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* Avoid zero-sized allocations when copying a fresh DenseMap.Benjamin Kramer2011-03-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127110 91177308-0d34-0410-b5e6-96231b3b80d8
* Preliminary support for ARM frame save directives emission via MI flags.Anton Korobeynikov2011-03-05
| | | | | | | This is just very first approximation how the stuff should be done (e.g. ARM-only for now). More to follow. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127101 91177308-0d34-0410-b5e6-96231b3b80d8
* Provide hooks to set MI flags in MachineInstrBuilderAnton Korobeynikov2011-03-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127100 91177308-0d34-0410-b5e6-96231b3b80d8
* Some first rudimentary support for ARM EHABI: print exception table in "text ↵Anton Korobeynikov2011-03-05
| | | | | | mode". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127099 91177308-0d34-0410-b5e6-96231b3b80d8
* Add FrameSetup MI flagsAnton Korobeynikov2011-03-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127098 91177308-0d34-0410-b5e6-96231b3b80d8
* Shorten AsmPrinterFlags filed to accomodate for future Flags fieldAnton Korobeynikov2011-03-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127097 91177308-0d34-0410-b5e6-96231b3b80d8
* Lazily allocate DenseMaps.Benjamin Kramer2011-03-05
| | | | | | | | | | This makes lookup slightly more expensive but it's worth it, unused DenseMaps are common in LLVM code apparently. 1% speedup on clang -O3 bzip2.c 4% speedup on clang -O3 oggenc.c (Release build of clang on i386/linux) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127088 91177308-0d34-0410-b5e6-96231b3b80d8
* ptx: add basic intrinsic supportChe-Liang Chiou2011-03-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127084 91177308-0d34-0410-b5e6-96231b3b80d8
* Missing "virtual" keyword. Jakob's review.Andrew Trick2011-03-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127070 91177308-0d34-0410-b5e6-96231b3b80d8
* Increased the register pressure limit on x86_64 from 8 to 12Andrew Trick2011-03-05
| | | | | | | | | | | | | | | | | | | | | | | | regs. This is the only change in this checkin that may affects the default scheduler. With better register tracking and heuristics, it doesn't make sense to artificially lower the register limit so much. Added -sched-high-latency-cycles and X86InstrInfo::isHighLatencyDef to give the scheduler a way to account for div and sqrt on targets that don't have an itinerary. It is currently defaults to 10 (the actual number doesn't matter much), but only takes effect on non-default schedulers: list-hybrid and list-ilp. Added several heuristics that can be individually disabled for the non-default sched=list-ilp mode. This helps us determine how much better we can do on a given benchmark than the default scheduler. Certain compute intensive loops run much faster in this mode with the right set of heuristics, and it doesn't seem to have much negative impact elsewhere. Not all of the heuristics are needed, but we still need to experiment to decide which should be disabled by default for sched=list-ilp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127067 91177308-0d34-0410-b5e6-96231b3b80d8
* test commitJin-Gu Kang2011-03-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127059 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach the register scavenger to take subregs into account when finding a ↵Jim Grosbach2011-03-05
| | | | | | free register. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127049 91177308-0d34-0410-b5e6-96231b3b80d8
* Support unregistering exception frames of functions when they are removed.Eric Christopher2011-03-04
| | | | | | | | | Patch by Johannes Schaub! Fixes PR8548 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127047 91177308-0d34-0410-b5e6-96231b3b80d8
* Renumber slot indexes locally when possible.Jakob Stoklund Olesen2011-03-04
| | | | | | | | | | | | | Initially, slot indexes are quad-spaced. There is room for inserting up to 3 new instructions between the original instructions. When we run out of indexes between two instructions, renumber locally using double-spaced indexes. The original quad-spacing means that we catch up quickly, and we only have to renumber a handful of instructions to get a monotonic sequence. This is much faster than renumbering the whole function as we did before. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127023 91177308-0d34-0410-b5e6-96231b3b80d8
* Symbolize the default instruction distance.Jakob Stoklund Olesen2011-03-04
