[flang-commits] [flang] b3037ae - [MLIR][LLVM] Add distinct identifier to DICompileUnit attribute (#77070)
via flang-commits
flang-commits at lists.llvm.org
Sun Jan 7 22:42:39 PST 2024
Author: Christian Ulmann
Date: 2024-01-08T07:42:33+01:00
New Revision: b3037ae1fc6d26459e37f813757ad30872eb2eee
URL: https://github.com/llvm/llvm-project/commit/b3037ae1fc6d26459e37f813757ad30872eb2eee
DIFF: https://github.com/llvm/llvm-project/commit/b3037ae1fc6d26459e37f813757ad30872eb2eee.diff
LOG: [MLIR][LLVM] Add distinct identifier to DICompileUnit attribute (#77070)
This commit adds a distinct attribute parameter to the DICompileUnit to
enable the modeling of distinctness. LLVM requires DICompileUnits to be
distinct and there are cases where one gets two equivalent compilation
units but LLVM still requires differentiates them. We observed such
cases for combinations of LTO and inline functions.
This patch also changes the DIScopeForLLVMFuncOp pass to a module pass,
to ensure that only one distinct DICompileUnit is created, instead of
one for each function.
Added:
Modified:
flang/lib/Optimizer/Transforms/AddDebugFoundation.cpp
flang/test/Transforms/debug-line-table-existing.fir
flang/test/Transforms/debug-line-table-inc-file.fir
flang/test/Transforms/debug-line-table.fir
mlir/examples/toy/Ch6/toyc.cpp
mlir/examples/toy/Ch7/toyc.cpp
mlir/include/mlir/Dialect/LLVMIR/LLVMAttrDefs.td
mlir/include/mlir/Dialect/LLVMIR/Transforms/Passes.td
mlir/lib/Dialect/LLVMIR/Transforms/DIScopeForLLVMFuncOp.cpp
mlir/lib/Target/LLVMIR/DebugImporter.cpp
mlir/test/Dialect/LLVMIR/add-debuginfo-func-scope.mlir
mlir/test/Dialect/LLVMIR/call-location.mlir
mlir/test/Dialect/LLVMIR/debuginfo.mlir
mlir/test/Dialect/LLVMIR/global.mlir
mlir/test/Dialect/LLVMIR/invalid-call-location.mlir
mlir/test/Dialect/LLVMIR/loop-metadata.mlir
mlir/test/Dialect/LLVMIR/mem2reg-dbginfo.mlir
mlir/test/Target/LLVMIR/Import/debug-info.ll
mlir/test/Target/LLVMIR/Import/global-variables.ll
mlir/test/Target/LLVMIR/llvmir-debug.mlir
mlir/test/Target/LLVMIR/loop-metadata.mlir
Removed:
################################################################################
diff --git a/flang/lib/Optimizer/Transforms/AddDebugFoundation.cpp b/flang/lib/Optimizer/Transforms/AddDebugFoundation.cpp
index be8f26dc678ca6..9972961de29f25 100644
--- a/flang/lib/Optimizer/Transforms/AddDebugFoundation.cpp
+++ b/flang/lib/Optimizer/Transforms/AddDebugFoundation.cpp
@@ -65,9 +65,9 @@ void AddDebugFoundationPass::runOnOperation() {
mlir::LLVM::DIFileAttr fileAttr = getFileAttr(inputFilePath);
mlir::StringAttr producer = mlir::StringAttr::get(context, "Flang");
mlir::LLVM::DICompileUnitAttr cuAttr = mlir::LLVM::DICompileUnitAttr::get(
- context, llvm::dwarf::getLanguage("DW_LANG_Fortran95"), fileAttr,
- producer, /*isOptimized=*/false,
- mlir::LLVM::DIEmissionKind::LineTablesOnly);
+ context, mlir::DistinctAttr::create(mlir::UnitAttr::get(context)),
+ llvm::dwarf::getLanguage("DW_LANG_Fortran95"), fileAttr, producer,
+ /*isOptimized=*/false, mlir::LLVM::DIEmissionKind::LineTablesOnly);
module.walk([&](mlir::func::FuncOp funcOp) {
mlir::Location l = funcOp->getLoc();
diff --git a/flang/test/Transforms/debug-line-table-existing.fir b/flang/test/Transforms/debug-line-table-existing.fir
index 3585ef9ee2c437..3c81d75dbd6632 100644
--- a/flang/test/Transforms/debug-line-table-existing.fir
+++ b/flang/test/Transforms/debug-line-table-existing.fir
@@ -12,7 +12,7 @@ module attributes {} {
#di_file = #llvm.di_file<"simple.f90" in "/home/user01/llvm-project/build_release">
#loc = loc("/home/user01/llvm-project/build_release/simple.f90":0:0)
#loc1 = loc("/home/user01/llvm-project/build_release/simple.f90":1:1)
-#di_compile_unit = #llvm.di_compile_unit<sourceLanguage = DW_LANG_Fortran95, file = #di_file, producer = "Flang", isOptimized = false, emissionKind = LineTablesOnly>
+#di_compile_unit = #llvm.di_compile_unit<id = distinct[0]<>, sourceLanguage = DW_LANG_Fortran95, file = #di_file, producer = "Flang", isOptimized = false, emissionKind = LineTablesOnly>
#di_subroutine_type = #llvm.di_subroutine_type<callingConvention = DW_CC_normal, types = #di_basic_type, #di_basic_type>
#di_subprogram = #llvm.di_subprogram<compileUnit = #di_compile_unit, scope = #di_file, name = "_QPs1", linkageName = "_QPs1", file = #di_file, line = 1, scopeLine = 1, subprogramFlags = Definition, type = #di_subroutine_type>
#loc2 = loc(fused<#di_subprogram>[#loc1])
diff --git a/flang/test/Transforms/debug-line-table-inc-file.fir b/flang/test/Transforms/debug-line-table-inc-file.fir
index 5fdc384e0bdb0c..9ab4025a586268 100644
--- a/flang/test/Transforms/debug-line-table-inc-file.fir
+++ b/flang/test/Transforms/debug-line-table-inc-file.fir
@@ -30,7 +30,7 @@ module attributes {} {
// CHECK: #[[MODULE_LOC]] = loc("{{.*}}simple.f90":0:0)
// CHECK: #[[LOC_INC_FILE:.*]] = loc("{{.*}}inc.f90":1:1)
// CHECK: #[[LOC_FILE:.*]] = loc("{{.*}}simple.f90":3:1)
-// CHECK: #[[DI_CU:.*]] = #llvm.di_compile_unit<sourceLanguage = DW_LANG_Fortran95, file = #[[DI_FILE]], producer = "Flang", isOptimized = false, emissionKind = LineTablesOnly>
