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Align SPV_INTEL_joint_matrix implementation to the spec #3468

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af08526
Align SPV_INTEL_joint_matrix implementation to the spec
vmaksimo Dec 4, 2025
6d0cfae
refactor
vmaksimo Dec 8, 2025
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2 changes: 2 additions & 0 deletions lib/SPIRV/libSPIRV/SPIRVEnum.h
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Original file line number Diff line number Diff line change
Expand Up @@ -211,6 +211,8 @@ template <> inline void SPIRVMap<SPIRVCapabilityKind, SPIRVCapVec>::init() {
{CapabilityCooperativeMatrixKHR});
ADD_VEC_INIT(internal::CapabilityCooperativeMatrixBFloat16ComponentTypeINTEL,
{CapabilityCooperativeMatrixKHR});
ADD_VEC_INIT(internal::CapabilityPackedCooperativeMatrixINTEL,
{CapabilityCooperativeMatrixKHR});
ADD_VEC_INIT(internal::CapabilityCooperativeMatrixPrefetchINTEL,
{CapabilityCooperativeMatrixKHR});
ADD_VEC_INIT(internal::CapabilityCooperativeMatrixInvocationInstructionsINTEL,
Expand Down
90 changes: 66 additions & 24 deletions lib/SPIRV/libSPIRV/SPIRVInstruction.h
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Expand Up @@ -3691,27 +3691,6 @@ _SPIRV_OP(ConvertFToBF16INTEL)
_SPIRV_OP(ConvertBF16ToFINTEL)
#undef _SPIRV_OP

class SPIRVJointMatrixINTELInstBase : public SPIRVInstTemplateBase {
protected:
std::optional<ExtensionID> getRequiredExtension() const override {
return ExtensionID::SPV_INTEL_joint_matrix;
}
};

class SPIRVJointMatrixINTELWorkItemInst : public SPIRVJointMatrixINTELInstBase {
protected:
SPIRVCapVec getRequiredCapability() const override {
return getVec(internal::CapabilityJointMatrixWIInstructionsINTEL);
}
};

#define _SPIRV_OP(x, ...) \
typedef SPIRVInstTemplate<SPIRVJointMatrixINTELWorkItemInst, \
internal::Op##x##INTEL, __VA_ARGS__> \
SPIRV##x##INTEL;
_SPIRV_OP(JointMatrixGetElementCoord, true, 5)
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@MrSidims MrSidims Dec 8, 2025

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To double check, what instruction is used in SYCL headers right now?

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@vmaksimo vmaksimo Dec 8, 2025 •
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Oopsie: https://github.com/intel/llvm/blob/bece203068c9e6469d22da410df88b9f8e56e727/sycl/include/sycl/__spirv/spirv_ops.hpp#L110-L116

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Okay, then I'd suggest to first replace the joint matrix version to cooperative matrix version in the headers and see if anything fails.

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@vmaksimo vmaksimo Dec 8, 2025

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Created a draft PR: intel/llvm#20855

#undef _SPIRV_OP

class SPIRVCooperativeMatrixPrefetchINTELInstBase
: public SPIRVInstTemplateBase {
protected:
Expand All @@ -3737,8 +3716,28 @@ class SPIRVCooperativeMatrixCheckedInstructionsINTELInstBase
return ExtensionID::SPV_INTEL_joint_matrix;
}
SPIRVCapVec getRequiredCapability() const override {
return getVec(
internal::CapabilityCooperativeMatrixCheckedInstructionsINTEL);
auto CV =
getVec(internal::CapabilityCooperativeMatrixCheckedInstructionsINTEL);
if (SPIRVValue *LayoutVal = getMemoryLayout()) {
if (isConstantOpCode(LayoutVal->getOpCode())) {
uint64_t Layout =
static_cast<SPIRVConstant *>(LayoutVal)->getZExtIntValue();
if (Layout == internal::CooperativeMatrixLayoutPackedINTEL)
CV.push_back(internal::CapabilityPackedCooperativeMatrixINTEL);
}
}
return CV;
}
SPIRVValue *getMemoryLayout() const {
if (OpCode == internal::OpCooperativeMatrixLoadCheckedINTEL)
return const_cast<
SPIRVCooperativeMatrixCheckedInstructionsINTELInstBase *>(this)
->getOperand(3);
if (OpCode == internal::OpCooperativeMatrixStoreCheckedINTEL)
return const_cast<
SPIRVCooperativeMatrixCheckedInstructionsINTELInstBase *>(this)
->getOperand(4);
return nullptr;
}
};

