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[mlir][spirv] Conditionally add SPV_KHR_non_semantic_info extension u… #152686

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Merged
merged 5 commits into from
Aug 13, 2025
Merged

[mlir][spirv] Conditionally add SPV_KHR_non_semantic_info extension u… #152686

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7bc82e5
[mlir][spirv] Conditionally add SPV_KHR_non_semantic_info extension u…
mahabadm Aug 8, 2025
6926cd3
Addressing code review comment
mahabadm Aug 11, 2025
548d731
Addressing further code review comment
mahabadm Aug 12, 2025
ffaf3cc
Merge branch 'llvm:main' into conditionally_serialize_non_semantic_in…
mahabadm Aug 12, 2025
e52ec62
Addressing further code review comment
mahabadm Aug 12, 2025
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20 changes: 17 additions & 3 deletions mlir/lib/Target/SPIRV/Serialization/Serializer.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,7 @@
#include "mlir/Dialect/SPIRV/IR/SPIRVDialect.h"
#include "mlir/Dialect/SPIRV/IR/SPIRVEnums.h"
#include "mlir/Dialect/SPIRV/IR/SPIRVTypes.h"
#include "mlir/Dialect/SPIRV/IR/TargetAndABI.h"
#include "mlir/Target/SPIRV/SPIRVBinaryUtils.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/Sequence.h"
Expand Down Expand Up @@ -112,7 +113,9 @@ LogicalResult Serializer::serialize() {

// TODO: handle the other sections
processCapability();
processExtension();
if (failed(processExtension())) {
return failure();
}
processMemoryModel();
processDebugInfo();

Expand Down Expand Up @@ -204,13 +207,24 @@ void Serializer::processDebugInfo() {
// TODO: Encode more debug instructions.
}

void Serializer::processExtension() {
LogicalResult Serializer::processExtension() {
llvm::SmallVector<uint32_t, 16> extName;
for (spirv::Extension ext : module.getVceTriple()->getExtensions()) {
llvm::SmallSet<Extension, 4> deducedExts;
deducedExts.insert_range(module.getVceTriple()->getExtensions());
auto nonSemanticInfoExt = spirv::Extension::SPV_KHR_non_semantic_info;
if (options.emitDebugInfo && !deducedExts.contains(nonSemanticInfoExt)) {
TargetEnvAttr targetEnvAttr = lookupTargetEnvOrDefault(module);
if (!is_contained(targetEnvAttr.getExtensions(), nonSemanticInfoExt))
return module.emitError(
"SPV_KHR_non_semantic_info extension not available");
deducedExts.insert(nonSemanticInfoExt);
}
for (spirv::Extension ext : deducedExts) {
extName.clear();
spirv::encodeStringLiteralInto(extName, spirv::stringifyExtension(ext));
encodeInstructionInto(extensions, spirv::Opcode::OpExtension, extName);
}
return success();
}

void Serializer::processMemoryModel() {
Expand Down
2 changes: 1 addition & 1 deletion mlir/lib/Target/SPIRV/Serialization/Serializer.h
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Expand Up @@ -102,7 +102,7 @@ class Serializer {

void processDebugInfo();

void processExtension();
LogicalResult processExtension();

void processMemoryModel();

Expand Down
2 changes: 1 addition & 1 deletion mlir/test/Target/SPIRV/debug.mlir
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@@ -1,6 +1,6 @@
// RUN: mlir-translate -no-implicit-module -test-spirv-roundtrip-debug -mlir-print-debuginfo -mlir-print-local-scope %s | FileCheck %s

spirv.module Logical GLSL450 requires #spirv.vce<v1.0, [Shader], []> {
spirv.module Logical GLSL450 requires #spirv.vce<v1.0, [Shader], [SPV_KHR_non_semantic_info]> attributes {spirv.target_env = #spirv.target_env<#spirv.vce<v1.0, [Shader], [SPV_KHR_non_semantic_info]>, #spirv.resource_limits<>>} {
// CHECK: loc({{".*debug.mlir"}}:5:3)
spirv.GlobalVariable @var0 bind(0, 1) : !spirv.ptr<f32, Input>
spirv.func @arithmetic(%arg0 : vector<4xf32>, %arg1 : vector<4xf32>) "None" {
Expand Down
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