Start plumbing through debug info type information with function parameters/return value (#6410)

This adds just enough debug info for i32/int parameters and return
values, with a path forward for adding DWARF type metadata for other
types.

As it happens, return type information is carried separately from
parameter information:
* Return type information is carried in the `type` of the `DISubprogram`
  (as a `DISubroutineType` - which does carry parameter type information
  as well, but that's unused when the DWARF is emitted by LLVM)
* Parameter information is carried by `DILocalVariable`s with a non-zero
  `arg` value (representing the order of function parameters)

In the absence of locations for the parameters (future work), nothing
would usually keep the `DILocalVariable` live/reachable when emitting
DWARF - so for cases where this can happen (for clang, this happens in
optimized builds where all references to the parameter variable might be
optimized away) the variables can be "retained" in a list on the
`DISubprogram` - achieved by passing `AlwaysPreserve` parameter to
`createParameterVariable` (adds them to a list, then that list gets
attached to the `DISubprogram` when it's finalized later)

For now, any unsupported types are emitted as `void*` (except void
return, which is implemented as void) as a placeholder.

Given this example:
```
import Core library "io";
class MyClass {
}
fn Unsupported(v: MyClass) {
}
fn Ret() -> i32 {
  return 42;
}
fn Arg(x: i32) {
  Core.Print(x);
}
fn Run() {
}
```
this is the resulting DWARF:
```
DW_TAG_compile_unit
  DW_AT_name    ("test.carbon")
  DW_TAG_subprogram
    DW_AT_name  ("Unsupported")
    DW_TAG_formal_parameter
      DW_AT_type        (0x00000066 "void *")
  DW_TAG_subprogram
    DW_AT_name  ("Ret")
    DW_AT_type  (0x00000062 "int")
  DW_TAG_subprogram
    DW_AT_name  ("Arg")
    DW_TAG_formal_parameter
      DW_AT_type        (0x00000062 "int")
  DW_TAG_subprogram
    DW_AT_name  ("Run")
  DW_TAG_base_type
    DW_AT_name  ("int")
  DW_TAG_pointer_type
```
And the debugger:
```
(gdb) p Ret()
$1 = 42
(gdb) p Arg(4)
4
$2 = void
```

I'm not sure if there's a way this logic should be merged with the logic
for making the `llvm::Function` type (which the `DISubroutineType`
building code was inspired by/copied from) - since they're done at
different times/places, I don't think there's an easy way to do it in
one pass, but maybe the code can be shared (even if it's run twice) in
some generic `SemIR::Function` type walker.

---------

Co-authored-by: Dana Jansens <danakj@orodu.net>
This commit is contained in:
David Blaikie
2025-11-25 23:25:09 +00:00
committed by GitHub
co-authored by Dana Jansens
parent 0baa74d96f
commit a179bd461b
184 changed files with 8098 additions and 6049 deletions
+76 -63
View File
@@ -80,20 +80,20 @@ fn InitLet() {
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CF.Main(ptr %x) #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !7
// CHECK:STDOUT: ret void, !dbg !10
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CG.Main()
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CCallF.Main() #0 !dbg !8 {
// CHECK:STDOUT: define void @_CCallF.Main() #0 !dbg !11 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc12_6.2.temp = alloca {}, align 8, !dbg !9
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc12_6.2.temp), !dbg !9
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %.loc12_6.2.temp, ptr align 1 @C.val.loc12_6.3, i64 0, i1 false), !dbg !9
// CHECK:STDOUT: call void @_CF.Main(ptr %.loc12_6.2.temp), !dbg !10
// CHECK:STDOUT: call void @_CG.Main(), !dbg !11
// CHECK:STDOUT: ret void, !dbg !12
