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Merge pull request #3028 from lioncash/constexpr
shader_bytecode: Make Matcher constexpr capable
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commit
5062728669
@ -574,7 +574,7 @@ enum class ShuffleOperation : u64 {
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};
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union Instruction {
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Instruction& operator=(const Instruction& instr) {
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constexpr Instruction& operator=(const Instruction& instr) {
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value = instr.value;
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return *this;
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}
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@ -1760,22 +1760,22 @@ public:
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class Matcher {
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public:
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Matcher(const char* const name, u16 mask, u16 expected, OpCode::Id id, OpCode::Type type)
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constexpr Matcher(const char* const name, u16 mask, u16 expected, Id id, Type type)
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: name{name}, mask{mask}, expected{expected}, id{id}, type{type} {}
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const char* GetName() const {
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constexpr const char* GetName() const {
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return name;
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}
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u16 GetMask() const {
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constexpr u16 GetMask() const {
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return mask;
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}
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Id GetId() const {
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constexpr Id GetId() const {
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return id;
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}
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Type GetType() const {
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constexpr Type GetType() const {
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return type;
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}
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@ -1784,7 +1784,7 @@ public:
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* @param instruction The instruction to test
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* @returns true if the given instruction matches.
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*/
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bool Matches(u16 instruction) const {
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constexpr bool Matches(u16 instruction) const {
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return (instruction & mask) == expected;
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}
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@ -1818,7 +1818,7 @@ private:
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* A '0' in a bitstring indicates that a zero must be present at that bit position.
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* A '1' in a bitstring indicates that a one must be present at that bit position.
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*/
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static auto GetMaskAndExpect(const char* const bitstring) {
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static constexpr auto GetMaskAndExpect(const char* const bitstring) {
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u16 mask = 0, expect = 0;
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for (std::size_t i = 0; i < opcode_bitsize; i++) {
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const std::size_t bit_position = opcode_bitsize - i - 1;
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@ -1835,15 +1835,15 @@ private:
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break;
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}
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}
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return std::make_tuple(mask, expect);
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return std::make_pair(mask, expect);
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}
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public:
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/// Creates a matcher that can match and parse instructions based on bitstring.
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static auto GetMatcher(const char* const bitstring, OpCode::Id op, OpCode::Type type,
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const char* const name) {
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const auto mask_expect = GetMaskAndExpect(bitstring);
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return Matcher(name, std::get<0>(mask_expect), std::get<1>(mask_expect), op, type);
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static constexpr auto GetMatcher(const char* const bitstring, Id op, Type type,
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const char* const name) {
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const auto [mask, expected] = GetMaskAndExpect(bitstring);
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return Matcher(name, mask, expected, op, type);
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}
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};
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