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2012-12-10Reorder fission variables.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169756 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
2012-12-10Add support for reverse induction variables. For example:Nadav Rotem
while (i--) sum+=A[i]; git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169752 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-10CMake: Don't run 'git svn' if there is no .git/svn directory.Jim Grosbach
If the local checkout does not have 'git svn' references set up, don't try to use 'git svn' for version information. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169749 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-10This patch adds statistics for other non-DWARF fragments emitted byEli Bendersky
the assembler. This is useful in order to know how the numbers add up, since in particular the Align fragments account for a non-trivial portion of the emitted fragments (especially on -O0 which sets relax-all). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169747 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-10Use GetUnderlyingObjects in mischedHal Finkel
misched used GetUnderlyingObject in order to break false load/store dependencies, and the -enable-aa-sched-mi feature similarly relied on GetUnderlyingObject in order to ensure it is safe to use the aliasing analysis. Unfortunately, GetUnderlyingObject does not recurse through phi nodes, and so (especially due to LSR) all of these mechanisms failed for induction-variable-dependent loads and stores inside loops. This change replaces uses of GetUnderlyingObject with GetUnderlyingObjects (which will recurse through phi and select instructions) in misched. Andy reviewed, tested and simplified this patch; Thanks! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169744 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-10Fix funky copy-pasted grammatical error.Sean Silva
PR14343 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169742 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-10Revert "Make '-mtune=x86_64' assume fast unaligned memory accesses."Chandler Carruth
Accidental commit... git svn betrayed me. Sorry for the noise. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169741 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-10Make '-mtune=x86_64' assume fast unaligned memory accesses.Chandler Carruth
Summary: Not all chips targeted by x86_64 have this feature, but a dramatically increasing number do. Specifying a chip-specific tuning parameter will continue to turn the feature on or off as appropriate for that particular chip, but the generic flag should try to achieve the best performance on the most widely available hardware. Today, the number of chips with fast UA access dwarfs those without in the x86-64 space. Note that this also brings LLVM's code generation for this '-march' flag more in line with that of modern GCCs. CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D195 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169740 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-10Fix a typo in my previous commit -- bloomfield is 0x1A not 0x2A.Chandler Carruth
Thanks to the PaX folks for noticing in review! We need some tests here, any sugestions welcome... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169739 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-10Address a FIXME and update the fast unaligned memory feature for newerChandler Carruth
Intel chips. The model number rules were determined by inspecting Intel's documentation for their newer chip model numbers. My understanding is that all of the newer Intel chips have fast unaligned memory access, but if anyone is concerned about a particular chip, just shout. No tests updated; it's not clear we have dedicated tests for the chips' various features, but if anyone would like tests (or can point me at some existing ones), I'm happy to oblige. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169730 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-10Add a new visitor for walking the uses of a pointer value.Chandler Carruth
This visitor provides infrastructure for recursively traversing the use-graph of a pointer-producing instruction like an alloca or a malloc. It maintains a worklist of uses to visit, so it can handle very deep recursions. It automatically looks through instructions which simply translate one pointer to another (bitcasts and GEPs). It tracks the offset relative to the original pointer as long as that offset remains constant and exposes it during the visit as an APInt offset. Finally, it performs conservative escape analysis. However, currently it has some limitations that should be addressed going forward: 1) It doesn't handle vectors of pointers. 2) It doesn't provide a cheaper visitor when the constant offset tracking isn't needed. 