+// CHECK: #[[DI_CU:.*]] = #llvm.di_compile_unit<id = distinct[0]<>, sourceLanguage = DW_LANG_Fortran95, file = #[[DI_FILE]], producer = "Flang", isOptimized = false, emissionKind = LineTablesOnly>
// CHECK: #[[DI_SP_INC:.*]] = #llvm.di_subprogram<compileUnit = #[[DI_CU]], scope = #[[DI_FILE]], name = "_QPsinc", linkageName = "_QPsinc", file = #[[DI_INC_FILE]], {{.*}}>
// CHECK: #[[DI_SP:.*]] = #llvm.di_subprogram<compileUnit = #[[DI_CU]], scope = #[[DI_FILE]], name = "_QQmain", linkageName = "_QQmain", file = #[[DI_FILE]], {{.*}}>
// CHECK: #[[FUSED_LOC_INC_FILE]] = loc(fused<#[[DI_SP_INC]]>[#[[LOC_INC_FILE]]])
diff --git a/flang/test/Transforms/debug-line-table.fir b/flang/test/Transforms/debug-line-table.fir
index fa59aeb4aa3a7c..115c6929778ec4 100644
--- a/flang/test/Transforms/debug-line-table.fir
+++ b/flang/test/Transforms/debug-line-table.fir
@@ -18,7 +18,7 @@ module attributes { fir.defaultkind = "a1c4d8i4l4r4", fir.kindmap = "", llvm.dat
// CHECK: #di_file = #llvm.di_file<"[[FILE_NAME:.*]]" in "[[DIR_NAME:.*]]">
// CHECK: #[[MODULE_LOC]] = loc("[[DIR_NAME]]/[[FILE_NAME]]":1:1)
// CHECK: #[[SB_LOC]] = loc("./simple.f90":2:1)
-// CHECK: #di_compile_unit = #llvm.di_compile_unit<sourceLanguage = DW_LANG_Fortran95, file = #di_file, producer = "Flang", isOptimized = false, emissionKind = LineTablesOnly>
+// CHECK: #di_compile_unit = #llvm.di_compile_unit<id = distinct[0]<>, sourceLanguage = DW_LANG_Fortran95, file = #di_file, producer = "Flang", isOptimized = false, emissionKind = LineTablesOnly>
// CHECK: #di_subroutine_type = #llvm.di_subroutine_type<callingConvention = DW_CC_normal, types = #di_basic_type, #di_basic_type>
// CHECK: #di_subprogram = #llvm.di_subprogram<compileUnit = #di_compile_unit, scope = #di_file, name = "[[SB_NAME]]", linkageName = "[[SB_NAME]]", file = #di_file, line = 1, scopeLine = 1, subprogramFlags = Definition, type = #di_subroutine_type>
// CHECK: #[[FUSED_SB_LOC]] = loc(fused<#di_subprogram>[#[[SB_LOC]]])
diff --git a/mlir/examples/toy/Ch6/toyc.cpp b/mlir/examples/toy/Ch6/toyc.cpp
index 534f0d60e80092..ddc0c2516bb3cd 100644
--- a/mlir/examples/toy/Ch6/toyc.cpp
+++ b/mlir/examples/toy/Ch6/toyc.cpp
@@ -187,8 +187,7 @@ int loadAndProcessMLIR(mlir::MLIRContext &context,
// This is necessary to have line tables emitted and basic
// debugger working. In the future we will add proper debug information
// emission directly from our frontend.
- pm.addNestedPass<mlir::LLVM::LLVMFuncOp>(
- mlir::LLVM::createDIScopeForLLVMFuncOpPass());
+ pm.addPass(mlir::LLVM::createDIScopeForLLVMFuncOpPass());
}
if (mlir::failed(pm.run(*module)))
diff --git a/mlir/examples/toy/Ch7/toyc.cpp b/mlir/examples/toy/Ch7/toyc.cpp
index e4af0a3a3dce10..5eb40b779bcd69 100644
--- a/mlir/examples/toy/Ch7/toyc.cpp
+++ b/mlir/examples/toy/Ch7/toyc.cpp
@@ -188,8 +188,7 @@ int loadAndProcessMLIR(mlir::MLIRContext &context,
// This is necessary to have line tables emitted and basic
// debugger working. In the future we will add proper debug information
// emission directly from our frontend.
- pm.addNestedPass<mlir::LLVM::LLVMFuncOp>(
- mlir::LLVM::createDIScopeForLLVMFuncOpPass());
+ pm.addPass(mlir::LLVM::createDIScopeForLLVMFuncOpPass());
}
if (mlir::failed(pm.run(*module)))
diff --git a/mlir/include/mlir/Dialect/LLVMIR/LLVMAttrDefs.td b/mlir/include/mlir/Dialect/LLVMIR/LLVMAttrDefs.td
index f36ec0d02cf70d..3b8ca9d2e3c516 100644
--- a/mlir/include/mlir/Dialect/LLVMIR/LLVMAttrDefs.td
+++ b/mlir/include/mlir/Dialect/LLVMIR/LLVMAttrDefs.td
@@ -342,6 +342,7 @@ def LLVM_DIBasicTypeAttr : LLVM_Attr<"DIBasicType", "di_basic_type",
def LLVM_DICompileUnitAttr : LLVM_Attr<"DICompileUnit", "di_compile_unit",
/*traits=*/[], "DIScopeAttr"> {
let parameters = (ins
+ "DistinctAttr":$id,
LLVM_DILanguageParameter:$sourceLanguage,
"DIFileAttr":$file,
OptionalParameter<"StringAttr">:$producer,
diff --git a/mlir/include/mlir/Dialect/LLVMIR/Transforms/Passes.td b/mlir/include/mlir/Dialect/LLVMIR/Transforms/Passes.td
index 6ebbd08acfc431..0242cfd9abb7d5 100644
--- a/mlir/include/mlir/Dialect/LLVMIR/Transforms/Passes.td
+++ b/mlir/include/mlir/Dialect/LLVMIR/Transforms/Passes.td
@@ -66,7 +66,7 @@ def NVVMOptimizeForTarget : Pass<"llvm-optimize-for-nvvm-target"> {
let constructor = "::mlir::NVVM::createOptimizeForTargetPass()";
}
-def DIScopeForLLVMFuncOp : Pass<"ensure-debug-info-scope-on-llvm-func", "LLVM::LLVMFuncOp"> {
+def DIScopeForLLVMFuncOp : Pass<"ensure-debug-info-scope-on-llvm-func", "::mlir::ModuleOp"> {
let summary = "Materialize LLVM debug info subprogram attribute on every LLVMFuncOp";
let description = [{
Having a debug info subprogram attribute on a function is required for
diff --git a/mlir/lib/Dialect/LLVMIR/Transforms/DIScopeForLLVMFuncOp.cpp b/mlir/lib/Dialect/LLVMIR/Transforms/DIScopeForLLVMFuncOp.cpp
index ecdadd3062d36d..d2e2c09e876ff5 100644
--- a/mlir/lib/Dialect/LLVMIR/Transforms/DIScopeForLLVMFuncOp.cpp
+++ b/mlir/lib/Dialect/LLVMIR/Transforms/DIScopeForLLVMFuncOp.cpp
@@ -34,64 +34,88 @@ static FileLineColLoc extractFileLoc(Location loc) {
return FileLineColLoc();
}
+/// Creates a DISubprogramAttr with the provided compile unit and attaches it
+/// to the function. Does nothing when the function already has an attached
+/// subprogram.
