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Merged
tannergooding merged 27 commits into from
Mar 3, 2025
Merged

Tensor primitives divide int32 #111505

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dfa44fa
Add vectorized path for Int32 type in TensorPrimitives.Divide
Jan 16, 2025
37afdd2
Add ISA guards and Debug.Assert
Jan 16, 2025
0cc3b79
Simplify vectorizable check, simplify preprocessor guard
Jan 16, 2025
b8965ae
Use XPlat intrinsics, use x86 intrinsics just for conversion
Jan 21, 2025
d5ebf81
Get Vector128<int> operator/ working
Jan 31, 2025
ef596d9
Working for Vector256<int> operator/
Jan 31, 2025
1da230f
Works for operator/ where op2 is scalar int
Jan 31, 2025
c8b913e
Consolidate to one path
Jan 31, 2025
6ac02b3
Move logic from importer to gentree
Feb 7, 2025
2bc816b
Add support to vectorize Vector512<int> operator /
Feb 7, 2025
77842e4
Working GenTreeSIMDDivByZeroCheck node
Feb 11, 2025
16a5178
Make GenTreeSIMDDivByZeroCheck a unary op
Feb 11, 2025
1ca404f
Remove empty lower functions, remove leftover gtGetOp2
Feb 11, 2025
d9b18a0
JIT formatting
Feb 11, 2025
34329ad
Only use low SIMD registers for ptest
Feb 11, 2025
65d2f8c
Merge branch 'main' into tensor-primitives-divide-int32
alexcovington Feb 12, 2025
839baa9
Merge branch 'main' into tensor-primitives-divide-int32
alexcovington Feb 17, 2025
c6e18e6
Use gtNewSimdCmpOpAnyNode for div-by-zero check
Feb 18, 2025
078aff6
Add spill for op1
Feb 18, 2025
f994b09
Jit formatting
Feb 18, 2025
6767384
Rework to use NI_Vector*_op_Division
Feb 20, 2025
e61e97f
Remove GT_SIMD_DIV_BY_ZERO_CHECK and related class/functions
Feb 20, 2025
08e0d7c
Re-use tmp reg for converts
Feb 21, 2025
66580e1
Comments, jit formatting
Feb 21, 2025
3feb91b
Remove leftover SIMDDivByZero
Feb 21, 2025
1807a4c
Don't flag with GTF_OVERFLOW since it conflicts with GTF_HW_EM_OP
Feb 21, 2025
4929106
Use correct INT_MIN / -1, simplify vec const generation, add assert t…
Feb 24, 2025
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6 changes: 6 additions & 0 deletions src/coreclr/jit/fgdiagnostic.cpp
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Expand Up @@ -3432,6 +3432,12 @@ void Compiler::fgDebugCheckFlags(GenTree* tree, BasicBlock* block)
expectedFlags |= GTF_GLOB_REF;
break;
}

case NI_Vector128_op_Division:
case NI_Vector256_op_Division:
{
break;
}
#endif // TARGET_XARCH

#if defined(TARGET_ARM64)
Expand Down
72 changes: 57 additions & 15 deletions src/coreclr/jit/gentree.cpp
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Expand Up @@ -7269,6 +7269,14 @@ bool GenTree::OperMayThrow(Compiler* comp)
{
return true;
}

#ifdef TARGET_XARCH
NamedIntrinsic intrinsicId = this->AsHWIntrinsic()->GetHWIntrinsicId();
if (intrinsicId == NI_Vector128_op_Division || intrinsicId == NI_Vector256_op_Division)
{
return true;
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@tannergooding tannergooding Feb 24, 2025

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This should probably assert that we're only encountering it for varTypeIsInteger(AsHWIntrinsic()->GetSimdBaseType()), just to avoid issues from potential future refactorings.

I'd expect we want to go ahead and include Vector512_op_Division here as well, even if it can't be encountered quite yet.

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@alexcovington alexcovington Feb 24, 2025

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Thanks, I've added the assert and included Vector512_op_Division.

