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shader: Implement ISETP.X

master
ameerj 2021-07-12 19:56:14 +07:00
parent bf2956d77a
commit fc7bed21b5
4 changed files with 57 additions and 44 deletions
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43
src/shader_recompiler/frontend/maxwell/translate/impl/common_funcs.cpp
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@ -29,6 +29,49 @@ IR::U1 IntegerCompare(IR::IREmitter& ir, const IR::U32& operand_1, const IR::U32
}
}
IR::U1 ExtendedIntegerCompare(IR::IREmitter& ir, const IR::U32& operand_1, const IR::U32& operand_2,
CompareOp compare_op, bool is_signed) {
const IR::U32 zero{ir.Imm32(0)};
const IR::U32 carry{ir.Select(ir.GetCFlag(), ir.Imm32(1), zero)};
const IR::U1 z_flag{ir.GetZFlag()};
const IR::U32 intermediate{ir.IAdd(ir.IAdd(operand_1, ir.BitwiseNot(operand_2)), carry)};
const IR::U1 flip_logic{is_signed ? ir.Imm1(false)
: ir.LogicalXor(ir.ILessThan(operand_1, zero, true),
ir.ILessThan(operand_2, zero, true))};
switch (compare_op) {
case CompareOp::False:
return ir.Imm1(false);
case CompareOp::LessThan:
return IR::U1{ir.Select(flip_logic, ir.IGreaterThanEqual(intermediate, zero, true),
ir.ILessThan(intermediate, zero, true))};
case CompareOp::Equal:
return ir.LogicalAnd(ir.IEqual(intermediate, zero), z_flag);
case CompareOp::LessThanEqual: {
const IR::U1 base_cmp{ir.Select(flip_logic, ir.IGreaterThanEqual(intermediate, zero, true),
ir.ILessThan(intermediate, zero, true))};
return ir.LogicalOr(base_cmp, ir.LogicalAnd(ir.IEqual(intermediate, zero), z_flag));
}
case CompareOp::GreaterThan: {
const IR::U1 base_cmp{ir.Select(flip_logic, ir.ILessThanEqual(intermediate, zero, true),
ir.IGreaterThan(intermediate, zero, true))};
const IR::U1 not_z{ir.LogicalNot(z_flag)};
return ir.LogicalOr(base_cmp, ir.LogicalAnd(ir.IEqual(intermediate, zero), not_z));
}
case CompareOp::NotEqual:
return ir.LogicalOr(ir.INotEqual(intermediate, zero),
ir.LogicalAnd(ir.IEqual(intermediate, zero), ir.LogicalNot(z_flag)));
case CompareOp::GreaterThanEqual: {
const IR::U1 base_cmp{ir.Select(flip_logic, ir.ILessThan(intermediate, zero, true),
ir.IGreaterThanEqual(intermediate, zero, true))};
return ir.LogicalOr(base_cmp, ir.LogicalAnd(ir.IEqual(intermediate, zero), z_flag));
}
case CompareOp::True:
return ir.Imm1(true);
default:
throw NotImplementedException("Invalid compare op {}", compare_op);
}
}
IR::U1 PredicateCombine(IR::IREmitter& ir, const IR::U1& predicate_1, const IR::U1& predicate_2,
BooleanOp bop) {
switch (bop) {

4
src/shader_recompiler/frontend/maxwell/translate/impl/common_funcs.h
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@ -11,6 +11,10 @@ namespace Shader::Maxwell {
[[nodiscard]] IR::U1 IntegerCompare(IR::IREmitter& ir, const IR::U32& operand_1,
const IR::U32& operand_2, CompareOp compare_op, bool is_signed);
[[nodiscard]] IR::U1 ExtendedIntegerCompare(IR::IREmitter& ir, const IR::U32& operand_1,
const IR::U32& operand_2, CompareOp compare_op,
bool is_signed);
[[nodiscard]] IR::U1 PredicateCombine(IR::IREmitter& ir, const IR::U1& predicate_1,
const IR::U1& predicate_2, BooleanOp bop);