// CHECK:STDOUT: %.loc12_6.2.temp = alloca {}, align 8, !dbg !14
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc12_6.2.temp), !dbg !14
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %.loc12_6.2.temp, ptr align 1 @C.val.loc12_6.3, i64 0, i1 false), !dbg !14
// CHECK:STDOUT: call void @_CF.Main(ptr %.loc12_6.2.temp), !dbg !15
// CHECK:STDOUT: call void @_CG.Main(), !dbg !16
// CHECK:STDOUT: ret void, !dbg !17
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
@@ -113,15 +113,20 @@ fn InitLet() {
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "let_param.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main", scope: null, file: !3, line: 6, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main", scope: null, file: !3, line: 6, type: !5, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !8)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{}
// CHECK:STDOUT: !7 = !DILocation(line: 6, column: 1, scope: !4)
// CHECK:STDOUT: !8 = distinct !DISubprogram(name: "CallF", linkageName: "_CCallF.Main", scope: null, file: !3, line: 11, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !9 = !DILocation(line: 12, column: 5, scope: !8)
// CHECK:STDOUT: !10 = !DILocation(line: 12, column: 3, scope: !8)
// CHECK:STDOUT: !11 = !DILocation(line: 15, column: 3, scope: !8)
// CHECK:STDOUT: !12 = !DILocation(line: 11, column: 1, scope: !8)
// CHECK:STDOUT: !6 = !{null, !7}
// CHECK:STDOUT: !7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 8)
// CHECK:STDOUT: !8 = !{!9}
// CHECK:STDOUT: !9 = !DILocalVariable(arg: 1, scope: !4, type: !7)
// CHECK:STDOUT: !10 = !DILocation(line: 6, column: 1, scope: !4)
// CHECK:STDOUT: !11 = distinct !DISubprogram(name: "CallF", linkageName: "_CCallF.Main", scope: null, file: !3, line: 11, type: !12, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !12 = !DISubroutineType(types: !13)
// CHECK:STDOUT: !13 = !{null}
// CHECK:STDOUT: !14 = !DILocation(line: 12, column: 5, scope: !11)
// CHECK:STDOUT: !15 = !DILocation(line: 12, column: 3, scope: !11)
// CHECK:STDOUT: !16 = !DILocation(line: 15, column: 3, scope: !11)
// CHECK:STDOUT: !17 = !DILocation(line: 11, column: 1, scope: !11)
// CHECK:STDOUT: ; ModuleID = 'var_param.carbon'
// CHECK:STDOUT: source_filename = "var_param.carbon"
// CHECK:STDOUT:
@@ -130,20 +135,20 @@ fn InitLet() {
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CF.Main(ptr %x) #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !7
// CHECK:STDOUT: ret void, !dbg !10
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CG.Main()
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CCallF.Main() #0 !dbg !8 {
// CHECK:STDOUT: define void @_CCallF.Main() #0 !dbg !11 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc6_6.1.temp = alloca {}, align 8, !dbg !9
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc6_6.1.temp), !dbg !9
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %.loc6_6.1.temp, ptr align 1 @C.val.loc6_6.2, i64 0, i1 false), !dbg !9
// CHECK:STDOUT: call void @_CF.Main(ptr %.loc6_6.1.temp), !dbg !10
// CHECK:STDOUT: call void @_CG.Main(), !dbg !11
// CHECK:STDOUT: ret void, !dbg !12
// CHECK:STDOUT: %.loc6_6.1.temp = alloca {}, align 8, !dbg !14
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc6_6.1.temp), !dbg !14
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %.loc6_6.1.temp, ptr align 1 @C.val.loc6_6.2, i64 0, i1 false), !dbg !14
// CHECK:STDOUT: call void @_CF.Main(ptr %.loc6_6.1.temp), !dbg !15
// CHECK:STDOUT: call void @_CG.Main(), !dbg !16
// CHECK:STDOUT: ret void, !dbg !17
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
@@ -163,15 +168,20 @@ fn InitLet() {