+static void addScopeToFunction(LLVM::LLVMFuncOp llvmFunc,
+ LLVM::DICompileUnitAttr compileUnitAttr) {
+
+ Location loc = llvmFunc.getLoc();
+ if (loc->findInstanceOf<mlir::FusedLocWith<LLVM::DISubprogramAttr>>())
+ return;
+
+ MLIRContext *context = llvmFunc->getContext();
+
+ // Filename, line and colmun to associate to the function.
+ LLVM::DIFileAttr fileAttr;
+ int64_t line = 1, col = 1;
+ FileLineColLoc fileLoc = extractFileLoc(loc);
+ if (!fileLoc && compileUnitAttr) {
+ fileAttr = compileUnitAttr.getFile();
+ } else if (!fileLoc) {
+ fileAttr = LLVM::DIFileAttr::get(context, "<unknown>", "");
+ } else {
+ line = fileLoc.getLine();
+ col = fileLoc.getColumn();
+ StringRef inputFilePath = fileLoc.getFilename().getValue();
+ fileAttr =
+ LLVM::DIFileAttr::get(context, llvm::sys::path::filename(inputFilePath),
+ llvm::sys::path::parent_path(inputFilePath));
+ }
+ auto subroutineTypeAttr =
+ LLVM::DISubroutineTypeAttr::get(context, llvm::dwarf::DW_CC_normal, {});
+
+ StringAttr funcNameAttr = llvmFunc.getNameAttr();
+ auto subprogramAttr = LLVM::DISubprogramAttr::get(
+ context, compileUnitAttr, fileAttr, funcNameAttr, funcNameAttr, fileAttr,
+ /*line=*/line,
+ /*scopeline=*/col,
+ LLVM::DISubprogramFlags::Definition | LLVM::DISubprogramFlags::Optimized,
+ subroutineTypeAttr);
+ llvmFunc->setLoc(FusedLoc::get(context, {loc}, subprogramAttr));
+}
+
namespace {
/// Add a debug info scope to LLVMFuncOp that are missing it.
struct DIScopeForLLVMFuncOp
: public LLVM::impl::DIScopeForLLVMFuncOpBase<DIScopeForLLVMFuncOp> {
void runOnOperation() override {
- LLVM::LLVMFuncOp llvmFunc = getOperation();
- Location loc = llvmFunc.getLoc();
- if (loc->findInstanceOf<mlir::FusedLocWith<LLVM::DISubprogramAttr>>())
- return;
+ ModuleOp module = getOperation();
+ Location loc = module.getLoc();
MLIRContext *context = &getContext();
// To find a DICompileUnitAttr attached to a parent (the module for
// example), otherwise create a default one.
+ // Find a DICompileUnitAttr attached to the module, otherwise create a
+ // default one.
LLVM::DICompileUnitAttr compileUnitAttr;
- if (ModuleOp module = llvmFunc->getParentOfType<ModuleOp>()) {
- auto fusedCompileUnitAttr =
- module->getLoc()
- ->findInstanceOf<mlir::FusedLocWith<LLVM::DICompileUnitAttr>>();
- if (fusedCompileUnitAttr)
- compileUnitAttr = fusedCompileUnitAttr.getMetadata();
- }
-
- // Filename, line and colmun to associate to the function.
- LLVM::DIFileAttr fileAttr;
- int64_t line = 1, col = 1;
- FileLineColLoc fileLoc = extractFileLoc(loc);
- if (!fileLoc && compileUnitAttr) {
- fileAttr = compileUnitAttr.getFile();
- } else if (!fileLoc) {
- fileAttr = LLVM::DIFileAttr::get(context, "<unknown>", "");
+ auto fusedCompileUnitAttr =
+ module->getLoc()
+ ->findInstanceOf<mlir::FusedLocWith<LLVM::DICompileUnitAttr>>();
+ if (fusedCompileUnitAttr) {
+ compileUnitAttr = fusedCompileUnitAttr.getMetadata();
} else {
- line = fileLoc.getLine();
- col = fileLoc.getColumn();
- StringRef inputFilePath = fileLoc.getFilename().getValue();
- fileAttr = LLVM::DIFileAttr::get(
- context, llvm::sys::path::filename(inputFilePath),
- llvm::sys::path::parent_path(inputFilePath));
- }
- if (!compileUnitAttr) {
+ LLVM::DIFileAttr fileAttr;
+ if (FileLineColLoc fileLoc = extractFileLoc(loc)) {
+ StringRef inputFilePath = fileLoc.getFilename().getValue();
+ fileAttr = LLVM::DIFileAttr::get(
+ context, llvm::sys::path::filename(inputFilePath),
+ llvm::sys::path::parent_path(inputFilePath));
+ } else {
+ fileAttr = LLVM::DIFileAttr::get(context, "<unknown>", "");
+ }
+
compileUnitAttr = LLVM::DICompileUnitAttr::get(
- context, llvm::dwarf::DW_LANG_C, fileAttr,
- StringAttr::get(context, "MLIR"), /*isOptimized=*/true,
- LLVM::DIEmissionKind::LineTablesOnly);
+ context, DistinctAttr::create(UnitAttr::get(context)),
+ llvm::dwarf::DW_LANG_C, fileAttr, StringAttr::get(context, "MLIR"),
+ /*isOptimized=*/true, LLVM::DIEmissionKind::LineTablesOnly);
}
- auto subroutineTypeAttr =
- LLVM::DISubroutineTypeAttr::get(context, llvm::dwarf::DW_CC_normal, {});
-
- StringAttr funcNameAttr = llvmFunc.getNameAttr();
- auto subprogramAttr =
- LLVM::DISubprogramAttr::get(context, compileUnitAttr, fileAttr,
- funcNameAttr, funcNameAttr, fileAttr,
- /*line=*/line,
- /*scopeline=*/col,
- LLVM::DISubprogramFlags::Definition |
- LLVM::DISubprogramFlags::Optimized,
- subroutineTypeAttr);
- llvmFunc->setLoc(FusedLoc::get(context, {loc}, subprogramAttr));
+
+ // Create subprograms for each function with the same distinct compile unit.
