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Don't treat dependent types as having a copy value representation. (#6055)

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Add `Dependent` value and initializing representations for types whose
representations are unknown because they are dependent. When generating
SemIR in such cases, use a worst-case initializing representation that
both provides a destination address and also propagates a potential
result value.

Use this to fix incorrect lowering and lowering crashes for specific
functions involving generic types that don't use a copy value
representation.

In lowering, be careful to distinguish between whether the initializing
representation for the generic return type uses a return slot (which
affects whether the SemIR declaration and call have one) and whether the
initializing representation for the specific return type uses a return
slot (which affects whether the LLVM IR declaration and call have one).
This commit is contained in:
Richard Smith
2025-09-15 23:59:00 +00:00
committed by GitHub
parent ca40e9d693
commit b44ba47cf3
53 changed files with 1375 additions and 670 deletions
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toolchain/lower/testdata/function/generic/call_basic.carbon
Vendored
+167 -130
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@@ -40,8 +40,7 @@ fn G[T:! Core.Copy](x: T) -> T {
var ptr_i8 : i8*;
H(ptr_i8);
var c: C;
// TODO: This causes a crash.
// H(c);
H(c);
return x;
}
@@ -83,16 +82,16 @@ fn M() {
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %p.var), !dbg !11
// CHECK:STDOUT: store double 1.000000e+00, ptr %p.var, align 8, !dbg !11
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %q.var), !dbg !12
// CHECK:STDOUT: %.loc55 = load i32, ptr %n.var, align 4, !dbg !13
// CHECK:STDOUT: call void @_CF.Main.b88d1103f417c6d4(i32 %.loc55), !dbg !14
// CHECK:STDOUT: %.loc56_9 = load i32, ptr %n.var, align 4, !dbg !15
// CHECK:STDOUT: %G.call.loc56 = call i32 @_CG.Main.de631560529e9861(i32 %.loc56_9), !dbg !16
// CHECK:STDOUT: store i32 %G.call.loc56, ptr %m.var, align 4, !dbg !17
// CHECK:STDOUT: %.loc57 = load double, ptr %p.var, align 8, !dbg !18
// CHECK:STDOUT: call void @_CF.Main.d4b5665541d5d7a8(double %.loc57), !dbg !19
// CHECK:STDOUT: %.loc58_9 = load double, ptr %p.var, align 8, !dbg !20
// CHECK:STDOUT: %G.call.loc58 = call double @_CG.Main.3836ccc537683c19(double %.loc58_9), !dbg !21
// CHECK:STDOUT: store double %G.call.loc58, ptr %q.var, align 8, !dbg !22
// CHECK:STDOUT: %.loc54 = load i32, ptr %n.var, align 4, !dbg !13
// CHECK:STDOUT: call void @_CF.Main.b88d1103f417c6d4(i32 %.loc54), !dbg !14
// CHECK:STDOUT: %.loc55_9 = load i32, ptr %n.var, align 4, !dbg !15
// CHECK:STDOUT: %G.call.loc55 = call i32 @_CG.Main.de631560529e9861(i32 %.loc55_9), !dbg !16
// CHECK:STDOUT: store i32 %G.call.loc55, ptr %m.var, align 4, !dbg !17
// CHECK:STDOUT: %.loc56 = load double, ptr %p.var, align 8, !dbg !18
// CHECK:STDOUT: call void @_CF.Main.d4b5665541d5d7a8(double %.loc56), !dbg !19
// CHECK:STDOUT: %.loc57_9 = load double, ptr %p.var, align 8, !dbg !20
// CHECK:STDOUT: %G.call.loc57 = call double @_CG.Main.3836ccc537683c19(double %.loc57_9), !dbg !21
// CHECK:STDOUT: store double %G.call.loc57, ptr %q.var, align 8, !dbg !22
// CHECK:STDOUT: ret void, !dbg !23
// CHECK:STDOUT: }
// CHECK:STDOUT:
@@ -109,89 +108,122 @@ fn M() {
// CHECK:STDOUT:
// CHECK:STDOUT: define linkonce_odr i32 @_CG.Main.de631560529e9861(i32 %x) !dbg !26 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %var_f64.var = alloca double, align 8, !dbg !27
// CHECK:STDOUT: %ptr_i32.var = alloca ptr, align 8, !dbg !28
// CHECK:STDOUT: %ptr_f64.var = alloca ptr, align 8, !dbg !29
// CHECK:STDOUT: %ptr_i8.var = alloca ptr, align 8, !dbg !30
// CHECK:STDOUT: %c.var = alloca {}, align 8, !dbg !31
// CHECK:STDOUT: %H.call.loc29 = call i32 @_CH.Main.de631560529e9861(i32 %x), !dbg !32
// CHECK:STDOUT: %H.call.loc30 = call %type @_CH.Main.402deed6b8733082(%type zeroinitializer), !dbg !33
