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[Backport to 21] Implement SPV_INTEL_predicated_io extension (#3370) #3386

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Merged
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Oct 10, 2025
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[Backport to 21] Implement SPV_INTEL_predicated_io extension (#3370) #3386

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1 change: 1 addition & 0 deletions include/LLVMSPIRVExtensions.inc
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Original file line number Diff line number Diff line change
Expand Up @@ -82,3 +82,4 @@ EXT(SPV_INTEL_ternary_bitwise_function)
EXT(SPV_INTEL_int4)
EXT(SPV_INTEL_function_variants)
EXT(SPV_INTEL_shader_atomic_bfloat16)
EXT(SPV_INTEL_predicated_io)
17 changes: 17 additions & 0 deletions lib/SPIRV/libSPIRV/SPIRVInstruction.h
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Expand Up @@ -4478,5 +4478,22 @@ class SPIRVTernaryBitwiseFunctionINTELInst : public SPIRVInstTemplateBase {
_SPIRV_OP(BitwiseFunction, true, 7)
#undef _SPIRV_OP

class SPIRVPredicatedIOINTELInst : public SPIRVInstTemplateBase {
public:
std::optional<ExtensionID> getRequiredExtension() const override {
return ExtensionID::SPV_INTEL_predicated_io;
}
SPIRVCapVec getRequiredCapability() const override {
return getVec(internal::CapabilityPredicatedIOINTEL);
}
};

#define _SPIRV_OP(x, ...) \
typedef SPIRVInstTemplate<SPIRVPredicatedIOINTELInst, \
internal::Op##x##INTEL, __VA_ARGS__> \
SPIRV##x##INTEL;
_SPIRV_OP(PredicatedLoad, true, 6, true)
_SPIRV_OP(PredicatedStore, false, 4, true)
#undef _SPIRV_OP
} // namespace SPIRV
#endif // SPIRV_LIBSPIRV_SPIRVINSTRUCTION_H
1 change: 1 addition & 0 deletions lib/SPIRV/libSPIRV/SPIRVNameMapEnum.h
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Expand Up @@ -691,6 +691,7 @@ template <> inline void SPIRVMap<Capability, std::string>::init() {
add(CapabilityFunctionVariantsINTEL, "FunctionVariantsINTEL");
add(CapabilitySpecConditionalINTEL, "SpecConditionalINTEL");
add(internal::CapabilityBFloat16ArithmeticINTEL, "BFloat16ArithmeticINTEL");
add(internal::CapabilityPredicatedIOINTEL, "PredicatedIOINTEL");
}
SPIRV_DEF_NAMEMAP(Capability, SPIRVCapabilityNameMap)

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4 changes: 4 additions & 0 deletions lib/SPIRV/libSPIRV/SPIRVOpCodeEnumInternal.h
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Expand Up @@ -41,3 +41,7 @@ _SPIRV_OP_INTERNAL(ConvertHandleToSamplerINTEL,
internal::ConvertHandleToSamplerINTEL)
_SPIRV_OP_INTERNAL(ConvertHandleToSampledImageINTEL,
internal::ConvertHandleToSampledImageINTEL)
_SPIRV_OP_INTERNAL(PredicatedLoadINTEL,
internal::OpPredicatedLoadINTEL)
_SPIRV_OP_INTERNAL(PredicatedStoreINTEL,
internal::OpPredicatedStoreINTEL)
8 changes: 8 additions & 0 deletions lib/SPIRV/libSPIRV/spirv_internal.hpp
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Expand Up @@ -76,6 +76,8 @@ enum InternalOp {
IOpCooperativeMatrixConstructCheckedINTEL = 6195,
IOpCooperativeMatrixLoadOffsetINTEL = 6239,
IOpCooperativeMatrixStoreOffsetINTEL = 6240,
IOpPredicatedLoadINTEL = 6258,
IOpPredicatedStoreINTEL = 6259,
IOpJointMatrixWorkItemLengthINTEL = 6410,
IOpTypeTaskSequenceINTEL = 6199,
IOpMaskedGatherINTEL = 6428,
Expand Down Expand Up @@ -110,6 +112,7 @@ enum InternalCapability {
ICapabilityCooperativeMatrixOffsetInstructionsINTEL = 6238,
ICapabilityAtomicBFloat16AddINTEL = 6255,
ICapabilityAtomicBFloat16MinMaxINTEL = 6256,
ICapabilityPredicatedIOINTEL = 6257,
ICapabilityCooperativeMatrixPrefetchINTEL = 6411,
ICapabilityMaskedGatherScatterINTEL = 6427,
ICapabilityJointMatrixWIInstructionsINTEL = 6435,
Expand Down Expand Up @@ -208,6 +211,11 @@ _SPIRV_OP(Op, ConvertHandleToSampledImageINTEL)

