[flang-commits] [flang] [flang][debug] Support derived types. (PR #99476)
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flang-commits at lists.llvm.org
Thu Jul 18 04:57:38 PDT 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-flang-fir-hlfir
Author: Abid Qadeer (abidh)
<details>
<summary>Changes</summary>
This PR adds initial debug support for derived type. It handles `RecordType` and generates appropriate `DICompositeTypeAttr`. The `TypeInfoOp` is used to get information about the parent and location of the derived type.
We use `getTypeSizeAndAlignment` to get the size and alignment of the components of the derived types. This function needed a few changes to be suitable to be used here:
1. The `getTypeSizeAndAlignment` errored out on unsupported type which would not work with incremental way we are building debug support. I have added a new `success` parameter. If it is null, the function behaves same as before and calls `TODO()` for unsupported type. If this is not null, then a true/false status is returned which can be used by clients to see if function succeeded. This is not very clean but gets the job done without duplicating any code.
2. The Character type was returning size of just element and not the whole string which has been fixed.
The testcase checks for offsets of the components which had to be hardcoded in the test. So the testcase is currently enabled on x86_64.
If a derived type has a component whose type is not supported by the `getTypeSizeAndAlignment` then we will generate a place holder type for such derived type.
With this PR in place, this is how the debugging of derived types look like:
```
type :: t_date
integer :: year, month, day
end type
type :: t_address
integer :: house_number
end type
type, extends(t_address) :: t_person
character(len=20) name
end type
type, extends(t_person) :: t_employee
type(t_date) :: hired_date
real :: monthly_salary
end type
type(t_employee) :: employee
(gdb) p employee
$1 = ( t_person = ( t_address = ( house_number = 1 ), name = 'John', ' ' <repeats 16 times> ), hired_date = ( year = 2020, month = 1, day = 20 ), monthly_salary = 3.1400001 )
```
---
Patch is 22.02 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/99476.diff
6 Files Affected:
- (modified) flang/include/flang/Optimizer/Dialect/FIRType.h (+3-4)
- (modified) flang/lib/Optimizer/Dialect/FIRType.cpp (+17-10)
- (modified) flang/lib/Optimizer/Transforms/AddDebugInfo.cpp (+8-9)
- (modified) flang/lib/Optimizer/Transforms/DebugTypeGenerator.cpp (+58-2)
- (modified) flang/lib/Optimizer/Transforms/DebugTypeGenerator.h (+13-1)
- (added) flang/test/Transforms/debug-derived-type-1.fir (+73)
``````````diff
diff --git a/flang/include/flang/Optimizer/Dialect/FIRType.h b/flang/include/flang/Optimizer/Dialect/FIRType.h
index 3498a329ced30..bbb9cdeb9c1fe 100644
--- a/flang/include/flang/Optimizer/Dialect/FIRType.h
+++ b/flang/include/flang/Optimizer/Dialect/FIRType.h
@@ -487,10 +487,9 @@ std::string getTypeAsString(mlir::Type ty, const KindMapping &kindMap,
/// target dependent type size inquiries in lowering. It would also not be
/// straightforward given the need for a kind map that would need to be
/// converted in terms of mlir::DataLayoutEntryKey.
