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emit_x64_vector: -0x80000000 isn't -0x80000000

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This commit is contained in:
MerryMage 2018-07-24 18:45:45 +01:00
parent b455b566e7
commit 8f4c1a8558
3 changed files with 15 additions and 3 deletions
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12
src/frontend/A64/translate/impl/simd_shift_by_immediate.cpp
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@ -27,6 +27,7 @@ enum class Signedness {
enum class Narrowing {
Truncation,
SaturateToUnsigned,
SaturateToSigned,
};
IR::U128 PerformRoundingCorrection(TranslatorVisitor& v, size_t esize, u64 round_value, IR::U128 original, IR::U128 shifted) {
@ -110,6 +111,9 @@ bool ShiftRightNarrowing(TranslatorVisitor& v, bool Q, Imm<4> immh, Imm<3> immb,
case Narrowing::SaturateToUnsigned:
ASSERT(signedness == Signedness::Signed);
return v.ir.VectorSignedSaturatedNarrowToUnsigned(source_esize, wide_result);
case Narrowing::SaturateToSigned:
ASSERT(signedness == Signedness::Signed);
return v.ir.VectorSignedSaturatedNarrowToSigned(source_esize, wide_result);
}
UNREACHABLE();
return IR::U128{};
@ -192,6 +196,14 @@ bool TranslatorVisitor::RSHRN(bool Q, Imm<4> immh, Imm<3> immb, Vec Vn, Vec Vd)
return ShiftRightNarrowing(*this, Q, immh, immb, Vn, Vd, Rounding::Round, Narrowing::Truncation, Signedness::Unsigned);
}
bool TranslatorVisitor::SQSHRN_2(bool Q, Imm<4> immh, Imm<3> immb, Vec Vn, Vec Vd) {
return ShiftRightNarrowing(*this, Q, immh, immb, Vn, Vd, Rounding::None, Narrowing::SaturateToSigned, Signedness::Signed);
}
bool TranslatorVisitor::SQRSHRN_2(bool Q, Imm<4> immh, Imm<3> immb, Vec Vn, Vec Vd) {
return ShiftRightNarrowing(*this, Q, immh, immb, Vn, Vd, Rounding::Round, Narrowing::SaturateToSigned, Signedness::Signed);
}
bool TranslatorVisitor::SQSHRUN_2(bool Q, Imm<4> immh, Imm<3> immb, Vec Vn, Vec Vd) {
return ShiftRightNarrowing(*this, Q, immh, immb, Vn, Vd, Rounding::None, Narrowing::SaturateToUnsigned, Signedness::Signed);
}