}
#endif // TARGET_XARCH
}
#endif // FEATURE_HW_INTRINSICS

Expand Down Expand Up @@ -21234,6 +21242,26 @@ GenTree* Compiler::gtNewSimdBinOpNode(
}
}
#endif // TARGET_XARCH
#if defined(TARGET_XARCH) && defined(FEATURE_HW_INTRINSICS)
case GT_DIV:
{
if (simdBaseType == TYP_INT)
{
assert(compOpportunisticallyDependsOn(InstructionSet_AVX) ||
compOpportunisticallyDependsOn(InstructionSet_AVX512F));

assert(simdSize == 16 || simdSize == 32);

NamedIntrinsic divIntrinsic = simdSize == 16 ? NI_Vector128_op_Division : NI_Vector256_op_Division;
unsigned int divideOpSimdSize = simdSize * 2;

GenTree* divOp =
gtNewSimdHWIntrinsicNode(op1->TypeGet(), op1, op2, divIntrinsic, simdBaseJitType, divideOpSimdSize);
return divOp;
}
unreached();
}
#endif // defined(TARGET_XARCH) && defined(FEATURE_HW_INTRINSICS)

case GT_MUL:
{
Expand Down Expand Up @@ -28156,6 +28184,13 @@ void GenTreeHWIntrinsic::Initialize(NamedIntrinsic intrinsicId)
gtFlags |= (GTF_CALL | GTF_GLOB_REF);
break;
}

case NI_Vector128_op_Division:
case NI_Vector256_op_Division:
{
gtFlags |= GTF_EXCEPT;
break;
}
#endif // TARGET_XARCH

#if defined(TARGET_ARM64)
Expand Down Expand Up @@ -29073,26 +29108,33 @@ NamedIntrinsic GenTreeHWIntrinsic::GetHWIntrinsicIdForBinOp(Compiler* comp,

case GT_DIV:
{
#if defined(TARGET_XARCH)
assert(varTypeIsFloating(simdBaseType) || varTypeIsInt(simdBaseType));
#else
assert(varTypeIsFloating(simdBaseType));
#endif
assert(op2->TypeIs(simdType));

#if defined(TARGET_XARCH)
if (simdSize == 64)
{
id = NI_AVX512F_Divide;
}
else if (simdSize == 32)
{
id = NI_AVX_Divide;
}
else if (simdBaseType == TYP_FLOAT)
{
id = isScalar ? NI_SSE_DivideScalar : NI_SSE_Divide;
}
else
if (varTypeIsFloating(simdBaseType))
{
assert(comp->compIsaSupportedDebugOnly(InstructionSet_SSE2));
id = isScalar ? NI_SSE2_DivideScalar : NI_SSE2_Divide;
if (simdSize == 64)
{
id = NI_AVX512F_Divide;
}
else if (simdSize == 32)
{
id = NI_AVX_Divide;
}
else if (simdBaseType == TYP_FLOAT)
{
id = isScalar ? NI_SSE_DivideScalar : NI_SSE_Divide;
}
else
{
assert(comp->compIsaSupportedDebugOnly(InstructionSet_SSE2));
id = isScalar ? NI_SSE2_DivideScalar : NI_SSE2_Divide;
}
}
#elif defined(TARGET_ARM64)
if ((simdSize == 8) && (isScalar || (simdBaseType == TYP_DOUBLE)))
Expand Down
101 changes: 101 additions & 0 deletions src/coreclr/jit/hwintrinsiccodegenxarch.cpp
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Expand Up @@ -1871,6 +1871,107 @@ void CodeGen::genBaseIntrinsic(GenTreeHWIntrinsic* node, insOpts instOptions)
break;
}

case NI_Vector128_op_Division:
case NI_Vector256_op_Division:
{
// We can emulate SIMD integer division by converting the 32-bit integer -> 64-bit double,
// perform a 64-bit double divide, then convert back to a 32-bit integer. This is generating
// something similar to the following managed code:
// if (Vector128.EqualsAny(op2, Vector128<int>.Zero))
// {
// throw new DivideByZeroException();
// }
//
// Vector128<int> overflowMask =
// Vector128.Equals(op1, Vector128.Create(int.MaxValue)
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@tannergooding tannergooding Feb 24, 2025

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this should be MinValue, not MaxValue.

it's MinValue / -1 that overflows, since that produces 2147483648, which isn't representable.

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@alexcovington alexcovington Feb 24, 2025

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Thanks, fixed.

