glsl: Rework variable allocator to allow for variable reuse

This commit is contained in:
ameerj 2021-05-30 17:27:00 -04:00
parent 748e56e8a2
commit 8185a5ab34
14 changed files with 482 additions and 353 deletions

View file

@ -29,7 +29,7 @@ void SetSignFlag(EmitContext& ctx, IR::Inst& inst, std::string_view result) {
}
} // Anonymous namespace
void EmitIAdd32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
const auto result{ctx.reg_alloc.Define(inst, Type::U32)};
const auto result{ctx.var_alloc.Define(inst, GlslVarType::U32)};
if (IR::Inst* const carry{inst.GetAssociatedPseudoOperation(IR::Opcode::GetCarryFromOp)}) {
ctx.uses_cc_carry = true;
ctx.Add("{}=uaddCarry({},{},carry);", result, a, b);
@ -130,7 +130,7 @@ void EmitBitFieldInsert(EmitContext& ctx, IR::Inst& inst, std::string_view base,
void EmitBitFieldSExtract(EmitContext& ctx, IR::Inst& inst, std::string_view base,
std::string_view offset, std::string_view count) {
const auto result{ctx.reg_alloc.Define(inst, Type::U32)};
const auto result{ctx.var_alloc.Define(inst, GlslVarType::U32)};
ctx.Add("{}=uint(bitfieldExtract(int({}),int({}),int({})));", result, base, offset, count);
SetZeroFlag(ctx, inst, result);
SetSignFlag(ctx, inst, result);
@ -138,7 +138,7 @@ void EmitBitFieldSExtract(EmitContext& ctx, IR::Inst& inst, std::string_view bas
void EmitBitFieldUExtract(EmitContext& ctx, IR::Inst& inst, std::string_view base,
std::string_view offset, std::string_view count) {
const auto result{ctx.reg_alloc.Define(inst, Type::U32)};
const auto result{ctx.var_alloc.Define(inst, GlslVarType::U32)};
ctx.Add("{}=uint(bitfieldExtract(uint({}),int({}),int({})));", result, base, offset, count);
SetZeroFlag(ctx, inst, result);
SetSignFlag(ctx, inst, result);
@ -184,7 +184,7 @@ void EmitUMax32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::strin
void EmitSClamp32(EmitContext& ctx, IR::Inst& inst, std::string_view value, std::string_view min,
std::string_view max) {
const auto result{ctx.reg_alloc.Define(inst, Type::U32)};
const auto result{ctx.var_alloc.Define(inst, GlslVarType::U32)};
ctx.Add("{}=clamp(int({}),int({}),int({}));", result, value, min, max);
SetZeroFlag(ctx, inst, result);
SetSignFlag(ctx, inst, result);
@ -192,7 +192,7 @@ void EmitSClamp32(EmitContext& ctx, IR::Inst& inst, std::string_view value, std:
void EmitUClamp32(EmitContext& ctx, IR::Inst& inst, std::string_view value, std::string_view min,
std::string_view max) {
const auto result{ctx.reg_alloc.Define(inst, Type::U32)};
const auto result{ctx.var_alloc.Define(inst, GlslVarType::U32)};
ctx.Add("{}=clamp(uint({}),uint({}),uint({}));", result, value, min, max);
SetZeroFlag(ctx, inst, result);
SetSignFlag(ctx, inst, result);