+ module.walk([&](LLVM::LLVMFuncOp func) {
+ addScopeToFunction(func, compileUnitAttr);
+ });
}
};
@@ -99,4 +123,4 @@ struct DIScopeForLLVMFuncOp
std::unique_ptr<Pass> mlir::LLVM::createDIScopeForLLVMFuncOpPass() {
return std::make_unique<DIScopeForLLVMFuncOp>();
-}
\ No newline at end of file
+}
diff --git a/mlir/lib/Target/LLVMIR/DebugImporter.cpp b/mlir/lib/Target/LLVMIR/DebugImporter.cpp
index afc6918eae9755..97871c7fe97730 100644
--- a/mlir/lib/Target/LLVMIR/DebugImporter.cpp
+++ b/mlir/lib/Target/LLVMIR/DebugImporter.cpp
@@ -50,10 +50,11 @@ DIBasicTypeAttr DebugImporter::translateImpl(llvm::DIBasicType *node) {
DICompileUnitAttr DebugImporter::translateImpl(llvm::DICompileUnit *node) {
std::optional<DIEmissionKind> emissionKind =
symbolizeDIEmissionKind(node->getEmissionKind());
- return DICompileUnitAttr::get(context, node->getSourceLanguage(),
- translate(node->getFile()),
- getStringAttrOrNull(node->getRawProducer()),
- node->isOptimized(), emissionKind.value());
+ return DICompileUnitAttr::get(
+ context, DistinctAttr::create(UnitAttr::get(context)),
+ node->getSourceLanguage(), translate(node->getFile()),
+ getStringAttrOrNull(node->getRawProducer()), node->isOptimized(),
+ emissionKind.value());
}
DICompositeTypeAttr DebugImporter::translateImpl(llvm::DICompositeType *node) {
diff --git a/mlir/test/Dialect/LLVMIR/add-debuginfo-func-scope.mlir b/mlir/test/Dialect/LLVMIR/add-debuginfo-func-scope.mlir
index eff4c55e6bc0b4..be84d401646dce 100644
--- a/mlir/test/Dialect/LLVMIR/add-debuginfo-func-scope.mlir
+++ b/mlir/test/Dialect/LLVMIR/add-debuginfo-func-scope.mlir
@@ -1,6 +1,4 @@
-// RUN: mlir-opt %s --pass-pipeline="builtin.module(llvm.func(ensure-debug-info-scope-on-llvm-func))" --split-input-file --mlir-print-debuginfo | FileCheck %s
-
-
+// RUN: mlir-opt %s --pass-pipeline="builtin.module(ensure-debug-info-scope-on-llvm-func)" --split-input-file --mlir-print-debuginfo | FileCheck %s
// CHECK-LABEL: llvm.func @func_no_debug()
// CHECK: llvm.return loc(#loc
@@ -8,11 +6,12 @@
// CHECK: #di_file = #llvm.di_file<"<unknown>" in "">
// CHECK: #di_subprogram = #llvm.di_subprogram<compileUnit = #di_compile_unit, scope = #di_file, name = "func_no_debug", linkageName = "func_no_debug", file = #di_file, line = 1, scopeLine = 1, subprogramFlags = "Definition|Optimized", type = #di_subroutine_type>
// CHECK: #loc[[LOC]] = loc(fused<#di_subprogram>
-llvm.func @func_no_debug() {
- llvm.return loc(unknown)
+module {
+ llvm.func @func_no_debug() {
+ llvm.return loc(unknown)
+ } loc(unknown)
} loc(unknown)
-
// -----
// Test that existing debug info is not overwritten.
