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use much faster exp2/cos approximations in ffmpeg, large decrease in cpu usage on my machine on decoder thread

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properly byteswap r13 for spinlock
Add PPCOpcodeBits
stub out broken fpscr updating in ppc_hir_builder. it's just code that repeatedly does nothing right now.
add note about 0 opcode bytes being executed to ppc_frontend
Add assert to check that function end is greater than function start, can happen with malformed functions
Disable prefetch and cachecontrol by default, automatic hardware prefetchers already do the job for the most part
minor cleanup in simplification_pass, dont loop optimizations, let the pass manager do it for us
Add experimental "delay_via_maybeyield" cvar, which uses MaybeYield to "emulate" the db16cyc instruction
Add much faster/simpler way of directly calling guest functions, no longer have to do a byte by byte search through the generated code
Generate label string ids on the fly
Fix unused function warnings for prefetch on clang, fix many other clang warnings
Eliminated majority of CallNativeSafes by replacing them with naive generic code paths.
^ Vector rotate left, vector shift left, vector shift right, vector shift arithmetic right, and vector average are included
These naive paths are implemented small loops that stash the two inputs to the stack and load them in gprs from there, they are not particularly fast but should be an order of magnitude faster than callnativesafe
to a host function, which would involve a call, stashing all volatile registers, an indirect call, potentially setting up a stack frame for the arrays that the inputs get stashed to, the actual operations, a return, loading all volatile registers, a return, etc
Added the fast SHR_V128 path back in
Implement signed vector average byte, signed vector average word. previously we were emitting no code for them. signed vector average byte appears in many games
Fix bug with signed vector average 32, we were doing unsigned shift, turning negative values into big positive ones potentially
This commit is contained in:
chss95cs@gmail.com
2022-10-30 08:48:58 -07:00
parent d8b7b3ecec
commit 550d1d0a7c
26 changed files with 881 additions and 547 deletions
Download Patch File Download Diff File Expand all files Collapse all files

96
src/xenia/cpu/backend/x64/x64_emitter.cc
View File

@@ -46,10 +46,6 @@ DEFINE_bool(ignore_undefined_externs, true,
DEFINE_bool(emit_source_annotations, false,
"Add extra movs and nops to make disassembly easier to read.",
"CPU");
DEFINE_bool(resolve_rel32_guest_calls, true,
"Experimental optimization, directly call already resolved "
"functions via x86 rel32 call/jmp",
"CPU");
DEFINE_bool(enable_incorrect_roundingmode_behavior, false,
"Disables the FPU/VMX MXCSR sharing workaround, potentially "
@@ -78,7 +74,6 @@ using namespace xe::literals;
static const size_t kMaxCodeSize = 1_MiB;
static const size_t kStashOffset = 32;
// static const size_t kStashOffsetHigh = 32 + 32;
const uint32_t X64Emitter::gpr_reg_map_[X64Emitter::GPR_COUNT] = {
@@ -141,55 +136,6 @@ bool X64Emitter::Emit(GuestFunction* function, HIRBuilder* builder,
return true;
}
#pragma pack(push, 1)
struct RGCEmitted {
uint8_t ff_;
uint32_t rgcid_;
};
#pragma pack(pop)
#if 0
void X64Emitter::InjectCallAddresses(void* new_execute_address) {
for (auto&& callsite : call_sites_) {
RGCEmitted* hunter = (RGCEmitted*)new_execute_address;
while (hunter->ff_ != 0xFF || hunter->rgcid_ != callsite.offset_) {
hunter =
reinterpret_cast<RGCEmitted*>(reinterpret_cast<char*>(hunter) + 1);
}
hunter->ff_ = callsite.is_jump_ ? 0xE9 : 0xE8;
hunter->rgcid_ =
static_cast<uint32_t>(static_cast<intptr_t>(callsite.destination_) -
reinterpret_cast<intptr_t>(hunter + 1));
}
}
#else
void X64Emitter::InjectCallAddresses(void* new_execute_address) {
#if 0
RGCEmitted* hunter = (RGCEmitted*)new_execute_address;
std::map<uint32_t, ResolvableGuestCall*> id_to_rgc{};
for (auto&& callsite : call_sites_) {
id_to_rgc[callsite.offset_] = &callsite;
}
#else
RGCEmitted* hunter = (RGCEmitted*)new_execute_address;
for (auto&& callsite : call_sites_) {
while (hunter->ff_ != 0xFF || hunter->rgcid_ != callsite.offset_) {
hunter =
reinterpret_cast<RGCEmitted*>(reinterpret_cast<char*>(hunter) + 1);
}
hunter->ff_ = callsite.is_jump_ ? 0xE9 : 0xE8;
hunter->rgcid_ =
static_cast<uint32_t>(static_cast<intptr_t>(callsite.destination_) -
reinterpret_cast<intptr_t>(hunter + 1));
}
#endif
}
#endif
void* X64Emitter::Emplace(const EmitFunctionInfo& func_info,
GuestFunction* function) {
// To avoid changing xbyak, we do a switcharoo here.
@@ -207,10 +153,6 @@ void* X64Emitter::Emplace(const EmitFunctionInfo& func_info,
if (function) {
code_cache_->PlaceGuestCode(function->address(), top_, func_info, function,
new_execute_address, new_write_address);
if (cvars::resolve_rel32_guest_calls) {
InjectCallAddresses(new_execute_address);
}
} else {
code_cache_->PlaceHostCode(0, top_, func_info, new_execute_address,
new_write_address);
@@ -219,7 +161,6 @@ void* X64Emitter::Emplace(const EmitFunctionInfo& func_info,
ready();
top_ = old_address;
reset();
call_sites_.clear();
tail_code_.clear();
for (auto&& cached_label : label_cache_) {
delete cached_label;
@@ -336,7 +277,7 @@ bool X64Emitter::Emit(HIRBuilder* builder, EmitFunctionInfo& func_info) {
// Mark block labels.
auto label = block->label_head;
while (label) {
L(label->name);
L(std::to_string(label->id));
label = label->next;
}
@@ -418,7 +359,6 @@ void X64Emitter::EmitProfilerEpilogue() {
// actually... lets just try without atomics lol
// lock();
add(qword[r10], rdx);
}
#endif
}
@@ -534,44 +474,23 @@ void X64Emitter::Call(const hir::Instr* instr, GuestFunction* function) {
auto fn = static_cast<X64Function*>(function);
// Resolve address to the function to call and store in rax.
if (cvars::resolve_rel32_guest_calls && fn->machine_code()) {
ResolvableGuestCall rgc;
rgc.destination_ = uint32_t(uint64_t(fn->machine_code()));
rgc.offset_ = current_rgc_id_;
current_rgc_id_++;
if (fn->machine_code()) {
if (!(instr->flags & hir::CALL_TAIL)) {
mov(rcx, qword[rsp + StackLayout::GUEST_CALL_RET_ADDR]);
db(0xFF);
rgc.is_jump_ = false;
dd(rgc.offset_);
call((void*)fn->machine_code());
} else {
// tail call
EmitTraceUserCallReturn();
rgc.is_jump_ = true;
EmitProfilerEpilogue();
// Pass the callers return address over.
