Add basic lowering of generic function definitions. (#5015)

Very basic (incomplete) lowering of function definitions for generics.
This commit is contained in:
Alina Sbirlea
2025-02-27 21:17:46 +00:00
committed by GitHub
parent 0d10b5cd4c
commit 1f5e5a7b44
5 changed files with 222 additions and 30 deletions
+33 -11
View File
@@ -86,6 +86,16 @@ auto FileContext::Run() -> std::unique_ptr<llvm::Module> {
for (auto [id, _] : sem_ir_->functions().enumerate()) {
BuildFunctionDefinition(id);
}
// Lower function definitions for generics.
// This cannot be a range-based loop, as new definitions can be added
// while building other definitions.
// NOLINTNEXTLINE
for (size_t i = 0; i != specific_function_definitions_.size(); ++i) {
auto [function_id, specific_id] = specific_function_definitions_[i];
BuildFunctionDefinition(function_id, specific_id);
}
// Append `__global_init` to `llvm::global_ctors` to initialize global
// variables.
if (sem_ir().global_ctor_id().has_value()) {
@@ -185,8 +195,8 @@ auto FileContext::GetOrCreateFunction(SemIR::FunctionId function_id,
// TODO: Add this function to a list of specific functions whose definitions
// we need to emit.
specific_functions_[specific_id.index] = result;
// TODO: Should this be a pair of <function_id, specific_id> ?
specific_function_definitions_.push_back(specific_id);
// TODO: Use this to generate definitions for these functions.
specific_function_definitions_.push_back({function_id, specific_id});
return result;
}
@@ -302,7 +312,8 @@ auto FileContext::BuildFunctionDecl(SemIR::FunctionId function_id,
return llvm_function;
}
auto FileContext::BuildFunctionDefinition(SemIR::FunctionId function_id)
auto FileContext::BuildFunctionDefinition(SemIR::FunctionId function_id,
SemIR::SpecificId specific_id)
-> void {
const auto& function = sem_ir().functions().Get(function_id);
const auto& body_block_ids = function.body_block_ids;
@@ -311,14 +322,22 @@ auto FileContext::BuildFunctionDefinition(SemIR::FunctionId function_id)
return;
}
llvm::Function* llvm_function = GetFunction(function_id);
if (!llvm_function) {
// We chose not to lower this function at all, for example because it's a
// generic function.
return;
llvm::Function* llvm_function;
if (specific_id.has_value()) {
llvm_function = specific_functions_[specific_id.index];
} else {
llvm_function = GetFunction(function_id);
if (!llvm_function) {
// We chose not to lower this function at all, for example because it's a
// generic function.
return;
}
}
BuildFunctionBody(function_id, function, llvm_function);
// For non-generics we do not lower. For generics, the llvm function was
// created via GetOrCreateFunction prior to this when building the
// declaration.
BuildFunctionBody(function_id, function, llvm_function, specific_id);
}
auto FileContext::BuildFunctionBody(SemIR::FunctionId function_id,
@@ -350,12 +369,15 @@ auto FileContext::BuildFunctionBody(SemIR::FunctionId function_id,
auto lower_param = [&](SemIR::InstId param_id) {
// Get the value of the parameter from the function argument.
auto param_inst = sem_ir().insts().GetAs<SemIR::AnyParam>(param_id);
llvm::Value* param_value =
llvm::PoisonValue::get(GetType(param_inst.type_id));
llvm::Value* param_value;
if (SemIR::ValueRepr::ForType(sem_ir(), param_inst.type_id).kind !=
SemIR::ValueRepr::None) {
param_value = llvm_function->getArg(param_index);
++param_index;
} else {
param_value = llvm::PoisonValue::get(GetType(
SemIR::GetTypeInSpecific(sem_ir(), specific_id, param_inst.type_id)));
}
// The value of the parameter is the value of the argument.
function_lowering.SetLocal(param_id, param_value);
+8 -3
View File
@@ -103,8 +103,12 @@ class FileContext {
SemIR::SpecificId::None) -> llvm::Function*;
// Builds the definition for the given function. If the function is only a
// declaration with no definition, does nothing.
auto BuildFunctionDefinition(SemIR::FunctionId function_id) -> void;
// declaration with no definition, does nothing. If this is a generic it'll
// only be lowered if the specific_id is specified. During this lowering of
// a generic, more generic functions may be added for lowering.
auto BuildFunctionDefinition(
SemIR::FunctionId function_id,
SemIR::SpecificId specific_id = SemIR::SpecificId::None) -> void;
// Builds a functions body. Common functionality for all functions.
auto BuildFunctionBody(
@@ -163,7 +167,8 @@ class FileContext {
// definitions lowered after the lowering of other definitions.
