michael Gottesman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172374 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Updated the documentation in ObjCARC.cpp to fit the style guide better (i.e. ↵Michael Gottesman
use doxygen). Still some work to do though. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172371 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-13Fixed an infinite loop in the block escape in analysis in ObjCARC caused by ↵Michael Gottesman
2x blocks each assigned a value via a phi-node causing each to depend on the other. A test case is provided as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172368 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-13Remove redundant 'llvm::' qualificationsDmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172358 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-13Fix PR14547. Handle induction variables of small sizes smaller than i32 (i8 ↵Nadav Rotem
and i16). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172348 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-13[ObjCARC] Even more debug messages!Michael Gottesman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172347 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-13[ObjCARC] More debug messages.Michael Gottesman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172346 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-12Fix an editor goof in r171738 that Bill spotted. He may even have a testChandler Carruth
case, but looking at the diff this was an obviously unintended change. Thanks for the careful review Bill! =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172336 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-12GlobalOpt: Avoid jump on uninitialized value.Benjamin Kramer
Found by valgrind. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172318 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-12Fixed debug message in ObjCARC.Michael Gottesman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172299 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-12Fixed a few debug messages in ObjCARC and added one.Michael Gottesman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172298 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-12Fixed bug in ObjCARC where we were changing a call from objc_autoreleaseRV ↵Michael Gottesman
=> objc_autorelease but were not updating the InstructionClass to IC_Autorelease. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172288 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-12Fixed a bug where we were tail calling objc_autorelease causing an object to ↵Michael Gottesman
not be placed into an autorelease pool. The reason that this occurs is that tail calling objc_autorelease eventually tail calls -[NSObject autorelease] which supports fast autorelease. This can cause us to violate the semantic gaurantees of __autoreleasing variables that assignment to an __autoreleasing variables always yields an object that is placed into the innermost autorelease pool. The fix included in this patch works by: 1. In the peephole optimization function OptimizeIndividualFunctions, always remove tail call from objc_autorelease. 2. Whenever we convert to/from an objc_autorelease, set/unset the tail call keyword as appropriate. *NOTE* I also handled the case where objc_autorelease is converted in OptimizeReturns to an autoreleaseRV which still violates the ARC semantics. I will be removing that in a later patch and I wanted to make sure that the tree is in a consistent state vis-a-vis ARC always. Additionally some test cases are provided and all tests that have tail call marked objc_autorelease keywords have been modified so that tail call has been removed. *NOTE* One test fails due to a separate bug that I am going to commit soon. Thus I marked the check line TMP: instead of CHECK: so make check does not fail. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172287 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-11Replace DepLibs bitcode record with metadataDerek Schuff
It keeps the same Module interface as the existing/old deplibs feature, but populates the library list from the metadata after reading the bitcode/LL into the Module. Keeping the same module interface will allow us to keep the existing uses (e.g. in the gold plugin) as they are. Internally it still uses the LibraryList variable, but uses it basically as a cache backed by the metadata. BUG= Review URL: https://codereview.chromium.org/11615013
2013-01-11Fixed whitespace.Michael Gottesman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172271 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-11Merge commit '1ad9253c9d34ccbce3e7e4ea5d87c266cbf93410'Derek Schuff
deplib features commented out due to removal upstream; will add back as a localmod Conflicts: include/llvm/ADT/Triple.h include/llvm/MC/MCAssembler.h include/llvm/Target/TargetFrameLowering.h lib/CodeGen/AsmPrinter/DwarfDebug.cpp lib/CodeGen/AsmPrinter/DwarfDebug.h lib/CodeGen/BranchFolding.cpp lib/LLVMBuild.txt lib/Linker/LinkArchives.cpp lib/MC/MCAssembler.cpp lib/MC/MCELFStreamer.cpp lib/Makefile lib/Target/ARM/ARMExpandPseudoInsts.cpp lib/Target/ARM/ARMFrameLowering.cpp lib/Target/ARM/ARMISelLowering.cpp lib/Target/ARM/ARMSubtarget.h lib/Target/ARM/ARMTargetObjectFile.cpp lib/Target/ARM/MCTargetDesc/ARMAsmBackend.cpp lib/Target/Mips/MipsInstrFPU.td lib/Target/Mips/MipsInstrInfo.td lib/Target/X86/X86CodeEmitter.cpp lib/Target/X86/X86Subtarget.h lib/VMCore/Module.cpp test/MC/MachO/ARM/nop-armv4-padding.s tools/Makefile tools/llc/llc.cpp tools/lto/LTOModule.cpp tools/lto/lto.cpp
2013-01-11Added debug messages to GlobalOpt.Michael Gottesman
Specifically: 1. Added a missing new line when we emit a debug message saying that we are marking a global variable as constant. 2. Added debug messages that describe what is occuring when GlobalOpt is evaluating a block/function. 3. Added a debug message that says what specific constructor is being evaluated. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172247 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-11ARM Cost Model: We need to detect the max bitwidth of types in the loop in ↵Nadav Rotem
order to select the max vectorization factor. We don't have a detailed analysis on which values are vectorized and which stay scalars in the vectorized loop so we use another method. We look at reduction variables, loads and stores, which are the only ways to get information in and out of loop iterations. If the data types are extended and truncated then the cost model will catch the cost of the vector zext/sext/trunc operations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172178 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-10PR14904: Segmentation fault running pass 'Recognize loop idioms'Shuxin Yang
The root cause is mistakenly taking for granted that "dyn_cast<Instruction>(a-Value)" return a non-NULL instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172145 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-10[msan] Change va_start/va_copy shadow memset alignment to 8.Peter Collingbourne
This fixes va_start/va_copy of a va_list field which happens to not be laid out at a 16-byte boundary. Differential Revision: http://llvm-reviews.chandlerc.com/D276 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172128 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-10Teach InstCombine to hoist FABS and FNEG through FPTRUNC instructions. The ↵Owen Anderson