mov(rcx, qword[rsp + StackLayout::GUEST_RET_ADDR]);
add(rsp, static_cast<uint32_t>(stack_size()));
db(0xFF);
dd(rgc.offset_);
jmp((void*)fn->machine_code(), T_NEAR);
}
call_sites_.push_back(rgc);
return;
}
if (fn->machine_code()) {
// TODO(benvanik): is it worth it to do this? It removes the need for
// a ResolveFunction call, but makes the table less useful.
assert_zero(uint64_t(fn->machine_code()) & 0xFFFFFFFF00000000);
// todo: this should be changed so that we can actually do a call to
// fn->machine_code. the code will be emitted near us, so 32 bit rel jmp
// should be possible
mov(eax, uint32_t(uint64_t(fn->machine_code())));
} else if (code_cache_->has_indirection_table()) {
// Load the pointer to the indirection table maintained in X64CodeCache.
// The target dword will either contain the address of the generated code
@@ -1017,7 +936,10 @@ static const vec128_t xmm_consts[] = {
/*XMMSTVLShuffle*/
v128_setr_bytes(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15),
/* XMMSTVRSwapMask*/
vec128b((uint8_t)0x83)};
vec128b((uint8_t)0x83), /*XMMVSRShlByteshuf*/
v128_setr_bytes(13, 14, 15, 8, 9, 10, 11, 4, 5, 6, 7, 0, 1, 2, 3, 0x80),
// XMMVSRMask
vec128b(1)};
void* X64Emitter::FindByteConstantOffset(unsigned bytevalue) {
for (auto& vec : xmm_consts) {

16
src/xenia/cpu/backend/x64/x64_emitter.h
View File

@@ -172,7 +172,9 @@ enum XmmConst {
XMMLVLShuffle,
XMMLVRCmp16,
XMMSTVLShuffle,
XMMSTVRSwapMask // swapwordmask with bit 7 set
XMMSTVRSwapMask, // swapwordmask with bit 7 set
XMMVSRShlByteshuf,
XMMVSRMask
};
using amdfx::xopcompare_e;
@@ -190,13 +192,6 @@ class XbyakAllocator : public Xbyak::Allocator {
virtual bool useProtect() const { return false; }
};
class ResolvableGuestCall {
public:
bool is_jump_;
uintptr_t destination_;
// rgcid
unsigned offset_;
};
class X64Emitter;
using TailEmitCallback = std::function<void(X64Emitter& e, Xbyak::Label& lbl)>;
struct TailEmitter {
@@ -220,7 +215,6 @@ class X64Emitter : public Xbyak::CodeGenerator {
uint32_t debug_info_flags, FunctionDebugInfo* debug_info,
void** out_code_address, size_t* out_code_size,
std::vector<SourceMapEntry>* out_source_map);
void InjectCallAddresses(void* new_execute_addr);
public:
// Reserved: rsp, rsi, rdi
@@ -230,7 +224,7 @@ class X64Emitter : public Xbyak::CodeGenerator {
// xmm4-xmm15 (save to get xmm3)
static const int GPR_COUNT = 7;
static const int XMM_COUNT = 12;
static constexpr size_t kStashOffset = 32;
static void SetupReg(const hir::Value* v, Xbyak::Reg8& r) {
auto idx = gpr_reg_map_[v->reg.index];
r = Xbyak::Reg8(idx);
@@ -410,8 +404,6 @@ class X64Emitter : public Xbyak::CodeGenerator {
static const uint32_t gpr_reg_map_[GPR_COUNT];
static const uint32_t xmm_reg_map_[XMM_COUNT];
uint32_t current_rgc_id_ = 0xEEDDF00F;
std::vector<ResolvableGuestCall> call_sites_;
/*
set to true if the low 32 bits of membase == 0.
only really advantageous if you are storing 32 bit 0 to a displaced address,

44
src/xenia/cpu/backend/x64/x64_seq_control.cc
View File

@@ -25,46 +25,46 @@ static void EmitFusedBranch(X64Emitter& e, const T& i) {
bool valid = i.instr->prev && i.instr->prev->dest == i.src1.value;
auto opcode = valid ? i.instr->prev->opcode->num : -1;
if (valid) {
auto name = i.src2.value->name;
std::string name = i.src2.value->GetIdString();
switch (opcode) {
case OPCODE_COMPARE_EQ:
e.je(name, e.T_NEAR);
e.je(std::move(name), e.T_NEAR);
break;
case OPCODE_COMPARE_NE:
e.jne(name, e.T_NEAR);
e.jne(std::move(name), e.T_NEAR);
break;
case OPCODE_COMPARE_SLT:
e.jl(name, e.T_NEAR);
e.jl(std::move(name), e.T_NEAR);
break;
case OPCODE_COMPARE_SLE:
e.jle(name, e.T_NEAR);
e.jle(std::move(name), e.T_NEAR);
break;
case OPCODE_COMPARE_SGT:
e.jg(name, e.T_NEAR);
e.jg(std::move(name), e.T_NEAR);
break;
case OPCODE_COMPARE_SGE:
e.jge(name, e.T_NEAR);
e.jge(std::move(name), e.T_NEAR);
break;
case OPCODE_COMPARE_ULT:
e.jb(name, e.T_NEAR);
e.jb(std::move(name), e.T_NEAR);
break;
case OPCODE_COMPARE_ULE:
e.jbe(name, e.T_NEAR);
e.jbe(std::move(name), e.T_NEAR);
break;
case OPCODE_COMPARE_UGT:
e.ja(name, e.T_NEAR);
e.ja(std::move(name), e.T_NEAR);
break;
case OPCODE_COMPARE_UGE:
e.jae(name, e.T_NEAR);
e.jae(std::move(name), e.T_NEAR);
break;
default:
e.test(i.src1, i.src1);
e.jnz(name, e.T_NEAR);
e.jnz(std::move(name), e.T_NEAR);
break;
}
} else {
e.test(i.src1, i.src1);
e.jnz(i.src2.value->name, e.T_NEAR);
e.jnz(i.src2.value->GetIdString(), e.T_NEAR);
}
}
// ============================================================================
@@ -490,7 +490,7 @@ EMITTER_OPCODE_TABLE(OPCODE_SET_RETURN_ADDRESS, SET_RETURN_ADDRESS);
// ============================================================================
struct BRANCH : Sequence<BRANCH, I<OPCODE_BRANCH, VoidOp, LabelOp>> {
static void Emit(X64Emitter& e, const EmitArgType& i) {
e.jmp(i.src1.value->name, e.T_NEAR);
e.jmp(i.src1.value->GetIdString(), e.T_NEAR);
}
};
EMITTER_OPCODE_TABLE(OPCODE_BRANCH, BRANCH);
@@ -534,7 +534,7 @@ struct BRANCH_TRUE_F32
Xmm input = GetInputRegOrConstant(e, i.src1, e.xmm0);
e.vmovd(e.eax, input);
e.test(e.eax, e.eax);
e.jnz(i.src2.value->name, e.T_NEAR);
e.jnz(i.src2.value->GetIdString(), e.T_NEAR);
}
};
struct BRANCH_TRUE_F64
@@ -543,7 +543,7 @@ struct BRANCH_TRUE_F64
Xmm input = GetInputRegOrConstant(e, i.src1, e.xmm0);