Expand Down Expand Up @@ -3790,6 +3789,7 @@ class SPIRVCooperativeMatrixInvocationInstructionsINTELInstBase
internal::Op##x##INTEL, __VA_ARGS__> \
SPIRV##x##INTEL;
_SPIRV_OP(CooperativeMatrixApplyFunction, true, 5)
_SPIRV_OP(CooperativeMatrixGetElementCoord, true, 5)
#undef _SPIRV_OP

class SPIRVCooperativeMatrixKHRInstBase : public SPIRVInstTemplateBase {
Expand All @@ -3798,7 +3798,49 @@ class SPIRVCooperativeMatrixKHRInstBase : public SPIRVInstTemplateBase {
return ExtensionID::SPV_KHR_cooperative_matrix;
}
SPIRVCapVec getRequiredCapability() const override {
return getVec(CapabilityCooperativeMatrixKHR);
auto CV = getVec(CapabilityCooperativeMatrixKHR);
if (SPIRVValue *LayoutVal = getMemoryLayout()) {
if (isConstantOpCode(LayoutVal->getOpCode())) {
uint64_t Layout =
static_cast<SPIRVConstant *>(LayoutVal)->getZExtIntValue();
if (Layout == internal::CooperativeMatrixLayoutPackedINTEL)
CV.push_back(internal::CapabilityPackedCooperativeMatrixINTEL);
}
}
if (OpCode == OpCooperativeMatrixMulAddKHR && Ops.size() == 4) {
// If Cooperative Matrix Operand literal is present, check for the
// additional capabilities it may require.
uint64_t CoopOperands = Ops[3];
if (CoopOperands &
internal::
CooperativeMatrixOperandsMatrixAAndBTF32ComponentsINTELMask) {
CV.push_back(
internal::CapabilityCooperativeMatrixTF32ComponentTypeINTEL);
Module->addExtension(ExtensionID::SPV_INTEL_joint_matrix);
}
if (CoopOperands &
(internal::
CooperativeMatrixOperandsMatrixAAndBBFloat16ComponentsINTELMask |
internal::
CooperativeMatrixOperandsMatrixCBFloat16ComponentsINTELMask |
internal::
CooperativeMatrixOperandsMatrixResultBFloat16ComponentsINTELMask)) {
CV.push_back(
internal::CapabilityCooperativeMatrixBFloat16ComponentTypeINTEL);
Module->addExtension(ExtensionID::SPV_INTEL_joint_matrix);
}
}
return CV;
}

SPIRVValue *getMemoryLayout() const {
if (OpCode == OpCooperativeMatrixLoadKHR)
return const_cast<SPIRVCooperativeMatrixKHRInstBase *>(this)->getOperand(
1);
if (OpCode == OpCooperativeMatrixStoreKHR)
return const_cast<SPIRVCooperativeMatrixKHRInstBase *>(this)->getOperand(
2);
return nullptr;
}
};

Expand Down
2 changes: 2 additions & 0 deletions lib/SPIRV/libSPIRV/SPIRVNameMapEnum.h
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Expand Up @@ -669,6 +669,8 @@ template <> inline void SPIRVMap<Capability, std::string>::init() {
"CooperativeMatrixTF32ComponentTypeINTEL");
add(internal::CapabilityCooperativeMatrixBFloat16ComponentTypeINTEL,
"CooperativeMatrixBFloat16ComponentTypeINTEL");
add(internal::CapabilityPackedCooperativeMatrixINTEL,
"PackedCooperativeMatrixINTEL");
add(internal::CapabilityCooperativeMatrixPrefetchINTEL,
"CooperativeMatrixPrefetchINTEL");
add(internal::CapabilityCooperativeMatrixInvocationInstructionsINTEL,
Expand Down
4 changes: 2 additions & 2 deletions lib/SPIRV/libSPIRV/SPIRVOpCodeEnumInternal.h
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Expand Up @@ -2,8 +2,8 @@