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "var_param.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main", scope: null, file: !3, line: 6, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main", scope: null, file: !3, line: 6, type: !5, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !8)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{}
// CHECK:STDOUT: !7 = !DILocation(line: 6, column: 1, scope: !4)
// CHECK:STDOUT: !8 = distinct !DISubprogram(name: "CallF", linkageName: "_CCallF.Main", scope: null, file: !3, line: 11, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !9 = !DILocation(line: 6, column: 6, scope: !8)
// CHECK:STDOUT: !10 = !DILocation(line: 12, column: 3, scope: !8)
// CHECK:STDOUT: !11 = !DILocation(line: 15, column: 3, scope: !8)
// CHECK:STDOUT: !12 = !DILocation(line: 11, column: 1, scope: !8)
// CHECK:STDOUT: !6 = !{null, !7}
// CHECK:STDOUT: !7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 8)
// CHECK:STDOUT: !8 = !{!9}
// CHECK:STDOUT: !9 = !DILocalVariable(arg: 1, scope: !4, type: !7)
// CHECK:STDOUT: !10 = !DILocation(line: 6, column: 1, scope: !4)
// CHECK:STDOUT: !11 = distinct !DISubprogram(name: "CallF", linkageName: "_CCallF.Main", scope: null, file: !3, line: 11, type: !12, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !12 = !DISubroutineType(types: !13)
// CHECK:STDOUT: !13 = !{null}
// CHECK:STDOUT: !14 = !DILocation(line: 6, column: 6, scope: !11)
// CHECK:STDOUT: !15 = !DILocation(line: 12, column: 3, scope: !11)
// CHECK:STDOUT: !16 = !DILocation(line: 15, column: 3, scope: !11)
// CHECK:STDOUT: !17 = !DILocation(line: 11, column: 1, scope: !11)
// CHECK:STDOUT: ; ModuleID = 'return_slot.carbon'
// CHECK:STDOUT: source_filename = "return_slot.carbon"
// CHECK:STDOUT:
@@ -180,37 +190,37 @@ fn InitLet() {
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CF.Main(ptr sret({}) %return) #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %return, ptr align 1 @C.val.loc7_12, i64 0, i1 false), !dbg !7
// CHECK:STDOUT: ret void, !dbg !7
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %return, ptr align 1 @C.val.loc7_12, i64 0, i1 false), !dbg !8
// CHECK:STDOUT: ret void, !dbg !8
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CG.Main()
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CForward.Main(ptr sret({}) %return) #0 !dbg !8 {
// CHECK:STDOUT: define void @_CForward.Main(ptr sret({}) %return) #0 !dbg !9 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @_CF.Main(ptr %return), !dbg !9
// CHECK:STDOUT: ret void, !dbg !10
// CHECK:STDOUT: call void @_CF.Main(ptr %return), !dbg !10
// CHECK:STDOUT: ret void, !dbg !11
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CInitVar.Main() #0 !dbg !11 {
// CHECK:STDOUT: define void @_CInitVar.Main() #0 !dbg !12 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %local.var = alloca {}, align 8, !dbg !12
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %local.var), !dbg !12
// CHECK:STDOUT: call void @_CF.Main(ptr %local.var), !dbg !13
// CHECK:STDOUT: call void @_CG.Main(), !dbg !14
// CHECK:STDOUT: ret void, !dbg !15
// CHECK:STDOUT: %local.var = alloca {}, align 8, !dbg !15
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %local.var), !dbg !15
// CHECK:STDOUT: call void @_CF.Main(ptr %local.var), !dbg !16
// CHECK:STDOUT: call void @_CG.Main(), !dbg !17
// CHECK:STDOUT: ret void, !dbg !18
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CInitLet.Main() #0 !dbg !16 {
// CHECK:STDOUT: define void @_CInitLet.Main() #0 !dbg !19 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc22_20.1.temp = alloca {}, align 8, !dbg !17
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc22_20.1.temp), !dbg !17