-std::pair<std::uint64_t, unsigned short>
-getTypeSizeAndAlignment(mlir::Location loc, mlir::Type ty,
- const mlir::DataLayout &dl,
- const fir::KindMapping &kindMap);
+std::pair<std::uint64_t, unsigned short> getTypeSizeAndAlignment(
+ mlir::Location loc, mlir::Type ty, const mlir::DataLayout &dl,
+ const fir::KindMapping &kindMap, bool *success = nullptr);
} // namespace fir
diff --git a/flang/lib/Optimizer/Dialect/FIRType.cpp b/flang/lib/Optimizer/Dialect/FIRType.cpp
index dbccacfa8be26..4d00ca058d506 100644
--- a/flang/lib/Optimizer/Dialect/FIRType.cpp
+++ b/flang/lib/Optimizer/Dialect/FIRType.cpp
@@ -1396,25 +1396,24 @@ void FIROpsDialect::registerTypes() {
std::pair<std::uint64_t, unsigned short>
fir::getTypeSizeAndAlignment(mlir::Location loc, mlir::Type ty,
const mlir::DataLayout &dl,
- const fir::KindMapping &kindMap) {
+ const fir::KindMapping &kindMap, bool *success) {
if (mlir::isa<mlir::IntegerType, mlir::FloatType, mlir::ComplexType>(ty)) {
llvm::TypeSize size = dl.getTypeSize(ty);
unsigned short alignment = dl.getTypeABIAlignment(ty);
return {size, alignment};
}
if (auto firCmplx = mlir::dyn_cast<fir::ComplexType>(ty)) {
- auto [floatSize, floatAlign] =
- getTypeSizeAndAlignment(loc, firCmplx.getEleType(kindMap), dl, kindMap);
+ auto [floatSize, floatAlign] = getTypeSizeAndAlignment(
+ loc, firCmplx.getEleType(kindMap), dl, kindMap, success);
return {llvm::alignTo(floatSize, floatAlign) + floatSize, floatAlign};
}
if (auto real = mlir::dyn_cast<fir::RealType>(ty))
- return getTypeSizeAndAlignment(loc, real.getFloatType(kindMap), dl,
- kindMap);
+ return getTypeSizeAndAlignment(loc, real.getFloatType(kindMap), dl, kindMap,
+ success);
if (auto seqTy = mlir::dyn_cast<fir::SequenceType>(ty)) {
auto [eleSize, eleAlign] =
- getTypeSizeAndAlignment(loc, seqTy.getEleTy(), dl, kindMap);
-
+ getTypeSizeAndAlignment(loc, seqTy.getEleTy(), dl, kindMap, success);
std::uint64_t size =
llvm::alignTo(eleSize, eleAlign) * seqTy.getConstantArraySize();
return {size, eleAlign};
@@ -1424,7 +1423,7 @@ fir::getTypeSizeAndAlignment(mlir::Location loc, mlir::Type ty,
unsigned short align = 1;
for (auto component : recTy.getTypeList()) {
auto [compSize, compAlign] =
- getTypeSizeAndAlignment(loc, component.second, dl, kindMap);
+ getTypeSizeAndAlignment(loc, component.second, dl, kindMap, success);
size =
llvm::alignTo(size, compAlign) + llvm::alignTo(compSize, compAlign);
align = std::max(align, compAlign);
@@ -1434,13 +1433,21 @@ fir::getTypeSizeAndAlignment(mlir::Location loc, mlir::Type ty,
if (auto logical = mlir::dyn_cast<fir::LogicalType>(ty)) {
mlir::Type intTy = mlir::IntegerType::get(
logical.getContext(), kindMap.getLogicalBitsize(logical.getFKind()));
- return getTypeSizeAndAlignment(loc, intTy, dl, kindMap);
+ return getTypeSizeAndAlignment(loc, intTy, dl, kindMap, success);
}
if (auto character = mlir::dyn_cast<fir::CharacterType>(ty)) {
mlir::Type intTy = mlir::IntegerType::get(
character.getContext(),
kindMap.getCharacterBitsize(character.getFKind()));
- return getTypeSizeAndAlignment(loc, intTy, dl, kindMap);
+ auto [compSize, compAlign] =
+ getTypeSizeAndAlignment(loc, intTy, dl, kindMap, success);
+ if (character.hasConstantLen())
+ compSize *= character.getLen();
+ return {compSize, compAlign};
+ }
+ if (success) {
+ *success = false;
+ return {0, 1};
}
TODO(loc, "computing size of a component");
}
diff --git a/flang/lib/Optimizer/Transforms/AddDebugInfo.cpp b/flang/lib/Optimizer/Transforms/AddDebugInfo.cpp
index 8bb24fb6c8078..6e6f38991f52c 100644
--- a/flang/lib/Optimizer/Transforms/AddDebugInfo.cpp
+++ b/flang/lib/Optimizer/Transforms/AddDebugInfo.cpp
@@ -68,13 +68,6 @@ class AddDebugInfoPass : public fir::impl::AddDebugInfoBase<AddDebugInfoPass> {
mlir::SymbolTable *symbolTable);
};
-static uint32_t getLineFromLoc(mlir::Location loc) {
- uint32_t line = 1;
- if (auto fileLoc = mlir::dyn_cast<mlir::FileLineColLoc>(loc))
- line = fileLoc.getLine();
- return line;
-}
-
bool debugInfoIsAlreadySet(mlir::Location loc) {
if (mlir::isa<mlir::FusedLoc>(loc))
return true;
@@ -159,13 +152,19 @@ void AddDebugInfoPass::handleGlobalOp(fir::GlobalOp globalOp,
return;
mlir::ModuleOp module = getOperation();
mlir::MLIRContext *context = &getContext();
- fir::DebugTypeGenerator typeGen(module);
+ fir::DebugTypeGenerator typeGen(module, symbolTable);
mlir::OpBuilder builder(context);
std::pair result = fir::NameUniquer::deconstruct(globalOp.getSymName());
if (result.first != fir::NameUniquer::NameKind::VARIABLE)
return;
+ // Discard entries that describe a derived type. Usually start with '.c.',
+ // '.dt.' or '.n.'. It would be better if result of the deconstruct had a flag
+ // for such values so that we dont have to look at string values.