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127013 91177308-0d34-0410-b5e6-96231b3b80d8
* Deferred SlotIndex renumbering was a good idea but never used.Jakob Stoklund Olesen2011-03-04
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127008 91177308-0d34-0410-b5e6-96231b3b80d8
* Add ArrayRef variant.Devang Patel2011-03-04
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126978 91177308-0d34-0410-b5e6-96231b3b80d8
* Use an IndexedMap instead of a DenseMap for the live-out cache.Jakob Stoklund Olesen2011-03-04
| | | | | | | This speeds up updateSSA() so it only accounts for 5% of the live range splitting time. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126972 91177308-0d34-0410-b5e6-96231b3b80d8
* There are times when the landing pad won't have a call to 'eh.selector' inBill Wendling2011-03-03
| | | | | | | | | | | | | | | it. It's been assumed up til now that it would be in its immediate successor. However, this isn't necessarily the case. It could be in one of its successor's successors. Modify the code to more thoroughly check for an 'eh.selector' call in successors. It only looks at a successor if we get there as a result of an unconditional branch. Testcase ObjC/exceptions-4.m in r126968. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126969 91177308-0d34-0410-b5e6-96231b3b80d8
* Allow a target to choose whether to prefer the scavenger emergency spill slotJim Grosbach2011-03-03
| | | | | | | | be next to the frame pointer or the stack pointer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126956 91177308-0d34-0410-b5e6-96231b3b80d8
* Optimize fprintf -> iprintf if there are no floating point argumentsRichard Osborne2011-03-03
| | | | | | | | and siprintf is available on the target. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126940 91177308-0d34-0410-b5e6-96231b3b80d8
* Optimize sprintf -> siprintf if there are no floating point argumentsRichard Osborne2011-03-03
| | | | | | | | and siprintf is available on the target. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126937 91177308-0d34-0410-b5e6-96231b3b80d8
* Optimize printf -> iprintf if there are no floating point argumentsRichard Osborne2011-03-03
| | | | | | | | and iprintf is available on the target. Currently iprintf is only marked as being available on the XCore. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126935 91177308-0d34-0410-b5e6-96231b3b80d8
* Use X86_thiscall calling convention for Win64 as well.Tilmann Scheller2011-03-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126934 91177308-0d34-0410-b5e6-96231b3b80d8
* Represent sentinel slot indexes with a null pointer.Jakob Stoklund Olesen2011-03-03
| | | | | | | | This is much faster than using a pointer to a ManagedStatic object accessed with a function call. The greedy register allocator is 5% faster overall just from the SlotIndex default constructor savings. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126925 91177308-0d34-0410-b5e6-96231b3b80d8
* Avoid comparing invalid slot indexes, and assert that it doesn't happen.Jakob Stoklund Olesen2011-03-03
| | | | | | | The SlotIndex created by the default construction does not represent a position in the function, and it doesn't make sense to compare it to other indexes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126924 91177308-0d34-0410-b5e6-96231b3b80d8
* Optimize SlotIndex equality tests.Jakob Stoklund Olesen2011-03-03
| | | | | | | IndexListEntries have unique indexes, so it is not necessary to dereference pointers to them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126923 91177308-0d34-0410-b5e6-96231b3b80d8
* add some slice helper methods.Chris Lattner2011-03-02
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126878 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove DIFactory. Patch by Devang.Duncan Sands2011-03-02
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126871 91177308-0d34-0410-b5e6-96231b3b80d8
* Add Win64 thiscall calling convention.Tilmann Scheller2011-03-02
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126862 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a special streamer to libLTO that just records symbols definitions andRafael Espindola2011-03-02
| | | | | | | | | | | uses. The result produced by the streamer is used to give the linker more accurate information and to add to llvm.compiler.used. The second improvement removes the need for the user to add __attribute__((used)) to functions only used in inline asm. The first one lets us build firefox with LTO on Darwin :-) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126830 91177308-0d34-0410-b5e6-96231b3b80d8