// This list may grow while lowering generic definitions from this list.
// The list uses the `SpecificId` to index into specific_functions_.
llvm::SmallVector<SemIR::SpecificId, 10> specific_function_definitions_;
llvm::SmallVector<std::pair<SemIR::FunctionId, SemIR::SpecificId>, 10>
specific_function_definitions_;
// Provides lowered versions of types.
// Vector indexes correspond to `TypeId` indexes for non-symbolic types. We
+52 -15
View File
@@ -18,10 +18,12 @@ fn G() {
var c: C = {};
var d: D = {};
var n: i32 = 0;
var m: f64 = 0.0;
F(c);
F(d);
F(n);
F(m);
F(i32);
}
@@ -38,18 +40,23 @@ fn G() {
// CHECK:STDOUT: %c.var = alloca {}, align 8, !dbg !7
// CHECK:STDOUT: %d.var = alloca {}, align 8, !dbg !7
// CHECK:STDOUT: %n.var = alloca i32, align 4, !dbg !7
// CHECK:STDOUT: %m.var = alloca double, align 8, !dbg !7
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(i64 0, ptr %c.var), !dbg !7
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %c.var, ptr align 1 @C.val.loc18_3.2, i64 0, i1 false), !dbg !7
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(i64 0, ptr %d.var), !dbg !7
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %d.var, ptr align 1 @D.val.loc19_3.2, i64 0, i1 false), !dbg !8
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(i64 4, ptr %n.var), !dbg !7
// CHECK:STDOUT: store i32 0, ptr %n.var, align 4, !dbg !9
// CHECK:STDOUT: call void @_CF.Main.15b1f98bd9cc0c5b(ptr %c.var), !dbg !10
// CHECK:STDOUT: call void @_CF.Main.2cc450fc05045897(ptr %d.var), !dbg !11
// CHECK:STDOUT: %.loc24 = load i32, ptr %n.var, align 4, !dbg !12
// CHECK:STDOUT: call void @_CF.Main.b88d1103f417c6d4(i32 %.loc24), !dbg !13
// CHECK:STDOUT: call void @_CF.Main.5754c7a55c7cbe4a(%type zeroinitializer), !dbg !14
// CHECK:STDOUT: ret void, !dbg !15
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(i64 8, ptr %m.var), !dbg !7
// CHECK:STDOUT: store double 0.000000e+00, ptr %m.var, align 8, !dbg !10
// CHECK:STDOUT: call void @_CF.Main.15b1f98bd9cc0c5b(ptr %c.var), !dbg !11
// CHECK:STDOUT: call void @_CF.Main.2cc450fc05045897(ptr %d.var), !dbg !12
// CHECK:STDOUT: %.loc25 = load i32, ptr %n.var, align 4, !dbg !13
// CHECK:STDOUT: call void @_CF.Main.b88d1103f417c6d4(i32 %.loc25), !dbg !14
// CHECK:STDOUT: %.loc26 = load double, ptr %m.var, align 8, !dbg !15
// CHECK:STDOUT: call void @_CF.Main.66be507887ceee78(double %.loc26), !dbg !16
// CHECK:STDOUT: call void @_CF.Main.5754c7a55c7cbe4a(%type zeroinitializer), !dbg !17
// CHECK:STDOUT: ret void, !dbg !18
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
@@ -58,16 +65,33 @@ fn G() {
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.memcpy.p0.p0.i64(ptr noalias writeonly captures(none), ptr noalias readonly captures(none), i64, i1 immarg) #1
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CF.Main.15b1f98bd9cc0c5b(ptr)
// CHECK:STDOUT: define void @_CF.Main.15b1f98bd9cc0c5b(ptr %x) !dbg !19 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !20
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CF.Main.2cc450fc05045897(ptr)
// CHECK:STDOUT: define void @_CF.Main.2cc450fc05045897(ptr %x) !dbg !21 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !22
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CF.Main.b88d1103f417c6d4(i32)
// CHECK:STDOUT: define void @_CF.Main.b88d1103f417c6d4(i32 %x) !dbg !23 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !24
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CF.Main.5754c7a55c7cbe4a(%type)
// CHECK:STDOUT: define void @_CF.Main.66be507887ceee78(double %x) !dbg !25 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !26
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: define void @_CF.Main.5754c7a55c7cbe4a(%type %x) !dbg !27 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !28
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 2, 1, 0 }
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 3, 2, 1, 0 }
// CHECK:STDOUT: uselistorder ptr @llvm.memcpy.p0.p0.i64, { 1, 0 }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
@@ -86,9 +110,22 @@ fn G() {
// CHECK:STDOUT: !7 = !DILocation(line: 18, column: 3, scope: !4)
// CHECK:STDOUT: !8 = !DILocation(line: 19, column: 3, scope: !4)