e.vmovq(e.rax, input);
e.test(e.rax, e.rax);
e.jnz(i.src2.value->name, e.T_NEAR);
e.jnz(i.src2.value->GetIdString(), e.T_NEAR);
}
};
EMITTER_OPCODE_TABLE(OPCODE_BRANCH_TRUE, BRANCH_TRUE_I8, BRANCH_TRUE_I16,
@@ -557,7 +557,7 @@ struct BRANCH_FALSE_I8
: Sequence<BRANCH_FALSE_I8, I<OPCODE_BRANCH_FALSE, VoidOp, I8Op, LabelOp>> {
static void Emit(X64Emitter& e, const EmitArgType& i) {
e.test(i.src1, i.src1);
e.jz(i.src2.value->name, e.T_NEAR);
e.jz(i.src2.value->GetIdString(), e.T_NEAR);
}
};
struct BRANCH_FALSE_I16
@@ -565,7 +565,7 @@ struct BRANCH_FALSE_I16
I<OPCODE_BRANCH_FALSE, VoidOp, I16Op, LabelOp>> {
static void Emit(X64Emitter& e, const EmitArgType& i) {
e.test(i.src1, i.src1);
e.jz(i.src2.value->name, e.T_NEAR);
e.jz(i.src2.value->GetIdString(), e.T_NEAR);
}
};
struct BRANCH_FALSE_I32
@@ -573,7 +573,7 @@ struct BRANCH_FALSE_I32
I<OPCODE_BRANCH_FALSE, VoidOp, I32Op, LabelOp>> {
static void Emit(X64Emitter& e, const EmitArgType& i) {
e.test(i.src1, i.src1);
e.jz(i.src2.value->name, e.T_NEAR);
e.jz(i.src2.value->GetIdString(), e.T_NEAR);
}
};
struct BRANCH_FALSE_I64
@@ -581,7 +581,7 @@ struct BRANCH_FALSE_I64
I<OPCODE_BRANCH_FALSE, VoidOp, I64Op, LabelOp>> {
static void Emit(X64Emitter& e, const EmitArgType& i) {
e.test(i.src1, i.src1);
e.jz(i.src2.value->name, e.T_NEAR);
e.jz(i.src2.value->GetIdString(), e.T_NEAR);
}
};
struct BRANCH_FALSE_F32
@@ -591,7 +591,7 @@ struct BRANCH_FALSE_F32
Xmm input = GetInputRegOrConstant(e, i.src1, e.xmm0);
e.vmovd(e.eax, input);
e.test(e.eax, e.eax);
e.jz(i.src2.value->name, e.T_NEAR);
e.jz(i.src2.value->GetIdString(), e.T_NEAR);
}
};
struct BRANCH_FALSE_F64
@@ -601,7 +601,7 @@ struct BRANCH_FALSE_F64
Xmm input = GetInputRegOrConstant(e, i.src1, e.xmm0);
e.vmovq(e.rax, input);
e.test(e.rax, e.rax);
e.jz(i.src2.value->name, e.T_NEAR);
e.jz(i.src2.value->GetIdString(), e.T_NEAR);
}
};
EMITTER_OPCODE_TABLE(OPCODE_BRANCH_FALSE, BRANCH_FALSE_I8, BRANCH_FALSE_I16,

702
src/xenia/cpu/backend/x64/x64_seq_vector.cc
View File

@@ -805,22 +805,7 @@ EMITTER_OPCODE_TABLE(OPCODE_VECTOR_SUB, VECTOR_SUB);
// ============================================================================
// OPCODE_VECTOR_SHL
// ============================================================================
template <typename T, std::enable_if_t<std::is_integral<T>::value, int> = 0>
static __m128i EmulateVectorShl(void*, __m128i src1, __m128i src2) {
alignas(16) T value[16 / sizeof(T)];
alignas(16) T shamt[16 / sizeof(T)];
// Load SSE registers into a C array.
_mm_store_si128(reinterpret_cast<__m128i*>(value), src1);
_mm_store_si128(reinterpret_cast<__m128i*>(shamt), src2);
for (size_t i = 0; i < (16 / sizeof(T)); ++i) {
value[i] = value[i] << (shamt[i] & ((sizeof(T) * 8) - 1));
}
// Store result and return it.
return _mm_load_si128(reinterpret_cast<__m128i*>(value));
}
static XmmConst GetShiftmaskForType(unsigned typ) {
if (typ == INT8_TYPE) {
return XMMXOPByteShiftMask;
@@ -914,28 +899,14 @@ struct VECTOR_SHL_V128
}
}
if (all_same) {
// mul by two
/*if (seenvalue == 1) {
e.vpaddb(i.dest, i.src1, i.src1);
} else if (seenvalue == 2) {
e.vpaddb(i.dest, i.src1, i.src1);
e.vpaddb(i.dest, i.dest, i.dest);
} else if (seenvalue == 3) {
// mul by 8
e.vpaddb(i.dest, i.src1, i.src1);
e.vpaddb(i.dest, i.dest, i.dest);
e.vpaddb(i.dest, i.dest, i.dest);
} else*/
{
e.vpmovzxbw(e.ymm0, i.src1);
e.vpsllw(e.ymm0, e.ymm0, seenvalue);
e.vextracti128(e.xmm1, e.ymm0, 1);
e.vpmovzxbw(e.ymm0, i.src1);
e.vpsllw(e.ymm0, e.ymm0, seenvalue);
e.vextracti128(e.xmm1, e.ymm0, 1);
e.vpshufb(e.xmm0, e.xmm0, e.GetXmmConstPtr(XMMShortsToBytes));
e.vpshufb(e.xmm1, e.xmm1, e.GetXmmConstPtr(XMMShortsToBytes));
e.vpunpcklqdq(i.dest, e.xmm0, e.xmm1);
return;
}
e.vpshufb(e.xmm0, e.xmm0, e.GetXmmConstPtr(XMMShortsToBytes));
e.vpshufb(e.xmm1, e.xmm1, e.GetXmmConstPtr(XMMShortsToBytes));
e.vpunpcklqdq(i.dest, e.xmm0, e.xmm1);
return;
} else {
e.LoadConstantXmm(e.xmm2, constmask);
@@ -966,14 +937,41 @@ struct VECTOR_SHL_V128
}
}
}
if (i.src2.is_constant) {
e.lea(e.GetNativeParam(1), e.StashConstantXmm(1, i.src2.constant()));
unsigned stack_offset_src1 = StackLayout::GUEST_SCRATCH;
unsigned stack_offset_src2 = StackLayout::GUEST_SCRATCH + 16;
if (i.src1.is_constant) {
e.StashConstantXmm(0, i.src1.constant());
stack_offset_src1 = X64Emitter::kStashOffset;
} else {
e.lea(e.GetNativeParam(1), e.StashXmm(1, i.src2));
e.vmovdqa(e.ptr[e.rsp + stack_offset_src1], i.src1);
}
e.lea(e.GetNativeParam(0), e.StashXmm(0, i.src1));
e.CallNativeSafe(reinterpret_cast<void*>(EmulateVectorShl<uint8_t>));
e.vmovaps(i.dest, e.xmm0);
if (i.src2.is_constant) {
e.StashConstantXmm(1, i.src2.constant());
stack_offset_src2 = X64Emitter::kStashOffset + 16;
} else {
e.vmovdqa(e.ptr[e.rsp + stack_offset_src2], i.src2);
}
Xbyak::Label looper;
e.xor_(e.edx, e.edx);
e.L(looper);
e.movzx(e.ecx, e.byte[e.rsp + stack_offset_src2 + e.rdx]);
e.shl(e.byte[e.rsp + stack_offset_src1 + e.rdx], e.cl);
if (e.IsFeatureEnabled(kX64FlagsIndependentVars)) {
e.inc(e.edx);
} else {
e.add(e.edx, 1);
}
e.cmp(e.edx, 16);
e.jnz(looper);
e.vmovdqa(i.dest, e.byte[e.rsp + stack_offset_src1]);
}
static void EmitInt16(X64Emitter& e, const EmitArgType& i) {
Xmm src1;
@@ -1022,14 +1020,32 @@ struct VECTOR_SHL_V128
// TODO(benvanik): native version (with shift magic).