@@ -31,7 +30,7 @@ module {
#di_subroutine_type = #llvm.di_subroutine_type<callingConvention = DW_CC_normal>
#loc = loc("foo":0:0)
#loc1 = loc(unknown)
-#di_compile_unit = #llvm.di_compile_unit<sourceLanguage = DW_LANG_C, file = #di_file, producer = "MLIR", isOptimized = true, emissionKind = LineTablesOnly>
+#di_compile_unit = #llvm.di_compile_unit<id = distinct[0]<>, sourceLanguage = DW_LANG_C, file = #di_file, producer = "MLIR", isOptimized = true, emissionKind = LineTablesOnly>
#di_subprogram = #llvm.di_subprogram<compileUnit = #di_compile_unit, scope = #di_file, name = "func_with_debug", linkageName = "func_with_debug", file = #di_file, line = 42, scopeLine = 42, subprogramFlags = "Definition|Optimized", type = #di_subroutine_type>
#loc2 = loc(fused<#di_subprogram>[#loc1])
@@ -45,7 +44,7 @@ module {
// CHECK-DAG: #[[DI_FILE_MODULE:.+]] = #llvm.di_file<"bar.mlir" in "baz">
// CHECK-DAG: #[[DI_FILE_FUNC:.+]] = #llvm.di_file<"file.mlir" in "">
// CHECK-DAG: #loc[[FUNCFILELOC:[0-9]+]] = loc("file.mlir":9:8)
-// CHECK-DAG: #di_compile_unit = #llvm.di_compile_unit<sourceLanguage = DW_LANG_C, file = #[[DI_FILE_MODULE]], producer = "MLIR", isOptimized = true, emissionKind = LineTablesOnly>
+// CHECK-DAG: #di_compile_unit = #llvm.di_compile_unit<id = distinct[0]<>, sourceLanguage = DW_LANG_C, file = #[[DI_FILE_MODULE]], producer = "MLIR", isOptimized = true, emissionKind = LineTablesOnly>
// CHECK-DAG: #di_subprogram = #llvm.di_subprogram<compileUnit = #di_compile_unit, scope = #[[DI_FILE_FUNC]], name = "propagate_compile_unit", linkageName = "propagate_compile_unit", file = #[[DI_FILE_FUNC]], line = 9, scopeLine = 8, subprogramFlags = "Definition|Optimized", type = #di_subroutine_type>
// CHECK-DAG: #loc[[MODULELOC]] = loc(fused<#di_compile_unit>[#loc])
// CHECK-DAG: #loc[[FUNCLOC]] = loc(fused<#di_subprogram>[#loc[[FUNCFILELOC]]
@@ -55,5 +54,20 @@ module {
} loc("file.mlir":9:8)
} loc(#loc)
#di_file = #llvm.di_file<"bar.mlir" in "baz">
-#di_compile_unit = #llvm.di_compile_unit<sourceLanguage = DW_LANG_C, file = #di_file, producer = "MLIR", isOptimized = true, emissionKind = LineTablesOnly>
+#di_compile_unit = #llvm.di_compile_unit<id = distinct[0]<>, sourceLanguage = DW_LANG_C, file = #di_file, producer = "MLIR", isOptimized = true, emissionKind = LineTablesOnly>
#loc = loc(fused<#di_compile_unit>["foo.mlir":2:1])
+
+// -----
+
+// Test that only one compile unit is created.
+// CHECK-LABEL: module @multiple_funcs
+// CHECK: llvm.di_compile_unit
+// CHECK-NOT: llvm.di_compile_unit
+module @multiple_funcs {
+ llvm.func @func0() {
+ llvm.return loc(unknown)
+ } loc(unknown)
+ llvm.func @func1() {
+ llvm.return loc(unknown)
+ } loc(unknown)
+} loc(unknown)
diff --git a/mlir/test/Dialect/LLVMIR/call-location.mlir b/mlir/test/Dialect/LLVMIR/call-location.mlir
index 1b473743bcd055..4a98c9e8d720ad 100644
--- a/mlir/test/Dialect/LLVMIR/call-location.mlir
+++ b/mlir/test/Dialect/LLVMIR/call-location.mlir
@@ -2,7 +2,7 @@
#di_file = #llvm.di_file<"file.cpp" in "/folder/">
#di_compile_unit = #llvm.di_compile_unit<
- sourceLanguage = DW_LANG_C_plus_plus_14, file = #di_file,
+ id = distinct[0]<>, sourceLanguage = DW_LANG_C_plus_plus_14, file = #di_file,
isOptimized = true, emissionKind = Full
>
#di_subprogram = #llvm.di_subprogram<
diff --git a/mlir/test/Dialect/LLVMIR/debuginfo.mlir b/mlir/test/Dialect/LLVMIR/debuginfo.mlir
index 53c38b47970310..cef2ced391d676 100644
--- a/mlir/test/Dialect/LLVMIR/debuginfo.mlir
+++ b/mlir/test/Dialect/LLVMIR/debuginfo.mlir
@@ -3,10 +3,10 @@
// CHECK-DAG: #[[FILE:.*]] = #llvm.di_file<"debuginfo.mlir" in "/test/">
#file = #llvm.di_file<"debuginfo.mlir" in "/test/">
-// CHECK-DAG: #[[CU:.*]] = #llvm.di_compile_unit<sourceLanguage = DW_LANG_C, file = #[[FILE]], producer = "MLIR", isOptimized = true, emissionKind = Full>
+// CHECK-DAG: #[[CU:.*]] = #llvm.di_compile_unit<id = distinct[0]<>, sourceLanguage = DW_LANG_C, file = #[[FILE]], producer = "MLIR", isOptimized = true, emissionKind = Full>
#cu = #llvm.di_compile_unit<
- sourceLanguage = DW_LANG_C, file = #file, producer = "MLIR",
- isOptimized = true, emissionKind = Full
+ id = distinct[0]<>, sourceLanguage = DW_LANG_C, file = #file,
+ producer = "MLIR", isOptimized = true, emissionKind = Full
>
// CHECK-DAG: #[[NULL:.*]] = #llvm.di_null_type
diff --git a/mlir/test/Dialect/LLVMIR/global.mlir b/mlir/test/Dialect/LLVMIR/global.mlir
index 8133aa8913f30f..0649e814bfdfc0 100644
--- a/mlir/test/Dialect/LLVMIR/global.mlir
+++ b/mlir/test/Dialect/LLVMIR/global.mlir
@@ -263,7 +263,7 @@ llvm.mlir.global @target_fail(0 : i64) : !llvm.target<"spirv.Image", i32, 0>
// CHECK-DAG: #[[TYPE:.*]] = #llvm.di_basic_type<tag = DW_TAG_base_type, name = "uint64_t", sizeInBits = 64, encoding = DW_ATE_unsigned>
// CHECK-DAG: #[[FILE:.*]] = #llvm.di_file<"not" in "existence">
-// CHECK-DAG: #[[CU:.*]] = #llvm.di_compile_unit<sourceLanguage = DW_LANG_C, file = #[[FILE]], producer = "MLIR", isOptimized = true, emissionKind = Full>
+// CHECK-DAG: #[[CU:.*]] = #llvm.di_compile_unit<id = distinct[0]<>, sourceLanguage = DW_LANG_C, file = #[[FILE]], producer = "MLIR", isOptimized = true, emissionKind = Full>
// CHECK-DAG: #[[GVAR0:.*]] = #llvm.di_global_variable<scope = #[[CU]], name = "global_with_expr_1", linkageName = "global_with_expr_1", file = #[[FILE]], line = 370, type = #[[TYPE]], isLocalToUnit = true, isDefined = true, alignInBits = 8>