+ if (!result.second.name.empty() && result.second.name[0] == '.')
+ return;
+
unsigned line = getLineFromLoc(globalOp.getLoc());
// DWARF5 says following about the fortran modules:
@@ -267,7 +266,7 @@ void AddDebugInfoPass::runOnOperation() {
mlir::StringAttr::get(context, result.second.name);
llvm::SmallVector<mlir::LLVM::DITypeAttr> types;
- fir::DebugTypeGenerator typeGen(module);
+ fir::DebugTypeGenerator typeGen(module, &symbolTable);
for (auto resTy : funcOp.getResultTypes()) {
auto tyAttr =
typeGen.convertType(resTy, fileAttr, cuAttr, funcOp.getLoc());
diff --git a/flang/lib/Optimizer/Transforms/DebugTypeGenerator.cpp b/flang/lib/Optimizer/Transforms/DebugTypeGenerator.cpp
index db559731552df..a94d1c41f56b0 100644
--- a/flang/lib/Optimizer/Transforms/DebugTypeGenerator.cpp
+++ b/flang/lib/Optimizer/Transforms/DebugTypeGenerator.cpp
@@ -16,6 +16,7 @@
#include "flang/Optimizer/CodeGen/DescriptorModel.h"
#include "flang/Optimizer/CodeGen/TypeConverter.h"
#include "flang/Optimizer/Support/DataLayout.h"
+#include "flang/Optimizer/Support/InternalNames.h"
#include "mlir/Pass/Pass.h"
#include "llvm/ADT/ScopeExit.h"
#include "llvm/BinaryFormat/Dwarf.h"
@@ -44,8 +45,9 @@ std::uint64_t getComponentOffset<0>(const mlir::DataLayout &dl,
return 0;
}
-DebugTypeGenerator::DebugTypeGenerator(mlir::ModuleOp m)
- : module(m), kindMapping(getKindMapping(m)) {
+DebugTypeGenerator::DebugTypeGenerator(mlir::ModuleOp m,
+ mlir::SymbolTable *symbolTable_)
+ : module(m), symbolTable(symbolTable_), kindMapping(getKindMapping(m)) {
LLVM_DEBUG(llvm::dbgs() << "DITypeAttr generator\n");
std::optional<mlir::DataLayout> dl =
@@ -154,6 +156,58 @@ mlir::LLVM::DITypeAttr DebugTypeGenerator::convertBoxedSequenceType(
dataLocation, /*rank=*/nullptr, allocated, associated);
}
+mlir::LLVM::DITypeAttr DebugTypeGenerator::convertRecordType(
+ fir::RecordType Ty, mlir::LLVM::DIFileAttr fileAttr,
+ mlir::LLVM::DIScopeAttr scope, mlir::Location loc) {
+ mlir::MLIRContext *context = module.getContext();
+ auto result = fir::NameUniquer::deconstruct(Ty.getName());
+ if (result.first != fir::NameUniquer::NameKind::DERIVED_TYPE)
+ return genPlaceholderType(context);
+
+ std::optional<mlir::DataLayout> dl =
+ fir::support::getOrSetDataLayout(module, /*allowDefaultLayout=*/true);
+ if (!dl) {
+ mlir::emitError(module.getLoc(), "Missing data layout attribute in module");
+ return genPlaceholderType(context);
+ }
+ unsigned line = 1;
+ mlir::LLVM::DITypeAttr parentTypeAttr = nullptr;