e.L(emu);
unsigned stack_offset_src1 = StackLayout::GUEST_SCRATCH;
unsigned stack_offset_src2 = StackLayout::GUEST_SCRATCH + 16;
e.vmovdqa(e.ptr[e.rsp + stack_offset_src1], src1);
if (i.src2.is_constant) {
e.lea(e.GetNativeParam(1), e.StashConstantXmm(1, i.src2.constant()));
e.StashConstantXmm(1, i.src2.constant());
stack_offset_src2 = X64Emitter::kStashOffset + 16;
} else {
e.lea(e.GetNativeParam(1), e.StashXmm(1, i.src2));
e.vmovdqa(e.ptr[e.rsp + stack_offset_src2], i.src2);
}
e.lea(e.GetNativeParam(0), e.StashXmm(0, src1));
e.CallNativeSafe(reinterpret_cast<void*>(EmulateVectorShl<uint16_t>));
e.vmovaps(i.dest, e.xmm0);
Xbyak::Label looper;
e.xor_(e.edx, e.edx);
e.L(looper);
e.movzx(e.ecx, e.word[e.rsp + stack_offset_src2 + e.rdx]);
e.shl(e.word[e.rsp + stack_offset_src1 + e.rdx], e.cl);
e.add(e.edx, 2);
e.cmp(e.edx, 16);
e.jnz(looper);
e.vmovdqa(i.dest, e.byte[e.rsp + stack_offset_src1]);
e.L(end);
}
@@ -1098,14 +1114,32 @@ struct VECTOR_SHL_V128
// TODO(benvanik): native version (with shift magic).
e.L(emu);
unsigned stack_offset_src1 = StackLayout::GUEST_SCRATCH;
unsigned stack_offset_src2 = StackLayout::GUEST_SCRATCH + 16;
e.vmovdqa(e.ptr[e.rsp + stack_offset_src1], src1);
if (i.src2.is_constant) {
e.lea(e.GetNativeParam(1), e.StashConstantXmm(1, i.src2.constant()));
e.StashConstantXmm(1, i.src2.constant());
stack_offset_src2 = X64Emitter::kStashOffset + 16;
} else {
e.lea(e.GetNativeParam(1), e.StashXmm(1, i.src2));
e.vmovdqa(e.ptr[e.rsp + stack_offset_src2], i.src2);
}
e.lea(e.GetNativeParam(0), e.StashXmm(0, src1));
e.CallNativeSafe(reinterpret_cast<void*>(EmulateVectorShl<uint32_t>));
e.vmovaps(i.dest, e.xmm0);
Xbyak::Label looper;
e.xor_(e.edx, e.edx);
e.L(looper);
e.mov(e.ecx, e.dword[e.rsp + stack_offset_src2 + e.rdx]);
e.shl(e.dword[e.rsp + stack_offset_src1 + e.rdx], e.cl);
e.add(e.edx, 4);
e.cmp(e.edx, 16);
e.jnz(looper);
e.vmovdqa(i.dest, e.byte[e.rsp + stack_offset_src1]);
e.L(end);
}
@@ -1116,22 +1150,6 @@ EMITTER_OPCODE_TABLE(OPCODE_VECTOR_SHL, VECTOR_SHL_V128);
// ============================================================================
// OPCODE_VECTOR_SHR
// ============================================================================
template <typename T, std::enable_if_t<std::is_integral<T>::value, int> = 0>
static __m128i EmulateVectorShr(void*, __m128i src1, __m128i src2) {
alignas(16) T value[16 / sizeof(T)];
alignas(16) T shamt[16 / sizeof(T)];
// Load SSE registers into a C array.
_mm_store_si128(reinterpret_cast<__m128i*>(value), src1);
_mm_store_si128(reinterpret_cast<__m128i*>(shamt), src2);
for (size_t i = 0; i < (16 / sizeof(T)); ++i) {
value[i] = value[i] >> (shamt[i] & ((sizeof(T) * 8) - 1));
}
// Store result and return it.
return _mm_load_si128(reinterpret_cast<__m128i*>(value));
}
struct VECTOR_SHR_V128
: Sequence<VECTOR_SHR_V128, I<OPCODE_VECTOR_SHR, V128Op, V128Op, V128Op>> {
@@ -1179,34 +1197,63 @@ struct VECTOR_SHR_V128
}
static void EmitInt8(X64Emitter& e, const EmitArgType& i) {
// TODO(benvanik): native version (with shift magic).
if (i.src2.is_constant) {
if (e.IsFeatureEnabled(kX64EmitGFNI)) {
const auto& shamt = i.src2.constant();
bool all_same = true;
for (size_t n = 0; n < 16 - n; ++n) {
if (shamt.u8[n] != shamt.u8[n + 1]) {
all_same = false;
break;
}
}
if (all_same) {
// Every count is the same, so we can use gf2p8affineqb.