// & Vector128.Equals(op2, Vector128.Create(-1));
// if (!Vector128.EqualsAll(overflowMask, Vector128<int>.Zero))
// {
// throw new OverflowException();
// }
//
// Vector256<double> op1_f64 =
// Vector256.ConvertToDouble(Vector256.WidenLower(Vector128.ToVector256Unsafe(op1))));
// Vector256<double> op2_f64 =
// Vector256.ConvertToDouble(Vector256.WidenLower(Vector128.ToVector256Unsafe(op2))));
// Vector256<double> div_f64 = op1_f64 / op2_f64;
// Vector256<long> div_i64 = Vector256.ConvertToInt64(div_f64);
// Vector128<int> div_i32 = Vector256.Narrow(div_i64.GetLower(), div_i64.GetUpper());
// return div_i32;
regNumber op2Reg = op2->GetRegNum();
regNumber tmpReg1 = internalRegisters.Extract(node, RBM_ALLFLOAT);
regNumber tmpReg2 = internalRegisters.Extract(node, RBM_ALLFLOAT);
emitAttr typeSize = emitTypeSize(node->TypeGet());
noway_assert(typeSize == EA_16BYTE || typeSize == EA_32BYTE);
emitAttr divTypeSize = typeSize == EA_16BYTE ? EA_32BYTE : EA_64BYTE;

CORINFO_FIELD_HANDLE maxValueFld;
CORINFO_FIELD_HANDLE negOneFld;

if (typeSize == EA_16BYTE)
{
simd16_t maxValueIntVec;
maxValueIntVec.i32[0] = INT_MAX;
maxValueIntVec.i32[1] = INT_MAX;
maxValueIntVec.i32[2] = INT_MAX;
maxValueIntVec.i32[3] = INT_MAX;

simd16_t negOneIntVec;
negOneIntVec.i32[0] = -1;
negOneIntVec.i32[1] = -1;
negOneIntVec.i32[2] = -1;
negOneIntVec.i32[3] = -1;

maxValueFld = emit->emitSimd16Const(maxValueIntVec);
negOneFld = emit->emitSimd16Const(negOneIntVec);
}
else
{
noway_assert(typeSize == EA_32BYTE);
simd32_t maxValueIntVec;
maxValueIntVec.i32[0] = INT_MAX;
maxValueIntVec.i32[1] = INT_MAX;
maxValueIntVec.i32[2] = INT_MAX;
maxValueIntVec.i32[3] = INT_MAX;
maxValueIntVec.i32[4] = INT_MAX;
maxValueIntVec.i32[5] = INT_MAX;
maxValueIntVec.i32[6] = INT_MAX;
maxValueIntVec.i32[7] = INT_MAX;

simd32_t negOneIntVec;
negOneIntVec.i32[0] = -1;
negOneIntVec.i32[1] = -1;
negOneIntVec.i32[2] = -1;
negOneIntVec.i32[3] = -1;
negOneIntVec.i32[4] = -1;
negOneIntVec.i32[5] = -1;
negOneIntVec.i32[6] = -1;
negOneIntVec.i32[7] = -1;

maxValueFld = emit->emitSimd32Const(maxValueIntVec);
negOneFld = emit->emitSimd32Const(negOneIntVec);
}
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@tannergooding tannergooding Feb 24, 2025 •
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This could be simplified to a simd_t vecCns = {}; and then a for loop for elementCount iterations (given elementCount = simdSize / 4).

Then doing emitSimd16/32Cons based on the simdSize (and accessing v128[0] or v256[0])

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It might, alternatively, be cheaper to just check if the result of divpd is 2147483648. That gives us a single comparison instead and is the only case that will be out of range for int.

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@EgorBo EgorBo Feb 24, 2025

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isn't negOneIntVec can be just simd32_t::AllBitsSet ?

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@tannergooding tannergooding Feb 24, 2025

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Yes, that as well.


// div-by-zero check
emit->emitIns_SIMD_R_R_R(INS_xorpd, typeSize, tmpReg1, tmpReg1, tmpReg1, instOptions);
emit->emitIns_SIMD_R_R_R(INS_pcmpeqd, typeSize, tmpReg1, tmpReg1, op2Reg, instOptions);
emit->emitIns_R_R(INS_ptest, typeSize, tmpReg1, tmpReg1, instOptions);
genJumpToThrowHlpBlk(EJ_jne, SCK_DIV_BY_ZERO);

// overflow check
emit->emitIns_SIMD_R_R_C(INS_pcmpeqd, typeSize, tmpReg1, op1Reg, maxValueFld, 0, instOptions);
emit->emitIns_SIMD_R_R_C(INS_pcmpeqd, typeSize, tmpReg2, op2Reg, negOneFld, 0, instOptions);
emit->emitIns_SIMD_R_R_R(INS_pand, typeSize, tmpReg1, tmpReg1, tmpReg2, instOptions);
emit->emitIns_R_R(INS_ptest, typeSize, tmpReg1, tmpReg1, instOptions);
genJumpToThrowHlpBlk(EJ_jne, SCK_OVERFLOW);

