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SPU LLVM: fix *QBI instructions (UB)

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Improve codegen at the cost of unnecessary shuffle, use u64[2]
This commit is contained in:
Nekotekina 2018-05-28 22:30:23 +03:00
parent 37577714fa
commit a2253e840f
1 changed files with 9 additions and 9 deletions
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18
rpcs3/Emu/Cell/SPURecompiler.cpp
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@ -2021,23 +2021,23 @@ public:
void ROTQBI(spu_opcode_t op)
{
const auto a = get_vr(op.ra);
const auto b = zshuffle<u32[4]>(get_vr<u32[4]>(op.rb) & 0x7, 3, 3, 3, 3);
set_vr(op.rt, a << b | zshuffle<u32[4]>(a, 3, 0, 1, 2) >> (32 - b));
const auto a = get_vr<u64[2]>(op.ra);
const auto b = eval((get_vr<u64[2]>(op.rb) >> 32) & 0x7);
set_vr(op.rt, a << zshuffle<u64[2]>(b, 1, 1) | zshuffle<u64[2]>(a, 1, 0) >> 56 >> zshuffle<u64[2]>(8 - b, 1, 1));
}
void ROTQMBI(spu_opcode_t op)
{
const auto a = get_vr(op.ra);
const auto b = zshuffle<u32[4]>(-get_vr<u32[4]>(op.rb) & 0x7, 3, 3, 3, 3);
set_vr(op.rt, a >> b | zshuffle<u32[4]>(a, 1, 2, 3, 4) << (32 - b));
const auto a = get_vr<u64[2]>(op.ra);
const auto b = eval(-(get_vr<u64[2]>(op.rb) >> 32) & 0x7);
set_vr(op.rt, a >> zshuffle<u64[2]>(b, 1, 1) | zshuffle<u64[2]>(a, 1, 2) << 56 << zshuffle<u64[2]>(8 - b, 1, 1));
}
void SHLQBI(spu_opcode_t op)
{
const auto a = get_vr(op.ra);
const auto b = zshuffle<u32[4]>(get_vr<u32[4]>(op.rb) & 0x7, 3, 3, 3, 3);
set_vr(op.rt, a << b | zshuffle<u32[4]>(a, 4, 0, 1, 2) >> (32 - b));
const auto a = get_vr<u64[2]>(op.ra);
const auto b = eval((get_vr<u64[2]>(op.rb) >> 32) & 0x7);
set_vr(op.rt, a << zshuffle<u64[2]>(b, 1, 1) | zshuffle<u64[2]>(a, 2, 0) >> 56 >> zshuffle<u64[2]>(8 - b, 1, 1));
}
void ROTQBY(spu_opcode_t op)