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Clamp spu_fi results

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RipleyTom 2024-04-28 21:55:52 +02:00 • committed by Elad Ashkenazi
parent 430b57833d
commit 8d815e8ee0
1 changed files with 9 additions and 25 deletions
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34
rpcs3/Emu/Cell/SPULLVMRecompiler.cpp
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@ -5997,40 +5997,24 @@ public:
{ {
if (auto [ok, data] = get_const_vector(a.value, m_pos); ok) if (auto [ok, data] = get_const_vector(a.value, m_pos); ok)
{ {
if (!is_spu_float_zero(data, 0)) if (is_spu_float_zero(data, 0))
{ {
return false; return true;
}
if (auto [ok0, data0] = get_const_vector(b.value, m_pos); ok0)
{
if (is_spu_float_zero(data0, 0))
{
return true;
}
} }
} }
if (auto [ok, data] = get_const_vector(a.value, m_pos); ok) if (auto [ok, data] = get_const_vector(b.value, m_pos); ok)
{ {
if (!is_spu_float_zero(data, 0)) if (is_spu_float_zero(data, 0))
{ {
return false; return true;
}
if (auto [ok0, data0] = get_const_vector(b.value, m_pos); ok0)
{
if (is_spu_float_zero(data0, 0))
{
return true;
}
} }
} }
return false; return false;
}()) }())
{ {
// Just return the added value if both a and b is +0 or -0 (+0 and -0 arent't allowed alone) // Just return the added value if either a or b are +-0
return c; return c;
} }
@ -6403,7 +6387,7 @@ public:
const auto bnew = (base - ymul) >> (zext<u32[4]>(comparison) ^ 9); // Shift one less bit if exponent is adjusted const auto bnew = (base - ymul) >> (zext<u32[4]>(comparison) ^ 9); // Shift one less bit if exponent is adjusted
const auto base_result = (b & 0xff800000u) | (bnew & ~0xff800000u); // Inject old sign and exponent const auto base_result = (b & 0xff800000u) | (bnew & ~0xff800000u); // Inject old sign and exponent
const auto adjustment = bitcast<u32[4]>(sext<s32[4]>(comparison)) & (1 << 23); // exponent adjustement for negative bnew const auto adjustment = bitcast<u32[4]>(sext<s32[4]>(comparison)) & (1 << 23); // exponent adjustement for negative bnew
return bitcast<f32[4]>(base_result - adjustment); return clamp_smax(eval(bitcast<f32[4]>(base_result - adjustment)));
}); });
const auto [a, b] = get_vrs<f32[4]>(op.ra, op.rb); const auto [a, b] = get_vrs<f32[4]>(op.ra, op.rb);
@ -6437,7 +6421,7 @@ public:
const auto bnew = (base - ymul) >> (zext<u32[4]>(comparison) ^ 9); // Shift one less bit if exponent is adjusted const auto bnew = (base - ymul) >> (zext<u32[4]>(comparison) ^ 9); // Shift one less bit if exponent is adjusted
const auto base_result = (b & 0xff800000u) | (bnew & ~0xff800000u); // Inject old sign and exponent const auto base_result = (b & 0xff800000u) | (bnew & ~0xff800000u); // Inject old sign and exponent
const auto adjustment = bitcast<u32[4]>(sext<s32[4]>(comparison)) & (1 << 23); // exponent adjustement for negative bnew const auto adjustment = bitcast<u32[4]>(sext<s32[4]>(comparison)) & (1 << 23); // exponent adjustement for negative bnew
return bitcast<f32[4]>(base_result - adjustment); return clamp_smax(eval(bitcast<f32[4]>(base_result - adjustment)));
}); });
register_intrinsic("spu_rsqrte", [&](llvm::CallInst* ci) register_intrinsic("spu_rsqrte", [&](llvm::CallInst* ci)
@ -6464,7 +6448,7 @@ public:
const auto bnew = (base - ymul) >> (zext<u32[4]>(comparison) ^ 9); // Shift one less bit if exponent is adjusted const auto bnew = (base - ymul) >> (zext<u32[4]>(comparison) ^ 9); // Shift one less bit if exponent is adjusted
const auto base_result = (b & 0xff800000u) | (bnew & ~0xff800000u); // Inject old sign and exponent const auto base_result = (b & 0xff800000u) | (bnew & ~0xff800000u); // Inject old sign and exponent
const auto adjustment = bitcast<u32[4]>(sext<s32[4]>(comparison)) & (1 << 23); // exponent adjustement for negative bnew const auto adjustment = bitcast<u32[4]>(sext<s32[4]>(comparison)) & (1 << 23); // exponent adjustement for negative bnew
return bitcast<f32[4]>(base_result - adjustment); return clamp_smax(eval(bitcast<f32[4]>(base_result - adjustment)));
}); });
break; break;
} }