Evan Cheng ba1a3df608 Joining a live interval of a physical register with a virtual one can turn out ...

to be really bad. Once they are joined they are not broken apart. Also, physical
intervals cannot be spilled!

Added a heuristic as a workaround for this. Be careful coalescing with a
physical register if the virtual register uses are "far". Check if there are
uses in the same loop as the source (copy instruction). Check if it is in the
loop preheader, etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35134 91177308-0d34-0410-b5e6-96231b3b80d8

2007-03-17 09:27:35 +00:00

..

SelectionDAG

Use SmallSet instead of std::set.

2007-03-17 08:53:30 +00:00

AsmPrinter.cpp

Small eye-candy: use asciz directive everywhere, where possible.

2007-03-06 19:25:02 +00:00

BranchFolding.cpp

Remove isAccessable.

2007-02-22 16:39:03 +00:00

DwarfWriter.cpp

Cleanup: make SetCounter an instance variable

2007-03-07 08:25:02 +00:00

ELFWriter.cpp

Generalize TargetData strings, to support more interesting forms of data.

2007-02-14 05:52:17 +00:00

ELFWriter.h

Moved from include/llvm/CodeGen to lib/CodeGen.

2007-02-08 01:30:50 +00:00

IntrinsicLowering.cpp

Lower eh filter intrinsic.

2007-03-01 20:24:30 +00:00

LiveInterval.cpp

Added an automatic cast to "std::ostream*" etc. from OStream. We then can

2006-12-17 05:15:13 +00:00

LiveIntervalAnalysis.cpp

Joining a live interval of a physical register with a virtual one can turn out

2007-03-17 09:27:35 +00:00

LiveVariables.cpp

If a virtual register is already marked alive in this block, that means it is

2007-03-09 09:48:56 +00:00

LLVMTargetMachine.cpp

Now LoopStrengthReduce is a LoopPass.

2007-03-06 21:14:09 +00:00

MachineBasicBlock.cpp

Print preds / succs BB numbers.

2007-03-09 08:29:08 +00:00

MachineFunction.cpp

Generalize TargetData strings, to support more interesting forms of data.

2007-02-14 05:52:17 +00:00

MachineInstr.cpp

Use findRegisterUseOperand to find a kill of particular register.

2007-02-23 01:04:26 +00:00

MachineModuleInfo.cpp

Collect eh filter info.

2007-03-01 20:25:32 +00:00

MachinePassRegistry.cpp

Final polish on machine pass registries.

2006-08-02 12:30:23 +00:00

MachOWriter.cpp

Remove unneeded header file.

2007-03-04 04:41:04 +00:00

MachOWriter.h

More Mach-O writer improvements.

2007-02-28 07:40:50 +00:00

Makefile

this will work better

2006-11-03 19:15:55 +00:00

Passes.cpp

*** empty log message ***

2006-11-16 20:11:33 +00:00

PHIElimination.cpp

rename DenseMap to IndexedMap.

2007-02-01 05:32:05 +00:00

PhysRegTracker.h

…

PrologEpilogInserter.cpp

If target decides to create an emergency spill slot, make sure it's closest to SP or frame pointer.

2007-03-06 10:02:38 +00:00

RegAllocLinearScan.cpp

Only add liveinterval to livein set if it isn't assigned a stack slot.

2007-02-25 09:39:02 +00:00

RegAllocLocal.cpp

Use BitVector instead of vector<bool> which can be extremely slow.

2007-02-15 05:59:24 +00:00

RegAllocSimple.cpp

Eliminate static ctors from Statistics

2006-12-19 22:41:21 +00:00

RegisterScavenging.cpp

Minor bug fix.

2007-03-06 21:58:15 +00:00

TwoAddressInstructionPass.cpp

Eliminate static ctors from Statistics

2006-12-19 22:41:21 +00:00

UnreachableBlockElim.cpp

eliminate RegisterOpt. It does the same thing as RegisterPass.

2006-08-27 22:42:52 +00:00

VirtRegMap.cpp

Only propagate IsKill if the last use is a kill.

2007-03-03 06:32:37 +00:00

VirtRegMap.h

rename DenseMap to IndexedMap.

2007-02-01 05:32:05 +00:00