const uint8_t shift_amount = shamt.u8[0] & 0b111;
const uint64_t shift_matrix = UINT64_C(0x0102040810204080)
<< (shift_amount * 8);
e.vgf2p8affineqb(i.dest, i.src1,
e.StashConstantXmm(0, vec128q(shift_matrix)), 0);
return;
if (i.src2.is_constant && e.IsFeatureEnabled(kX64EmitGFNI)) {
const auto& shamt = i.src2.constant();
bool all_same = true;
for (size_t n = 0; n < 16 - n; ++n) {
if (shamt.u8[n] != shamt.u8[n + 1]) {
all_same = false;
break;
}
}
e.lea(e.GetNativeParam(1), e.StashConstantXmm(1, i.src2.constant()));
} else {
e.lea(e.GetNativeParam(1), e.StashXmm(1, i.src2));
if (all_same) {
// Every count is the same, so we can use gf2p8affineqb.
const uint8_t shift_amount = shamt.u8[0] & 0b111;
const uint64_t shift_matrix = UINT64_C(0x0102040810204080)
<< (shift_amount * 8);
e.vgf2p8affineqb(i.dest, i.src1,
e.StashConstantXmm(0, vec128q(shift_matrix)), 0);
return;
}
}
e.lea(e.GetNativeParam(0), e.StashXmm(0, i.src1));
e.CallNativeSafe(reinterpret_cast<void*>(EmulateVectorShr<uint8_t>));
e.vmovaps(i.dest, e.xmm0);
unsigned stack_offset_src1 = StackLayout::GUEST_SCRATCH;
unsigned stack_offset_src2 = StackLayout::GUEST_SCRATCH + 16;
if (i.src1.is_constant) {
e.StashConstantXmm(0, i.src1.constant());
stack_offset_src1 = X64Emitter::kStashOffset;
} else {
e.vmovdqa(e.ptr[e.rsp + stack_offset_src1], i.src1);
}
if (i.src2.is_constant) {
e.StashConstantXmm(1, i.src2.constant());
stack_offset_src2 = X64Emitter::kStashOffset + 16;
} else {
e.vmovdqa(e.ptr[e.rsp + stack_offset_src2], i.src2);
}
Xbyak::Label looper;
e.xor_(e.edx, e.edx);
e.L(looper);
// movzx is to eliminate any possible dep on previous value of rcx at start
// of loop
e.movzx(e.ecx, e.byte[e.rsp + stack_offset_src2 + e.rdx]);
// maybe using a memory operand as the left side isn't the best idea lol,
// still better than callnativesafe though agners docs have no timing info
// on shx [m], cl so shrug
e.shr(e.byte[e.rsp + stack_offset_src1 + e.rdx], e.cl);
if (e.IsFeatureEnabled(kX64FlagsIndependentVars)) {
e.inc(e.edx);
} else {
e.add(e.edx, 1);
}
e.cmp(e.edx, 16);
e.jnz(looper);
e.vmovdqa(i.dest, e.byte[e.rsp + stack_offset_src1]);
}
static void EmitInt16(X64Emitter& e, const EmitArgType& i) {
@@ -1248,14 +1295,38 @@ struct VECTOR_SHR_V128
// TODO(benvanik): native version (with shift magic).
e.L(emu);
if (i.src2.is_constant) {
e.lea(e.GetNativeParam(1), e.StashConstantXmm(1, i.src2.constant()));
unsigned stack_offset_src1 = StackLayout::GUEST_SCRATCH;
unsigned stack_offset_src2 = StackLayout::GUEST_SCRATCH + 16;
if (i.src1.is_constant) {
e.StashConstantXmm(0, i.src1.constant());
stack_offset_src1 = X64Emitter::kStashOffset;
} else {
e.lea(e.GetNativeParam(1), e.StashXmm(1, i.src2));
e.vmovdqa(e.ptr[e.rsp + stack_offset_src1], i.src1);
}
e.lea(e.GetNativeParam(0), e.StashXmm(0, i.src1));
e.CallNativeSafe(reinterpret_cast<void*>(EmulateVectorShr<uint16_t>));
e.vmovaps(i.dest, e.xmm0);
if (i.src2.is_constant) {
e.StashConstantXmm(1, i.src2.constant());
stack_offset_src2 = X64Emitter::kStashOffset + 16;
} else {
e.vmovdqa(e.ptr[e.rsp + stack_offset_src2], i.src2);
}
Xbyak::Label looper;
e.xor_(e.edx, e.edx);
e.L(looper);
e.movzx(e.ecx, e.word[e.rsp + stack_offset_src2 + e.rdx]);
e.shr(e.word[e.rsp + stack_offset_src1 + e.rdx], e.cl);
e.add(e.edx, 2);
e.cmp(e.edx, 16);
e.jnz(looper);
e.vmovdqa(i.dest, e.byte[e.rsp + stack_offset_src1]);
e.L(end);
}
@@ -1324,14 +1395,37 @@ struct VECTOR_SHR_V128
// TODO(benvanik): native version.
e.L(emu);
if (i.src2.is_constant) {
e.lea(e.GetNativeParam(1), e.StashConstantXmm(1, i.src2.constant()));
unsigned stack_offset_src1 = StackLayout::GUEST_SCRATCH;
unsigned stack_offset_src2 = StackLayout::GUEST_SCRATCH + 16;
if (i.src1.is_constant) {
e.StashConstantXmm(0, i.src1.constant());
stack_offset_src1 = X64Emitter::kStashOffset;
} else {
e.lea(e.GetNativeParam(1), e.StashXmm(1, i.src2));
e.vmovdqa(e.ptr[e.rsp + stack_offset_src1], i.src1);
}
e.lea(e.GetNativeParam(0), e.StashXmm(0, src1));
e.CallNativeSafe(reinterpret_cast<void*>(EmulateVectorShr<uint32_t>));
e.vmovaps(i.dest, e.xmm0);
if (i.src2.is_constant) {
e.StashConstantXmm(1, i.src2.constant());
stack_offset_src2 = X64Emitter::kStashOffset + 16;
} else {
e.vmovdqa(e.ptr[e.rsp + stack_offset_src2], i.src2);
}
Xbyak::Label looper;
e.xor_(e.edx, e.edx);
e.L(looper);
e.mov(e.ecx, e.dword[e.rsp + stack_offset_src2 + e.rdx]);
e.shr(e.dword[e.rsp + stack_offset_src1 + e.rdx], e.cl);
e.add(e.edx, 4);
e.cmp(e.edx, 16);
e.jnz(looper);
e.vmovdqa(i.dest, e.byte[e.rsp + stack_offset_src1]);
e.L(end);
}
@@ -1388,7 +1482,8 @@ struct VECTOR_SHA_V128
}
static void EmitInt8(X64Emitter& e, const EmitArgType& i) {
// TODO(benvanik): native version (with shift magic).
unsigned stack_offset_src1 = StackLayout::GUEST_SCRATCH;
unsigned stack_offset_src2 = StackLayout::GUEST_SCRATCH + 16;
if (i.src2.is_constant) {
const auto& shamt = i.src2.constant();
bool all_same = true;
@@ -1399,7 +1494,6 @@ struct VECTOR_SHA_V128
}
}
if (e.IsFeatureEnabled(kX64EmitGFNI)) {
if (all_same) {
// Every count is the same, so we can use gf2p8affineqb.