3) It doesn't support non-instruction pointer values. The current functionality is exactly what is required to implement the SROA pointer-use visitors in terms of this one, rather than in terms of their own ad-hoc base visitor, which was always very poorly specified. SROA has been converted to use this, and the code there deleted which this utility now provides. Technically speaking, using this new visitor allows SROA to handle a few more cases than it previously did. It is now more aggressive in ignoring chains of instructions which look like they would defeat SROA, but in fact do not because they never result in a read or write of memory. While this is "neat", it shouldn't be interesting for real programs as any such chains should have been removed by others passes long before we get to SROA. As a consequence, I've not added any tests for these features -- it shouldn't be part of SROA's contract to perform such heroics. The goal is to extend the functionality of this visitor going forward, and re-use it from passes like ASan that can benefit from doing a detailed walk of the uses of a pointer. Thanks to Ben Kramer for the code review rounds and lots of help reviewing and debugging this patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169728 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-10Teach DAG combine to handle vector add/sub with vectors of all 0s.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169727 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-10[CMake] TARGET_TRIPLE may be internal alias of LLVM_DEFAULT_TARGET_TRIPLE.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169726 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-10[CMake] Update dependencies to intrinsics_gen corresponding to r169711.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169724 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-10Revert to old behavior until linker can pass export-dynamic option.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169720 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-10Fix PR14548: SROA was crashing on a mixture of i1 and i8 loads and stores.Chandler Carruth
When SROA was evaluating a mixture of i1 and i8 loads and stores, in just a particular case, it would tickle a latent bug where we compared bits to bytes rather than bits to bits. As a consequence of the latent bug, we would allow integers through which were not byte-size multiples, a situation the later rewriting code was never intended to handle. In release builds this could trigger all manner of oddities, but the reported issue in PR14548 was forming invalid bitcast instructions. The only downside of this fix is that it makes it more clear that SROA in its current form is not capable of handling mixed i1 and i8 loads and stores. Sometimes with the previous code this would work by luck, but usually it would crash, so I'm not terribly worried. I'll watch the LNT numbers just to be sure. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169719 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-09Documentation: convert ReleaseNotes.html to reST.Dmitri Gribenko
Patch by Anthony Mykhailenko with small fixes by me. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169714 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-09Reorganize FastMathFlags to be a wrapper around unsigned, and streamline ↵Michael Ilseman
some interfaces. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169712 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-09LoopVectorize: support vectorizing intrinsic callsPaul Redmond
- added function to VectorTargetTransformInfo to query cost of intrinsics - vectorize trivially vectorizable intrinsic calls such as sin, cos, log, etc. Reviewed by: Nadav git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169711 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-09Have the bitcode reader/writer just use FPMathOperator's fast math enum directlyMichael Ilseman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169710 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-09test commit.Paul Redmond
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169709 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-09So many people have touched this, it doesn't make sense to ascribe ↵Chris Lattner
authorship anymore. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169704 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-09Use m_OneUse pattern instead of hasOneUse() method.Jakub Staszak
No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169703 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-09docs: Convert GarbageCollection.html to reSTSean Silva
Patch by Alexander Zinenko! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169702 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-09Remove trailing spaces.Jakub Staszak
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169701 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-09Documentation: HowToReleaseLLVM.rst: remove trailing whitespace.Dmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169700 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-09Documentation: don't create TOCs manually.Dmitri Gribenko
Thanks to Sean Silva for pointing out! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169699 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-09Switch SROA to pop Uses off the back of its visitors' queues.Chandler Carruth