_SPIRV_OP_INTERNAL(Forward, internal::OpForward)
_SPIRV_OP_INTERNAL(TypeTokenINTEL, internal::OpTypeTokenINTEL)
_SPIRV_OP_INTERNAL(JointMatrixGetElementCoordINTEL,
internal::OpJointMatrixGetElementCoordINTEL)
_SPIRV_OP_INTERNAL(CooperativeMatrixGetElementCoordINTEL,
internal::OpCooperativeMatrixGetElementCoordINTEL)
_SPIRV_OP_INTERNAL(CooperativeMatrixPrefetchINTEL,
internal::OpCooperativeMatrixPrefetchINTEL)
_SPIRV_OP_INTERNAL(CooperativeMatrixLoadCheckedINTEL,
Expand Down
21 changes: 14 additions & 7 deletions lib/SPIRV/libSPIRV/spirv_internal.hpp
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Expand Up @@ -78,7 +78,7 @@ enum InternalOp {
IOpClampConvertFToSINTEL = 6424,
IOpMaskedGatherINTEL = 6428,
IOpMaskedScatterINTEL = 6429,
IOpJointMatrixGetElementCoordINTEL = 6440,
IOpCooperativeMatrixGetElementCoordINTEL = 6440,
IOpCooperativeMatrixApplyFunctionINTEL = 6448,
IOpCooperativeMatrixPrefetchINTEL = 6449,
IOpConvertHandleToImageINTEL = 6529,
Expand Down Expand Up @@ -118,6 +118,7 @@ enum InternalCapability {
ICapabilityAtomicBFloat16LoadStoreINTEL = 6262,
ICapabilityCooperativeMatrixPrefetchINTEL = 6411,
ICapabilityMaskedGatherScatterINTEL = 6427,
ICapabilityPackedCooperativeMatrixINTEL = 6434,
ICapabilityJointMatrixWIInstructionsINTEL = 6435,
ICapabilityCooperativeMatrixInvocationInstructionsINTEL = 6435,
ICapabilityCooperativeMatrixTF32ComponentTypeINTEL = 6436,
Expand All @@ -133,11 +134,16 @@ enum InternalExecutionMode {
constexpr LinkageType LinkageTypeInternal =
static_cast<LinkageType>(ILTInternal);

enum InternalJointMatrixLayout {
RowMajor = 0,
ColumnMajor = 1,
PackedA = 2,
PackedB = 3
// Cooperative Matrix Layout for SPV_INTEL_joint_matrix extension.
enum InternalCooperativeMatrixLayout { CooperativeMatrixLayoutPackedINTEL = 2 };

// Cooperative Matrix Operands for SPV_INTEL_joint_matrix extension
// These are bit flags for component type interpretation.
enum InternalCooperativeMatrixOperandsMask {
CooperativeMatrixOperandsMatrixAAndBTF32ComponentsINTELMask = 0x20,
CooperativeMatrixOperandsMatrixAAndBBFloat16ComponentsINTELMask = 0x40,
CooperativeMatrixOperandsMatrixCBFloat16ComponentsINTELMask = 0x80,
CooperativeMatrixOperandsMatrixResultBFloat16ComponentsINTELMask = 0x100
};

enum InternalFPEncoding {
Expand All @@ -154,7 +160,8 @@ enum InternalBuiltIn {
_SPIRV_OP(Capability, JointMatrixWIInstructionsINTEL)
_SPIRV_OP(Capability, CooperativeMatrixTF32ComponentTypeINTEL)
_SPIRV_OP(Capability, CooperativeMatrixBFloat16ComponentTypeINTEL)
_SPIRV_OP(Op, JointMatrixGetElementCoordINTEL)
_SPIRV_OP(Capability, PackedCooperativeMatrixINTEL)
_SPIRV_OP(Op, CooperativeMatrixGetElementCoordINTEL)

_SPIRV_OP(Capability, CooperativeMatrixPrefetchINTEL)
_SPIRV_OP(Op, CooperativeMatrixPrefetchINTEL)
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45 changes: 45 additions & 0 deletions test/extensions/INTEL/SPV_INTEL_joint_matrix/bf16.ll
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@@ -0,0 +1,45 @@
; RUN: llvm-as < %s -o %t.bc
; RUN: llvm-spirv %t.bc --spirv-ext=+SPV_KHR_cooperative_matrix,+SPV_INTEL_joint_matrix -o %t.spv
; RUN: llvm-spirv %t.spv -to-text -o %t.spt
; RUN: FileCheck < %t.spt %s --check-prefix=CHECK-SPIRV
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@maarquitos14 maarquitos14 Dec 9, 2025

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Can we have a spirv-val check? Or is not prepared yet?


; RUN: llvm-spirv -r %t.spv -o %t.rev.bc
; RUN: llvm-dis < %t.rev.bc | FileCheck %s --check-prefix=CHECK-LLVM

; RUN: not llvm-spirv %t.bc --spirv-ext=+SPV_KHR_cooperative_matrix 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-ERROR

; CHECK-ERROR: RequiresExtension: Feature requires the following SPIR-V extension
; CHECK-ERROR-NEXT: SPV_INTEL_joint_matrix

; CHECK-SPIRV-DAG: Capability CooperativeMatrixKHR
; CHECK-SPIRV-DAG: Extension "SPV_KHR_cooperative_matrix"
; CHECK-SPIRV-DAG: Extension "SPV_INTEL_joint_matrix"
; CHECK-SPIRV-DAG: Capability CooperativeMatrixBFloat16ComponentTypeINTEL
; 64 stays for MatrixAAndBBFloat16ComponentsINTEL (0x40)
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@maarquitos14 maarquitos14 Dec 9, 2025

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Should we also test 0x80 and 0x100? I don't see them tested now.

