| Message ID | 1349202750-16815-6-git-send-email-rth@twiddle.net |
|---|---|
| State | New |
| Headers | show |
On Tue, Oct 02, 2012 at 11:32:25AM -0700, Richard Henderson wrote: > Signed-off-by: Richard Henderson <rth@twiddle.net> > --- > tcg/optimize.c | 39 +++++++++++++++++++++++++++++++++++++++ > 1 file changed, 39 insertions(+) > > diff --git a/tcg/optimize.c b/tcg/optimize.c > index 592d166..5804b66 100644 > --- a/tcg/optimize.c > +++ b/tcg/optimize.c > @@ -746,6 +746,45 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr, > } > goto do_default; > > + case INDEX_op_brcond2_i32: > + /* Simplify LT/GE comparisons vs zero to a single compare > + vs the high word of the input. */ > + if ((args[4] == TCG_COND_LT || args[4] == TCG_COND_GE) > + && temps[args[2]].state == TCG_TEMP_CONST > + && temps[args[3]].state == TCG_TEMP_CONST > + && temps[args[2]].val == 0 > + && temps[args[3]].val == 0) { > + gen_opc_buf[op_index] = INDEX_op_brcond_i32; > + gen_args[0] = args[1]; > + gen_args[1] = args[3]; > + gen_args[2] = args[4]; > + gen_args[3] = args[5]; > + gen_args += 4; > + args += 6; > + memset(temps, 0, nb_temps * sizeof(struct tcg_temp_info)); > + break; > + } > + goto do_default; > + > + case INDEX_op_setcond2_i32: > + /* Simplify LT/GE comparisons vs zero to a single compare > + vs the high word of the input. */ > + if ((args[5] == TCG_COND_LT || args[5] == TCG_COND_GE) > + && temps[args[3]].state == TCG_TEMP_CONST > + && temps[args[4]].state == TCG_TEMP_CONST > + && temps[args[3]].val == 0 > + && temps[args[4]].val == 0) { > + gen_opc_buf[op_index] = INDEX_op_setcond_i32; > + gen_args[0] = args[0]; > + gen_args[1] = args[2]; > + gen_args[2] = args[4]; > + gen_args[3] = args[5]; > + gen_args += 4; > + args += 6; > + break; > + } > + goto do_default; > + > case INDEX_op_call: > nb_call_args = (args[0] >> 16) + (args[0] & 0xffff); > if (!(args[nb_call_args + 1] & (TCG_CALL_CONST | TCG_CALL_PURE))) { Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
diff --git a/tcg/optimize.c b/tcg/optimize.c index 592d166..5804b66 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -746,6 +746,45 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr, } goto do_default; + case INDEX_op_brcond2_i32: + /* Simplify LT/GE comparisons vs zero to a single compare + vs the high word of the input. */ + if ((args[4] == TCG_COND_LT || args[4] == TCG_COND_GE) + && temps[args[2]].state == TCG_TEMP_CONST + && temps[args[3]].state == TCG_TEMP_CONST + && temps[args[2]].val == 0 + && temps[args[3]].val == 0) { + gen_opc_buf[op_index] = INDEX_op_brcond_i32; + gen_args[0] = args[1]; + gen_args[1] = args[3]; + gen_args[2] = args[4]; + gen_args[3] = args[5]; + gen_args += 4; + args += 6; + memset(temps, 0, nb_temps * sizeof(struct tcg_temp_info)); + break; + } + goto do_default; + + case INDEX_op_setcond2_i32: + /* Simplify LT/GE comparisons vs zero to a single compare + vs the high word of the input. */ + if ((args[5] == TCG_COND_LT || args[5] == TCG_COND_GE) + && temps[args[3]].state == TCG_TEMP_CONST + && temps[args[4]].state == TCG_TEMP_CONST + && temps[args[3]].val == 0 + && temps[args[4]].val == 0) { + gen_opc_buf[op_index] = INDEX_op_setcond_i32; + gen_args[0] = args[0]; + gen_args[1] = args[2]; + gen_args[2] = args[4]; + gen_args[3] = args[5]; + gen_args += 4; + args += 6; + break; + } + goto do_default; + case INDEX_op_call: nb_call_args = (args[0] >> 16) + (args[0] & 0xffff); if (!(args[nb_call_args + 1] & (TCG_CALL_CONST | TCG_CALL_PURE))) {
Signed-off-by: Richard Henderson <rth@twiddle.net> --- tcg/optimize.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+)