// CHECK:STDOUT: call void @_CF.Main(ptr %.loc22_20.1.temp), !dbg !17
// CHECK:STDOUT: call void @_CG.Main(), !dbg !18
// CHECK:STDOUT: ret void, !dbg !19
// CHECK:STDOUT: %.loc22_20.1.temp = alloca {}, align 8, !dbg !20
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc22_20.1.temp), !dbg !20
// CHECK:STDOUT: call void @_CF.Main(ptr %.loc22_20.1.temp), !dbg !20
// CHECK:STDOUT: call void @_CG.Main(), !dbg !21
// CHECK:STDOUT: ret void, !dbg !22
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
@@ -235,17 +245,20 @@ fn InitLet() {
// CHECK:STDOUT: !3 = !DIFile(filename: "return_slot.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main", scope: null, file: !3, line: 6, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{}
// CHECK:STDOUT: !7 = !DILocation(line: 7, column: 3, scope: !4)
// CHECK:STDOUT: !8 = distinct !DISubprogram(name: "Forward", linkageName: "_CForward.Main", scope: null, file: !3, line: 12, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !9 = !DILocation(line: 13, column: 10, scope: !8)
// CHECK:STDOUT: !10 = !DILocation(line: 13, column: 3, scope: !8)
// CHECK:STDOUT: !11 = distinct !DISubprogram(name: "InitVar", linkageName: "_CInitVar.Main", scope: null, file: !3, line: 16, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !12 = !DILocation(line: 17, column: 3, scope: !11)
// CHECK:STDOUT: !13 = !DILocation(line: 17, column: 18, scope: !11)
// CHECK:STDOUT: !14 = !DILocation(line: 18, column: 3, scope: !11)
// CHECK:STDOUT: !15 = !DILocation(line: 16, column: 1, scope: !11)
// CHECK:STDOUT: !16 = distinct !DISubprogram(name: "InitLet", linkageName: "_CInitLet.Main", scope: null, file: !3, line: 21, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !17 = !DILocation(line: 22, column: 18, scope: !16)
// CHECK:STDOUT: !18 = !DILocation(line: 23, column: 3, scope: !16)
// CHECK:STDOUT: !19 = !DILocation(line: 21, column: 1, scope: !16)
// CHECK:STDOUT: !6 = !{!7}
// CHECK:STDOUT: !7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 8)
// CHECK:STDOUT: !8 = !DILocation(line: 7, column: 3, scope: !4)
// CHECK:STDOUT: !9 = distinct !DISubprogram(name: "Forward", linkageName: "_CForward.Main", scope: null, file: !3, line: 12, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !10 = !DILocation(line: 13, column: 10, scope: !9)
// CHECK:STDOUT: !11 = !DILocation(line: 13, column: 3, scope: !9)
// CHECK:STDOUT: !12 = distinct !DISubprogram(name: "InitVar", linkageName: "_CInitVar.Main", scope: null, file: !3, line: 16, type: !13, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !13 = !DISubroutineType(types: !14)
// CHECK:STDOUT: !14 = !{null}
// CHECK:STDOUT: !15 = !DILocation(line: 17, column: 3, scope: !12)
// CHECK:STDOUT: !16 = !DILocation(line: 17, column: 18, scope: !12)
// CHECK:STDOUT: !17 = !DILocation(line: 18, column: 3, scope: !12)
// CHECK:STDOUT: !18 = !DILocation(line: 16, column: 1, scope: !12)
// CHECK:STDOUT: !19 = distinct !DISubprogram(name: "InitLet", linkageName: "_CInitLet.Main", scope: null, file: !3, line: 21, type: !13, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !20 = !DILocation(line: 22, column: 18, scope: !19)
// CHECK:STDOUT: !21 = !DILocation(line: 23, column: 3, scope: !19)
// CHECK:STDOUT: !22 = !DILocation(line: 21, column: 1, scope: !19)
@@ -33,5 +33,5 @@ fn Echo(a: {}) {
// CHECK:STDOUT: !3 = !DIFile(filename: "empty_struct.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "Echo", linkageName: "_CEcho.Main", scope: null, file: !3, line: 13, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{}
// CHECK:STDOUT: !6 = !{null}
// CHECK:STDOUT: !7 = !DILocation(line: 13, column: 1, scope: !4)
@@ -18,7 +18,7 @@ fn Foo(a: i32) {}