application of these operations commutes with the truncation, so we should prefer to do them in the smallest size we can, to save register space, use smaller constant pool entries, etc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172117 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-10LoopVectorizer: Fix a bug in the vectorization of BinaryOperators. The ↵Nadav Rotem
BinaryOperator can be folded to an Undef, and we don't want to set NSW flags to undef vals. PR14878 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172079 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-10Fix TryToShrinkGlobalToBoolean in GlobalOpt, so that it does not discard ↵Joey Gouly
address spaces. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172051 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-10[ObjCARC Debug Message] Added debug message when we convert an autorelease ↵Michael Gottesman
into an autoreleaseRV. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172034 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-09ARM Cost model: Use the size of vector registers and widest vectorizable ↵Nadav Rotem
instruction to determine the max vectorization factor. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172010 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-09[ObjCARC Debug Messages] This is a squashed commit of 3x debug message ↵Michael Gottesman
commits ala echristo's suggestion. 1. Added debug messages when in OptimizeIndividualCalls we move calls into predecessors and then erase the original call. 2. Added debug messages when in the process of moving calls in ObjCARCOpt::MoveCalls we create new RR and delete old RR. 3. Added a debug message when we visit a specific retain instruction in ObjCARCOpt::PerformCodePlacement. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171988 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-09LICM: Hoist insertvalue/extractvalue out of loops.Benjamin Kramer
Fixes PR14854. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171984 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-09Cost Model: Move the 'max unroll factor' variable to the TTI and add initial ↵Nadav Rotem
Cost Model support on ARM. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171928 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-09Consider expression "0.0 - X" as the negation of X ifShuxin Yang
- this expression is explicitly marked no-signed-zero, or - no-signed-zero of this expression can be derived from some context. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171922 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-08Code cleanup: refactor the switch statements in the generation of reduction ↵Nadav Rotem
variables into an IR builder call. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171871 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-08Rename the enum members to match the LLVM coding style.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171868 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-08Make sure we don't emit instructions before a landingpad instruction.Bill Wendling
PR14782 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171846 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-07LoopVectorizer: Add support for floating point reductionsNadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171812 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-07Cosmetical changne in order to conform to coding std.Shuxin Yang
Thank Eric Christopher for figuring out these problems! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171805 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-07LoopVectorizer: When we vectorizer and widen loops we process many elements ↵Nadav Rotem
at once. This is a good thing, except for small loops. On small loops post-loop that handles scalars (and runs slower) can take more time to execute than the rest of the loop. This patch disables widening of loops with a small static trip count. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171798 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-07This change is to implement following rules:Shuxin Yang
o. X/C1 * C2 => X * (C2/C1) (if C2/C1 is neither special FP nor denormal) o. X/C1 * C2 -> X/(C1/C2) (if C2/C1 is either specical FP or denormal, but C1/C2 is a normal Fp) Let MDC denote multiplication or dividion with one & only one operand being a constant o. (MDC ± C1) * C2 => (MDC * C2) ± (C1 * C2) (so long as the constant-folding doesn't yield any denormal or special value) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171793 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-07Fixed EOL whitespace.Michael Gottesman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171791 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-07When code size is the priority (Oz, MinSize attribute), help llvmQuentin Colombet
turning a code like this: if (foo) free(foo) into that: free(foo) Move a call to free from basic block FB into FB's predecessor, P, when the path from P to FB is taken only if the argument of free is not equal to NULL. Some restrictions apply on P and FB to be sure that this code motion is profitable. Namely: 1. FB must have only one predecessor P. 2. FB must contain only the call to free plus an unconditional branch to S. 3. P's successors are FB and S. Because of 1., we will not increase the code size when moving the call to free from FB to P. Because of 2., FB will be empty after the move. Because of 2. and 3., P's branch instruction becomes useless, so as FB (simplifycfg will do the job). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171762 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-07Move TypeFinder.h into the IR tree, it clearly belongs with the IR library.Chandler Carruth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171749 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-07Move CallGraphSCCPass.h into the Analysis tree; that's where theChandler Carruth
implementation lives already. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171746 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-07Remove the long defunct 'DefaultPasses' header. We have a pass managerChandler Carruth
builder these days, and this thing hasn't seen updates for a very long time. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171741 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-07Sink AddrMode back into TargetLowering, removing one of the mostChandler Carruth
peculiar headers under include/llvm. This struct still doesn't make a lot of sense, but it makes more sense down in TargetLowering than it did before. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171739 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-07Remove LSR's use of the random AddrMode struct. These variables wereChandler Carruth
already in a class, just inline the four of them. I suspect that this class could be simplified some to not always keep distinct variables for these things, but it wasn't clear to me how given the usage so I opted for a trivial and mechanical translation. This removes one of the two remaining users of a header in include/llvm which does nothing more than define a 4 member struct. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171738 91177308-0d34-0410-b5e6-96231b3b80d8
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