@@ -1412,8 +1506,7 @@ struct VECTOR_SHA_V128
e.StashConstantXmm(0, vec128q(shift_matrix)), 0);
return;
}
}
else if (all_same) {
} else if (all_same) {
Xmm to_be_shifted = GetInputRegOrConstant(e, i.src1, e.xmm1);
e.vpmovsxbw(e.xmm0, to_be_shifted); //_mm_srai_epi16 / psraw
@@ -1425,14 +1518,41 @@ struct VECTOR_SHA_V128
return;
}
e.lea(e.GetNativeParam(1), e.StashConstantXmm(1, i.src2.constant()));
e.StashConstantXmm(1, i.src2.constant());
stack_offset_src2 = X64Emitter::kStashOffset + 16;
} else {
e.lea(e.GetNativeParam(1), e.StashXmm(1, i.src2));
e.vmovdqa(e.ptr[e.rsp + stack_offset_src2], i.src2);
}
e.lea(e.GetNativeParam(0), e.StashXmm(0, i.src1));
e.CallNativeSafe(reinterpret_cast<void*>(EmulateVectorShr<int8_t>));
e.vmovaps(i.dest, e.xmm0);
if (i.src1.is_constant) {
e.StashConstantXmm(0, i.src1.constant());
stack_offset_src1 = X64Emitter::kStashOffset;
} else {
e.vmovdqa(e.ptr[e.rsp + stack_offset_src1], i.src1);
}
Xbyak::Label looper;
e.xor_(e.edx, e.edx);
e.L(looper);
// movzx is to eliminate any possible dep on previous value of rcx at start
// of loop
e.movzx(e.ecx, e.byte[e.rsp + stack_offset_src2 + e.rdx]);
// maybe using a memory operand as the left side isn't the best idea lol,
// still better than callnativesafe though agners docs have no timing info
// on shx [m], cl so shrug
e.sar(e.byte[e.rsp + stack_offset_src1 + e.rdx], e.cl);
if (e.IsFeatureEnabled(kX64FlagsIndependentVars)) {
e.inc(e.edx);
} else {
e.add(e.edx, 1);
}
e.cmp(e.edx, 16);
e.jnz(looper);
e.vmovdqa(i.dest, e.byte[e.rsp + stack_offset_src1]);
}
static void EmitInt16(X64Emitter& e, const EmitArgType& i) {
@@ -1474,14 +1594,38 @@ struct VECTOR_SHA_V128
// TODO(benvanik): native version (with shift magic).
e.L(emu);
if (i.src2.is_constant) {
e.lea(e.GetNativeParam(1), e.StashConstantXmm(1, i.src2.constant()));
unsigned stack_offset_src1 = StackLayout::GUEST_SCRATCH;
unsigned stack_offset_src2 = StackLayout::GUEST_SCRATCH + 16;
if (i.src1.is_constant) {
e.StashConstantXmm(0, i.src1.constant());
stack_offset_src1 = X64Emitter::kStashOffset;
} else {
e.lea(e.GetNativeParam(1), e.StashXmm(1, i.src2));
e.vmovdqa(e.ptr[e.rsp + stack_offset_src1], i.src1);
}
e.lea(e.GetNativeParam(0), e.StashXmm(0, i.src1));
e.CallNativeSafe(reinterpret_cast<void*>(EmulateVectorShr<int16_t>));
e.vmovaps(i.dest, e.xmm0);
if (i.src2.is_constant) {
e.StashConstantXmm(1, i.src2.constant());
stack_offset_src2 = X64Emitter::kStashOffset + 16;
} else {
e.vmovdqa(e.ptr[e.rsp + stack_offset_src2], i.src2);
}
Xbyak::Label looper;
e.xor_(e.edx, e.edx);
e.L(looper);
e.movzx(e.ecx, e.word[e.rsp + stack_offset_src2 + e.rdx]);
e.sar(e.word[e.rsp + stack_offset_src1 + e.rdx], e.cl);
e.add(e.edx, 2);
e.cmp(e.edx, 16);
e.jnz(looper);
e.vmovdqa(i.dest, e.byte[e.rsp + stack_offset_src1]);
e.L(end);
}
@@ -1508,9 +1652,9 @@ struct VECTOR_SHA_V128
// that happens so we mask.
if (i.src2.is_constant) {
e.LoadConstantXmm(e.xmm0, i.src2.constant());
e.vandps(e.xmm0, e.GetXmmConstPtr(XMMShiftMaskPS));
e.vpand(e.xmm0, e.GetXmmConstPtr(XMMShiftMaskPS));
} else {
e.vandps(e.xmm0, i.src2, e.GetXmmConstPtr(XMMShiftMaskPS));
e.vpand(e.xmm0, i.src2, e.GetXmmConstPtr(XMMShiftMaskPS));
}
e.vpsravd(i.dest, i.src1, e.xmm0);
} else {
@@ -1535,14 +1679,36 @@ struct VECTOR_SHA_V128
// TODO(benvanik): native version.
e.L(emu);
if (i.src2.is_constant) {
e.lea(e.GetNativeParam(1), e.StashConstantXmm(1, i.src2.constant()));
unsigned stack_offset_src1 = StackLayout::GUEST_SCRATCH;
unsigned stack_offset_src2 = StackLayout::GUEST_SCRATCH + 16;
if (i.src1.is_constant) {
e.StashConstantXmm(0, i.src1.constant());
stack_offset_src1 = X64Emitter::kStashOffset;
} else {
e.lea(e.GetNativeParam(1), e.StashXmm(1, i.src2));
e.vmovdqa(e.ptr[e.rsp + stack_offset_src1], i.src1);
}
e.lea(e.GetNativeParam(0), e.StashXmm(0, i.src1));
e.CallNativeSafe(reinterpret_cast<void*>(EmulateVectorShr<int32_t>));
e.vmovaps(i.dest, e.xmm0);
if (i.src2.is_constant) {
e.StashConstantXmm(1, i.src2.constant());
stack_offset_src2 = X64Emitter::kStashOffset + 16;
} else {
e.vmovdqa(e.ptr[e.rsp + stack_offset_src2], i.src2);
}
Xbyak::Label looper;
e.xor_(e.edx, e.edx);
e.L(looper);
e.mov(e.ecx, e.dword[e.rsp + stack_offset_src2 + e.rdx]);
e.sar(e.dword[e.rsp + stack_offset_src1 + e.rdx], e.cl);
e.add(e.edx, 4);
e.cmp(e.edx, 16);
e.jnz(looper);
e.vmovdqa(i.dest, e.byte[e.rsp + stack_offset_src1]);
e.L(end);
}
@@ -1550,26 +1716,6 @@ struct VECTOR_SHA_V128
};
EMITTER_OPCODE_TABLE(OPCODE_VECTOR_SHA, VECTOR_SHA_V128);
// ============================================================================
// OPCODE_VECTOR_ROTATE_LEFT
// ============================================================================
template <typename T, std::enable_if_t<std::is_integral<T>::value, int> = 0>
static __m128i EmulateVectorRotateLeft(void*, __m128i src1, __m128i src2) {
alignas(16) T value[16 / sizeof(T)];
alignas(16) T shamt[16 / sizeof(T)];
// Load SSE registers into a C array.