* Make pred_iterator DefaultConstructible, and add an accessor toDan Gohman2011-03-02
| | | | | | | retrieve the underlying getOperandNo() value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126804 91177308-0d34-0410-b5e6-96231b3b80d8
* Move LiveIntervalMap::extendTo into LiveInterval itself.Jakob Stoklund Olesen2011-03-02
| | | | | | | This method could probably be used by LiveIntervalAnalysis::shrinkToUses, and now it can use extendIntervalEndTo() which coalesces ranges. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126803 91177308-0d34-0410-b5e6-96231b3b80d8
* Today, the language front ends produces llvm.dbg.* intrinsics, used to ↵Devang Patel2011-03-01
| | | | | | | | | encode arguments' debug info, in order any way, most of the times. However, if a front end mix-n-matches llvm.dbg.declare and llvm.dbg.value intrinsics to encode debug info for arguments then code generator needs a way to find argument order. Use 8 bits from line number field to keep track of argument ordering while encoding debug info for an argument. That leaves 24 bit for line no, DebugLoc also allocates 24 bit for line numbers. If a function has more than 255 arguments then rest of the arguments will be ordered by llvm.dbg.* intrinsics' ordering in IR. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126793 91177308-0d34-0410-b5e6-96231b3b80d8
* Escape graph edge labels.Dan Gohman2011-03-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126788 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove the showline argument from the SMDiagnostic constructorDan Gohman2011-03-01
| | | | | | | which constructs a diagnostic with no line to show. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126787 91177308-0d34-0410-b5e6-96231b3b80d8
* Code simplification.Dan Gohman2011-03-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126786 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify this code.Dan Gohman2011-03-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126785 91177308-0d34-0410-b5e6-96231b3b80d8
* Change directory_entry::path() to return a const std::string & instead ofDan Gohman2011-03-01
| | | | | | | | | a StringRef, for the benefit of clients that want the result as a nul-terminated string. Clients that expect a StringRef will get one via the implicit conversion. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126784 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert PathV2 changes, as sys::fs::unique_file is not finished yet.Dan Gohman2011-03-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126773 91177308-0d34-0410-b5e6-96231b3b80d8
* add a missing const qualifier for consistency.Chris Lattner2011-03-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126742 91177308-0d34-0410-b5e6-96231b3b80d8
* Generalize the register matching code in DAGISel a bit.Jim Grosbach2011-03-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126731 91177308-0d34-0410-b5e6-96231b3b80d8
* Add an END_WITH_NULL accessor for ConstantStruct.Talin2011-02-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126714 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix warning when building with clang++.Owen Anderson2011-02-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126679 91177308-0d34-0410-b5e6-96231b3b80d8
* Delete the GEPSplitter experiment.Dan Gohman2011-02-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126671 91177308-0d34-0410-b5e6-96231b3b80d8
* Delete the SimplifyHalfPowrLibCalls pass, which was unused, andDan Gohman2011-02-28
| | | | | | | only existed as the result of a misunderstanding. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126669 91177308-0d34-0410-b5e6-96231b3b80d8
* Delete the LiveValues pass. I won't get get back to the project itDan Gohman2011-02-28
| | | | | | | was started for in the foreseeable future. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126668 91177308-0d34-0410-b5e6-96231b3b80d8
* Support for byval parameters on ARM. Will be enabled by a forthcomingStuart Hastings2011-02-28
| | | | | | | patch to the front-end. Radar 7662569. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126655 91177308-0d34-0410-b5e6-96231b3b80d8
* add the ability to walk the scope tree and insert at not-the-currentChris Lattner2011-02-27
| | | | | | | scope. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126591 91177308-0d34-0410-b5e6-96231b3b80d8
* add a data() method.Chris Lattner2011-02-27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126590 91177308-0d34-0410-b5e6-96231b3b80d8
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