+ fir::TypeInfoOp tiOp = symbolTable->lookup<fir::TypeInfoOp>(Ty.getName());
+ if (tiOp) {
+ line = getLineFromLoc(tiOp.getLoc());
+ if (fir::RecordType parentTy = tiOp.getIfParentType())
+ parentTypeAttr =
+ convertRecordType(parentTy, fileAttr, scope, tiOp.getLoc());
+ }
+
+ llvm::SmallVector<mlir::LLVM::DINodeAttr> elements;
+ std::uint64_t offset = 0;
+ for (auto [fieldName, fieldTy] : Ty.getTypeList()) {
+ bool success = true;
+ auto [byteSize, byteAlign] =
+ fir::getTypeSizeAndAlignment(loc, fieldTy, *dl, kindMapping, &success);
+ if (!success)
+ return genPlaceholderType(context);
+
+ mlir::LLVM::DITypeAttr elemTy = convertType(fieldTy, fileAttr, scope, loc);
+ offset = llvm::alignTo(offset, byteAlign);
+ mlir::LLVM::DIDerivedTypeAttr tyAttr = mlir::LLVM::DIDerivedTypeAttr::get(
+ context, llvm::dwarf::DW_TAG_member,
+ mlir::StringAttr::get(context, fieldName), elemTy, byteSize * 8,
+ byteAlign * 8, offset * 8, /*optional<address space>=*/std::nullopt,
+ /*extra data=*/nullptr);
+ elements.push_back(tyAttr);
+ offset += llvm::alignTo(byteSize, byteAlign);
+ }
+
+ return mlir::LLVM::DICompositeTypeAttr::get(
+ context, llvm::dwarf::DW_TAG_structure_type, /*recursive_id=*/{},
+ mlir::StringAttr::get(context, result.second.name), fileAttr, line, scope,
+ parentTypeAttr, mlir::LLVM::DIFlags::Zero, offset * 8,
+ /*alignInBits=*/0, elements, /*dataLocation=*/nullptr, /*rank=*/nullptr,
+ /*allocated=*/nullptr, /*associated=*/nullptr);
+}
+
mlir::LLVM::DITypeAttr DebugTypeGenerator::convertSequenceType(
fir::SequenceType seqTy, mlir::LLVM::DIFileAttr fileAttr,
mlir::LLVM::DIScopeAttr scope, mlir::Location loc) {
@@ -310,6 +364,8 @@ DebugTypeGenerator::convertType(mlir::Type Ty, mlir::LLVM::DIFileAttr fileAttr,
} else if (auto charTy = mlir::dyn_cast_or_null<fir::CharacterType>(Ty)) {
return convertCharacterType(charTy, fileAttr, scope, loc,
/*hasDescriptor=*/false);
+ } else if (auto recTy = mlir::dyn_cast_or_null<fir::RecordType>(Ty)) {
+ return convertRecordType(recTy, fileAttr, scope, loc);
} else if (auto boxTy = mlir::dyn_cast_or_null<fir::BoxType>(Ty)) {
auto elTy = boxTy.getElementType();
if (auto seqTy = mlir::dyn_cast_or_null<fir::SequenceType>(elTy))
diff --git a/flang/lib/Optimizer/Transforms/DebugTypeGenerator.h b/flang/lib/Optimizer/Transforms/DebugTypeGenerator.h
index ec881e8be7cad..12d215a9f5775 100644
--- a/flang/lib/Optimizer/Transforms/DebugTypeGenerator.h
+++ b/flang/lib/Optimizer/Transforms/DebugTypeGenerator.h
@@ -23,7 +23,7 @@ namespace fir {
/// This converts FIR/mlir type to DITypeAttr.
