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[Backport to 19] [SPIR-V 1.2] SPIRVReader: Add MaxByteOffsetId support #2897

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[Backport to 19] [SPIR-V 1.2] SPIRVReader: Add MaxByteOffsetId support #2897

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8 changes: 8 additions & 0 deletions lib/SPIRV/SPIRVReader.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3127,6 +3127,14 @@ void SPIRVToLLVM::transFunctionAttrs(SPIRVFunction *BF, Function *F) {
SPIRVWord MaxOffset = 0;
if (BA->hasDecorate(DecorationMaxByteOffset, 0, &MaxOffset))
Builder.addDereferenceableAttr(MaxOffset);
else {
SPIRVId MaxOffsetId;
if (BA->hasDecorateId(DecorationMaxByteOffsetId, 0, &MaxOffsetId)) {
if (auto MaxOffsetVal = transIdAsConstant(MaxOffsetId)) {
Builder.addDereferenceableAttr(*MaxOffsetVal);
}
}
}
if (auto Alignment = getAlignment(BA)) {
Builder.addAlignmentAttr(*Alignment);
}
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33 changes: 33 additions & 0 deletions test/MaxByteOffsetId.spvasm
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Original file line number Diff line number Diff line change
@@ -0,0 +1,33 @@
; REQUIRES: spirv-as

; RUN: spirv-as %s --target-env spv1.2 -o %t.spv
; RUN: spirv-val %t.spv
; RUN: llvm-spirv -r -o %t.rev.bc %t.spv
; RUN: llvm-dis %t.rev.bc -o - | FileCheck %s

; CHECK: define spir_kernel void @testMaxByteOffsetId(
; CHECK-SAME: ptr addrspace(1) dereferenceable(24) %p,
; CHECK-SAME: ptr addrspace(1) dereferenceable(48) %q)

OpCapability Addresses
OpCapability Kernel
OpMemoryModel Physical64 OpenCL
OpEntryPoint Kernel %fn "testMaxByteOffsetId"
OpName %p "p"
OpName %q "q"
OpDecorateId %p MaxByteOffsetId %mbo
OpDecorateId %q MaxByteOffsetId %spec
%void = OpTypeVoid
%i32 = OpTypeInt 32 0
%ptr = OpTypePointer CrossWorkgroup %i32
%fnTy = OpTypeFunction %void %ptr %ptr
%mbo = OpConstant %i32 24
%spec = OpSpecConstantOp %i32 IAdd %mbo %mbo

%fn = OpFunction %void None %fnTy
%p = OpFunctionParameter %ptr
%q = OpFunctionParameter %ptr
%entry = OpLabel

OpReturn
OpFunctionEnd
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