I suppose we could add a target macro to let individual ports turn off
REG_NO_CONFLICT generation? Any other ideas?
A pass to reorder insns so that live ranges are shortened and register
pressure is relieved.
Could be something like
for each bb
for each insn
for each active insn
if it has operands that are defined in the current insn
remove it from active insn list
emit it before current insn
if this insn has no operand that dies in this insn
remove it from insn stream
add it to active insn list
for each active insn
if it has operands that are die after the current insn
remove it from active insn list
emit it after current insn
emit all active insns
Paolo