class DebugTypeGenerator {
public:
- DebugTypeGenerator(mlir::ModuleOp module);
+ DebugTypeGenerator(mlir::ModuleOp module, mlir::SymbolTable *symbolTable);
mlir::LLVM::DITypeAttr convertType(mlir::Type Ty,
mlir::LLVM::DIFileAttr fileAttr,
@@ -31,6 +31,10 @@ class DebugTypeGenerator {
mlir::Location loc);
private:
+ mlir::LLVM::DITypeAttr convertRecordType(fir::RecordType Ty,
+ mlir::LLVM::DIFileAttr fileAttr,
+ mlir::LLVM::DIScopeAttr scope,
+ mlir::Location loc);
mlir::LLVM::DITypeAttr convertSequenceType(fir::SequenceType seqTy,
mlir::LLVM::DIFileAttr fileAttr,
mlir::LLVM::DIScopeAttr scope,
@@ -57,6 +61,7 @@ class DebugTypeGenerator {
bool genAllocated, bool genAssociated);
mlir::ModuleOp module;
+ mlir::SymbolTable *symbolTable;
KindMapping kindMapping;
std::uint64_t dimsSize;
std::uint64_t dimsOffset;
@@ -66,4 +71,11 @@ class DebugTypeGenerator {
} // namespace fir
+static uint32_t getLineFromLoc(mlir::Location loc) {
+ uint32_t line = 1;
+ if (auto fileLoc = mlir::dyn_cast<mlir::FileLineColLoc>(loc))
+ line = fileLoc.getLine();
+ return line;
+}
+
#endif // FORTRAN_OPTIMIZER_TRANSFORMS_DEBUGTYPEGENERATOR_H
diff --git a/flang/test/Transforms/debug-derived-type-1.fir b/flang/test/Transforms/debug-derived-type-1.fir
new file mode 100644
index 0000000000000..700e2fb09b291
--- /dev/null
+++ b/flang/test/Transforms/debug-derived-type-1.fir
@@ -0,0 +1,73 @@
+// RUN: fir-opt --add-debug-info --mlir-print-debuginfo %s | FileCheck %s
+
+// Only enabled on x86_64
+// REQUIRES: x86-registered-target
+
+module attributes {dlti.dl_spec = #dlti.dl_spec<#dlti.dl_entry<!llvm.ptr<272>, dense<64> : vector<4xi64>>, #dlti.dl_entry<!llvm.ptr<271>, dense<32> : vector<4xi64>>, #dlti.dl_entry<!llvm.ptr<270>, dense<32> : vector<4xi64>>, #dlti.dl_entry<f64, dense<64> : vector<2xi64>>, #dlti.dl_entry<f80, dense<128> : vector<2xi64>>, #dlti.dl_entry<f128, dense<128> : vector<2xi64>>, #dlti.dl_entry<i128, dense<128> : vector<2xi64>>, #dlti.dl_entry<i64, dense<64> : vector<2xi64>>, #dlti.dl_entry<i16, dense<16> : vector<2xi64>>, #dlti.dl_entry<i32, dense<32> : vector<2xi64>>, #dlti.dl_entry<f16, dense<16> : vector<2xi64>>, #dlti.dl_entry<!llvm.ptr, dense<64> : vector<4xi64>>, #dlti.dl_entry<i1, dense<8> : vector<2xi64>>, #dlti.dl_entry<i8, dense<8> : vector<2xi64>>, #dlti.dl_entry<"dlti.stack_alignment", 128 : i64>, #dlti.dl_entry<"dlti.endianness", "little">>, fir.defaultkind = "a1c4d8i4l4r4", fir.kindmap = "", llvm.data_layout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128", llvm.target_triple = "x86_64-unknown-linux-gnu", omp.is_gpu = false, omp.is_target_device = false, omp.version = #omp.version<version = 11>} {
+ fir.global @_QMm_employeeEemployee : !fir.type<_QMm_employeeTt_employee{t_person:!fir.type<_QMm_employeeTt_person{t_address:!fir.type<_QMm_employeeTt_address{house_number:i32}>,name:!fir.char<1,20>}>,hired_date:!fir.type<_QMm_employeeTt_date{year:i32,month:i32,day:i32}>,monthly_salary:f32}> {