// CHECK-DAG: #[[GVAR1:.*]] = #llvm.di_global_variable<scope = #[[CU]], name = "global_with_expr_2", linkageName = "global_with_expr_2", file = #[[FILE]], line = 371, type = #[[TYPE]], isLocalToUnit = true, isDefined = true, alignInBits = 8>
// CHECK-DAG: #[[GVAR2:.*]] = #llvm.di_global_variable<scope = #[[CU]], name = "global_with_expr_3", linkageName = "global_with_expr_3", file = #[[FILE]], line = 372, type = #[[TYPE]], isLocalToUnit = true, isDefined = true, alignInBits = 8>
@@ -278,7 +278,7 @@ llvm.mlir.global @target_fail(0 : i64) : !llvm.target<"spirv.Image", i32, 0>
// CHECK-DAG: llvm.mlir.global external @global_with_expr4() {addr_space = 0 : i32, dbg_expr = #[[EXPR3]]} : i64
#di_file = #llvm.di_file<"not" in "existence">
-#di_compile_unit = #llvm.di_compile_unit<sourceLanguage = DW_LANG_C, file = #di_file, producer = "MLIR", isOptimized = true, emissionKind = Full>
+#di_compile_unit = #llvm.di_compile_unit<id = distinct[0]<>, sourceLanguage = DW_LANG_C, file = #di_file, producer = "MLIR", isOptimized = true, emissionKind = Full>
#di_basic_type = #llvm.di_basic_type<tag = DW_TAG_base_type, name = "uint64_t", sizeInBits = 64, encoding = DW_ATE_unsigned>
llvm.mlir.global external @global_with_expr1() {addr_space = 0 : i32, dbg_expr = #llvm.di_global_variable_expression<var = <scope = #di_compile_unit, name = "global_with_expr_1", linkageName = "global_with_expr_1", file = #di_file, line = 370, type = #di_basic_type, isLocalToUnit = true, isDefined = true, alignInBits = 8>, expr = <>>} : i64
llvm.mlir.global external @global_with_expr2() {addr_space = 0 : i32, dbg_expr = #llvm.di_global_variable_expression<var = <scope = #di_compile_unit, name = "global_with_expr_2", linkageName = "global_with_expr_2", file = #di_file, line = 371, type = #di_basic_type, isLocalToUnit = true, isDefined = true, alignInBits = 8>, expr = <[DW_OP_push_object_address, DW_OP_deref]>>} : i64
diff --git a/mlir/test/Dialect/LLVMIR/invalid-call-location.mlir b/mlir/test/Dialect/LLVMIR/invalid-call-location.mlir
index ff819b65681281..38b4ed9f6e83dc 100644
--- a/mlir/test/Dialect/LLVMIR/invalid-call-location.mlir
+++ b/mlir/test/Dialect/LLVMIR/invalid-call-location.mlir
@@ -5,8 +5,8 @@
#di_file = #llvm.di_file<"file.cpp" in "/folder/">
#di_compile_unit = #llvm.di_compile_unit<
- sourceLanguage = DW_LANG_C_plus_plus_14, file = #di_file,
- isOptimized = true, emissionKind = Full
+ id = distinct[0]<>, sourceLanguage = DW_LANG_C_plus_plus_14,
+ file = #di_file, isOptimized = true, emissionKind = Full
>
#di_subprogram = #llvm.di_subprogram<
compileUnit = #di_compile_unit, scope = #di_file,
diff --git a/mlir/test/Dialect/LLVMIR/loop-metadata.mlir b/mlir/test/Dialect/LLVMIR/loop-metadata.mlir
index bae20d1d6818ee..97d3aa8f7ec759 100644
--- a/mlir/test/Dialect/LLVMIR/loop-metadata.mlir
+++ b/mlir/test/Dialect/LLVMIR/loop-metadata.mlir
@@ -90,7 +90,7 @@ llvm.func @loop_annotation() {
// CHECK: #[[END_LOC:.*]] = loc("loop-metadata.mlir":52:4)
#loc2 = loc("loop-metadata.mlir":52:4)
-#di_compile_unit = #llvm.di_compile_unit<sourceLanguage = DW_LANG_C, file = #di_file, isOptimized = false, emissionKind = None>
+#di_compile_unit = #llvm.di_compile_unit<id = distinct[0]<>, sourceLanguage = DW_LANG_C, file = #di_file, isOptimized = false, emissionKind = None>
// CHECK: #[[SUBPROGRAM:.*]] = #llvm.di_subprogram<
#di_subprogram = #llvm.di_subprogram<compileUnit = #di_compile_unit, scope = #di_file, name = "loop_locs", file = #di_file, subprogramFlags = Definition>
diff --git a/mlir/test/Dialect/LLVMIR/mem2reg-dbginfo.mlir b/mlir/test/Dialect/LLVMIR/mem2reg-dbginfo.mlir
index bb96256f3af28f..f7ddb4a7abe5ad 100644
--- a/mlir/test/Dialect/LLVMIR/mem2reg-dbginfo.mlir
+++ b/mlir/test/Dialect/LLVMIR/mem2reg-dbginfo.mlir
@@ -5,7 +5,7 @@ llvm.func @use_ptr(!llvm.ptr)
#di_basic_type = #llvm.di_basic_type<tag = DW_TAG_base_type, name = "ptr sized type", sizeInBits = 64>
#di_file = #llvm.di_file<"test.ll" in "">
-#di_compile_unit = #llvm.di_compile_unit<sourceLanguage = DW_LANG_C_plus_plus_14, file = #di_file, producer = "clang", isOptimized = false, emissionKind = Full>
+#di_compile_unit = #llvm.di_compile_unit<id = distinct[0]<>, sourceLanguage = DW_LANG_C_plus_plus_14, file = #di_file, producer = "clang", isOptimized = false, emissionKind = Full>
#di_subprogram = #llvm.di_subprogram<compileUnit = #di_compile_unit, scope = #di_file, name = "blah", linkageName = "blah", file = #di_file, line = 7, subprogramFlags = Definition>
// CHECK: #[[$VAR:.*]] = #llvm.di_local_variable<{{.*}}name = "ptr sized var"{{.*}}>
#di_local_variable = #llvm.di_local_variable<scope = #di_subprogram, name = "ptr sized var", file = #di_file, line = 7, arg = 1, type = #di_basic_type>
diff --git a/mlir/test/Target/LLVMIR/Import/debug-info.ll b/mlir/test/Target/LLVMIR/Import/debug-info.ll
index f8bf00bbf3f6de..03e5e5a4837ac0 100644
--- a/mlir/test/Target/LLVMIR/Import/debug-info.ll
+++ b/mlir/test/Target/LLVMIR/Import/debug-info.ll
@@ -197,7 +197,7 @@ define void @composite_type() !dbg !3 {
; // -----
; CHECK-DAG: #[[FILE:.+]] = #llvm.di_file<"debug-info.ll" in "/">
-; CHECK-DAG: #[[CU:.+]] = #llvm.di_compile_unit<sourceLanguage = DW_LANG_C, file = #[[FILE]], isOptimized = false, emissionKind = None>
+; CHECK-DAG: #[[CU:.+]] = #llvm.di_compile_unit<id = distinct[0]<>, sourceLanguage = DW_LANG_C, file = #[[FILE]], isOptimized = false, emissionKind = None>
; Verify an empty subroutine types list is supported.
