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2003-12-21Remove verifyIntervals() since it doesn't actually work right now.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10570 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-21Change weight into a float so that we can take into account theAlkis Evlogimenos
nesting level when computing it. Right now the allocator uses: w = sum_over_defs_uses( 10 ^ nesting level ); git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10569 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-21Add support for inactive intervals. This effectively reuses registersAlkis Evlogimenos
for live ranges that fall into assigned registers' holes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10566 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-20Add a new target-independent machine code freeing passChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10560 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-20* Finegrainify namespacificationChris Lattner
* Move sparc specific code out of generic code * Eliminate the getOffset() method which made INVALID_FRAME_OFFSET necessary, which made pulling in MAX_INT as a sentinal necessary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10553 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-18Remove TwoAddressInstruction from the public headers and add an IDAlkis Evlogimenos
instead, since this pass doesn't expose any state to its users. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10520 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-18Prune some #includesChris Lattner
Add a statistic for # reloads git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10518 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-18Modify linear scan register allocator to use the two-addressAlkis Evlogimenos
instruction pass. This also fixes all remaining bugs for this new allocator to pass all tests under test/Programs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10515 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-18Fix bug in reserved registers. DH actually aliases DX and EDX whichAlkis Evlogimenos
are not reserved registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10514 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-18Modify local register allocator to use the two-address instruction pass.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10513 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-18Add TwoAddressInstructionPass to handle instructions that have two orAlkis Evlogimenos
more operands and the two first operands are constrained to be the same. The pass takes an instruction of the form: a = b op c and transforms it into: a = b a = a op c and also preserves live variables. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10512 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-18Rename LiveIntervals::expired() to LiveIntervals::expiredAt().Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10511 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-18When a variable is killed and redifined in a basic block only oneAlkis Evlogimenos
killing instruction is tracked. This causes the LiveIntervals to create bogus intervals. The workaound is to add a range to the interval from the redefinition to the end of the basic block. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10510 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-18Handle multiple virtual register definitions gracefully.Alkis Evlogimenos
Move some of the longer LiveIntervals::Interval method out of the header and add debug information to them. Fix bug and simplify range merging code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10509 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-15Change preserve all claim to just preserve live variables and phielimination.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10469 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-14Change interface of MachineOperand as follows:Alkis Evlogimenos
a) remove opIsUse(), opIsDefOnly(), opIsDefAndUse() b) add isUse(), isDef() c) rename opHiBits32() to isHiBits32(), opLoBits32() to isLoBits32(), opHiBits64() to isHiBits64(), opLoBits64() to isLoBits64(). This results to much more readable code, for example compare "op.opIsDef() || op.opIsDefAndUse()" to "op.isDef()" a pattern used very often in the code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10461 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-13When reserving a preallocated register spill the aliases of thisAlkis Evlogimenos
register too. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10450 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-13Ignore non-allocatable physical registers in live interval analysis.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10449 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-13Expire any active intervals left when register allocation is done.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10448 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-13Add instruction numbers to debugging output.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10447 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-13Handle explicit physical register defs.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10445 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-13Remove unecessary if statements when looping on ImplicitDefs.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10444 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10This appears to fix Bug 172 and does not break any other feature tests orJohn Criswell
regression tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10388 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-05Make assertion stricter. Since the source operands are allocated atAlkis Evlogimenos
this point, the second operand must be a physical register (it cannot be a virtual one). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10292 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-05Fix bug in register spilling when a preallocated live range overlaps aAlkis Evlogimenos
potential register assignment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10291 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-05Move operator<<(std::ostream&, const LiveInterval&) out of the header file.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10290 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-05Sort live intervals by increasing start point.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10289 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-04Improve debugging output and clean up some code.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10288 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-30Print instructions before register allocation is performed. Also fixAlkis Evlogimenos
bug where spill instructions were added to the next basic block instead of the end of the current one if the instruction that required the spill was the last in the block. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10272 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-30Remove "numReloaded" statistic.Alkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10268 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-20Merging the linear scan register allocator in trunk. It currently passes ↵Alkis Evlogimenos
most tests under test/Programs/SingleSource/Benchmarks/Shootout so development will continue on trunk. The allocator is not enabled by default. You will need to pass -regallo=linearscan to lli or llc to use it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10103 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-11Put all LLVM code into the llvm namespace, as per bug 109.Brian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9903 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-10Fix problems linking against the reoptimizer; _llvm_regAllocState must haveBrian Gaeke
externally-visible linkage, and SaveStateToModule must default to true for llc. I don't remember why I made it const; perhaps it should be deconstified. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9858 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-10Operand numbers are now ints. Save the register allocation of the valueBrian Gaeke
each instruction produces as "operand" -1, and the other operands as 0 .. n, as before. PhyRegAlloc::saveState() is refactored into PhyRegAlloc::saveStateForValue(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9842 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-06Let's not forget about our friends -- Constant Pool indices.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9750 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-05Do not use a class before it is defined.Chris Lattner
Be gcc 3.4 clean git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9727 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-04Update verifySavedState()'s comment, so that it reflects its currentBrian Gaeke
status. In doFinalization(), skip over external functions, just like Anand's mapping info does. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9703 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-04Add comments.Brian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9697 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-30Include llvm/CodeGen/MachineCodeForInstruction.h. Use it to startBrian Gaeke
implementing verifySavedState(). In saveState(), use the new AllocInfo::AllocStateTy enum, and increment Insn each time through the loop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9617 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-30Make AllocState an enum.Brian Gaeke
Move the stringifying method for that enum into class AllocInfo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9616 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-24Publicize the type of FnAllocState.Brian Gaeke
Prototype option to save state in a global instead of as a Constant in the Module. (Turned off, for now, with the on/off switch welded in the off position. You get the idea.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9500 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-24standardize command line option namesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9496 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-23Move the implementations of ==, != on AllocInfos here, from UnpackTraceFunction.Brian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9452 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-23Move AllocInfo structure to a private AllocInfo.h header file.Brian Gaeke
Make FnAllocState contain vectors of AllocInfo, instead of LLVM Constants. Give doFinalization a method comment, and let it do the work of converting AllocInfos to LLVM Constants. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9451 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-23Make FnAllocState contain vectors of AllocInfo, instead of LLVM Constants.Brian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9450 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-23New file, containing AllocInfo structure.Brian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9449 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-23* Eliminate `using' directiveMisha Brukman
* Fix order of #includes * Make code layout more consistent * Eliminate extraneous whitespace and comment-lines git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9433 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-23* Fix order of #include filesMisha Brukman
* Doxygen-ify method comments git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9432 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-23* Order #includes as per style guideMisha Brukman
* Doxygen-ify comments * Make code layout more consistent git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9431 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-23* Use C++ style comments instead of C-styleMisha Brukman
* Make file description more readable * Make code layout more consistent, include comment in assert so it's visible during execution if it hits git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9430 91177308-0d34-0410-b5e6-96231b3b80d8
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