_SPIRV_OP(Capability, AtomicBFloat16AddINTEL)
_SPIRV_OP(Capability, AtomicBFloat16MinMaxINTEL)

_SPIRV_OP(Capability, PredicatedIOINTEL)
_SPIRV_OP(Op, PredicatedLoadINTEL)
_SPIRV_OP(Op, PredicatedStoreINTEL)

#undef _SPIRV_OP

constexpr SourceLanguage SourceLanguagePython =
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75 changes: 75 additions & 0 deletions test/extensions/INTEL/SPV_INTEL_predicated_io/predicated_io_generic.ll
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@@ -0,0 +1,75 @@
; Generated with:
; source.cl:
; int __spirv_PredicatedLoadINTEL(const __global int* pointer, bool predicate, int default_value);
; int __spirv_PredicatedLoadINTEL(const __global int* pointer, bool predicate, int default_value, int memory_operands);
; void __spirv_PredicatedStoreINTEL(const __global int* pointer, int object, bool predicate);
; void __spirv_PredicatedStoreINTEL(const __global int* pointer, int object, bool predicate, int memory_operands);
;
; void foo(const __global int* load_pointer, __global int* store_pointer, int default_value, int store_object, bool predicate) {
; const int memory_ops = 0;
; int result1 = __spirv_PredicatedLoadINTEL(load_pointer, predicate, default_value);
; int result2 = __spirv_PredicatedLoadINTEL(load_pointer, predicate, default_value, memory_ops);
; __spirv_PredicatedStoreINTEL(store_pointer, store_object, predicate);
; __spirv_PredicatedStoreINTEL(store_pointer, store_object, predicate, memory_ops);
; }
; clang -cc1 -cl-std=clc++2021 -triple spir64-unknown-unknown -emit-llvm -finclude-default-header source.cl -o tmp.ll

; RUN: llvm-as %s -o %t.bc
; RUN: llvm-spirv %t.bc -o %t.spv --spirv-ext=+SPV_INTEL_predicated_io
; RUN: llvm-spirv %t.spv -o %t.spt --to-text
; RUN: FileCheck < %t.spt %s --check-prefix=CHECK-SPIRV

; RUN: llvm-spirv %t.spv -o %t.rev.bc -r --spirv-target-env=SPV-IR
; RUN: llvm-dis %t.rev.bc -o %t.rev.ll
; RUN: FileCheck < %t.rev.ll %s --check-prefix=CHECK-LLVM

; RUN: not llvm-spirv %t.bc 2>&1 | FileCheck %s --check-prefix=CHECK-ERROR
; CHECK-ERROR: RequiresExtension: Feature requires the following SPIR-V extension:
; CHECK-ERROR-NEXT: SPV_INTEL_predicated_io