_mm_store_si128(reinterpret_cast<__m128i*>(value), src1);
_mm_store_si128(reinterpret_cast<__m128i*>(shamt), src2);
for (size_t i = 0; i < (16 / sizeof(T)); ++i) {
value[i] = xe::rotate_left<T>(value[i], shamt[i] & ((sizeof(T) * 8) - 1));
}
// Store result and return it.
return _mm_load_si128(reinterpret_cast<__m128i*>(value));
}
struct VECTOR_ROTATE_LEFT_V128
: Sequence<VECTOR_ROTATE_LEFT_V128,
I<OPCODE_VECTOR_ROTATE_LEFT, V128Op, V128Op, V128Op>> {
@@ -1594,33 +1740,72 @@ struct VECTOR_ROTATE_LEFT_V128
}
} else {
unsigned stack_offset_src1 = StackLayout::GUEST_SCRATCH;
unsigned stack_offset_src2 = StackLayout::GUEST_SCRATCH + 16;
switch (i.instr->flags) {
case INT8_TYPE:
// TODO(benvanik): native version (with shift magic).
if (i.src2.is_constant) {
e.lea(e.GetNativeParam(1),
e.StashConstantXmm(1, i.src2.constant()));
case INT8_TYPE: {
if (i.src1.is_constant) {
e.StashConstantXmm(0, i.src1.constant());
stack_offset_src1 = X64Emitter::kStashOffset;
} else {
e.lea(e.GetNativeParam(1), e.StashXmm(1, i.src2));
e.vmovdqa(e.ptr[e.rsp + stack_offset_src1], i.src1);
}
e.lea(e.GetNativeParam(0), e.StashXmm(0, i.src1));
e.CallNativeSafe(
reinterpret_cast<void*>(EmulateVectorRotateLeft<uint8_t>));
e.vmovaps(i.dest, e.xmm0);
break;
case INT16_TYPE:
// TODO(benvanik): native version (with shift magic).
if (i.src2.is_constant) {
e.lea(e.GetNativeParam(1),
e.StashConstantXmm(1, i.src2.constant()));
e.StashConstantXmm(1, i.src2.constant());
stack_offset_src2 = X64Emitter::kStashOffset + 16;
} else {
e.lea(e.GetNativeParam(1), e.StashXmm(1, i.src2));
e.vmovdqa(e.ptr[e.rsp + stack_offset_src2], i.src2);
}
e.lea(e.GetNativeParam(0), e.StashXmm(0, i.src1));
e.CallNativeSafe(
reinterpret_cast<void*>(EmulateVectorRotateLeft<uint16_t>));
e.vmovaps(i.dest, e.xmm0);
break;
Xbyak::Label rotate_iter;
e.xor_(e.edx, e.edx);
e.L(rotate_iter);
e.movzx(e.ecx, e.byte[e.rsp + stack_offset_src2 + e.rdx]);
e.rol(e.byte[e.rsp + stack_offset_src1 + e.rdx], e.cl);
e.add(e.edx, 1);
e.cmp(e.edx, 16);
e.jnz(rotate_iter);
e.vmovdqa(i.dest, e.byte[e.rsp + stack_offset_src1]);
} break;
case INT16_TYPE: {
if (i.src1.is_constant) {
e.StashConstantXmm(0, i.src1.constant());
stack_offset_src1 = X64Emitter::kStashOffset;
} else {
e.vmovdqa(e.ptr[e.rsp + stack_offset_src1], i.src1);
}
if (i.src2.is_constant) {
e.StashConstantXmm(1, i.src2.constant());
stack_offset_src2 = X64Emitter::kStashOffset + 16;
} else {
e.vmovdqa(e.ptr[e.rsp + stack_offset_src2], i.src2);
}
Xbyak::Label rotate_iter;
e.xor_(e.edx, e.edx);
e.L(rotate_iter);
e.movzx(e.ecx, e.word[e.rsp + stack_offset_src2 + e.rdx]);
e.rol(e.word[e.rsp + stack_offset_src1 + e.rdx], e.cl);
e.add(e.edx, 2);
e.cmp(e.edx, 16);
e.jnz(rotate_iter);
e.vmovdqa(i.dest, e.byte[e.rsp + stack_offset_src1]);
} break;
case INT32_TYPE: {
if (e.IsFeatureEnabled(kX64EmitAVX512Ortho)) {
e.vprolvd(i.dest, i.src1, i.src2);
@@ -1638,23 +1823,40 @@ struct VECTOR_ROTATE_LEFT_V128
}
e.vpsllvd(e.xmm1, i.src1, e.xmm0);
// Shift right (to get low bits):
e.vmovaps(temp, e.GetXmmConstPtr(XMMPI32));
e.vmovdqa(temp, e.GetXmmConstPtr(XMMPI32));
e.vpsubd(temp, e.xmm0);
e.vpsrlvd(i.dest, i.src1, temp);
// Merge:
e.vpor(i.dest, e.xmm1);
} else {
// TODO(benvanik): non-AVX2 native version.
if (i.src2.is_constant) {
e.lea(e.GetNativeParam(1),
e.StashConstantXmm(1, i.src2.constant()));
if (i.src1.is_constant) {
e.StashConstantXmm(0, i.src1.constant());
stack_offset_src1 = X64Emitter::kStashOffset;
} else {
e.lea(e.GetNativeParam(1), e.StashXmm(1, i.src2));
e.vmovdqa(e.ptr[e.rsp + stack_offset_src1], i.src1);
}
e.lea(e.GetNativeParam(0), e.StashXmm(0, i.src1));
e.CallNativeSafe(
reinterpret_cast<void*>(EmulateVectorRotateLeft<uint32_t>));
e.vmovaps(i.dest, e.xmm0);
if (i.src2.is_constant) {
e.StashConstantXmm(1, i.src2.constant());
stack_offset_src2 = X64Emitter::kStashOffset + 16;
} else {
e.vmovdqa(e.ptr[e.rsp + stack_offset_src2], i.src2);
}
Xbyak::Label rotate_iter;
e.xor_(e.edx, e.edx);
e.L(rotate_iter);
e.mov(e.ecx, e.dword[e.rsp + stack_offset_src2 + e.rdx]);
e.rol(e.dword[e.rsp + stack_offset_src1 + e.rdx], e.cl);
e.add(e.edx, 4);
e.cmp(e.edx, 16);
e.jnz(rotate_iter);
e.vmovdqa(i.dest, e.byte[e.rsp + stack_offset_src1]);
}
break;
}
@@ -1667,80 +1869,120 @@ struct VECTOR_ROTATE_LEFT_V128
};
EMITTER_OPCODE_TABLE(OPCODE_VECTOR_ROTATE_LEFT, VECTOR_ROTATE_LEFT_V128);
// ============================================================================
// OPCODE_VECTOR_AVERAGE
// ============================================================================
template <typename T, std::enable_if_t<std::is_integral<T>::value, int> = 0>
static __m128i EmulateVectorAverage(void*, __m128i src1, __m128i src2) {
alignas(16) T src1v[16 / sizeof(T)];
alignas(16) T src2v[16 / sizeof(T)];
alignas(16) T value[16 / sizeof(T)];
// Load SSE registers into a C array.