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CFoo.Main(i32 %a) #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !7
// CHECK:STDOUT: ret void, !dbg !10
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
@@ -30,7 +30,10 @@ fn Foo(a: i32) {}
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "params_one.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "Foo", linkageName: "_CFoo.Main", scope: null, file: !3, line: 13, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "Foo", linkageName: "_CFoo.Main", scope: null, file: !3, line: 13, type: !5, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !8)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{}
// CHECK:STDOUT: !7 = !DILocation(line: 13, column: 1, scope: !4)
// CHECK:STDOUT: !6 = !{null, !7}
// CHECK:STDOUT: !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !8 = !{!9}
// CHECK:STDOUT: !9 = !DILocalVariable(arg: 1, scope: !4, type: !7)
// CHECK:STDOUT: !10 = !DILocation(line: 13, column: 1, scope: !4)
@@ -18,7 +18,7 @@ fn Foo(a: i32, b: i32) {}
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CFoo.Main(i32 %a, i32 %b) #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !7
// CHECK:STDOUT: ret void, !dbg !11
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
@@ -30,7 +30,11 @@ fn Foo(a: i32, b: i32) {}
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "params_two.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "Foo", linkageName: "_CFoo.Main", scope: null, file: !3, line: 13, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "Foo", linkageName: "_CFoo.Main", scope: null, file: !3, line: 13, type: !5, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !8)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{}
// CHECK:STDOUT: !7 = !DILocation(line: 13, column: 1, scope: !4)
// CHECK:STDOUT: !6 = !{null, !7, !7}
// CHECK:STDOUT: !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !8 = !{!9, !10}
// CHECK:STDOUT: !9 = !DILocalVariable(arg: 1, scope: !4, type: !7)
// CHECK:STDOUT: !10 = !DILocalVariable(arg: 2, scope: !4, type: !7)
// CHECK:STDOUT: !11 = !DILocation(line: 13, column: 1, scope: !4)
@@ -32,5 +32,5 @@ fn Foo() {}
// CHECK:STDOUT: !3 = !DIFile(filename: "params_zero.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "Foo", linkageName: "_CFoo.Main", scope: null, file: !3, line: 13, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{}
// CHECK:STDOUT: !6 = !{null}
// CHECK:STDOUT: !7 = !DILocation(line: 13, column: 1, scope: !4)
@@ -33,5 +33,5 @@ fn r#self() {}
// CHECK:STDOUT: !3 = !DIFile(filename: "raw_name.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "self", linkageName: "_Cself.Main", scope: null, file: !3, line: 13, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{}
// CHECK:STDOUT: !6 = !{null}
// CHECK:STDOUT: !7 = !DILocation(line: 13, column: 1, scope: !4)
+90 -69
View File
@@ -36,65 +36,65 @@ fn Call() {
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_COneVar_i32.Main(ptr %n) #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !7
// CHECK:STDOUT: ret void, !dbg !10
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_COneVar_X.Main(ptr %x) #0 !dbg !8 {
// CHECK:STDOUT: define void @_COneVar_X.Main(ptr %x) #0 !dbg !11 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !9
// CHECK:STDOUT: ret void, !dbg !17
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CTwoVars.Main(ptr %a, ptr %b) #0 !dbg !10 {
// CHECK:STDOUT: define void @_CTwoVars.Main(ptr %a, ptr %b) #0 !dbg !18 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !11
// CHECK:STDOUT: ret void, !dbg !24
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CVarThenLet.Main(ptr %a, ptr %b) #0 !dbg !12 {
