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2012-02-16Add 'exception handling' to my description.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150678 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-16Add blurb about module flags and reformat a bit.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150677 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-16Remove extraneous #include and spelling mistake introduced in r150669.James Molloy
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150670 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-16Modify the algorithm when traversing the DAGCombiner's worklist to be O(log ↵James Molloy
N) for all operations. This fixes a horrible worst case with lots of nodes where 99% of the time was being spent in std::remove. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150669 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-16VMCore/AsmWriter.cpp: Tweak to check #INF and #NAN earlier.NAKAMURA Takumi
With MSVCRT, prior checker missed emission of #INF and #NAN. FIXME: Checking should be simpler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150667 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-16Replace all instances of dg.exp file with lit.local.cfg, since all tests are ↵Eli Bendersky
run with LIT now and now Dejagnu. dg.exp is no longer needed. Patch reviewed by Daniel Dunbar. It will be followed by additional cleanup patches. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150664 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-16Template specialize SmallVector::push_back based on POD-ness of the type. ↵Pete Cooper
Reduces clang binary by 188KB git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150662 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-16VMCore/AsmWriter.cpp: Use APFloat instead of atof(3).NAKAMURA Takumi
atof(3) might behave differently among platforms. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150661 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-16Oop - r150653 + r150654 broke one of my test cases. Backing out for now...Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150655 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-16FPSCR shouldn't be reserved.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150654 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-16MachineCSE shouldn't extend the live ranges of reserved or allocatable ↵Lang Hames
registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150653 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-16Give a description of the Objective-C garbage collection module flags.Bill Wendling
The rule governing the flags is this: no-gc + no-gc = no-gc no-gc + gc = no-gc no-gc + gc-only = error gc + gc = gc gc + gc-only = gc-only gc-only + gc-only = gc-only git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150646 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-16loop-rotate shouldn't hoist alloca instructions out of a loop. Patch by ↵Eli Friedman
Patrik Hägglund, with slightly modified test. Issue reported by Patrik Hägglund on llvmdev. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150642 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-16Enable register mask operands for x86 calls.Jakob Stoklund Olesen
Call instructions no longer have a list of 43 call-clobbered registers. Instead, they get a single register mask operand with a bit vector of call-preserved registers. This saves a lot of memory, 42 x 32 bytes = 1344 bytes per call instruction, and it speeds up building call instructions because those 43 imp-def operands no longer need to be added to use-def lists. (And removed and shifted and re-added for every explicit call operand). Passes like LiveVariables, LiveIntervals, RAGreedy, PEI, and BranchFolding are significantly faster because they can deal with call clobbers in bulk. Overall, clang -O2 is between 0% and 8% faster, uniformly distributed depending on call density in the compiled code. Debug builds using clang -O0 are 0% - 3% faster. I have verified that this patch doesn't change the assembly generated for the LLVM nightly test suite when building with -disable-copyprop and -disable-branch-fold. Branch folding behaves slightly differently in a few cases because call instructions have different hash values now. Copy propagation flushes its data structures when it crosses a register mask operand. This causes it to leave a few dead copies behind, on the order of 20 instruction across the entire nightly test suite, including SPEC. Fixing this properly would require the pass to use different data structures. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150638 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Remove extraneous tests.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150636 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Add a test for generating Objective-C metadata from module flags.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150635 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Handle register masks in branch folding.Jakob Stoklund Olesen
Don't attempt to move instructions with regmask operands. They are most likely calls anyway. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150634 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Fix library visibility problems with VLIWPacketizer.Andrew Trick
The existing framework for postra scheduling is library local. We want to keep it that way. Soon we will have a more general MachineScheduler interface. At that time, various bits will be exposed to targets. In the meantime, the VLIWPacketizer wants to use ScheduleDAGInstrs directly, so it needs to wrapped in a PIMPL to avoid exposing it to the target interface. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150633 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Use the enum instead of 'unsigned'.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150632 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Make LiveIntervals::handleMove() bundle aware.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150630 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Use 'getDataNoRel' for the section kind.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150628 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Fix assertion condition.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150627 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Add a test for the Objective-C garbage collection metadata stuff.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150626 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Modify the code that emits the module flags to use the new module flags accessorBill Wendling
