rename TargetInstrDescriptor -> TargetInstrDesc.
Make MachineInstr::getDesc return a reference instead
of a pointer, since it can never be null.

llvm-svn: 45695

Move a bunch more accessors from TargetInstrInfo to TargetInstrDescriptor

llvm-svn: 45680

Rename SSARegMap -> MachineRegisterInfo in keeping with the idea
that "machine" classes are used to represent the current state of
the code being compiled. Given this expanded name, we can start
m

Rename SSARegMap -> MachineRegisterInfo in keeping with the idea
that "machine" classes are used to represent the current state of
the code being compiled. Given this expanded name, we can start
moving other stuff into it. For now, move the UsedPhysRegs and
LiveIn/LoveOuts vectors from MachineFunction into it.

Update all the clients to match.

This also reduces some needless #includes, such as MachineModuleInfo
from MachineFunction.

llvm-svn: 45467

show more ...

Add new shorter predicates for testing machine operands for various types:
e.g. MO.isMBB() instead of MO.isMachineBasicBlock(). I don't plan on
switching everything over, so new clients should jus

Add new shorter predicates for testing machine operands for various types:
e.g. MO.isMBB() instead of MO.isMachineBasicBlock(). I don't plan on
switching everything over, so new clients should just start using the
shorter names.

Remove old long accessors, switching everything over to use the short
accessor: getMachineBasicBlock() -> getMBB(),
getConstantPoolIndex() -> getIndex(), setMachineBasicBlock -> setMBB(), etc.

llvm-svn: 45464

show more ...

More cleanups for MachineOperand:
- Eliminate the static "print" method for operands, moving it
into MachineOperand::print.
- Change various set* methods for register flags to take a bool

More cleanups for MachineOperand:
- Eliminate the static "print" method for operands, moving it
into MachineOperand::print.
- Change various set* methods for register flags to take a bool
for the value to set it to. Remove unset* methods.
- Group methods more logically by operand flavor in MachineOperand.h

llvm-svn: 45461

show more ...

Start using the simplified methods for adding operands.

llvm-svn: 45432

Remove attribution from file headers, per discussion on llvmdev.

llvm-svn: 45418

Live interval splitting:

When a live interval is being spilled, rather than creating short, non-spillable
intervals for every def / use, split the interval at BB boundaries. That is, for
every BB wh

Live interval splitting:

When a live interval is being spilled, rather than creating short, non-spillable
intervals for every def / use, split the interval at BB boundaries. That is, for
every BB where the live interval is defined or used, create a new interval that
covers all the defs and uses in the BB.

This is designed to eliminate one common problem: multiple reloads of the same
value in a single basic block. Note, it does *not* decrease the number of spills
since no copies are inserted so the split intervals are *connected* through
spill and reloads (or rematerialization). The newly created intervals can be
spilled again, in that case, since it does not span multiple basic blocks, it's
spilled in the usual manner. However, it can reuse the same stack slot as the
previously split interval.

This is currently controlled by -split-intervals-at-bb.

llvm-svn: 44198

show more ...

Bring UsedBlocks back. StrongPHIElimination needs this information.

llvm-svn: 43866

Handle cases where a register and one of its super-register are both marked as
defined on the same instruction. This fixes PR1767.

llvm-svn: 43699

Remove isReg, isImm, and isMBB, and change all their users to use
isRegister, isImmediate, and isMachineBasicBlock, which are equivalent,
and more popular.

llvm-svn: 41958

Fixed a typo that's causing a missing kill marker.

llvm-svn: 41893

Sometimes a MI can define a register as well as defining a super-register at the
same time. Do not mark the "smaller" def as dead.

llvm-svn: 41871

Bugs: missing partial uses and redundant partial defs.

llvm-svn: 40688

Don't assume that only Uses can be kills. Defs are marked as kills initially
when there are no uses. This fixes a dangling-pointer bug, where pointers to
deleted instructions were not removed from ki

Don't assume that only Uses can be kills. Defs are marked as kills initially
when there are no uses. This fixes a dangling-pointer bug, where pointers to
deleted instructions were not removed from kills lists. More info here:
http://lists.cs.uiuc.edu/pipermail/llvmdev/2007-July/009749.html

llvm-svn: 40131

show more ...

Dead code.

llvm-svn: 39979

Replace std::set with SmallPtrSet.

llvm-svn: 37746

Properly handle kills of a physical register which has sub-registers that are read by later instructions.

llvm-svn: 37739

When marking a register as being implicitly defined, make sure to clear its partial use info as well.

llvm-svn: 37046

Eliminate MarkVirtRegAliveInBlock recursion.

llvm-svn: 36943

Drop 'const'

llvm-svn: 36662

Use 'static const char' instead of 'static const int'.
Due to darwin gcc bug, one version of darwin linker coalesces
static const int, which defauts PassID based pass identification.

llvm-svn: 36652

Do not use typeinfo to identify pass in pass manager.

llvm-svn: 36632

Rename findRegisterUseOperand to findRegisterUseOperandIdx to avoid confusion.

llvm-svn: 36483

Minor bug.

llvm-svn: 36473