// CHECK:STDOUT: %G.call = call i32 @_CG.Main.de631560529e9861(i32 %x), !dbg !34
// CHECK:STDOUT: %H.call.loc31 = call i32 @_CH.Main.de631560529e9861(i32 %G.call), !dbg !35
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %var_f64.var), !dbg !27
// CHECK:STDOUT: %.loc35_5 = load double, ptr %var_f64.var, align 8, !dbg !36
// CHECK:STDOUT: %H.call.loc35 = call double @_CH.Main.3836ccc537683c19(double %.loc35_5), !dbg !37
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %ptr_i32.var), !dbg !28
// CHECK:STDOUT: %.loc37_5 = load ptr, ptr %ptr_i32.var, align 8, !dbg !38
// CHECK:STDOUT: %H.call.loc37 = call ptr @_CH.Main.a194de4a3b8dbd0c(ptr %.loc37_5), !dbg !39
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %ptr_f64.var), !dbg !29
// CHECK:STDOUT: %.loc39_5 = load ptr, ptr %ptr_f64.var, align 8, !dbg !40
// CHECK:STDOUT: %H.call.loc39 = call ptr @_CH.Main.a194de4a3b8dbd0c(ptr %.loc39_5), !dbg !41
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %ptr_i8.var), !dbg !30
// CHECK:STDOUT: %.loc41_5 = load ptr, ptr %ptr_i8.var, align 8, !dbg !42
// CHECK:STDOUT: %H.call.loc41 = call ptr @_CH.Main.a194de4a3b8dbd0c(ptr %.loc41_5), !dbg !43
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %c.var), !dbg !31
// CHECK:STDOUT: ret i32 %x, !dbg !44
// CHECK:STDOUT: %.loc29_6.3.temp = alloca i32, align 4, !dbg !27
// CHECK:STDOUT: %.loc31_8.3.temp = alloca i32, align 4, !dbg !28
// CHECK:STDOUT: %.loc31_9.3.temp = alloca i32, align 4, !dbg !29
// CHECK:STDOUT: %var_f64.var = alloca double, align 8, !dbg !30
// CHECK:STDOUT: %ptr_i32.var = alloca ptr, align 8, !dbg !31
// CHECK:STDOUT: %ptr_f64.var = alloca ptr, align 8, !dbg !32
// CHECK:STDOUT: %ptr_i8.var = alloca ptr, align 8, !dbg !33
// CHECK:STDOUT: %c.var = alloca {}, align 8, !dbg !34
// CHECK:STDOUT: %.loc43_6.3.temp = alloca {}, align 8, !dbg !35
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc29_6.3.temp), !dbg !27
// CHECK:STDOUT: %H.call.loc29 = call i32 @_CH.Main.de631560529e9861(i32 %x), !dbg !27
// CHECK:STDOUT: store i32 %H.call.loc29, ptr %.loc29_6.3.temp, align 4, !dbg !27
// CHECK:STDOUT: %H.call.loc30 = call %type @_CH.Main.402deed6b8733082(%type zeroinitializer), !dbg !36
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc31_8.3.temp), !dbg !28
// CHECK:STDOUT: %G.call = call i32 @_CG.Main.de631560529e9861(i32 %x), !dbg !28
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc31_9.3.temp), !dbg !29
// CHECK:STDOUT: store i32 %G.call, ptr %.loc31_8.3.temp, align 4, !dbg !28
// CHECK:STDOUT: %.loc31_8.5 = load i32, ptr %.loc31_8.3.temp, align 4, !dbg !28
// CHECK:STDOUT: %H.call.loc31 = call i32 @_CH.Main.de631560529e9861(i32 %.loc31_8.5), !dbg !29
// CHECK:STDOUT: store i32 %H.call.loc31, ptr %.loc31_9.3.temp, align 4, !dbg !29
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %var_f64.var), !dbg !30
// CHECK:STDOUT: %.loc35_5 = load double, ptr %var_f64.var, align 8, !dbg !37
// CHECK:STDOUT: %H.call.loc35 = call double @_CH.Main.3836ccc537683c19(double %.loc35_5), !dbg !38
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %ptr_i32.var), !dbg !31
// CHECK:STDOUT: %.loc37_5 = load ptr, ptr %ptr_i32.var, align 8, !dbg !39
// CHECK:STDOUT: %H.call.loc37 = call ptr @_CH.Main.a194de4a3b8dbd0c(ptr %.loc37_5), !dbg !40
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %ptr_f64.var), !dbg !32
// CHECK:STDOUT: %.loc39_5 = load ptr, ptr %ptr_f64.var, align 8, !dbg !41
// CHECK:STDOUT: %H.call.loc39 = call ptr @_CH.Main.a194de4a3b8dbd0c(ptr %.loc39_5), !dbg !42
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %ptr_i8.var), !dbg !33
// CHECK:STDOUT: %.loc41_5 = load ptr, ptr %ptr_i8.var, align 8, !dbg !43
// CHECK:STDOUT: %H.call.loc41 = call ptr @_CH.Main.a194de4a3b8dbd0c(ptr %.loc41_5), !dbg !44
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %c.var), !dbg !34
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc43_6.3.temp), !dbg !35
// CHECK:STDOUT: call void @_CH.Main.936d996ea935415c(ptr %.loc43_6.3.temp, ptr %c.var), !dbg !35
// CHECK:STDOUT: ret i32 %x, !dbg !45
