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Optimize decoder

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This commit is contained in:
nmzik
2026-08-15 21:38:44 +02:00
parent f3cdf217ea
commit 5bfdf4267e
15 changed files with 471 additions and 485 deletions
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src/graphics/shader/recompiler/frontend/decode/ScalarAluOps.cpp
+19 -20
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@@ -7,7 +7,7 @@ namespace {
using Detail::OpcodeMap;
constexpr OpcodeMap SOP2_OPS[] = {
constexpr OpcodeMap SOP2_OPCODE_LIST[] = {
{0x00u, Opcode::SAddU32}, {0x01u, Opcode::SSubU32}, {0x02u, Opcode::SAddI32},
{0x03u, Opcode::SSubI32}, {0x04u, Opcode::SAddcU32}, {0x05u, Opcode::SSubbU32},
{0x06u, Opcode::SMinI32}, {0x07u, Opcode::SMinU32}, {0x08u, Opcode::SMaxI32},
@@ -26,7 +26,7 @@ constexpr OpcodeMap SOP2_OPS[] = {
{0x35u, Opcode::SMulHiU32},
};
constexpr OpcodeMap SOP1_OPS[] = {
constexpr OpcodeMap SOP1_OPCODE_LIST[] = {
{0x03u, Opcode::SMovB32}, {0x04u, Opcode::SMovB64},
{0x07u, Opcode::SNotB32}, {0x08u, Opcode::SNotB64},
{0x0au, Opcode::SWqmB64}, {0x0bu, Opcode::SBrevB32},
@@ -40,7 +40,7 @@ constexpr OpcodeMap SOP1_OPS[] = {
{0x3cu, Opcode::SAndSaveexecB32}, {0x44u, Opcode::SAndn1SaveexecB32},
};
constexpr OpcodeMap SOPC_OPS[] = {
constexpr OpcodeMap SOPC_OPCODE_LIST[] = {
{0x00u, Opcode::SCmpEqI32}, {0x01u, Opcode::SCmpLgI32}, {0x02u, Opcode::SCmpGtI32},
{0x03u, Opcode::SCmpGeI32}, {0x04u, Opcode::SCmpLtI32}, {0x05u, Opcode::SCmpLeI32},
{0x06u, Opcode::SCmpEqU32}, {0x07u, Opcode::SCmpLgU32}, {0x08u, Opcode::SCmpGtU32},
@@ -49,7 +49,7 @@ constexpr OpcodeMap SOPC_OPS[] = {
{0x13u, Opcode::SCmpLgU64},
};
constexpr OpcodeMap SOPK_OPS[] = {
constexpr OpcodeMap SOPK_OPCODE_LIST[] = {
{0x00u, Opcode::SMovkI32}, {0x03u, Opcode::SCmpEqI32}, {0x04u, Opcode::SCmpLgI32},
{0x05u, Opcode::SCmpGtI32}, {0x06u, Opcode::SCmpGeI32}, {0x07u, Opcode::SCmpLtI32},
{0x08u, Opcode::SCmpLeI32}, {0x09u, Opcode::SCmpEqU32}, {0x0au, Opcode::SCmpLgU32},
@@ -59,7 +59,7 @@ constexpr OpcodeMap SOPK_OPS[] = {
{0x19u, Opcode::SWaitcnt}, {0x1au, Opcode::SWaitcnt},
};
constexpr OpcodeMap SOPP_OPS[] = {
constexpr OpcodeMap SOPP_OPCODE_LIST[] = {
{0x00u, Opcode::SNop}, {0x01u, Opcode::SEndpgm}, {0x02u, Opcode::SBranch},
{0x04u, Opcode::SCbranchScc0}, {0x05u, Opcode::SCbranchScc1}, {0x06u, Opcode::SCbranchVccz},
{0x07u, Opcode::SCbranchVccnz}, {0x08u, Opcode::SCbranchExecz}, {0x09u, Opcode::SCbranchExecnz},
@@ -67,11 +67,12 @@ constexpr OpcodeMap SOPP_OPS[] = {
{0x10u, Opcode::SSendmsg}, {0x12u, Opcode::STrap}, {0x16u, Opcode::STtraceData},
{0x20u, Opcode::SInstPrefetch},
};
static_assert(Detail::HasUniqueEncodings(SOP1_OPS));
static_assert(Detail::HasUniqueEncodings(SOP2_OPS));
static_assert(Detail::HasUniqueEncodings(SOPK_OPS));
