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2004-02-12Add support for the llvm.memmove intrinsicChris Lattner
Patch graciously contributed by Reid Spencer! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11355 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-12Implement the llvm.memcpy intrinsicChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11349 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-12Rename the opCode instance variable to OpcodeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11348 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-12This field is never readChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11346 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-12Change MachineBasicBlock's vector of MachineInstr pointers into anAlkis Evlogimenos
ilist of MachineInstr objects. This allows constant time removal and insertion of MachineInstr instances from anywhere in each MachineBasicBlock. It also allows for constant time splicing of MachineInstrs into or out of MachineBasicBlocks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11340 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-12getOpCode() --> getOpcode().Brian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11339 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-10Add #includeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11285 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-10Do not use MachineOperand::isVirtualRegister either!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11283 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-10Eliminate users of MachineOperand::isPhysicalRegisterChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11278 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-09Move InstrSchedule's iterator begin/end methods inline.Brian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11239 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-09Make SchedGraph::dump() use SchedGraphNodeCommon's const_iteratorBrian Gaeke
instead of randomly groping about inside its outEdges array. Make SchedGraph::addDummyEdges() use getNumOutEdges() instead of outEdges.size(). Get rid of ifdefed-out code in SchedGraph::buildGraph(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11238 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-09Another nice speedup for the register allocator. This time, we replaceChris Lattner
the Virt2PhysRegMap std::map with an std::vector. This speeds up the register allocator another (almost) 40%, from .72->.45s in a release build of LLC on 253.perlbmk. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11219 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-09Ugh, perform an optimization that GCC should be able to do itself. ThisChris Lattner
speeds up livevar from .48/.32s -> .45/.31s in LLC on perlbmk git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11217 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-09Only do stuff for the REAL number of physical registers we have, not 1024.Chris Lattner
This speeds up live variables a lot, from .60/.39s -> .47/.26s in LLC, for the first/second pass respectively. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11216 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-09Change the PhysRegsUsed map into a dense array. Seeing that this is a mappingChris Lattner
from physical registers, and they are always dense, it makes sense to not have a ton of RBtree overhead. This change speeds up regalloclocal about ~30% on 253.perlbmk, from .35s -> .27s in the JIT (in LLC, it goes from .74 -> .55). Now live variable analysis is the slowest codegen pass. Of course it doesn't help that we have to run it twice, because regalloclocal doesn't update it, but even if it did it would be the slowest pass (now it's just the 2x slowest pass :( git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11215 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-06Increase code clarity.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11151 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-06Eliminate uneeded lookups by passing a Virt2PhysMap::iterator insteadAlkis Evlogimenos
of the virtual register to certain functions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11143 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05Change live interval representation. Machine instructions now have twoAlkis Evlogimenos
slots each. As a concequence they get numbered as 0, 2, 4 and so on. The first slot is used for operand uses and the second for defs. Here's an example: 0: A = ... 2: B = ... 4: C = A + B ;; last use of A The live intervals should look like: A = [1, 5) B = [3, x) C = [5, y) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11141 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05We don't need to scan the blocks that we are live-in on everyAlkis Evlogimenos
access. Rather we only have to do it on the creation of the interval. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11135 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05Added missing include.Tanya Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11129 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-04Modify the two address instruction pass to remove the duplicateAlkis Evlogimenos
operand of the instruction and thus simplify the register allocation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11124 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-03When an instruction like: A += B had both A and B virtual registersAlkis Evlogimenos
spilled, A was loaded from its stack location twice. This fixes the bug. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11093 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02Revert changes. Will implement this using a different set of primitivesAlkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11091 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02Fix debugging output.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11088 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02Correctly update def/use information for modified machine operands.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11087 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02Should be more careful. The previously applied change made all countsAlkis Evlogimenos
outside of loops = 0. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11085 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-02Create an object for tracking physical register usage. This will lookAlkis Evlogimenos
much better when I get rid of the reserved registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11066 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-01Change weight array into a vector and make it as big as the number ofAlkis Evlogimenos
registers (not as the max number of registers). Change toSpill from a std::set into a std::vector<bool>. Use the reverse iterator adapter to do a reverse scan of allocatable registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11061 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-01Use std::map::count() instead of std::map::find() != std::map::end()Alkis Evlogimenos
where appropriate. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11060 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-01Change string for joined intervals.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11057 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-01Change xor to ^.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11054 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-01Fix a bug in a recent checkinChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11050 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-01Missed one silly assert :-)Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11048 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-01Simplify joinIntervals() code.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11047 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-01Use MRegisterInfo::isPhysicalRegister andAlkis Evlogimenos
MRegisterInfo::isVirtualRegister. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11045 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-31Apply final part of Chris' patch.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11040 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-31Be a little smarter on the way we handle physical register defs.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11038 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-31Finegrainify namespacification, use new MRegisterInfo::isVirtualRegisterChris Lattner
method git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11037 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-31Fix, correctly this time, the computation of the return valueChris Lattner
Fix a spello Tighten up the assertion checking No functionality changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11036 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-31* Fix incorrect computation of the runOnMachineFunction return valueChris Lattner
* Turn a bunch of instance variables into automatic variables git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11035 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-31Remove unneeded #includesChris Lattner
Move Passes.h (which defines the interface to this file) to the top. Move statistics to the top of the file. Add a comment git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11034 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-31Merge safe parts from last night's buggy commit. These do not breakAlkis Evlogimenos
any test cases :-) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11032 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-31Optimize liveAt() and overlaps(). We now use a binary search insteadAlkis Evlogimenos
of a linear search to find the first range for comparisons. This cuts down the linear scan register allocator running time by a factor of 3 in 254.perlbmk and by a factor of 2.2 in 176.gcc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11030 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-31Revert last night's changes as they broke some tests. Will remerge parts of ↵Alkis Evlogimenos
the patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11029 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-31Several performance enhancements and cleanups from Chris.Alkis Evlogimenos
Simplification of LiveIntervals::Interval::overlaps() and addition of examples to overlaps() and liveAt() to make them clearer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11028 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-30Finegrainify namespacificationChris Lattner
Implement LiveVariables::getIndexMachineBasicBlock git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11018 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-30Give clients of MachineFunctionPrinter the ability to specify a banner andBrian Gaeke
choose an ostream. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11016 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-23Fix failing test cases with joined live intervals. It turns out thatAlkis Evlogimenos
when joining we need to check if we overlap with the second interval or any of its aliases. Also make joining intervals the default. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10973 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-22Add option to join live intervals. Two intervals are joined if thereAlkis Evlogimenos
is a move between two registers, at least one of the registers is virtual and the two live intervals do not overlap. This results in about 40% reduction in intervals, 30% decrease in the register allocators running time and a 20% increase in peephole optimizations (mainly move eliminations). The option can be enabled by passing -join-liveintervals where appropriate. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10965 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-22Remove unneeded check. An interval in active, by definition overlapsAlkis Evlogimenos
with the current one. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10959 91177308-0d34-0410-b5e6-96231b3b80d8
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