without getting an assertion from ilist that we are dereferencing
ilist<T>::end().

llvm-svn: 11345

ilist of MachineInstr objects. This allows constant time removal and
insertion of MachineInstr instances from anywhere in each
MachineBasicBlock. It also allows for constant time splicing of
MachineInstrs into or out of MachineBasicBlocks.

llvm-svn: 11340

llvm-svn: 11332

llvm-svn: 11285

llvm-svn: 11281

llvm-svn: 11276

llvm-svn: 11274

llvm-svn: 11228

llvm-svn: 11218

operand of the instruction and thus simplify the register allocation.

llvm-svn: 11124

at Chris's request.

llvm-svn: 11120

to be the same (IOW they are not two address instructions).

llvm-svn: 11117

llvm-svn: 11098

llvm-svn: 11095

llvm-svn: 11094

llvm-svn: 11081

llvm-svn: 11078

llvm-svn: 11077

llvm-svn: 11070

llvm-svn: 11055

llvm-svn: 11026

llvm-svn: 11025

FP_REG_KILL instructions at the end of blocks involved with critical edges.

Fix a bug where FP_REG_KILL instructions weren't inserted in fall through
unconditional branches.  Perhaps this will fix some linscan problems?

llvm-svn: 11019

It's not clear why the code was looking for signed chars < 0, but it can't
matter to the assembler anyway, so the check goes away.

llvm-svn: 10853

register so that LiveVariable analysis is not confused.

llvm-svn: 10773

implementation from the TargetMachine directly.

llvm-svn: 10636

allocation.

llvm-svn: 10633

llvm-svn: 10632

llvm-svn: 10629

llvm-svn: 10567

llvm-svn: 10563

instruction selector by adding a new pseudo-instruction
FP_REG_KILL. This instruction implicitly defines all x86 fp registers
and is a terminator so that passes which add machine code at the end
of basic blocks (like phi elimination) do not add instructions between
it and the branch or return instruction.

llvm-svn: 10562

been emitted.  Also, since the FPK pass is causing memory access violations,
disable it.

llvm-svn: 10559

instructions on an ilist

llvm-svn: 10556

Minor cleanups to killer pass

llvm-svn: 10555

llvm-svn: 10545

llvm-svn: 10542

    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.

llvm-svn: 10461

llvm-svn: 10460

allocaton on the X86 to add information to the machine code denoting
that our floating point stackifier cannot handle virtual point
register that are alive across basic blocks. This pass adds an
implicit def of all virtual floating point register at the end of each
basic block.

llvm-svn: 10446