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glasm: Changes to GLASM register allocator and emit context

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This commit is contained in:
ReinUsesLisp
2021-05-07 06:31:30 -03:00
committed by ameerj
parent 36f1586267
commit c1ba685d9c
4 changed files with 64 additions and 26 deletions
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18
src/shader_recompiler/backend/glasm/reg_alloc.h
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@ -15,27 +15,35 @@ class Value;
namespace Shader::Backend::GLASM {
class EmitContext;
struct Id {
u32 base_element : 2;
u32 num_elements_minus_one : 2;
u32 index : 26;
u32 index : 30;
u32 is_spill : 1;
u32 is_condition_code : 1;
};
class RegAlloc {
public:
std::string Define(IR::Inst& inst, u32 num_elements = 1, u32 alignment = 1);
RegAlloc(EmitContext& ctx_) : ctx{ctx_} {}
std::string Define(IR::Inst& inst);
std::string Consume(const IR::Value& value);
[[nodiscard]] size_t NumUsedRegisters() const noexcept {
return num_used_registers;
}
private:
static constexpr size_t NUM_REGS = 4096;
static constexpr size_t NUM_ELEMENTS = 4;
EmitContext& ctx;
std::string Consume(IR::Inst& inst);
Id Alloc(u32 num_elements, u32 alignment);
Id Alloc();
void Free(Id id);