mirrors/shadPS4
1
0
Fork 0
mirror of https://github.com/shadps4-emu/shadPS4.git synced 2025-12-10 13:48:40 +00:00
Code Issues Packages Projects Releases Wiki Activity

s_flbit_i32_b64 (#3033)

Browse Source 
* s_flbit_i32_b64

* Split FindUMsb64 into two 32bit ops
This commit is contained in:
Marcin Mikołajczyk
2025-06-05 23:33:25 +02:00
committed by GitHub
parent 43bf4ed1bc
commit fff3bf9917
7 changed files with 40 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
src/shader_recompiler/frontend/translate/scalar_alu.cpp
View File

@@ -114,6 +114,8 @@ void Translator::EmitScalarAlu(const GcnInst& inst) {
return S_FF1_I32_B64(inst);
case Opcode::S_FLBIT_I32_B32:
return S_FLBIT_I32_B32(inst);
case Opcode::S_FLBIT_I32_B64:
return S_FLBIT_I32_B64(inst);
case Opcode::S_BITSET0_B32:
return S_BITSET_B32(inst, 0);
case Opcode::S_BITSET1_B32:
@@ -686,6 +688,17 @@ void Translator::S_FLBIT_I32_B32(const GcnInst& inst) {
SetDst(inst.dst[0], IR::U32{ir.Select(cond, pos_from_left, ir.Imm32(~0U))});
}
void Translator::S_FLBIT_I32_B64(const GcnInst& inst) {
const IR::U64 src0{GetSrc64(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(63), msb_pos);
// Select 0xFFFFFFFF if src0 was 0
const IR::U1 cond = ir.INotEqual(src0, ir.Imm64(u64(0u)));
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

@@ -121,6 +121,7 @@ public:
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_FLBIT_I32_B64(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);