// CHECK:STDOUT: define void @_CVarThenLet.Main(ptr %a, ptr %b) #0 !dbg !25 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !13
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CLetThenVar.Main(i32 %a, ptr %b) #0 !dbg !14 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !15
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CCall.Main() #0 !dbg !16 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc15_15.1.temp = alloca i32, align 4, !dbg !17
// CHECK:STDOUT: %.loc16_13.1.temp = alloca {}, align 8, !dbg !18
// CHECK:STDOUT: %.loc18_12.1.temp = alloca i32, align 4, !dbg !19
// CHECK:STDOUT: %.loc18_24.1.temp = alloca {}, align 8, !dbg !20
// CHECK:STDOUT: %.loc20_15.1.temp = alloca i32, align 4, !dbg !21
// CHECK:STDOUT: %.loc27_18.2.temp = alloca {}, align 8, !dbg !22
// CHECK:STDOUT: %.loc21_23.1.temp = alloca {}, align 8, !dbg !23
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc15_15.1.temp), !dbg !17
// CHECK:STDOUT: store i32 1, ptr %.loc15_15.1.temp, align 4, !dbg !17
// CHECK:STDOUT: call void @_COneVar_i32.Main(ptr %.loc15_15.1.temp), !dbg !24
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc16_13.1.temp), !dbg !18
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %.loc16_13.1.temp, ptr align 1 @X.val.loc16_13.2, i64 0, i1 false), !dbg !18
// CHECK:STDOUT: call void @_COneVar_X.Main(ptr %.loc16_13.1.temp), !dbg !25
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc18_12.1.temp), !dbg !19
// CHECK:STDOUT: store i32 1, ptr %.loc18_12.1.temp, align 4, !dbg !19
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc18_24.1.temp), !dbg !20
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %.loc18_24.1.temp, ptr align 1 @X.val.loc16_13.2, i64 0, i1 false), !dbg !20
// CHECK:STDOUT: call void @_CTwoVars.Main(ptr %.loc18_12.1.temp, ptr %.loc18_24.1.temp), !dbg !26
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc20_15.1.temp), !dbg !21
// CHECK:STDOUT: store i32 1, ptr %.loc20_15.1.temp, align 4, !dbg !21
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc27_18.2.temp), !dbg !22
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %.loc27_18.2.temp, ptr align 1 @X.val.loc16_13.2, i64 0, i1 false), !dbg !22
// CHECK:STDOUT: call void @_CVarThenLet.Main(ptr %.loc20_15.1.temp, ptr %.loc27_18.2.temp), !dbg !27
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc21_23.1.temp), !dbg !23
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %.loc21_23.1.temp, ptr align 1 @X.val.loc16_13.2, i64 0, i1 false), !dbg !23
// CHECK:STDOUT: call void @_CLetThenVar.Main(i32 1, ptr %.loc21_23.1.temp), !dbg !28
// CHECK:STDOUT: ret void, !dbg !29
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CLetThenVar.Main(i32 %a, ptr %b) #0 !dbg !30 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !34
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CCall.Main() #0 !dbg !35 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc15_15.1.temp = alloca i32, align 4, !dbg !38
// CHECK:STDOUT: %.loc16_13.1.temp = alloca {}, align 8, !dbg !39
// CHECK:STDOUT: %.loc18_12.1.temp = alloca i32, align 4, !dbg !40
// CHECK:STDOUT: %.loc18_24.1.temp = alloca {}, align 8, !dbg !41
// CHECK:STDOUT: %.loc20_15.1.temp = alloca i32, align 4, !dbg !42
// CHECK:STDOUT: %.loc27_18.2.temp = alloca {}, align 8, !dbg !43
// CHECK:STDOUT: %.loc21_23.1.temp = alloca {}, align 8, !dbg !44
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc15_15.1.temp), !dbg !38
// CHECK:STDOUT: store i32 1, ptr %.loc15_15.1.temp, align 4, !dbg !38
// CHECK:STDOUT: call void @_COneVar_i32.Main(ptr %.loc15_15.1.temp), !dbg !45
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc16_13.1.temp), !dbg !39
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %.loc16_13.1.temp, ptr align 1 @X.val.loc16_13.2, i64 0, i1 false), !dbg !39