; CHECK-SPIRV: CooperativeMatrixMulAddKHR [[#]] [[#]] [[#]] [[#]] [[#]] 64

; CHECK-LLVM: call spir_func target("spirv.CooperativeMatrixKHR", float, 3, 12, 12, 2) @_Z34__spirv_CooperativeMatrixMulAddKHRPU3AS145__spirv_CooperativeMatrixKHR__short_3_12_48_0PU3AS145__spirv_CooperativeMatrixKHR__short_2_48_12_1PU3AS145__spirv_CooperativeMatrixKHR__float_3_12_12_2i({{.*}}, i32 64)

target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "spir64-unknown-unknown"

define spir_kernel void @matrix_multiply(ptr addrspace(1) noundef align 1 %_arg_accA, ptr addrspace(1) noundef align 1 %_arg_accB, ptr addrspace(1) noundef align 1 %_arg_accC, i64 noundef %_arg_N, i64 noundef %_arg_K, i32 noundef %_arg_Initvalue) {
entry:
%matrixC = tail call spir_func target("spirv.CooperativeMatrixKHR", float, 3, 12, 12, 2) @_Z26__spirv_CompositeConstruct(float 0.0)
%matrixA = tail call spir_func noundef target("spirv.CooperativeMatrixKHR", i16, 3, 12, 48, 0) @_Z32__spirv_CooperativeMatrixLoadKHR_1(ptr addrspace(1) noundef %_arg_accA, i32 noundef 0, i64 noundef %_arg_K, i32 noundef 1)
%matrixB = tail call spir_func noundef target("spirv.CooperativeMatrixKHR", i16, 2, 48, 12, 1) @_Z32__spirv_CooperativeMatrixLoadKHR_2(ptr addrspace(1) noundef %_arg_accB, i32 noundef 1, i64 noundef %_arg_K)
%res = tail call spir_func noundef target("spirv.CooperativeMatrixKHR", float, 3, 12, 12, 2) @_Z34__spirv_CooperativeMatrixMulAddKHR(target("spirv.CooperativeMatrixKHR", i16, 3, 12, 48, 0) noundef %matrixA, target("spirv.CooperativeMatrixKHR", i16, 2, 48, 12, 1) noundef %matrixB, target("spirv.CooperativeMatrixKHR", float, 3, 12, 12, 2) noundef %matrixC, i32 noundef 64)
tail call spir_func void @_Z33__spirv_CooperativeMatrixStoreKHR(ptr addrspace(1) noundef %_arg_accC, target("spirv.CooperativeMatrixKHR", float, 3, 12, 12, 2) noundef %res, i32 noundef 0, i64 noundef %_arg_N, i32 noundef 1)
ret void
}

declare dso_local spir_func noundef target("spirv.CooperativeMatrixKHR", float, 3, 12, 12, 2) @_Z26__spirv_CompositeConstruct(float noundef)

declare dso_local spir_func noundef target("spirv.CooperativeMatrixKHR", float, 3, 12, 12, 2) @_Z34__spirv_CooperativeMatrixMulAddKHR(target("spirv.CooperativeMatrixKHR", i16, 3, 12, 48, 0) noundef, target("spirv.CooperativeMatrixKHR", i16, 2, 48, 12, 1) noundef, target("spirv.CooperativeMatrixKHR", float, 3, 12, 12, 2) noundef, i32 noundef)

declare dso_local spir_func target("spirv.CooperativeMatrixKHR", i16, 3, 12, 48, 0) @_Z32__spirv_CooperativeMatrixLoadKHR_1(ptr addrspace(1), i32, i64, i32)

declare dso_local spir_func target("spirv.CooperativeMatrixKHR", i16, 2, 48, 12, 1) @_Z32__spirv_CooperativeMatrixLoadKHR_2(ptr addrspace(1), i32, i64)

declare dso_local spir_func void @_Z33__spirv_CooperativeMatrixStoreKHR(ptr addrspace(1), target("spirv.CooperativeMatrixKHR", float, 3, 12, 12, 2), i32, i64, i32)
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