// CHECK:STDOUT: !9 = !DILocation(line: 20, column: 3, scope: !4)
// CHECK:STDOUT: !10 = !DILocation(line: 22, column: 3, scope: !4)
// CHECK:STDOUT: !10 = !DILocation(line: 21, column: 3, scope: !4)
// CHECK:STDOUT: !11 = !DILocation(line: 23, column: 3, scope: !4)
// CHECK:STDOUT: !12 = !DILocation(line: 24, column: 5, scope: !4)
// CHECK:STDOUT: !13 = !DILocation(line: 24, column: 3, scope: !4)
// CHECK:STDOUT: !12 = !DILocation(line: 24, column: 3, scope: !4)
// CHECK:STDOUT: !13 = !DILocation(line: 25, column: 5, scope: !4)
// CHECK:STDOUT: !14 = !DILocation(line: 25, column: 3, scope: !4)
// CHECK:STDOUT: !15 = !DILocation(line: 17, column: 1, scope: !4)
// CHECK:STDOUT: !15 = !DILocation(line: 26, column: 5, scope: !4)
// CHECK:STDOUT: !16 = !DILocation(line: 26, column: 3, scope: !4)
// CHECK:STDOUT: !17 = !DILocation(line: 27, column: 3, scope: !4)
// CHECK:STDOUT: !18 = !DILocation(line: 17, column: 1, scope: !4)
// CHECK:STDOUT: !19 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main.15b1f98bd9cc0c5b", scope: null, file: !3, line: 11, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !20 = !DILocation(line: 11, column: 1, scope: !19)
// CHECK:STDOUT: !21 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main.2cc450fc05045897", scope: null, file: !3, line: 11, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !22 = !DILocation(line: 11, column: 1, scope: !21)
// CHECK:STDOUT: !23 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main.b88d1103f417c6d4", scope: null, file: !3, line: 11, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !24 = !DILocation(line: 11, column: 1, scope: !23)
// CHECK:STDOUT: !25 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main.66be507887ceee78", scope: null, file: !3, line: 11, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !26 = !DILocation(line: 11, column: 1, scope: !25)
// CHECK:STDOUT: !27 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main.5754c7a55c7cbe4a", scope: null, file: !3, line: 11, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !28 = !DILocation(line: 11, column: 1, scope: !27)
@@ -0,0 +1,123 @@
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/function/generic/call_basic.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/function/generic/call_basic.carbon
fn F[T:! type](x: T) {
}
fn H[T:! type](x: T) {
}
fn G[T:! type](x: T) -> T {
// TODO: the call below is crashing because proper type resolution to
// use the G specific, not the G generic is not done yet.
// H(T);
return x;
}
fn M() {
var n: i32 = 0;
var m: i32;
var p: f64 = 1.0;
var q: f64;
F(n);
m = G(n);
F(p);
q = G(p);
}
// CHECK:STDOUT: ; ModuleID = 'call_basic.carbon'
// CHECK:STDOUT: source_filename = "call_basic.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: define void @_CM.Main() !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %n.var = alloca i32, align 4, !dbg !7
// CHECK:STDOUT: %m.var = alloca i32, align 4, !dbg !7
// CHECK:STDOUT: %p.var = alloca double, align 8, !dbg !7
// CHECK:STDOUT: %q.var = alloca double, align 8, !dbg !7
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(i64 4, ptr %n.var), !dbg !7
// CHECK:STDOUT: store i32 0, ptr %n.var, align 4, !dbg !7
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(i64 4, ptr %m.var), !dbg !7
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(i64 8, ptr %p.var), !dbg !7
// CHECK:STDOUT: store double 1.000000e+00, ptr %p.var, align 8, !dbg !8
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(i64 8, ptr %q.var), !dbg !7
// CHECK:STDOUT: %.loc31 = load i32, ptr %n.var, align 4, !dbg !9
// CHECK:STDOUT: call void @_CF.Main.b88d1103f417c6d4(i32 %.loc31), !dbg !10
// CHECK:STDOUT: %.loc32 = load i32, ptr %n.var, align 4, !dbg !11
// CHECK:STDOUT: %G.call.loc32 = call i32 @_CG.Main.b88d1103f417c6d4(i32 %.loc32), !dbg !12
// CHECK:STDOUT: store i32 %G.call.loc32, ptr %m.var, align 4, !dbg !13
// CHECK:STDOUT: %.loc33 = load double, ptr %p.var, align 8, !dbg !14
// CHECK:STDOUT: call void @_CF.Main.66be507887ceee78(double %.loc33), !dbg !15
// CHECK:STDOUT: %.loc34 = load double, ptr %p.var, align 8, !dbg !16