// CHECK:STDOUT: call void @_COneVar_X.Main(ptr %.loc16_13.1.temp), !dbg !46
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc18_12.1.temp), !dbg !40
// CHECK:STDOUT: store i32 1, ptr %.loc18_12.1.temp, align 4, !dbg !40
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc18_24.1.temp), !dbg !41
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %.loc18_24.1.temp, ptr align 1 @X.val.loc16_13.2, i64 0, i1 false), !dbg !41
// CHECK:STDOUT: call void @_CTwoVars.Main(ptr %.loc18_12.1.temp, ptr %.loc18_24.1.temp), !dbg !47
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc20_15.1.temp), !dbg !42
// CHECK:STDOUT: store i32 1, ptr %.loc20_15.1.temp, align 4, !dbg !42
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc27_18.2.temp), !dbg !43
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %.loc27_18.2.temp, ptr align 1 @X.val.loc16_13.2, i64 0, i1 false), !dbg !43
// CHECK:STDOUT: call void @_CVarThenLet.Main(ptr %.loc20_15.1.temp, ptr %.loc27_18.2.temp), !dbg !48
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc21_23.1.temp), !dbg !44
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %.loc21_23.1.temp, ptr align 1 @X.val.loc16_13.2, i64 0, i1 false), !dbg !44
// CHECK:STDOUT: call void @_CLetThenVar.Main(i32 1, ptr %.loc21_23.1.temp), !dbg !49
// CHECK:STDOUT: ret void, !dbg !50
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.lifetime.start.p0(ptr captures(none)) #1
// CHECK:STDOUT:
@@ -116,29 +116,50 @@ fn Call() {
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "var_param.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "OneVar_i32", linkageName: "_COneVar_i32.Main", scope: null, file: !3, line: 15, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "OneVar_i32", linkageName: "_COneVar_i32.Main", scope: null, file: !3, line: 15, type: !5, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !8)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{}
// CHECK:STDOUT: !7 = !DILocation(line: 15, column: 1, scope: !4)
// CHECK:STDOUT: !8 = distinct !DISubprogram(name: "OneVar_X", linkageName: "_COneVar_X.Main", scope: null, file: !3, line: 16, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !9 = !DILocation(line: 16, column: 1, scope: !8)
// CHECK:STDOUT: !10 = distinct !DISubprogram(name: "TwoVars", linkageName: "_CTwoVars.Main", scope: null, file: !3, line: 18, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !11 = !DILocation(line: 18, column: 1, scope: !10)
// CHECK:STDOUT: !12 = distinct !DISubprogram(name: "VarThenLet", linkageName: "_CVarThenLet.Main", scope: null, file: !3, line: 20, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !13 = !DILocation(line: 20, column: 1, scope: !12)
// CHECK:STDOUT: !14 = distinct !DISubprogram(name: "LetThenVar", linkageName: "_CLetThenVar.Main", scope: null, file: !3, line: 21, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !15 = !DILocation(line: 21, column: 1, scope: !14)
// CHECK:STDOUT: !16 = distinct !DISubprogram(name: "Call", linkageName: "_CCall.Main", scope: null, file: !3, line: 23, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !17 = !DILocation(line: 15, column: 15, scope: !16)
// CHECK:STDOUT: !18 = !DILocation(line: 16, column: 13, scope: !16)
// CHECK:STDOUT: !19 = !DILocation(line: 18, column: 12, scope: !16)
// CHECK:STDOUT: !20 = !DILocation(line: 18, column: 24, scope: !16)
// CHECK:STDOUT: !21 = !DILocation(line: 20, column: 15, scope: !16)
// CHECK:STDOUT: !22 = !DILocation(line: 27, column: 17, scope: !16)
// CHECK:STDOUT: !23 = !DILocation(line: 21, column: 23, scope: !16)
// CHECK:STDOUT: !24 = !DILocation(line: 24, column: 3, scope: !16)
