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ir: Add opcodes for scalar signed saturated doubling multiplies

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This commit is contained in:
Lioncash
2018-09-05 19:16:41 -04:00
committed by MerryMage
parent 9c03311fed
commit 7ebfd0f31c
4 changed files with 81 additions and 0 deletions
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18
src/frontend/ir/ir_emitter.cpp
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@@ -501,6 +501,24 @@ ResultAndOverflow<UAny> IREmitter::SignedSaturatedAdd(const UAny& a, const UAny&
return {result, overflow};
}
ResultAndOverflow<UAny> IREmitter::SignedSaturatedDoublingMultiplyReturnHigh(const UAny& a, const UAny& b) {
ASSERT(a.GetType() == b.GetType());
const auto result = [&]() -> IR::UAny {
switch (a.GetType()) {
case IR::Type::U16:
return Inst<U16>(Opcode::SignedSaturatedDoublingMultiplyReturnHigh16, a, b);
case IR::Type::U32:
return Inst<U32>(Opcode::SignedSaturatedDoublingMultiplyReturnHigh32, a, b);
default:
UNREACHABLE();
return IR::UAny{};
}
}();
const auto overflow = Inst<U1>(Opcode::GetOverflowFromOp, result);
return {result, overflow};
}
ResultAndOverflow<UAny> IREmitter::SignedSaturatedSub(const UAny& a, const UAny& b) {
ASSERT(a.GetType() == b.GetType());
const auto result = [&]() -> IR::UAny {

1
src/frontend/ir/ir_emitter.h
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@@ -143,6 +143,7 @@ public:
U32U64 MinUnsigned(const U32U64& a, const U32U64& b);
ResultAndOverflow<UAny> SignedSaturatedAdd(const UAny& a, const UAny& b);
ResultAndOverflow<UAny> SignedSaturatedDoublingMultiplyReturnHigh(const UAny& a, const UAny& b);
ResultAndOverflow<UAny> SignedSaturatedSub(const UAny& a, const UAny& b);
ResultAndOverflow<U32> SignedSaturation(const U32& a, size_t bit_size_to_saturate_to);
ResultAndOverflow<UAny> UnsignedSaturatedAdd(const UAny& a, const UAny& b);

2
src/frontend/ir/opcodes.inc
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@@ -157,6 +157,8 @@ OPCODE(SignedSaturatedAdd8, U8, U8,
OPCODE(SignedSaturatedAdd16, U16, U16, U16 )
OPCODE(SignedSaturatedAdd32, U32, U32, U32 )
OPCODE(SignedSaturatedAdd64, U64, U64, U64 )
OPCODE(SignedSaturatedDoublingMultiplyReturnHigh16, U16, U16, U16 )
OPCODE(SignedSaturatedDoublingMultiplyReturnHigh32, U32, U32, U32 )
OPCODE(SignedSaturatedSub8, U8, U8, U8 )
OPCODE(SignedSaturatedSub16, U16, U16, U16 )
OPCODE(SignedSaturatedSub32, U32, U32, U32 )