This will more closely match the behavior of the new PtrUseVisitor that I am adding. Hopefully this will not change the actual behavior in any way, but by making the processing order more similar help in debugging. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169697 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-09Drop the address space limit for tests in the makefile build.Benjamin Kramer
The limit seems to break newer pythons (see PR13598) so just drop it for now. Eventually lit should learn to set limits for its children instead of a global limit in the makefile. If some PPC bots fail after this change: That's a good thing, they actually run clang tests now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169695 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-09Remove extra blank line.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169692 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-09- Re-enable population count loop idiom recognization Shuxin Yang
- fix a bug which cause sigfault. - add two testing cases which was causing crash git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169687 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-08Teach DAG combine to handle vector logical operations with vectors of all 1s ↵Craig Topper
or all 0s. These cases can show up when vectors are split for legalizing. Fix some tests that were dependent on these cases not being combined. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169684 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-08Revert the patches adding a popcount loop idiom recognition pass.Chandler Carruth
There are still bugs in this pass, as well as other issues that are being worked on, but the bugs are crashers that occur pretty easily in the wild. Test cases have been sent to the original commit's review thread. This reverts the commits: r169671: Fix a logic error. r169604: Move the popcnt tests to an X86 subdirectory. r168931: Initial commit adding the pass. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169683 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-08Simplify code. Sort includes. No functionality change.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169676 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-08Fix Windows build breakage.Logan Chien
Windows does not have <stdint.h>, should include "llvm/Support/DataTypes.h" instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169672 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-08Fix an inadvertent typo error.Shuxin Yang
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169671 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-08Fix a use-after-free bug found by ASan. You can't assign a temporaryChandler Carruth
std::string to a StringRef. Moreover, the method being called accepts a Twine to simplify these patterns. Fixes this ASan failure: ==6312== ERROR: AddressSanitizer: heap-use-after-free on address 0x7fd558b1af58 at pc 0xcb7529 bp 0x7fffff572080 sp 0x7fffff572078 READ of size 1 at 0x7fd558b1af58 thread T0 #0 0xcb7528 .../llvm/include/llvm/ADT/StringRef.h:192 llvm::StringRef::operator[]() #1 0x1d53c0a .../llvm/include/llvm/ADT/StringExtras.h:128 llvm::HashString() #2 0x1d53878 .../llvm/lib/Support/StringMap.cpp:64 llvm::StringMapImpl::LookupBucketFor() #3 0x1b6872f .../llvm/include/llvm/ADT/StringMap.h:352 llvm::StringMap<>::GetOrCreateValue<>() #4 0x1b61836 .../llvm/lib/MC/MCContext.cpp:109 llvm::MCContext::GetOrCreateSymbol() #5 0xe9fd47 .../llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp:154 (anonymous namespace)::ARMELFStreamer::EmitMappingSymbol() #6 0xea01dd .../llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp:133 (anonymous namespace)::ARMELFStreamer::EmitDataMappingSymbol() #7 0xe9f78b .../llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp:91 (anonymous namespace)::ARMELFStreamer::EmitBytes() #8 0x1b15d82 .../llvm/lib/MC/MCStreamer.cpp:89 llvm::MCStreamer::EmitIntValue() #9 0xcc0f9b .../llvm/lib/Target/ARM/ARMAsmPrinter.cpp:713 llvm::ARMAsmPrinter::emitAttributes() #10 0xcc0d44 .../llvm/lib/Target/ARM/ARMAsmPrinter.cpp:632 llvm::ARMAsmPrinter::EmitStartOfAsmFile() #11 0x14692ad .../llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp:162 llvm::AsmPrinter::doInitialization() #12 0x1bc4677 .../llvm/lib/VMCore/PassManager.cpp:1561 llvm::FPPassManager::doInitialization() #13 0x1bc4990 .../llvm/lib/VMCore/PassManager.cpp:1595 llvm::MPPassManager::runOnModule() #14 0x1bc55e5 .../llvm/lib/VMCore/PassManager.cpp:1705 llvm::PassManagerImpl::run() #15 0x1bc5878 .../llvm/lib/VMCore/PassManager.cpp:1740 llvm::PassManager::run() #16 0xc3954d .../llvm/tools/llc/llc.cpp:378 compileModule() #17 0xc38001 .../llvm/tools/llc/llc.cpp:194 main #18 0x7fd557d6a11c __libc_start_main 0x7fd558b1af58 is located 24 bytes inside of 29-byte region [0x7fd558b1af40,0x7fd558b1af5d) freed by thread T0 here: #0 0xc337da .../llvm/projects/compiler-rt/lib/asan/asan_new_delete.cc:56 operator delete() #1 0x1ee9cef .../libstdc++-v3/include/bits/basic_string.h:535 std::string::~string() #2 0xea01dd .../llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp:133 (anonymous namespace)::ARMELFStreamer::EmitDataMappingSymbol() #3 0xe9f78b .../llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp:91 (anonymous namespace)::ARMELFStreamer::EmitBytes() #4 0x1b15d82 .../llvm/lib/MC/MCStreamer.cpp:89 