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shader: support S_ASHR_I64 (#658)

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* shader: implement S_ASHR_I64 with compute coverage

* tests: use existing compute suite for S_ASHR_I64

---------

Co-authored-by: nmzik <Nmzik@mail.ru>
This commit is contained in:
Elija
2026-09-17 08:48:05 +02:00
committed by GitHub
parent 228cf3fbf4
commit f30afc184e
7 changed files with 330 additions and 1 deletions
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src/graphics/shader/recompiler/frontend/decode/ScalarAluOps.cpp
+2 -1
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@@ -24,7 +24,8 @@ constexpr OpcodeMap SOP2_OPCODE_LIST[] = {
{0x1cu, Opcode::S_XNOR_B32}, {0x1du, Opcode::S_XNOR_B64},
{0x1eu, Opcode::S_LSHL_B32}, {0x1fu, Opcode::S_LSHL_B64},
{0x20u, Opcode::S_LSHR_B32}, {0x21u, Opcode::S_LSHR_B64},
{0x22u, Opcode::S_ASHR_I32}, {0x24u, Opcode::S_BFM_B32},
{0x22u, Opcode::S_ASHR_I32}, {0x23u, Opcode::S_ASHR_I64},
{0x24u, Opcode::S_BFM_B32},
{0x25u, Opcode::S_BFM_B64}, {0x26u, Opcode::S_MUL_I32},
{0x27u, Opcode::S_BFE_U32}, {0x28u, Opcode::S_BFE_I32},
{0x29u, Opcode::S_BFE_U64}, {0x2cu, Opcode::S_ABSDIFF_I32},
src/graphics/shader/recompiler/frontend/decode/ShaderDecoder.h
+1
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@@ -106,6 +106,7 @@ enum class Opcode {
S_LSHR_B32,
S_LSHR_B64,
S_ASHR_I32,
S_ASHR_I64,
S_MUL_I32,
S_MUL_HI_U32,
S_MUL_HI_I32,
src/graphics/shader/recompiler/frontend/translate/Integer.cpp
+15
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@@ -168,6 +168,21 @@ bool Translator::SimpleInteger(const Decoder::Instruction& inst, IR::ValueOpcode
return true;
}
bool Translator::S_ASHR_I64(const Decoder::Instruction& inst) {
// Signed 64-bit sources sign-extend literals; generic B64 operands zero-extend them.
const auto source =
inst.src0.kind == Decoder::OperandKind::LiteralConstant
? ir.ConstructU64(
ReadU32(inst.src0),
IR::U32(IR::Value((inst.src0.value & 0x80000000u) ? 0xffffffffu : 0u)))
: ReadU64(inst.src0);
const auto result =
ir.Emit(IR::ValueOpcode::ShiftRightArithmetic64, {source, ReadU32(inst.src1)});
WriteOperand(inst.dst, result);
ir.SetScc(IR::U1(ir.Emit(IR::ValueOpcode::INotEqual64, {result, IR::Value(uint64_t {0})})));
return true;
}
bool Translator::ComposedIntegerBinary(const Decoder::Instruction& inst, IR::ValueOpcode opcode,
bool negate_rhs, bool negate_result, bool update_scc) {
const auto lhs = ReadU32(inst.src0);
src/graphics/shader/recompiler/frontend/translate/Scalar.cpp
+1
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@@ -179,6 +179,7 @@ bool Translator::EmitScalar(const Decoder::Instruction& inst) {
case O::S_LSHR_B64:
return SimpleInteger(inst, IR::ValueOpcode::ShiftRightLogical64, IR::Type::U64, false,
false, true);
case O::S_ASHR_I64: return S_ASHR_I64(inst);
case O::S_ANDN2_B32:
return ComposedIntegerBinary(inst, IR::ValueOpcode::BitwiseAnd32, true, false, true);
src/graphics/shader/recompiler/frontend/translate/Translator.h
+1
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@@ -176,6 +176,7 @@ private:
bool negate_result);
bool SimpleInteger(const Decoder::Instruction& inst, IR::ValueOpcode opcode, IR::Type type,
bool reverse, bool mask_shift_count, bool update_scc);
bool S_ASHR_I64(const Decoder::Instruction& inst);
bool ComposedIntegerBinary(const Decoder::Instruction& inst, IR::ValueOpcode opcode,
bool negate_rhs, bool negate_result, bool update_scc);
bool V_AND_OR_B32(const Decoder::Instruction& inst);