emit->emitIns_R_R(INS_cvtdq2pd, divTypeSize, tmpReg1, op1Reg, instOptions);
emit->emitIns_R_R(INS_cvtdq2pd, divTypeSize, tmpReg2, op2Reg, instOptions);
emit->emitIns_SIMD_R_R_R(INS_divpd, divTypeSize, targetReg, tmpReg1, tmpReg2, instOptions);
emit->emitIns_R_R(INS_cvttpd2dq, divTypeSize, targetReg, targetReg, instOptions);
break;
}

default:
{
unreached();
Expand Down
4 changes: 2 additions & 2 deletions src/coreclr/jit/hwintrinsiclistxarch.h
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Expand Up @@ -129,7 +129,7 @@ HARDWARE_INTRINSIC(Vector128, get_Zero,
HARDWARE_INTRINSIC(Vector128, op_Addition, 16, 2, {INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid}, HW_Category_Helper, HW_Flag_InvalidNodeId)
HARDWARE_INTRINSIC(Vector128, op_BitwiseAnd, 16, 2, {INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid}, HW_Category_Helper, HW_Flag_InvalidNodeId)
HARDWARE_INTRINSIC(Vector128, op_BitwiseOr, 16, 2, {INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid}, HW_Category_Helper, HW_Flag_InvalidNodeId)
HARDWARE_INTRINSIC(Vector128, op_Division, 16, 2, {INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid}, HW_Category_Helper, HW_Flag_InvalidNodeId)
HARDWARE_INTRINSIC(Vector128, op_Division, 16, 2, {INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid}, HW_Category_Helper, HW_Flag_SpecialSideEffect_Other|HW_Flag_SpecialImport)
HARDWARE_INTRINSIC(Vector128, op_Equality, 16, 2, {INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid}, HW_Category_Helper, HW_Flag_SpecialImport|HW_Flag_NoCodeGen|HW_Flag_Commutative|HW_Flag_CanBenefitFromConstantProp)
HARDWARE_INTRINSIC(Vector128, op_ExclusiveOr, 16, 2, {INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid}, HW_Category_Helper, HW_Flag_InvalidNodeId)
HARDWARE_INTRINSIC(Vector128, op_Inequality, 16, 2, {INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid}, HW_Category_Helper, HW_Flag_SpecialImport|HW_Flag_NoCodeGen|HW_Flag_Commutative|HW_Flag_CanBenefitFromConstantProp)
Expand Down Expand Up @@ -249,7 +249,7 @@ HARDWARE_INTRINSIC(Vector256, get_Zero,
HARDWARE_INTRINSIC(Vector256, op_Addition, 32, 2, {INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid}, HW_Category_Helper, HW_Flag_InvalidNodeId)
HARDWARE_INTRINSIC(Vector256, op_BitwiseAnd, 32, 2, {INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid}, HW_Category_Helper, HW_Flag_InvalidNodeId|HW_Flag_AvxOnlyCompatible)
HARDWARE_INTRINSIC(Vector256, op_BitwiseOr, 32, 2, {INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid}, HW_Category_Helper, HW_Flag_InvalidNodeId|HW_Flag_AvxOnlyCompatible)
HARDWARE_INTRINSIC(Vector256, op_Division, 32, 2, {INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid}, HW_Category_Helper, HW_Flag_InvalidNodeId)
HARDWARE_INTRINSIC(Vector256, op_Division, 32, 2, {INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid}, HW_Category_Helper, HW_Flag_SpecialSideEffect_Other|HW_Flag_SpecialImport)
HARDWARE_INTRINSIC(Vector256, op_Equality, 32, 2, {INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid}, HW_Category_Helper, HW_Flag_SpecialImport|HW_Flag_NoCodeGen|HW_Flag_Commutative|HW_Flag_CanBenefitFromConstantProp)
HARDWARE_INTRINSIC(Vector256, op_ExclusiveOr, 32, 2, {INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid}, HW_Category_Helper, HW_Flag_InvalidNodeId|HW_Flag_AvxOnlyCompatible)
HARDWARE_INTRINSIC(Vector256, op_Inequality, 32, 2, {INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid, INS_invalid}, HW_Category_Helper, HW_Flag_SpecialImport|HW_Flag_NoCodeGen|HW_Flag_Commutative|HW_Flag_CanBenefitFromConstantProp)
Expand Down
14 changes: 13 additions & 1 deletion src/coreclr/jit/hwintrinsicxarch.cpp
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Expand Up @@ -2417,8 +2417,19 @@ GenTree* Compiler::impSpecialIntrinsic(NamedIntrinsic intrinsic,

