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shader_recompiler: Implement S_FLBIT_I32_B32 and V_MUL_HI_I32. (#2793)

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squidbus 2025-04-16 08:08:09 -07:00 • committed by GitHub
parent 3bc876ca78
commit 52ab1ed04b
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8 changed files with 33 additions and 12 deletions
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13
src/shader_recompiler/frontend/translate/scalar_alu.cpp
View file

@ -110,6 +110,8 @@ void Translator::EmitScalarAlu(const GcnInst& inst) {
return S_FF1_I32_B32(inst);
case Opcode::S_FF1_I32_B64:
return S_FF1_I32_B64(inst);
case Opcode::S_FLBIT_I32_B32:
return S_FLBIT_I32_B32(inst);
case Opcode::S_BITSET0_B32:
return S_BITSET_B32(inst, 0);
case Opcode::S_BITSET1_B32:
@ -660,6 +662,17 @@ void Translator::S_FF1_I32_B64(const GcnInst& inst) {
SetDst(inst.dst[0], result);
}
void Translator::S_FLBIT_I32_B32(const GcnInst& inst) {
const IR::U32 src0{GetSrc(inst.src[0])};
// Gcn wants the MSB position counting from the left, but SPIR-V counts from the rightmost (LSB)
// position
const IR::U32 msb_pos = ir.FindUMsb(src0);
const IR::U32 pos_from_left = ir.ISub(ir.Imm32(31), msb_pos);
// Select 0xFFFFFFFF if src0 was 0
const IR::U1 cond = ir.INotEqual(src0, ir.Imm32(0));
SetDst(inst.dst[0], IR::U32{ir.Select(cond, pos_from_left, ir.Imm32(~0U))});
}
void Translator::S_BITSET_B32(const GcnInst& inst, u32 bit_value) {
const IR::U32 old_value{GetSrc(inst.dst[0])};
const IR::U32 offset{ir.BitFieldExtract(GetSrc(inst.src[0]), ir.Imm32(0U), ir.Imm32(5U))};

1
src/shader_recompiler/frontend/translate/translate.h
View file

@ -119,6 +119,7 @@ public:
void S_BCNT1_I32_B64(const GcnInst& inst);
void S_FF1_I32_B32(const GcnInst& inst);
void S_FF1_I32_B64(const GcnInst& inst);
void S_FLBIT_I32_B32(const GcnInst& inst);
void S_BITSET_B32(const GcnInst& inst, u32 bit_value);
void S_GETPC_B64(u32 pc, const GcnInst& inst);
void S_SAVEEXEC_B64(NegateMode negate, bool is_or, const GcnInst& inst);

4
src/shader_recompiler/frontend/translate/vector_alu.cpp
View file

@ -394,6 +394,8 @@ void Translator::EmitVectorAlu(const GcnInst& inst) {
return V_MUL_HI_U32(false, inst);
case Opcode::V_MUL_LO_I32:
return V_MUL_LO_U32(inst);
case Opcode::V_MUL_HI_I32:
return V_MUL_HI_U32(true, inst);
case Opcode::V_MAD_U64_U32:
return V_MAD_U64_U32(inst);
case Opcode::V_NOP:
@ -1279,7 +1281,7 @@ void Translator::V_MUL_LO_U32(const GcnInst& inst) {
void Translator::V_MUL_HI_U32(bool is_signed, const GcnInst& inst) {
const IR::U32 src0{GetSrc(inst.src[0])};
const IR::U32 src1{GetSrc(inst.src[1])};
const IR::U32 hi{ir.CompositeExtract(ir.IMulExt(src0, src1, is_signed), 1)};
const IR::U32 hi{ir.IMulHi(src0, src1, is_signed)};
SetDst(inst.dst[0], hi);
}