method. This allows the target lowering code to not have to deal with MDNodes. Also, avoid leaking memory like a sieve by not creating a global variable for the image info section, but just emitting the code directly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150624 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Add a module flags accessor method which returns the flags in a vector.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150623 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Add function for computing the edit distance of two arrays.Kaelyn Uhrain
Accomplished by moving the body of StringRef::edit_distance into a separate function that accepts two ArrayRefs, and making StringRef::edit_distance a wrapper around the new function. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150621 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Don't expose DefaultVLIWSchedulerAndrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150619 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15utils: Kill NewNightlyTest.pl, which has been replaced by LNT (as far as I ↵Daniel Dunbar
know). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150610 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Remove overly conservative assert.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150608 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Generic "VLIW" packetizer based on a DFA generated from target itinerary.Andrew Trick
Patch by Sundeep! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150607 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Optimize redundant sign extends and negation of predicates.Sirish Pande
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150606 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Revert "Replacing HexagonOptimizeSZExtends with HexagonPeephole."Eric Christopher
This reverts commit 1656806a944bbd23e98c6e578810fe02495ab741. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150605 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Revert "Optimize redundant sign extends and negation of predicates"Eric Christopher
as it's breaking the build. This reverts commit 11241abca5e2a313412fed594bb9d9fa2a2057fb. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150604 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Replacing HexagonOptimizeSZExtends with HexagonPeephole.Sirish Pande
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150603 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Optimize redundant sign extends and negation of predicatesSirish Pande
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150601 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Add braces to if clause to make symmetric with associate else clause.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150591 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15For ELF, also call fixSymbolsInTLSFixups() on expressions passed to ↵David Meyer
EmitValue (literal values). Previously only called on expressions in instructions. New test cases added to tls.s, tls-i386.s. Resolves PR11981. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150582 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Strip the pointer casts from the constants here.Bill Wendling
The c'tor list is stored as a list of 'void ()*'s, so all of the functions are bitcast to that. However, the dyn_cast doesn't automagically look through bitcasts. Do that for it. <rdar://problem/10813350> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150572 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Add a way to replace a field inside a metadata node. This can beEric Christopher
used to incrementally update a created node without needing a temporary node and RAUW. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150571 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Revert r150565 again. Appears to be a stage2 failure with dragonegg.Andrew Trick
I'll put MachineLICM back before PEI. All my arm/x86 benchmarks look good, but buildbots don't like it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150568 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Reapply r150565 with the typo fix properly merged.Andrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150567 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15reverting r150565. Premature push.Andrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150566 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Move PostRAMachineLICM into MachineLateOptimization. It now runs after PEI!Andrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150565 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Add a check to make sure we don't assign slot indexes for instructions ↵Lang Hames
inside bundles. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150564 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Allow CodeGen (llc) command line options to work as expected.Andrew Trick
The llc command line options for enabling/disabling passes are local to CodeGen/Passes.cpp. This patch associates those options with standard pass IDs so they work regardless of how the target configures the passes. A target has two ways of overriding standard passes: 1) Redefine the pass pipeline (override TargetPassConfig::add%Stage) 2) Replace or suppress individiual passes with TargetPassConfig::substitutePass. In both cases, the command line options associated with the pass override the target default. For example, say a target wants to disable machine instruction scheduling by default: - The target calls disablePass(MachineSchedulerID) but otherwise does not override any TargetPassConfig methods. - Without any llc options, no scheduler is run. - With -enable-misched, the standard machine scheduler is run and honors the -misched=... flag to select the scheduler variant, which may be used for performance evaluation or testing. Sorry overridePass is ugly. I haven't thought of a better way without replacing the cl::opt framework. I hope to do that one day... I haven't figured out why CodeGen uses char& for pass IDs. AnalysisID is much easier to use and less bug prone. I'm using it wherever I can for internal implementation. Maybe later we can change the global pass ID definitions as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150563 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Added TargetPassConfig::disablePass/substitutePass as a general mechanism to ↵Andrew Trick
override specific passes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150562 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15commentAndrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150561 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Don't emit live ranges for physregs live-ins that are dead.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150553 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Disentangle moving a machine instr from updating LiveIntervals.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150552 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-15Added hook to let targets custom lower splitting of illegal vectorsPete Cooper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150550 91177308-0d34-0410-b5e6-96231b3b80d8
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