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path: root/lib/CodeGen/VirtRegMap.cpp
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2009-03-13Convert VirtRegMap to a MachineFunctionPass.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66870 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
2009-03-09Yet another case where the spiller marked two uses of the same register on ↵Evan Cheng
the same instruction as kill. This fixes PR3706. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66428 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-08If a MI uses the same register more than once, only mark one of them as 'kill'.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66363 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-28Last commit accidentially deleted this code.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65679 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-26The last commit was overly conservative. It's ok to reuse value that's ↵Evan Cheng
already marked livein. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65498 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-26If an available register falls through to a succ block, unset the last kill. ↵Evan Cheng
Sorry, it's impossible to reduce a sensible test case. It basically requires the moon and stars to align in order to cause a failure. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65497 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17A couple of places where reused use operands should be marked kill. This is ↵Evan Cheng
exposed by recent availability fallthrough changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64745 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-13Revert this. It was breaking stuff.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64428 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-13Turn off the old way of handling debug information in the code generator. UseBill Wendling
the new way, where all of the information is passed on SDNodes and machine instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64427 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-12Adjust the sizes for a few SmallVectors to reflect their usage.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64381 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-12It's (currently) not safe to keep certain physical registers live across ↵Evan Cheng
basic blocks, e.g. x86 fp stack registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64374 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-12If availability info is kept when fallthrough into a bb, add the available ↵Evan Cheng
registers to live-in set. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64372 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-11Remove a bogus assertion. It's possible a live-in available value is used by ↵Evan Cheng
a previous instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64339 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-11Implement PR3495: local spiller optimization. The local spiller can now keep ↵Evan Cheng
availability information over BB boundaries. It visits BB's in depth first order. After visiting a BB if it find a successor which has a single predecessor it visits the successor next without clearing the availability information. This allows the successor to omit reloads or change them into copies. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64298 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-03Explicitly pass in debug location information to BuildMI.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63599 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-20Change TargetInstrInfo::isMoveInstr to return source and destination ↵Evan Cheng
sub-register indices as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62600 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-02Fix PR3124: overly strict assert.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60392 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17Fix PR2898. Spiller delete a store for reuse before it knows for sure the ↵Evan Cheng
reuse happened. Patch by Lang Hames! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57720 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17Fix a very subtle spiller bug: UpdateKills should not forget to track defs ↵Evan Cheng
of aliases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57673 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-14Fix command-line option printing to print two spaces where needed,Dan Gohman
instead of requiring all "short description" strings to begin with two spaces. This makes these strings less mysterious, and it fixes some cases where short description strings mistakenly did not begin with two spaces. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57521 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-06Don't dereference the end() iterator. Thanks toDan Gohman
ENABLE_EXPENSIVE_CHECKS for finding this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57181 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-03Switch the MachineOperand accessors back to the short names likeDan Gohman
isReg, etc., from isRegister, etc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57006 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-11Propagate subreg index when promoting a load to a copy.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56085 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-10Fix PR2664 - spiller GetRegForReload wasn't respecting sub-register indices ↵Evan Cheng
on machine operands. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56065 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04Fix an overly strict assertion. Source register of a copy may not be killed, ↵Evan Cheng
it may be killed by an implicit super-register use. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55762 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-19Make SimpleSpiller respect subregister indices.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54968 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-05Fix PR2596: out of bound reference.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54375 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-18Fix a LocalSpiller leak. This fixes tramp3d-v4.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53766 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-07Pool-allocation for MachineInstrs, MachineBasicBlocks, andDan Gohman
MachineMemOperands. The pools are owned by MachineFunctions. This drastically reduces the number of calls to malloc/free made during the "Emit" phase of scheduling, as well as later phases in CodeGen. Combined with other changes, this speeds up the "instruction selection" phase of CodeGen by 10% in some cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53212 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-18Cosmetic.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52450 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-16Fix read after free found by valgrind.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52309 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-13Teach the spiller to commute instructions in order to fold a reload. This ↵Evan Cheng
hits 410 times on 444.namd and 122 times on 252.eon. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52266 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-04Move #include to right place.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51932 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-23Remove warnings about comparison between signed and unsigned expressions.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51465 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-22Don't attempt to update SpillSlotToUsesMap for stack slots that aren'tDavid Greene
generated by the spiller. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51439 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-20More local spiller complexity!Evan Cheng
If local spiller optimization turns some instruction into an identity copy, it will be removed. If the output register happens to be dead (and source is obviously killed), transfer the kill / dead information to last use / def in the same MBB. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51306 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-13Clean up the use of static and anonymous namespaces. This turned upDan Gohman
several things that were neither in an anonymous namespace nor static but not intended to be global. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51017 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-07Yet another nasty spiller bug.Evan Cheng
%ecx = op store %cl<kill>, (addr) (addr) = op %al It's not safe to unfold the last operand and eliminate store even though %cl is marked kill. It's a sub-register use which means one of its super-register(s) may be used below. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50794 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-11Use of implicit_def is not part of live interval. Create empty intervals for ↵Evan Cheng
the uses when the live interval is being spilled. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49542 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-31Move reMaterialize() from TargetRegisterInfo to TargetInstrInfo.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48995 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-26Avoid commuting a def MI in order to coalesce a copy instruction away if any ↵Evan Cheng
use of the same val# is a copy instruction that has already been coalesced. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48833 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-21A couple of kill marker maintainence bug.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48653 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-14Fix PR2138. Apparently any modification to a std::multimap (including remove ↵Evan Cheng
entries for a different key) can invalidate multimap iterators. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48371 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-12Change VirtRegMap's dump to dump to cerr, not DOUT, so that itDan Gohman
can be called from within a debuger without having -debug specified on the command-line. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48298 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-12Set NextMII after issuing a physical register spill.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48263 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-12Minor debug output bug.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48261 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11Transfer physical register spill info when load / store folding happens.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48246 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11When the register allocator runs out of registers, spill a physical register ↵Evan Cheng
around the def's and use's of the interval being allocated to make it possible for the interval to target a register and spill it right away and restore a register for uses. This likely generates terrible code but is before than aborting. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48218 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-05Refactor code. Remove duplicated functions that basically do the same thing asEvan Cheng
findRegisterUseOperandIdx, findRegisterDefOperandIndx. Fix some naming inconsistencies. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47927 91177308-0d34-0410-b5e6-96231b3b80d8
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