static_assert(Detail::HasUniqueEncodings(SOPC_OPS));
static_assert(Detail::HasUniqueEncodings(SOPP_OPS));
constexpr auto SOP1_OPS = Detail::MakeOpcodeTable<0x100>(SOP1_OPCODE_LIST);
constexpr auto SOP2_OPS = Detail::MakeOpcodeTable<0x80>(SOP2_OPCODE_LIST);
constexpr auto SOPK_OPS = Detail::MakeOpcodeTable<0x20>(SOPK_OPCODE_LIST);
constexpr auto SOPC_OPS = Detail::MakeOpcodeTable<0x80>(SOPC_OPCODE_LIST);
constexpr auto SOPP_OPS = Detail::MakeOpcodeTable<0x80>(SOPP_OPCODE_LIST);
bool DecodeBinarySources(uint32_t pc, std::span<const uint32_t> code, uint32_t word_index,
Instruction& inst, uint32_t ssrc0, uint32_t ssrc1, std::string* error) {
@@ -80,7 +81,8 @@ bool DecodeBinarySources(uint32_t pc, std::span<const uint32_t> code, uint32_t w
return false;
}
inst.src_count = 2;
return ReadLiteralOperands(code, word_index, inst, error);
ReadLiteralOperands(code, word_index, inst);
return true;
}
} // namespace
@@ -114,7 +116,8 @@ bool DecodeSop1(uint32_t pc, std::span<const uint32_t> code, uint32_t word_index
if (!DecodeScalarSource(ssrc0, pc, inst.src0, error)) {
return false;
}
return ReadLiteralOperands(code, word_index, inst, error);
ReadLiteralOperands(code, word_index, inst);
return true;
default: break;
}
@@ -123,7 +126,8 @@ bool DecodeSop1(uint32_t pc, std::span<const uint32_t> code, uint32_t word_index
return false;
}
inst.src_count = 1;
return ReadLiteralOperands(code, word_index, inst, error);
ReadLiteralOperands(code, word_index, inst);
return true;
}
bool DecodeSop2(uint32_t pc, std::span<const uint32_t> code, uint32_t word_index, Instruction& inst,
@@ -159,8 +163,6 @@ bool DecodeSopk(uint32_t pc, std::span<const uint32_t> code, uint32_t word_index
const uint32_t sdst = (word >> 16u) & 0x7fu;
const auto imm = static_cast<int16_t>(word & 0xffffu);
(void)error;
inst.pc = pc;
inst.word = word;
inst.family = Family::SOPK;
@@ -234,14 +236,12 @@ bool DecodeSopc(uint32_t pc, std::span<const uint32_t> code, uint32_t word_index
return DecodeBinarySources(pc, code, word_index, inst, ssrc0, ssrc1, error);
}
bool DecodeSopp(uint32_t pc, std::span<const uint32_t> code, uint32_t word_index, Instruction& inst,
std::string* error) {
void DecodeSopp(uint32_t pc, std::span<const uint32_t> code, uint32_t word_index,
Instruction& inst) {
const uint32_t word = code[word_index];
const uint32_t opcode = (word >> 16u) & 0x7fu;
const uint32_t simm = word & 0xffffu;
(void)error;
inst.pc = pc;
inst.word = word;
inst.family = Family::SOPP;
@@ -265,7 +265,6 @@ bool DecodeSopp(uint32_t pc, std::span<const uint32_t> code, uint32_t word_index
if (inst.opcode == Opcode::Unsupported) {
SetUnsupported(inst, Family::SOPP, opcode, "SOPP control-flow opcode is not implemented");
}
return true;
}
} // namespace Libs::Graphics::ShaderRecompiler::Decoder