; CHECK-SPIRV: Capability PredicatedIOINTEL
; CHECK-SPIRV: Extension "SPV_INTEL_predicated_io"
; CHECK-SPIRV-DAG: TypeInt [[#Int32Ty:]] 32 0
; CHECK-SPIRV-DAG: Constant [[#Int32Ty]] [[#Const0:]] 0
; CHECK-SPIRV-DAG: TypeVoid [[#VoidTy:]]
; CHECK-SPIRV-DAG: TypePointer [[#IntPtrTy:]] 5 [[#Int32Ty]]
; CHECK-SPIRV-DAG: TypeBool [[#BoolTy:]]
; CHECK-SPIRV: FunctionParameter [[#IntPtrTy]] [[#LoadPtr:]]
; CHECK-SPIRV: FunctionParameter [[#IntPtrTy]] [[#StorePtr:]]
; CHECK-SPIRV: FunctionParameter [[#Int32Ty]] [[#DefaultVal:]]
; CHECK-SPIRV: FunctionParameter [[#Int32Ty]] [[#StoreObj:]]
; CHECK-SPIRV: FunctionParameter [[#BoolTy]] [[#Predicate:]]
; CHECK-SPIRV: PredicatedLoadINTEL [[#Int32Ty]] [[#Result1:]] [[#LoadPtr]] [[#Predicate]] [[#DefaultVal]]
; CHECK-SPIRV: PredicatedLoadINTEL [[#Int32Ty]] [[#Result2:]] [[#LoadPtr]] [[#Predicate]] [[#DefaultVal]] [[#Const0]]
; CHECK-SPIRV: PredicatedStoreINTEL [[#StorePtr]] [[#StoreObj]] [[#Predicate]]
; CHECK-SPIRV: PredicatedStoreINTEL [[#StorePtr]] [[#StoreObj]] [[#Predicate]] [[#Const0]]

; CHECK-LLVM: call spir_func i32 @_Z27__spirv_PredicatedLoadINTELPU3AS1ibi(ptr addrspace(1) %{{.*}}, i1 %{{.*}}, i32 %{{.*}})
; CHECK-LLVM: call spir_func i32 @_Z27__spirv_PredicatedLoadINTELPU3AS1ibii(ptr addrspace(1) %{{.*}}, i1 %{{.*}}, i32 %{{.*}}, i32 0)
; CHECK-LLVM: call spir_func void @_Z28__spirv_PredicatedStoreINTELPU3AS1iib(ptr addrspace(1) %{{.*}}, i32 %{{.*}}, i1 %{{.*}})
; CHECK-LLVM: call spir_func void @_Z28__spirv_PredicatedStoreINTELPU3AS1iibi(ptr addrspace(1) %{{.*}}, i32 %{{.*}}, i1 %{{.*}}, i32 0)

target datalayout = "e-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-n8:16:32:64"
target triple = "spir64-unknown-unknown"

define spir_func void @foo(ptr addrspace(1) %load_pointer, ptr addrspace(1) %store_pointer, i32 %default_value, i32 %store_object, i1 zeroext %predicate) {
entry:
%1 = call spir_func i32 @_Z27__spirv_PredicatedLoadINTELPU3AS1Kibi(ptr addrspace(1) %load_pointer, i1 %predicate, i32 %default_value)
%2 = call spir_func i32 @_Z27__spirv_PredicatedLoadINTELPU3AS1Kibii(ptr addrspace(1) %load_pointer, i1 %predicate, i32 %default_value, i32 0)
call spir_func void @_Z28__spirv_PredicatedStoreINTELPU3AS1Kiib(ptr addrspace(1) %store_pointer, i32 %store_object, i1 %predicate)
call spir_func void @_Z28__spirv_PredicatedStoreINTELPU3AS1Kiibi(ptr addrspace(1) %store_pointer, i32 %store_object, i1 %predicate, i32 0)
ret void
}

declare spir_func i32 @_Z27__spirv_PredicatedLoadINTELPU3AS1Kibi(ptr addrspace(1), i1, i32)
declare spir_func i32 @_Z27__spirv_PredicatedLoadINTELPU3AS1Kibii(ptr addrspace(1), i1, i32, i32)
declare spir_func void @_Z28__spirv_PredicatedStoreINTELPU3AS1Kiib(ptr addrspace(1), i32, i1)
declare spir_func void @_Z28__spirv_PredicatedStoreINTELPU3AS1Kiibi(ptr addrspace(1), i32, i1, i32)

!opencl.spir.version = !{!0}
!spirv.Source = !{!1}
!llvm.ident = !{!2}

!0 = !{i32 1, i32 2}
!1 = !{i32 4, i32 100000}
!2 = !{!"clang version 17.0.0"}