On 05/21/2015 12:35 PM, Aurelien Jarno wrote: > When the same temp is used twice or more as an input argument to a TCG > instruction, the dead computation code doesn't recognize the second use > as a dead temp. This is because the temp is marked as live in the same > loop where dead inputs are checked. > > The fix is to split the loop in two parts. This avoid emitting a move > and using a register for the movcond instruction when used as "move if > true" on x86-64. This might bring more improvements on RISC TCG targets > which don't have outputs aliased to inputs. > > Cc: Richard Henderson <r...@twiddle.net> > Signed-off-by: Aurelien Jarno <aurel...@aurel32.net> > --- > tcg/tcg.c | 14 +++++++++++--- > 1 file changed, 11 insertions(+), 3 deletions(-)
Reviewed-by: Richard Henderson <r...@twiddle.net> r~