if (!varTypeIsFloating(simdBaseType))
{
// We can't trivially handle division for integral types using SIMD
#if defined(TARGET_XARCH) && defined(FEATURE_HW_INTRINSICS)
// Check to see if it is possible to emulate the integer division
if (!(simdBaseType == TYP_INT &&
((simdSize == 16 && compOpportunisticallyDependsOn(InstructionSet_AVX)) ||
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(simdSize == 32 && compOpportunisticallyDependsOn(InstructionSet_AVX512F)))))
{
break;
}
impSpillSideEffect(true, stackState.esStackDepth -
2 DEBUGARG("Spilling op1 side effects for vector integer division"));
#else
break;
#endif // defined(TARGET_XARCH) && defined(FEATURE_HW_INTRINSICS)
}

CORINFO_ARG_LIST_HANDLE arg1 = sig->args;
Expand All @@ -2433,6 +2444,7 @@ GenTree* Compiler::impSpecialIntrinsic(NamedIntrinsic intrinsic,
op1 = getArgForHWIntrinsic(argType, argClass);

retNode = gtNewSimdBinOpNode(GT_DIV, retType, op1, op2, simdBaseJitType, simdSize);
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break;
}

Expand Down
6 changes: 6 additions & 0 deletions src/coreclr/jit/lowerxarch.cpp
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Expand Up @@ -10422,6 +10422,12 @@ void Lowering::ContainCheckHWIntrinsic(GenTreeHWIntrinsic* node)
break;
}

case NI_Vector128_op_Division:
case NI_Vector256_op_Division:
{
break;
}

default:
{
assert(!"Unhandled containment for helper binary hardware intrinsic");
Expand Down
17 changes: 17 additions & 0 deletions src/coreclr/jit/lsraxarch.cpp
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Expand Up @@ -2786,6 +2786,23 @@ int LinearScan::BuildHWIntrinsic(GenTreeHWIntrinsic* intrinsicTree, int* pDstCou
break;
}

case NI_Vector128_op_Division:
case NI_Vector256_op_Division:
{
srcCount = BuildOperandUses(op1, lowSIMDRegs());
srcCount += BuildOperandUses(op2, lowSIMDRegs());

// get a tmp register for div-by-zero check
buildInternalFloatRegisterDefForNode(intrinsicTree, lowSIMDRegs());

// get a tmp register for overflow check
buildInternalFloatRegisterDefForNode(intrinsicTree, lowSIMDRegs());
setInternalRegsDelayFree = true;

buildUses = false;
break;
}

default:
{
assert((intrinsicId > NI_HW_INTRINSIC_START) && (intrinsicId < NI_HW_INTRINSIC_END));
Expand Down
8 changes: 8 additions & 0 deletions src/coreclr/jit/morph.cpp
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Expand Up @@ -11383,6 +11383,14 @@ GenTree* Compiler::fgMorphHWIntrinsic(GenTreeHWIntrinsic* tree)
tree->AddAllEffectsFlags(operand);
}

#ifdef TARGET_XARCH
if (intrinsicId == NI_Vector128_op_Division || intrinsicId == NI_Vector256_op_Division)
{
fgAddCodeRef(compCurBB, SCK_DIV_BY_ZERO);
fgAddCodeRef(compCurBB, SCK_OVERFLOW);
}
#endif // TARGET_XARCH

if (opts.OptimizationEnabled())
{
var_types retType = tree->TypeGet();
Expand Down
14 changes: 14 additions & 0 deletions src/coreclr/jit/stacklevelsetter.cpp
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Expand Up @@ -206,6 +206,20 @@ void StackLevelSetter::SetThrowHelperBlocks(GenTree* node, BasicBlock* block)
}
break;

#if defined(FEATURE_HW_INTRINSICS) && defined(TARGET_XARCH)
case GT_HWINTRINSIC:
{

NamedIntrinsic intrinsicId = node->AsHWIntrinsic()->GetHWIntrinsicId();
if (intrinsicId == NI_Vector128_op_Division || intrinsicId == NI_Vector256_op_Division)
{
SetThrowHelperBlock(SCK_DIV_BY_ZERO, block);
SetThrowHelperBlock(SCK_OVERFLOW, block);
}
}
break;
#endif // defined(FEATURE_HW_INTRINSICS) && defined(TARGET_XARCH)

case GT_INDEX_ADDR:
case GT_ARR_ELEM:
SetThrowHelperBlock(SCK_RNGCHK_FAIL, block);
Expand Down
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