43
src/shader_recompiler/frontend/maxwell/translate/impl/integer_compare_and_set.cpp
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@ -9,49 +9,6 @@
namespace Shader::Maxwell {
namespace {
IR::U1 ExtendedIntegerCompare(IR::IREmitter& ir, const IR::U32& operand_1, const IR::U32& operand_2,
CompareOp compare_op, bool is_signed) {
const IR::U32 zero{ir.Imm32(0)};
const IR::U32 carry{ir.Select(ir.GetCFlag(), ir.Imm32(1), zero)};
const IR::U1 z_flag{ir.GetZFlag()};
const IR::U32 intermediate{ir.IAdd(ir.IAdd(operand_1, ir.BitwiseNot(operand_2)), carry)};
const IR::U1 flip_logic{is_signed ? ir.Imm1(false)
: ir.LogicalXor(ir.ILessThan(operand_1, zero, true),
ir.ILessThan(operand_2, zero, true))};
switch (compare_op) {
case CompareOp::False:
return ir.Imm1(false);
case CompareOp::LessThan:
return IR::U1{ir.Select(flip_logic, ir.IGreaterThanEqual(intermediate, zero, true),
ir.ILessThan(intermediate, zero, true))};
case CompareOp::Equal:
return ir.LogicalAnd(ir.IEqual(intermediate, zero), z_flag);
case CompareOp::LessThanEqual: {
const IR::U1 base_cmp{ir.Select(flip_logic, ir.IGreaterThanEqual(intermediate, zero, true),
ir.ILessThan(intermediate, zero, true))};
return ir.LogicalOr(base_cmp, ir.LogicalAnd(ir.IEqual(intermediate, zero), z_flag));
}
case CompareOp::GreaterThan: {
const IR::U1 base_cmp{ir.Select(flip_logic, ir.ILessThanEqual(intermediate, zero, true),
ir.IGreaterThan(intermediate, zero, true))};
const IR::U1 not_z{ir.LogicalNot(z_flag)};
return ir.LogicalOr(base_cmp, ir.LogicalAnd(ir.IEqual(intermediate, zero), not_z));
}
case CompareOp::NotEqual:
return ir.LogicalOr(ir.INotEqual(intermediate, zero),
ir.LogicalAnd(ir.IEqual(intermediate, zero), ir.LogicalNot(z_flag)));
case CompareOp::GreaterThanEqual: {
const IR::U1 base_cmp{ir.Select(flip_logic, ir.ILessThan(intermediate, zero, true),
ir.IGreaterThanEqual(intermediate, zero, true))};
return ir.LogicalOr(base_cmp, ir.LogicalAnd(ir.IEqual(intermediate, zero), z_flag));
}
case CompareOp::True:
return ir.Imm1(true);
default:
throw NotImplementedException("Invalid compare op {}", compare_op);
}
}
IR::U1 IsetCompare(IR::IREmitter& ir, const IR::U32& operand_1, const IR::U32& operand_2,
CompareOp compare_op, bool is_signed, bool x) {
return x ? ExtendedIntegerCompare(ir, operand_1, operand_2, compare_op, is_signed)

11
src/shader_recompiler/frontend/maxwell/translate/impl/integer_set_predicate.cpp
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@ -9,6 +9,12 @@
namespace Shader::Maxwell {
namespace {
IR::U1 IsetpCompare(IR::IREmitter& ir, const IR::U32& operand_1, const IR::U32& operand_2,
CompareOp compare_op, bool is_signed, bool x) {
return x ? ExtendedIntegerCompare(ir, operand_1, operand_2, compare_op, is_signed)
: IntegerCompare(ir, operand_1, operand_2, compare_op, is_signed);
}
void ISETP(TranslatorVisitor& v, u64 insn, const IR::U32& op_b) {
union {
u64 raw;
@ -17,15 +23,18 @@ void ISETP(TranslatorVisitor& v, u64 insn, const IR::U32& op_b) {
BitField<8, 8, IR::Reg> src_reg_a;
BitField<39, 3, IR::Pred> bop_pred;
BitField<42, 1, u64> neg_bop_pred;
BitField<43, 1, u64> x;
BitField<45, 2, BooleanOp> bop;
BitField<48, 1, u64> is_signed;
BitField<49, 3, CompareOp> compare_op;
} const isetp{insn};
const bool is_signed{isetp.is_signed != 0};
const bool x{isetp.x != 0};
const BooleanOp bop{isetp.bop};
const CompareOp compare_op{isetp.compare_op};
const IR::U32 op_a{v.X(isetp.src_reg_a)};
const IR::U1 comparison{IntegerCompare(v.ir, op_a, op_b, compare_op, isetp.is_signed != 0)};
const IR::U1 comparison{IsetpCompare(v.ir, op_a, op_b, compare_op, is_signed, x)};
const IR::U1 bop_pred{v.ir.GetPred(isetp.bop_pred, isetp.neg_bop_pred != 0)};
const IR::U1 result_a{PredicateCombine(v.ir, comparison, bop_pred, bop)};
const IR::U1 result_b{PredicateCombine(v.ir, v.ir.LogicalNot(comparison), bop_pred, bop)};