+ %0 = fir.zero_bits !fir.type<_QMm_employeeTt_employee{t_person:!fir.type<_QMm_employeeTt_person{t_address:!fir.type<_QMm_employeeTt_address{house_number:i32}>,name:!fir.char<1,20>}>,hired_date:!fir.type<_QMm_employeeTt_date{year:i32,month:i32,day:i32}>,monthly_salary:f32}>
+ fir.has_value %0 : !fir.type<_QMm_employeeTt_employee{t_person:!fir.type<_QMm_employeeTt_person{t_address:!fir.type<_QMm_employeeTt_address{house_number:i32}>,name:!fir.char<1,20>}>,hired_date:!fir.type<_QMm_employeeTt_date{year:i32,month:i32,day:i32}>,monthly_salary:f32}>
+ } loc(#loc5)
+ fir.global @_QMt1Evar : !fir.type<_QMt1Tt_t1{age:i32,points:!fir.array<3x!fir.complex<4>>,cond:!fir.logical<1>,name:!fir.char<1,20>,ratio:f64}> {
+ %0 = fir.zero_bits !fir.type<_QMt1Tt_t1{age:i32,points:!fir.array<3x!fir.complex<4>>,cond:!fir.logical<1>,name:!fir.char<1,20>,ratio:f64}>
+ fir.has_value %0 : !fir.type<_QMt1Tt_t1{age:i32,points:!fir.array<3x!fir.complex<4>>,cond:!fir.logical<1>,name:!fir.char<1,20>,ratio:f64}>
+ } loc(#loc6)
+ fir.type_info @_QMt1Tt_t1 noinit nodestroy nofinal : !fir.type<_QMt1Tt_t1{age:i32,points:!fir.array<3x!fir.complex<4>>,cond:!fir.logical<1>,name:!fir.char<1,20>,ratio:f64}> loc(#loc7)
+ fir.type_info @_QMm_employeeTt_address noinit nodestroy nofinal : !fir.type<_QMm_employeeTt_address{house_number:i32}> loc(#loc1)
+ fir.type_info @_QMm_employeeTt_person noinit nodestroy nofinal extends !fir.type<_QMm_employeeTt_address{house_number:i32}> : !fir.type<_QMm_employeeTt_person{t_address:!fir.type<_QMm_employeeTt_address{house_number:i32}>,name:!fir.char<1,20>}> loc(#loc2)
+ fir.type_info @_QMm_employeeTt_date noinit nodestroy nofinal : !fir.type<_QMm_employeeTt_date{year:i32,month:i32,day:i32}> loc(#loc3)
+ fir.type_info @_QMm_employeeTt_employee noinit nodestroy nofinal extends !fir.type<_QMm_employeeTt_person{t_address:!fir.type<_QMm_employeeTt_address{house_number:i32}>,name:!fir.char<1,20>}> : !fir.type<_QMm_employeeTt_employee{t_person:!fir.type<_QMm_employeeTt_person{t_address:!fir.type<_QMm_employeeTt_address{house_number:i32}>,name:!fir.char<1,20>}>,hired_date:!fir.type<_QMm_employeeTt_date{year:i32,month:i32,day:i32}>,monthly_salary:f32}> loc(#loc4)
+ fir.type_info @_QFTt_pair noinit nodestroy nofinal : !fir.type<_QFTt_pair{i:i64,x:f64}> loc(#loc8)
+ func.func @_QQmain() attributes {fir.bindc_name = "test"} {
+ %1 = fir.alloca !fir.type<_QFTt_pair{i:i64,x:f64}> {bindc_name = "pair", uniq_name = "_QFEpair"}
+ %2 = fircg.ext_declare %1 {uniq_name = "_QFEpair"} : (!fir.ref<!fir.type<_QFTt_pair{i:i64,x:f64}>>) -> !fir.ref<!fir.type<_QFTt_pair{i:i64,x:f64}>> loc(#loc9)
+ return
+ } loc(#loc10)
+}
+#loc1 = loc("derived1.f90":24:1)
+#loc2 = loc("derived1.f90":35:25)
+#loc3 = loc("derived1.f90":17:1)
+#loc4 = loc("derived1.f90":46:1)
+#loc5 = loc("derived1.f90":50:3)
+#loc6 = loc("derived1.f90":62:3)
+#loc7 = loc("derived1.f90":70:3)
+#loc8 = loc("derived1.f90":85:3)
+#loc9 = loc("derived1.f90":77:3)
+#loc10 = loc("derived1.f90":75:3)
+
+
