On 2015-05-19 07:46, Richard Henderson wrote:
> On 05/19/2015 03:26 AM, Aurelien Jarno wrote:
> > @@ -1522,6 +1522,9 @@ static void tcg_liveness_analysis(TCGContext *s)
> > if (dead_temps[arg]) {
> > dead_args |= (1 << i);
> > }
> >
On 05/19/2015 03:26 AM, Aurelien Jarno wrote:
> @@ -1522,6 +1522,9 @@ static void tcg_liveness_analysis(TCGContext *s)
> if (dead_temps[arg]) {
> dead_args |= (1 << i);
> }
> +}
> +for (i = nb_oargs;
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