llvm::MCStreamer::EmitIntValue() #5 0xcc0f9b .../llvm/lib/Target/ARM/ARMAsmPrinter.cpp:713 llvm::ARMAsmPrinter::emitAttributes() #6 0xcc0d44 .../llvm/lib/Target/ARM/ARMAsmPrinter.cpp:632 llvm::ARMAsmPrinter::EmitStartOfAsmFile() #7 0x14692ad .../llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp:162 llvm::AsmPrinter::doInitialization() #8 0x1bc4677 .../llvm/lib/VMCore/PassManager.cpp:1561 llvm::FPPassManager::doInitialization() #9 0x1bc4990 .../llvm/lib/VMCore/PassManager.cpp:1595 llvm::MPPassManager::runOnModule() #10 0x1bc55e5 .../llvm/lib/VMCore/PassManager.cpp:1705 llvm::PassManagerImpl::run() #11 0x1bc5878 .../llvm/lib/VMCore/PassManager.cpp:1740 llvm::PassManager::run() #12 0xc3954d .../llvm/tools/llc/llc.cpp:378 compileModule() #13 0xc38001 .../llvm/tools/llc/llc.cpp:194 main #14 0x7fd557d6a11c __libc_start_main git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169668 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-08Add the `lto_codegen_set_export_dynamic' function.Bill Wendling
This function sets the `_exportDynamic' ivar. When that's set, we export all symbols (e.g. we don't run the internalize pass). This is equivalent to the `--export-dynamic' linker flag in GNU land: --export-dynamic When creating a dynamically linked executable, add all symbols to the dynamic symbol table. The dynamic symbol table is the set of symbols which are visible from dynamic objects at run time. If you do not use this option, the dynamic symbol table will normally contain only those symbols which are referenced by some dynamic object mentioned in the link. If you use dlopen to load a dynamic object which needs to refer back to the symbols defined by the program, rather than some other dynamic object, then you will probably need to use this option when linking the program itself. The Darwin linker will support this via the `-export_dynamic' flag. We should modify clang to support this via the `-rdynamic' flag. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169656 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-07Add C API for specifying CPU to the disassembler.Jim Grosbach
It was a nasty oversight that we didn't include this when we added this API in the first place. Blech. rdar://12839439 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169653 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-07s/AttrListPtr/AttributeSet/g to better label what this class is going to be ↵Bill Wendling
in the near future. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169651 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-07Make the contents of encoded sections SmallVector<char, N> instead ofEli Bendersky
SmallString. This makes it possible to use the length-erased SmallVectorImpl in the interface without imposing buffer size. Thus, the size of MCInstFragment is back down since a preallocated 8-byte contents buffer is enough. It would be generally a good idea to rid all the fragments of SmallString as contents, because a vector just makes more sense. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169644 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-07When we use the BLEND instruction that uses the MSB as a mask, we can removeNadav Rotem
the VSRI instruction before it since it does not affect the MSB. Thanks Craig Topper for suggesting this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169638 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-07Remove trailing whitespaceMichael Ilseman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169637 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-07In hexagon convertToHardwareLoop, don't deref end() iteratorMatthew Curtis
In particular, check if MachineBasicBlock::iterator is end() before using it to call getDebugLoc(); See also this thread on llvm-commits: http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20121112/155914.html git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169634 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-07Mark ImmutableMap::remove/add() const.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169629 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-07Fixed some grammar and punctuation error.John Criswell
No content changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169627 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-07Refactor MCInstFragment and MCDataFragment to adhere to a common interface,Eli Bendersky
which removes code duplication and prepares the ground for future additions. Full discussion: http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20121203/158233.html git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169626 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-07X86: Prefer using VPSHUFD over VPERMIL because it has better throughput.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169624 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-07Add separate statistics for Data and Inst fragments emitted during relaxation.Eli Bendersky
Also fixes a test that was overly-sensitive to the exact order of statistics emitted. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169619 91177308-0d34-0410-b5e6-96231b3b80d8
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