+// CHECK-DAG: #[[INT_TY:.*]] = #llvm.di_basic_type<tag = DW_TAG_base_type, name = "integer", sizeInBits = 32, encoding = DW_ATE_signed>
+// CHECK-DAG: #[[INT8_TY:.*]] = #llvm.di_basic_type<tag = DW_TAG_base_type, name = "integer", sizeInBits = 64, encoding = DW_ATE_signed>
+// CHECK-DAG: #[[REAL4_TY:.*]] = #llvm.di_basic_type<tag = DW_TAG_base_type, name = "real", sizeInBits = 32, encoding = DW_ATE_float>
+// CHECK-DAG: #[[CMX8_TY:.*]] = #llvm.di_basic_type<tag = DW_TAG_base_type, name = "complex", sizeInBits = 64, encoding = DW_ATE_complex_float>
+// CHECK-DAG: #[[CMX_ARR:.*]] = #llvm.di_composite_type<tag = DW_TAG_array_type, baseType = #[[CMX8_TY:.*]]{{.*}}>
+// CHECK-DAG: #[[LOG_TY:.*]] = #llvm.di_basic_type<tag = DW_TAG_base_type, name = "logical", sizeInBits = 8, encoding = DW_ATE_boolean>
+// CHECK-DAG: #[[REAL8_TY:.*]] = #llvm.di_basic_type<tag = DW_TAG_base_type, name = "real", sizeInBits = 64, encoding = DW_ATE_float>
+// CHECK-DAG: #[[STR_TY:.*]] = #llvm.di_string_type
+// CHECK-DAG: #[[MOD:.*]] = #llvm.di_module<{{.*}}name = "m_employee"{{.*}}>
+// CHECK-DAG: #[[MOD1:.*]] = #llvm.di_module<{{.*}}name = "t1"{{.*}}>
+// CHECK-DAG: #[[ELMA1:.*]] = #llvm.di_derived_type<tag = DW_TAG_member, name = "house_number", baseType = #[[INT_TY]], sizeInBits = 32, alignInBits = 32>
+// CHECK-DAG: #[[ADDR:.*]] = #llvm.di_composite_type<tag = DW_TAG_structure_type, name = "t_address"{{.*}}line = 24, scope = #[[MOD]], sizeInBits = 32, elements = #[[ELMA1]]>
+// CHECK-DAG: #[[ELMD1:.*]] = #llvm.di_derived_type<tag = DW_TAG_member, name = "year", baseType = #[[INT_TY]], sizeInBits = 32, alignInBits = 32>
+// CHECK-DAG: #[[ELMD2:.*]] = #llvm.di_derived_type<tag = DW_TAG_member, name = "month", baseType = #[[INT_TY]], sizeInBits = 32, alignInBits = 32, offsetInBits = 32>
+// CHECK-DAG: #[[ELMD3:.*]] = #llvm.di_derived_type<tag = DW_TAG_member, name = "day", baseType = #[[INT_TY]], sizeInBits = 32, alignInBits = 32, offsetInBits = 64>
+// CHECK-DAG: #[[DATE:.*]] = #llvm.di_composite_type<tag = DW_TAG_structure_type, name = "t_date", file = #di_file, line = 17, scope = #[[MOD]], sizeInBits = 96, elements = #[[ELMD1]], #[[ELMD2]], #[[ELMD3]]>
+// CHECK-DAG: #[[ELMP1:.*]] = #llvm.di_derived_type<tag = DW_TAG_member, name = "t_address", baseType = #[[ADDR]], sizeInBits = 32, alignInBits = 32>
+// CHECK-DAG: #[[ELMP2:.*]] = #llvm.di_derived_type<tag = DW_TAG_member, name = "name", baseType = #[[STR_TY]], sizeInBits = 160, alignInBits = 8, offsetInBits = 32>
+// CHECK-DAG: #[[PERS:.*]] = #llvm.di_composite_type<tag = DW_TAG_structure_type, name = "t_person"{{.*}}line = 35, scope = #[[MOD]], baseType = #[[ADDR]], sizeInBits = 192, elements = #[[ELMP1]], #[[ELMP2]]>
+// CHECK-DAG: #[[ELME1:.*]] = #llvm.di_derived_type<tag = DW_TAG_member, name = "t_person", baseType = #[[PERS]], sizeInBits = 192, alignInBits = 32>
+// CHECK-DAG: #[[ELME2:.*]] = #llvm.di_derived_type<tag = DW_TAG_me...
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/99476
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