// CHECK:STDOUT: !25 = !DILocation(line: 25, column: 3, scope: !16)
// CHECK:STDOUT: !26 = !DILocation(line: 26, column: 3, scope: !16)
// CHECK:STDOUT: !27 = !DILocation(line: 27, column: 3, scope: !16)
// CHECK:STDOUT: !28 = !DILocation(line: 28, column: 3, scope: !16)
// CHECK:STDOUT: !29 = !DILocation(line: 23, column: 1, scope: !16)
// CHECK:STDOUT: !6 = !{null, !7}
// CHECK:STDOUT: !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !8 = !{!9}
// CHECK:STDOUT: !9 = !DILocalVariable(arg: 1, scope: !4, type: !7)
// CHECK:STDOUT: !10 = !DILocation(line: 15, column: 1, scope: !4)
// CHECK:STDOUT: !11 = distinct !DISubprogram(name: "OneVar_X", linkageName: "_COneVar_X.Main", scope: null, file: !3, line: 16, type: !12, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !15)
// CHECK:STDOUT: !12 = !DISubroutineType(types: !13)
// CHECK:STDOUT: !13 = !{null, !14}
// CHECK:STDOUT: !14 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 8)
// CHECK:STDOUT: !15 = !{!16}
// CHECK:STDOUT: !16 = !DILocalVariable(arg: 1, scope: !11, type: !14)
// CHECK:STDOUT: !17 = !DILocation(line: 16, column: 1, scope: !11)
// CHECK:STDOUT: !18 = distinct !DISubprogram(name: "TwoVars", linkageName: "_CTwoVars.Main", scope: null, file: !3, line: 18, type: !19, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !21)
// CHECK:STDOUT: !19 = !DISubroutineType(types: !20)
// CHECK:STDOUT: !20 = !{null, !7, !14}
// CHECK:STDOUT: !21 = !{!22, !23}
// CHECK:STDOUT: !22 = !DILocalVariable(arg: 1, scope: !18, type: !7)
// CHECK:STDOUT: !23 = !DILocalVariable(arg: 2, scope: !18, type: !14)
// CHECK:STDOUT: !24 = !DILocation(line: 18, column: 1, scope: !18)
// CHECK:STDOUT: !25 = distinct !DISubprogram(name: "VarThenLet", linkageName: "_CVarThenLet.Main", scope: null, file: !3, line: 20, type: !19, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !26)
// CHECK:STDOUT: !26 = !{!27, !28}
// CHECK:STDOUT: !27 = !DILocalVariable(arg: 1, scope: !25, type: !7)
// CHECK:STDOUT: !28 = !DILocalVariable(arg: 2, scope: !25, type: !14)
// CHECK:STDOUT: !29 = !DILocation(line: 20, column: 1, scope: !25)
// CHECK:STDOUT: !30 = distinct !DISubprogram(name: "LetThenVar", linkageName: "_CLetThenVar.Main", scope: null, file: !3, line: 21, type: !19, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !31)
// CHECK:STDOUT: !31 = !{!32, !33}
// CHECK:STDOUT: !32 = !DILocalVariable(arg: 1, scope: !30, type: !7)
// CHECK:STDOUT: !33 = !DILocalVariable(arg: 2, scope: !30, type: !14)
// CHECK:STDOUT: !34 = !DILocation(line: 21, column: 1, scope: !30)
// CHECK:STDOUT: !35 = distinct !DISubprogram(name: "Call", linkageName: "_CCall.Main", scope: null, file: !3, line: 23, type: !36, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !36 = !DISubroutineType(types: !37)
// CHECK:STDOUT: !37 = !{null}
// CHECK:STDOUT: !38 = !DILocation(line: 15, column: 15, scope: !35)
// CHECK:STDOUT: !39 = !DILocation(line: 16, column: 13, scope: !35)
// CHECK:STDOUT: !40 = !DILocation(line: 18, column: 12, scope: !35)
// CHECK:STDOUT: !41 = !DILocation(line: 18, column: 24, scope: !35)
// CHECK:STDOUT: !42 = !DILocation(line: 20, column: 15, scope: !35)
// CHECK:STDOUT: !43 = !DILocation(line: 27, column: 17, scope: !35)
// CHECK:STDOUT: !44 = !DILocation(line: 21, column: 23, scope: !35)
// CHECK:STDOUT: !45 = !DILocation(line: 24, column: 3, scope: !35)
// CHECK:STDOUT: !46 = !DILocation(line: 25, column: 3, scope: !35)
// CHECK:STDOUT: !47 = !DILocation(line: 26, column: 3, scope: !35)
// CHECK:STDOUT: !48 = !DILocation(line: 27, column: 3, scope: !35)
// CHECK:STDOUT: !49 = !DILocation(line: 28, column: 3, scope: !35)
// CHECK:STDOUT: !50 = !DILocation(line: 23, column: 1, scope: !35)