; CHECK-DAG: #[[SP_TYPE:.+]] = #llvm.di_subroutine_type<callingConvention = DW_CC_normal>
; CHECK-DAG: #[[SP:.+]] = #llvm.di_subprogram<compileUnit = #[[CU]], scope = #[[FILE]], name = "subprogram", linkageName = "subprogram", file = #[[FILE]], line = 42, scopeLine = 42, subprogramFlags = Definition, type = #[[SP_TYPE]]>
@@ -589,3 +589,28 @@ declare void @llvm.dbg.value(metadata, metadata, metadata)
!5 = !DICompositeType(tag: DW_TAG_array_type, size: 42, baseType: !6)
!6 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5)
!7 = !DILocation(line: 0, scope: !3)
+
+; // -----
+
+; Verifies that import compile units respect the distinctness of the input.
+; CHECK-LABEL: @distinct_cu_func0
+define void @distinct_cu_func0() !dbg !4 {
+ ret void
+}
+
+define void @distinct_cu_func1() !dbg !5 {
+ ret void
+}
+
+!llvm.dbg.cu = !{!0, !1}
+!llvm.module.flags = !{!3}
+
+; CHECK-COUNT-2: #llvm.di_compile_unit<id = distinct[{{[0-9]+}}]<>
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !2, producer: "clang")
+!1 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !2, producer: "clang")
+!2 = !DIFile(filename: "other.cpp", directory: "/")
+!3 = !{i32 2, !"Debug Info Version", i32 3}
+!4 = distinct !DISubprogram(name: "func", linkageName: "func", scope: !6, file: !6, line: 1, scopeLine: 1, flags: DIFlagArtificial, spFlags: DISPFlagDefinition, unit: !0)
+!5 = distinct !DISubprogram(name: "func", linkageName: "func", scope: !6, file: !6, line: 1, scopeLine: 1, flags: DIFlagArtificial, spFlags: DISPFlagDefinition, unit: !1)
+!6 = !DIFile(filename: "file.hpp", directory: "/")
diff --git a/mlir/test/Target/LLVMIR/Import/global-variables.ll b/mlir/test/Target/LLVMIR/Import/global-variables.ll
index ab930084323cf9..c59515dbaf7593 100644
--- a/mlir/test/Target/LLVMIR/Import/global-variables.ll
+++ b/mlir/test/Target/LLVMIR/Import/global-variables.ll
@@ -249,7 +249,7 @@ define void @bar() {
; CHECK-DAG: #[[TYPE:.*]] = #llvm.di_basic_type<tag = DW_TAG_base_type, name = "int", sizeInBits = 32, encoding = DW_ATE_signed>
; CHECK-DAG: #[[FILE:.*]] = #llvm.di_file<"source.c" in "/path/to/file">
-; CHECK-DAG: #[[CU:.*]] = #llvm.di_compile_unit<sourceLanguage = DW_LANG_C99, file = #[[FILE]], isOptimized = false, emissionKind = None>
+; CHECK-DAG: #[[CU:.*]] = #llvm.di_compile_unit<id = distinct[0]<>, sourceLanguage = DW_LANG_C99, file = #[[FILE]], isOptimized = false, emissionKind = None>
; CHECK-DAG: #[[SPROG:.*]] = #llvm.di_subprogram<scope = #[[CU]], name = "foo", file = #[[FILE]], line = 5, subprogramFlags = Definition>
; CHECK-DAG: #[[GVAR0:.*]] = #llvm.di_global_variable<scope = #[[SPROG]], name = "foo", linkageName = "foo", file = #[[FILE]], line = 7, type = #[[TYPE]], isLocalToUnit = true>
; CHECK-DAG: #[[GVAR1:.*]] = #llvm.di_global_variable<scope = #[[SPROG]], name = "bar", linkageName = "bar", file = #[[FILE]], line = 8, type = #[[TYPE]], isLocalToUnit = true>
diff --git a/mlir/test/Target/LLVMIR/llvmir-debug.mlir b/mlir/test/Target/LLVMIR/llvmir-debug.mlir
index 1133f57d6b61ee..476ed165887c08 100644
--- a/mlir/test/Target/LLVMIR/llvmir-debug.mlir
+++ b/mlir/test/Target/LLVMIR/llvmir-debug.mlir
@@ -35,8 +35,8 @@ llvm.func @func_no_debug() {
tag = DW_TAG_pointer_type, name = "named", baseType = #si32
>
#cu = #llvm.di_compile_unit<
- sourceLanguage = DW_LANG_C, file = #file, producer = "MLIR",
- isOptimized = true, emissionKind = Full
+ id = distinct[0]<>, sourceLanguage = DW_LANG_C, file = #file,
+ producer = "MLIR", isOptimized = true, emissionKind = Full
>
#composite = #llvm.di_composite_type<
tag = DW_TAG_structure_type, name = "composite", file = #file,
@@ -172,8 +172,8 @@ llvm.func @empty_types() {
#di_basic_type = #llvm.di_basic_type<tag = DW_TAG_base_type, name = "int", sizeInBits = 32, encoding = DW_ATE_signed>
#di_file = #llvm.di_file<"foo.mlir" in "/test/">
#di_compile_unit = #llvm.di_compile_unit<
- sourceLanguage = DW_LANG_C, file = #di_file, producer = "MLIR",
- isOptimized = true, emissionKind = Full
+ id = distinct[0]<>, sourceLanguage = DW_LANG_C, file = #di_file,
+ producer = "MLIR", isOptimized = true, emissionKind = Full
>
#di_subprogram = #llvm.di_subprogram<
compileUnit = #di_compile_unit, scope = #di_file, name = "outer_func",
@@ -216,8 +216,8 @@ llvm.func @func_with_inlined_dbg_value(%arg0: i32) -> (i32) {
#di_basic_type = #llvm.di_basic_type<tag = DW_TAG_base_type, name = "int", sizeInBits = 32, encoding = DW_ATE_signed>
#di_file = #llvm.di_file<"foo.mlir" in "/test/">
#di_compile_unit = #llvm.di_compile_unit<
- sourceLanguage = DW_LANG_C, file = #di_file, producer = "MLIR",
- isOptimized = true, emissionKind = Full