// CHECK:STDOUT: %G.call.loc34 = call double @_CG.Main.66be507887ceee78(double %.loc34), !dbg !17
// CHECK:STDOUT: store double %G.call.loc34, ptr %q.var, align 8, !dbg !18
// CHECK:STDOUT: ret void, !dbg !19
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.lifetime.start.p0(i64 immarg, ptr captures(none)) #0
// CHECK:STDOUT:
// CHECK:STDOUT: define void @_CF.Main.b88d1103f417c6d4(i32 %x) !dbg !20 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !21
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: define i32 @_CG.Main.b88d1103f417c6d4(i32 %x) !dbg !22 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret i32 %x, !dbg !23
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: define void @_CF.Main.66be507887ceee78(double %x) !dbg !24 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !25
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: define double @_CG.Main.66be507887ceee78(double %x) !dbg !26 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret double %x, !dbg !27
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 3, 2, 1, 0 }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
// CHECK:STDOUT: !llvm.dbg.cu = !{!2}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "call_basic.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "M", linkageName: "_CM.Main", scope: null, file: !3, line: 25, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{}
// CHECK:STDOUT: !7 = !DILocation(line: 26, column: 3, scope: !4)
// CHECK:STDOUT: !8 = !DILocation(line: 28, column: 3, scope: !4)
// CHECK:STDOUT: !9 = !DILocation(line: 31, column: 5, scope: !4)
// CHECK:STDOUT: !10 = !DILocation(line: 31, column: 3, scope: !4)
// CHECK:STDOUT: !11 = !DILocation(line: 32, column: 9, scope: !4)
// CHECK:STDOUT: !12 = !DILocation(line: 32, column: 7, scope: !4)
// CHECK:STDOUT: !13 = !DILocation(line: 32, column: 3, scope: !4)
// CHECK:STDOUT: !14 = !DILocation(line: 33, column: 5, scope: !4)
// CHECK:STDOUT: !15 = !DILocation(line: 33, column: 3, scope: !4)
// CHECK:STDOUT: !16 = !DILocation(line: 34, column: 9, scope: !4)
// CHECK:STDOUT: !17 = !DILocation(line: 34, column: 7, scope: !4)
// CHECK:STDOUT: !18 = !DILocation(line: 34, column: 3, scope: !4)
// CHECK:STDOUT: !19 = !DILocation(line: 25, column: 1, scope: !4)
// CHECK:STDOUT: !20 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main.b88d1103f417c6d4", scope: null, file: !3, line: 11, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !21 = !DILocation(line: 11, column: 1, scope: !20)
// CHECK:STDOUT: !22 = distinct !DISubprogram(name: "G", linkageName: "_CG.Main.b88d1103f417c6d4", scope: null, file: !3, line: 17, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !23 = !DILocation(line: 21, column: 3, scope: !22)
// CHECK:STDOUT: !24 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main.66be507887ceee78", scope: null, file: !3, line: 11, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !25 = !DILocation(line: 11, column: 1, scope: !24)
// CHECK:STDOUT: !26 = distinct !DISubprogram(name: "G", linkageName: "_CG.Main.66be507887ceee78", scope: null, file: !3, line: 17, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !27 = !DILocation(line: 21, column: 3, scope: !26)
@@ -44,7 +44,10 @@ fn CallF() -> i32 {
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.memcpy.p0.p0.i64(ptr noalias writeonly captures(none), ptr noalias readonly captures(none), i64, i1 immarg) #1
// CHECK:STDOUT:
// CHECK:STDOUT: declare i32 @_CF.C.Main.b88d1103f417c6d4(ptr, i32)
// CHECK:STDOUT: define i32 @_CF.C.Main.b88d1103f417c6d4(ptr %self, i32 %x) !dbg !12 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret i32 %x, !dbg !13
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 1, 0 }
@@ -67,3 +70,5 @@ fn CallF() -> i32 {
// CHECK:STDOUT: !9 = !DILocation(line: 20, column: 14, scope: !4)
// CHECK:STDOUT: !10 = !DILocation(line: 20, column: 10, scope: !4)
// CHECK:STDOUT: !11 = !DILocation(line: 20, column: 3, scope: !4)
// CHECK:STDOUT: !12 = distinct !DISubprogram(name: "F", linkageName: "_CF.C.Main.b88d1103f417c6d4", scope: null, file: !3, line: 12, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !13 = !DILocation(line: 13, column: 5, scope: !12)