mirror of https://github.com/RPCS3/rpcs3.git
Dynamic sqrt pattern
This commit is contained in:
parent
ef5cffdead
commit
54ce1343cf
|
@ -6027,12 +6027,12 @@ public:
|
|||
static const auto MT = match<f32[4]>();
|
||||
const auto full_expr = fma(a, b, c);
|
||||
|
||||
auto check_sqrt_pattern_for_float = [&](f32 float_value) -> bool
|
||||
{
|
||||
// eval_sqrt = x * spu_resqrt(x)
|
||||
// eval_sqrt + (1 - (spu_resqrt(x) * eval_sqrt)) * (0.5 * eval_sqrt)
|
||||
// FMA(FNMS(spu_resqrt(x) <*> eval_sqrt, float_value) <*> FM(0.5f, eval_sqrt), eval_sqrt)
|
||||
if (auto [ok_fm_c, x, maybe_x] = match_expr(c, fm(MT, spu_rsqrte(MT))); ok_fm_c && x.eq(maybe_x))
|
||||
{
|
||||
auto check_sqrt_pattern_for_float = [&](f32 float_value) -> bool
|
||||
{
|
||||
if (auto [ok_fma] = match_expr(full_expr, fma(fnms(spu_rsqrte(x), c, fsplat<f32[4]>(float_value)), fm(fsplat<f32[4]>(0.5f), c), c)); ok_fma)
|
||||
{
|
||||
|
@ -6042,8 +6042,6 @@ public:
|
|||
set_vr(op.rt4, fsqrt(fabs(x)));
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
};
|
||||
|
||||
|
@ -6053,6 +6051,16 @@ public:
|
|||
if (check_sqrt_pattern_for_float(ONEISH))
|
||||
return;
|
||||
|
||||
// Generate dynamic pattern for when float is unknown because of scope
|
||||
if (auto [ok_fma, cursed_float] = match_expr(full_expr, fma(fnms(spu_rsqrte(x), c, MT), fm(fsplat<f32[4]>(0.5f), c), c)); ok_fma)
|
||||
{
|
||||
erase_stores(a, b, c);
|
||||
const auto bitcast_float = bitcast<u32[4]>(cursed_float);
|
||||
set_vr(op.rt4, select(bitcast_float == splat<u32[4]>(0x3F800000) | bitcast_float == splat<u32[4]>(0x3F800001), fsqrt(fabs(x)), fma(fnms(spu_rsqrte(x), c, cursed_float), fm(fsplat<f32[4]>(0.5f), fm(x, spu_rsqrte(x))), fm(x, spu_rsqrte(x)))));
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
// Full reciprocal patterns
|
||||
// FMA(FNMS(div <*> spu_re(div), float_value) <*> spu_re(div), spu_re(div))
|
||||
if (auto [ok_c, div] = match_expr(c, spu_re(MT)); ok_c)
|
||||
|
|
Loading…
Reference in New Issue