+ id = distinct[0]<>, sourceLanguage = DW_LANG_C, file = #di_file,
+ producer = "MLIR", isOptimized = true, emissionKind = Full
>
#di_subprogram = #llvm.di_subprogram<
compileUnit = #di_compile_unit, scope = #di_file, name = "func",
@@ -245,8 +245,8 @@ llvm.func @func_without_subprogram(%0 : i32) {
#di_file = #llvm.di_file<"foo.mlir" in "/test/">
#di_compile_unit = #llvm.di_compile_unit<
- sourceLanguage = DW_LANG_C, file = #di_file, producer = "MLIR",
- isOptimized = true, emissionKind = Full
+ id = distinct[0]<>, sourceLanguage = DW_LANG_C, file = #di_file,
+ producer = "MLIR", isOptimized = true, emissionKind = Full
>
#di_subprogram = #llvm.di_subprogram<
compileUnit = #di_compile_unit, scope = #di_file, name = "outer_func",
@@ -285,7 +285,7 @@ llvm.func @dbg_intrinsics_with_no_location(%arg0: i32) -> (i32) {
// CHECK-DAG: ![[GVALS]] = !{![[GEXPR0]], ![[GEXPR1]]}
#di_file_2 = #llvm.di_file<"not" in "existence">
-#di_compile_unit_2 = #llvm.di_compile_unit<sourceLanguage = DW_LANG_C, file = #di_file_2, producer = "MLIR", isOptimized = true, emissionKind = Full>
+#di_compile_unit_2 = #llvm.di_compile_unit<id = distinct[0]<>, sourceLanguage = DW_LANG_C, file = #di_file_2, producer = "MLIR", isOptimized = true, emissionKind = Full>
#di_basic_type_2 = #llvm.di_basic_type<tag = DW_TAG_base_type, name = "uint64_t", sizeInBits = 64, encoding = DW_ATE_unsigned>
llvm.mlir.global external @global_with_expr_1() {addr_space = 0 : i32, dbg_expr = #llvm.di_global_variable_expression<var = <scope = #di_compile_unit_2, name = "global_with_expr_1", linkageName = "global_with_expr_1", file = #di_file_2, line = 370, type = #di_basic_type_2>, expr = <>>} : i64
llvm.mlir.global external @global_with_expr_2() {addr_space = 0 : i32, dbg_expr = #llvm.di_global_variable_expression<var = <scope = #di_compile_unit_2, name = "global_with_expr_2", linkageName = "global_with_expr_2", file = #di_file_2, line = 371, type = #di_basic_type_2, isLocalToUnit = true, isDefined = true, alignInBits = 8>, expr = <>>} : i64
@@ -315,9 +315,9 @@ llvm.mlir.global external constant @".str.1"() {addr_space = 0 : i32, dbg_expr =
// CHECK-DAG: ![[FILE2:.*]] = !DIFile(filename: "foo2.mlir", directory: "/test/")
#di_file_2 = #llvm.di_file<"foo2.mlir" in "/test/">
// CHECK-DAG: ![[SCOPE2:.*]] = distinct !DICompileUnit(language: DW_LANG_C, file: ![[FILE2]], producer: "MLIR", isOptimized: true, runtimeVersion: 0, emissionKind: DebugDirectivesOnly)
-#di_compile_unit_1 = #llvm.di_compile_unit<sourceLanguage = DW_LANG_C, file = #di_file_1, producer = "MLIR", isOptimized = true, emissionKind = LineTablesOnly>
+#di_compile_unit_1 = #llvm.di_compile_unit<id = distinct[0]<>, sourceLanguage = DW_LANG_C, file = #di_file_1, producer = "MLIR", isOptimized = true, emissionKind = LineTablesOnly>
// CHECK-DAG: ![[SCOPE1:.*]] = distinct !DICompileUnit(language: DW_LANG_C, file: ![[FILE1]], producer: "MLIR", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly)
-#di_compile_unit_2 = #llvm.di_compile_unit<sourceLanguage = DW_LANG_C, file = #di_file_2, producer = "MLIR", isOptimized = true, emissionKind = DebugDirectivesOnly>
+#di_compile_unit_2 = #llvm.di_compile_unit<id = distinct[1]<>, sourceLanguage = DW_LANG_C, file = #di_file_2, producer = "MLIR", isOptimized = true, emissionKind = DebugDirectivesOnly>
#di_subprogram_1 = #llvm.di_subprogram<compileUnit = #di_compile_unit_1, scope = #di_file_1, name = "func1", file = #di_file_1, subprogramFlags = "Definition|Optimized">
#di_subprogram_2 = #llvm.di_subprogram<compileUnit = #di_compile_unit_2, scope = #di_file_2, name = "func2", file = #di_file_2, subprogramFlags = "Definition|Optimized">
diff --git a/mlir/test/Target/LLVMIR/loop-metadata.mlir b/mlir/test/Target/LLVMIR/loop-metadata.mlir
index a9aeebfa4d82d0..2fe4a994aeb66a 100644
--- a/mlir/test/Target/LLVMIR/loop-metadata.mlir
+++ b/mlir/test/Target/LLVMIR/loop-metadata.mlir
@@ -297,7 +297,7 @@ llvm.func @loopOptions(%arg1 : i32, %arg2 : i32) {
#loc1 = loc("loop-metadata.mlir":42:4)
#loc2 = loc("loop-metadata.mlir":52:4)
-#di_compile_unit = #llvm.di_compile_unit<sourceLanguage = DW_LANG_C, file = #di_file, isOptimized = false, emissionKind = None>
+#di_compile_unit = #llvm.di_compile_unit<id = distinct[0]<>, sourceLanguage = DW_LANG_C, file = #di_file, isOptimized = false, emissionKind = None>
#di_subprogram = #llvm.di_subprogram<compileUnit = #di_compile_unit, scope = #di_file, name = "loop_locs", file = #di_file, subprogramFlags = Definition>
#start_loc_fused = loc(fused<#di_subprogram>[#loc1])
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