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[MLIR][LLVM] Add vector exception to composite type element ignore mode #89385

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Apr 19, 2024
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5 changes: 4 additions & 1 deletion mlir/lib/Target/LLVMIR/DebugImporter.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -71,7 +71,10 @@ DICompileUnitAttr DebugImporter::translateImpl(llvm::DICompileUnit *node) {
DICompositeTypeAttr DebugImporter::translateImpl(llvm::DICompositeType *node) {
std::optional<DIFlags> flags = symbolizeDIFlags(node->getFlags());
SmallVector<DINodeAttr> elements;
if (!dropDICompositeTypeElements) {

// A vector always requires an element.
bool isVectorType = flags && bitEnumContainsAll(*flags, DIFlags::Vector);
if (isVectorType || !dropDICompositeTypeElements) {
for (llvm::DINode *element : node->getElements()) {
assert(element && "expected a non-null element type");
elements.push_back(translate(element));
Expand Down
24 changes: 23 additions & 1 deletion mlir/test/Target/LLVMIR/Import/ignore-composite-type-elements.ll
Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
; RUN: mlir-translate -import-llvm -mlir-print-debuginfo -split-input-file -drop-di-composite-type-elements %s | FileCheck %s
; RUN: mlir-translate -import-llvm -mlir-print-debuginfo -split-input-file -drop-di-composite-type-elements -split-input-file %s | FileCheck %s

; Verifies that the according flag avoids the conversion of the elements of the
; DICompositeType.
Expand All @@ -23,3 +23,25 @@ define void @composite_type() !dbg !3 {
!7 = !{!9}
!8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !6, flags: DIFlagArtificial | DIFlagObjectPointer)
!9 = !DIDerivedType(tag: DW_TAG_member, name: "call_field", file: !2, baseType: !8)

; // -----

; CHECK: #{{.+}} = #llvm.di_composite_type<tag = DW_TAG_array_type, name = "vector",
; CHECK-SAME: baseType = #{{.*}}, flags = Vector, elements = #llvm.di_subrange<count = 4 : i64>

define void @composite_type() !dbg !3 {
ret void
}

!llvm.dbg.cu = !{!1}
!llvm.module.flags = !{!0}
!0 = !{i32 2, !"Debug Info Version", i32 3}
!1 = distinct !DICompileUnit(language: DW_LANG_C, file: !2)
!2 = !DIFile(filename: "debug-info.ll", directory: "/")
!3 = distinct !DISubprogram(name: "composite_type", scope: !2, file: !2, spFlags: DISPFlagDefinition, unit: !1, type: !4)
!4 = !DISubroutineType(types: !5)
!5 = !{!7}
!6 = !DIBasicType(name: "int")
!7 = !DICompositeType(tag: DW_TAG_array_type, name: "vector", flags: DIFlagVector, elements: !8, baseType: !6)
!8 = !{!9}
!9 = !DISubrange(count: 4)