_mm_store_si128(reinterpret_cast<__m128i*>(src1v), src1);
_mm_store_si128(reinterpret_cast<__m128i*>(src2v), src2);
for (size_t i = 0; i < (16 / sizeof(T)); ++i) {
auto t = (uint64_t(src1v[i]) + uint64_t(src2v[i]) + 1) / 2;
value[i] = T(t);
}
// Store result and return it.
return _mm_load_si128(reinterpret_cast<__m128i*>(value));
}
struct VECTOR_AVERAGE
: Sequence<VECTOR_AVERAGE,
I<OPCODE_VECTOR_AVERAGE, V128Op, V128Op, V128Op>> {
static void Emit(X64Emitter& e, const EmitArgType& i) {
auto i_flags = i.instr->flags;
EmitCommutativeBinaryXmmOp(
e, i,
[&i](X64Emitter& e, const Xmm& dest, const Xmm& src1, const Xmm& src2) {
const TypeName part_type =
static_cast<TypeName>(i.instr->flags & 0xFF);
const uint32_t arithmetic_flags = i.instr->flags >> 8;
[i_flags](X64Emitter& e, const Xmm& dest, const Xmm& src1,
const Xmm& src2) {
const TypeName part_type = static_cast<TypeName>(i_flags & 0xFF);
const uint32_t arithmetic_flags = i_flags >> 8;
bool is_unsigned = !!(arithmetic_flags & ARITHMETIC_UNSIGNED);
unsigned stack_offset_src1 = StackLayout::GUEST_SCRATCH;
unsigned stack_offset_src2 = StackLayout::GUEST_SCRATCH + 16;
switch (part_type) {
case INT8_TYPE:
if (is_unsigned) {
e.vpavgb(dest, src1, src2);
} else {
assert_always();
// todo: avx2 version or version that sign extends to two __m128
e.vmovdqa(e.ptr[e.rsp + stack_offset_src1], src1);
e.vmovdqa(e.ptr[e.rsp + stack_offset_src2], src2);
Xbyak::Label looper;
e.xor_(e.edx, e.edx);
e.L(looper);
e.movsx(e.ecx, e.byte[e.rsp + stack_offset_src2 + e.rdx]);
e.movsx(e.eax, e.byte[e.rsp + stack_offset_src1 + e.rdx]);
e.lea(e.ecx, e.ptr[e.ecx + e.eax + 1]);
e.sar(e.ecx, 1);
e.mov(e.byte[e.rsp + stack_offset_src1 + e.rdx], e.cl);
if (e.IsFeatureEnabled(kX64FlagsIndependentVars)) {
e.inc(e.edx);
} else {
e.add(e.edx, 1);
}
e.cmp(e.edx, 16);
e.jnz(looper);
e.vmovdqa(dest, e.ptr[e.rsp + stack_offset_src1]);
}
break;
case INT16_TYPE:
if (is_unsigned) {
e.vpavgw(dest, src1, src2);
} else {
assert_always();
e.vmovdqa(e.ptr[e.rsp + stack_offset_src1], src1);
e.vmovdqa(e.ptr[e.rsp + stack_offset_src2], src2);
Xbyak::Label looper;
e.xor_(e.edx, e.edx);
e.L(looper);
e.movsx(e.ecx, e.word[e.rsp + stack_offset_src2 + e.rdx]);
e.movsx(e.eax, e.word[e.rsp + stack_offset_src1 + e.rdx]);
e.lea(e.ecx, e.ptr[e.ecx + e.eax + 1]);
e.sar(e.ecx, 1);
e.mov(e.word[e.rsp + stack_offset_src1 + e.rdx], e.cx);
e.add(e.edx, 2);
e.cmp(e.edx, 16);
e.jnz(looper);
e.vmovdqa(dest, e.ptr[e.rsp + stack_offset_src1]);
}
break;
case INT32_TYPE:
case INT32_TYPE: {
// No 32bit averages in AVX.
e.vmovdqa(e.ptr[e.rsp + stack_offset_src1], src1);
e.vmovdqa(e.ptr[e.rsp + stack_offset_src2], src2);
Xbyak::Label looper;
e.xor_(e.edx, e.edx);
e.L(looper);
auto src2_current_ptr =
e.dword[e.rsp + stack_offset_src2 + e.rdx];
auto src1_current_ptr =
e.dword[e.rsp + stack_offset_src1 + e.rdx];
if (is_unsigned) {
if (i.src2.is_constant) {
e.lea(e.GetNativeParam(1),
e.StashConstantXmm(1, i.src2.constant()));
} else {
e.lea(e.GetNativeParam(1), e.StashXmm(1, i.src2));
}
e.lea(e.GetNativeParam(0), e.StashXmm(0, i.src1));
e.CallNativeSafe(
reinterpret_cast<void*>(EmulateVectorAverage<uint32_t>));
e.vmovaps(i.dest, e.xmm0);
// implicit zero-ext
e.mov(e.ecx, src2_current_ptr);
e.mov(e.eax, src1_current_ptr);
} else {
if (i.src2.is_constant) {
e.lea(e.GetNativeParam(1),
e.StashConstantXmm(1, i.src2.constant()));
} else {
e.lea(e.GetNativeParam(1), e.StashXmm(1, i.src2));
}
e.lea(e.GetNativeParam(0), e.StashXmm(0, i.src1));
e.CallNativeSafe(
reinterpret_cast<void*>(EmulateVectorAverage<int32_t>));
e.vmovaps(i.dest, e.xmm0);
e.movsxd(e.rcx, src2_current_ptr);
e.movsxd(e.rax, src1_current_ptr);
}
break;
e.lea(e.rcx, e.ptr[e.rcx + e.rax + 1]);
if (is_unsigned) {
e.shr(e.rcx, 1);
} else {
e.sar(e.rcx, 1);
}
e.mov(e.dword[e.rsp + stack_offset_src1 + e.rdx], e.ecx);
e.add(e.edx, 4);
e.cmp(e.edx, 16);
e.jnz(looper);
e.vmovdqa(dest, e.ptr[e.rsp + stack_offset_src1]);
} break;
default:
assert_unhandled_case(part_type);
break;

98
src/xenia/cpu/backend/x64/x64_sequences.cc
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