Remove attribution from file headers, per discussion on llvmdev.

llvm-svn: 45418

Clean up sub-register implementation by moving subReg information back to
MachineOperand auxInfo. Previous clunky implementation uses an external map
to track sub-register uses. That works because re

Clean up sub-register implementation by moving subReg information back to
MachineOperand auxInfo. Previous clunky implementation uses an external map
to track sub-register uses. That works because register allocator uses
a new virtual register for each spilled use. With interval splitting (coming
soon), we may have multiple uses of the same register some of which are
of using different sub-registers from others. It's too fragile to constantly
update the information.

llvm-svn: 44104

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Optionally create a MachineInstr without default implicit operands.

llvm-svn: 42945

EXTRACT_SUBREG coalescing support. The coalescer now treats EXTRACT_SUBREG like
(almost) a register copy. However, it always coalesced to the register of the
RHS (the super-register). All uses of the

EXTRACT_SUBREG coalescing support. The coalescer now treats EXTRACT_SUBREG like
(almost) a register copy. However, it always coalesced to the register of the
RHS (the super-register). All uses of the result of a EXTRACT_SUBREG are sub-
register uses which adds subtle complications to load folding, spiller rewrite,
etc.

llvm-svn: 42899

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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

Remove spurious consts. This fixes warnings with compilers that
are strict about such things.

llvm-svn: 41956

Remove subreg index from MachineInstr's and also keep vregs as unsigned when adding operands.

llvm-svn: 40514

MachineInstr::isPredicable() is no longer needed.

llvm-svn: 37599

Add missing const qualifiers.

llvm-svn: 37341

Rename M_PREDICATED to M_PREDICABLE; Moved isPredicable() to MachineInstr.

llvm-svn: 37121

Added getNumExplicitOperands and findFirstPredOperand.

llvm-svn: 37064

llvm bug #1350, parts 1, 2, and 3.

llvm-svn: 36618

Rename findRegisterUseOperand to findRegisterUseOperandIdx to avoid confusion.

llvm-svn: 36483

Change findRegisterUseOperand() to return operand index instead.

llvm-svn: 35363

Use findRegisterUseOperand to find a kill of particular register.

llvm-svn: 34512

Re-apply my liveintervalanalysis changes. Now with PR1207 fixes.

llvm-svn: 34428

For PR1207:
Revert patches that caused the problem. Evan, please investigate and reapply
when you've discovered the problem.

llvm-svn: 34399

Added findRegisterDefOperand().

llvm-svn: 34380

Print <dead> def operands.

llvm-svn: 34343

The best unbreakage yet, addressing Bill's concerns.

llvm-svn: 32622

An even better unbreakage...

llvm-svn: 32617

Changed llvm_ostream et all to OStream. llvm_cerr, llvm_cout, llvm_null, are
now cerr, cout, and NullStream resp.

llvm-svn: 32298

Move copyKillDeadInfo out-of-line. Add findRegisterUseOperand().

llvm-svn: 32273

- MachineInstr now keeps a ptr to TargetInstrDescriptor instead of Opcode.
- Remove the ugly TargetInstrDescriptors hack.

llvm-svn: 32032

Use llvm streams instead of <iostream>

llvm-svn: 31985