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path: root/lib/CodeGen/Spiller.h
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2011-12-20Unweaken vtables as per ↵David Blaikie
http://llvm.org/docs/CodingStandards.html#ll_virtual_anch git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146960 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-10Change the Spiller interface to take a LiveRangeEdit reference.Jakob Stoklund Olesen
This makes it possible to register delegates and get callbacks when the spiller edits live ranges. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127389 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-10Make SpillIs an optional pointer. Avoid creating a bunch of temporary ↵Jakob Stoklund Olesen
SmallVectors. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127388 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-10Force the greedy register allocator to always use the inline spiller.Jakob Stoklund Olesen
Soon, RegAllocGreedy will start splitting live ranges, and then deferred spilling won't work anyway. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121591 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-10RABasic is nearly functionally complete. There are a few remainingAndrew Trick
benchmarks hitting an assertion. Adds LiveIntervalUnion::collectInterferingVRegs. Fixes "late spilling" by checking for any unspillable live vregs among all physReg aliases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118701 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-25In which I learn how to forward declare template classes.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117272 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-13Clean up the Spiller.h interface.Jakob Stoklund Olesen
The earliestStart argument is entirely specific to linear scan allocation, and can be easily calculated by RegAllocLinearScan. Replace std::vector with SmallVector. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111055 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Change the createSpiller interface to take a MachineFunctionPass argument.Jakob Stoklund Olesen
The spillers can pluck the analyses they need from the pass reference. Switch some never-null pointers to references. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108969 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-19Spillers may alter MachineLoopInfo when breaking critical edges, so make itJakob Stoklund Olesen
non-const. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108734 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-30Add support for rematerialization to InlineSpiller.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107351 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-24Don't return a std::vector in the Spiller interface, but take a reference to aJakob Stoklund Olesen
vector instead. This avoids needless copying and allocation. Add documentation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106788 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-09Added a new "splitting" spiller.Lang Hames
When a call is placed to spill an interval this spiller will first try to break the interval up into its component values. Single value intervals and intervals which have already been split (or are the result of previous splits) are spilled by the default spiller. Splitting intervals as described above may improve the performance of generated code in some circumstances. This work is experimental however, and it still miscompiles many benchmarks. It's not recommended for general use yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90951 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-20Removed references to LiveStacks from Spiller.* . They're no longer needed.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89422 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-19Added a new Spiller implementation which wraps ↵Lang Hames
LiveIntervals::addIntervalsForSpills. All spiller calls in RegAllocLinearScan now go through the new Spiller interface. The "-new-spill-framework" command line option has been removed. To use the trivial in-place spiller you should now pass "-spiller=trivial -rewriter=trivial". (Note the trivial spiller/rewriter are only meant to serve as examples of the new in-place modification work. Enabling them will yield terrible, though hopefully functional, code). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89311 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-18Fixed the in-place spiller and trivial rewriter, which had been broken by ↵Lang Hames
the recent SlotIndexes work. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89238 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-19Fix some minor MSVC compiler warnings.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76356 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-12Match declaration to definition.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75440 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-19More VNInfo tweaking, plus a little progress on intra-block splitting.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73750 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-17VNInfo cleanup.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73634 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-02Update to in-place spilling framework. Includes live interval scaling and ↵Lang Hames
trivial rewriter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72729 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-19Forward decls.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72114 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-19Remove 'class' specifier.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72113 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-19Fix to compile on VS2008.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72112 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-18New Spiller interface and trivial implementation.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72030 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-06Renamed Spiller classes (plus uses and related files) to VirtRegRewriter.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71057 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21It has finally happened. Spiller is now using live interval info.Evan Cheng
This fixes a very subtle bug. vr defined by an implicit_def is allowed overlap with any register since it doesn't actually modify anything. However, if it's used as a two-address use, its live range can be extended and it can be spilled. The spiller must take care not to emit a reload for the vn number that's defined by the implicit_def. This is both a correctness and performance issue. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69743 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-17Teach spiller to unfold instructions which modref spill slot when a scratchEvan Cheng
register is available and when it's profitable. e.g. xorq %r12<kill>, %r13 addq %rax, -184(%rbp) addq %r13, -184(%rbp) ==> xorq %r12<kill>, %r13 movq -184(%rbp), %r12 addq %rax, %r12 addq %r13, %r12 movq %r12, -184(%rbp) Two more instructions, but fewer memory accesses. It can also open up opportunities for more optimizations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69341 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-31Oy! When reverting r68073, I added in experimental code. Sorry...Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68099 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-31Revert r68073. It's causing a failure in the Apple-style builds.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68092 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-17Spiller may unfold load / mod / store instructions as an optimization when ↵Evan Cheng
the would be loaded value is available in a register. It needs to check if it's legal to clobber the register. Also, the register can contain values of multiple spill slots, make sure to check all instead of just the one being unfolded. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67068 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-12Reorganize some #include's.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66780 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-11Reorganization: Move the Spiller out of VirtRegMap.cpp into its own files. ↵Owen Anderson
No (intended) functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66720 91177308-0d34-0410-b5e6-96231b3b80d8
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