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This commit is contained in:
RipleyTom
2026-07-21 21:49:00 +03:00
committed by Elad
parent d75543a5b1
commit 8b05c8cc1f
1 changed files with 20 additions and 24 deletions
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rpcs3/Emu/CPU/CPUTranslator.cpp
+20 -24
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@@ -621,7 +621,7 @@ llvm::KnownBits cpu_translator::get_known_bits_fallback(llvm::Value* value)
if (!type->isVectorTy())
{
if (const auto it = llvm::dyn_cast<llvm::IntegerType>(type))
if (llvm::isa<llvm::IntegerType>(type))
{
if (auto bin_inst = llvm::dyn_cast<llvm::BinaryOperator>(value))
{
@@ -663,20 +663,7 @@ llvm::KnownBits cpu_translator::get_known_bits_fallback(llvm::Value* value)
return llvm::KnownBits(type->getScalarSizeInBits());
}
const auto cv = llvm::dyn_cast<llvm::ConstantDataVector>(value);
if (!cv)
{
if (llvm::isa<llvm::ConstantAggregateZero>(value))
{
llvm::KnownBits ret(type->getScalarSizeInBits());
ret.Zero.setAllBits();
return ret;
}
}
const auto original_value = peek_through_bitcasts(value);
const auto original_type = original_value->getType();
auto bin_inst = llvm::dyn_cast<llvm::BinaryOperator>(original_value);
@@ -699,31 +686,40 @@ llvm::KnownBits cpu_translator::get_known_bits_fallback(llvm::Value* value)
ensure(ok);
llvm::APInt dest{};
llvm::APInt all_lanes{};
llvm::APInt any_lanes{};
auto combine_bits = [&](const auto& array, u32 size)
{
auto first = +array[0];
auto all = +array[0];
auto any = +array[0];
for (u32 i = 0; i < size; i++)
for (u32 i = 1; i < size; i++)
{
first &= +array[i];
all &= +array[i];
any |= +array[i];
}
return first;
return std::make_pair(all, any);
};
if (type->getScalarType()->isIntegerTy(8))
{
dest = llvm::APInt(8, combine_bits(v128_const._u8, 16));
const auto [all, any] = combine_bits(v128_const._u8, 16);
all_lanes = llvm::APInt(8, all);
any_lanes = llvm::APInt(8, any);
}
else if (type->getScalarType()->isIntegerTy(16))
{
dest = llvm::APInt(16, combine_bits(v128_const._u16, 8));
const auto [all, any] = combine_bits(v128_const._u16, 8);
all_lanes = llvm::APInt(16, all);
any_lanes = llvm::APInt(16, any);
}
else if (type->getScalarType()->isIntegerTy(32))
{
dest = llvm::APInt(32, combine_bits(v128_const._u32, 4));
const auto [all, any] = combine_bits(v128_const._u32, 4);
all_lanes = llvm::APInt(32, all);
any_lanes = llvm::APInt(32, any);
}
else // if (type->getScalarType()->isIntegerTy(64))
{
@@ -733,14 +729,14 @@ llvm::KnownBits cpu_translator::get_known_bits_fallback(llvm::Value* value)
if (bin_inst->getOpcode() == llvm::Instruction::Or)
{
llvm::KnownBits ret(type->getScalarSizeInBits());
ret.One = dest;
ret.One = all_lanes;
return ret;
}
if (bin_inst->getOpcode() == llvm::Instruction::And)
{
llvm::KnownBits ret(type->getScalarSizeInBits());
ret.Zero = dest;
ret.Zero = any_lanes;
ret.Zero.flipAllBits();
return ret;
}