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: define linkonce_odr void @_CF.Main.d4b5665541d5d7a8(double %x) !dbg !45 {
// CHECK:STDOUT: define linkonce_odr void @_CF.Main.d4b5665541d5d7a8(double %x) !dbg !46 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !46
// CHECK:STDOUT: ret void, !dbg !47
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: define linkonce_odr double @_CG.Main.3836ccc537683c19(double %x) !dbg !47 {
// CHECK:STDOUT: define linkonce_odr double @_CG.Main.3836ccc537683c19(double %x) !dbg !48 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %var_f64.var = alloca double, align 8, !dbg !48
// CHECK:STDOUT: %ptr_i32.var = alloca ptr, align 8, !dbg !49
// CHECK:STDOUT: %ptr_f64.var = alloca ptr, align 8, !dbg !50
// CHECK:STDOUT: %ptr_i8.var = alloca ptr, align 8, !dbg !51
// CHECK:STDOUT: %c.var = alloca {}, align 8, !dbg !52
// CHECK:STDOUT: %H.call.loc29 = call double @_CH.Main.3836ccc537683c19(double %x), !dbg !53
// CHECK:STDOUT: %H.call.loc30 = call %type @_CH.Main.402deed6b8733082(%type zeroinitializer), !dbg !54
// CHECK:STDOUT: %G.call = call double @_CG.Main.3836ccc537683c19(double %x), !dbg !55
// CHECK:STDOUT: %H.call.loc31 = call double @_CH.Main.3836ccc537683c19(double %G.call), !dbg !56
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %var_f64.var), !dbg !48
// CHECK:STDOUT: %.loc35_5 = load double, ptr %var_f64.var, align 8, !dbg !57
// CHECK:STDOUT: %H.call.loc35 = call double @_CH.Main.3836ccc537683c19(double %.loc35_5), !dbg !58
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %ptr_i32.var), !dbg !49
// CHECK:STDOUT: %.loc37_5 = load ptr, ptr %ptr_i32.var, align 8, !dbg !59
// CHECK:STDOUT: %H.call.loc37 = call ptr @_CH.Main.a194de4a3b8dbd0c(ptr %.loc37_5), !dbg !60
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %ptr_f64.var), !dbg !50
// CHECK:STDOUT: %.loc39_5 = load ptr, ptr %ptr_f64.var, align 8, !dbg !61
// CHECK:STDOUT: %H.call.loc39 = call ptr @_CH.Main.a194de4a3b8dbd0c(ptr %.loc39_5), !dbg !62
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %ptr_i8.var), !dbg !51
// CHECK:STDOUT: %.loc41_5 = load ptr, ptr %ptr_i8.var, align 8, !dbg !63
// CHECK:STDOUT: %H.call.loc41 = call ptr @_CH.Main.a194de4a3b8dbd0c(ptr %.loc41_5), !dbg !64
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %c.var), !dbg !52
// CHECK:STDOUT: ret double %x, !dbg !65
// CHECK:STDOUT: %.loc29_6.3.temp = alloca double, align 8, !dbg !49
// CHECK:STDOUT: %.loc31_8.3.temp = alloca double, align 8, !dbg !50
// CHECK:STDOUT: %.loc31_9.3.temp = alloca double, align 8, !dbg !51
// CHECK:STDOUT: %var_f64.var = alloca double, align 8, !dbg !52
// CHECK:STDOUT: %ptr_i32.var = alloca ptr, align 8, !dbg !53
// CHECK:STDOUT: %ptr_f64.var = alloca ptr, align 8, !dbg !54
// CHECK:STDOUT: %ptr_i8.var = alloca ptr, align 8, !dbg !55
// CHECK:STDOUT: %c.var = alloca {}, align 8, !dbg !56
// CHECK:STDOUT: %.loc43_6.3.temp = alloca {}, align 8, !dbg !57
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc29_6.3.temp), !dbg !49
// CHECK:STDOUT: %H.call.loc29 = call double @_CH.Main.3836ccc537683c19(double %x), !dbg !49
// CHECK:STDOUT: store double %H.call.loc29, ptr %.loc29_6.3.temp, align 8, !dbg !49
// CHECK:STDOUT: %H.call.loc30 = call %type @_CH.Main.402deed6b8733082(%type zeroinitializer), !dbg !58
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc31_8.3.temp), !dbg !50
// CHECK:STDOUT: %G.call = call double @_CG.Main.3836ccc537683c19(double %x), !dbg !50
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc31_9.3.temp), !dbg !51
// CHECK:STDOUT: store double %G.call, ptr %.loc31_8.3.temp, align 8, !dbg !50
// CHECK:STDOUT: %.loc31_8.5 = load double, ptr %.loc31_8.3.temp, align 8, !dbg !50
// CHECK:STDOUT: %H.call.loc31 = call double @_CH.Main.3836ccc537683c19(double %.loc31_8.5), !dbg !51
// CHECK:STDOUT: store double %H.call.loc31, ptr %.loc31_9.3.temp, align 8, !dbg !51
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %var_f64.var), !dbg !52
// CHECK:STDOUT: %.loc35_5 = load double, ptr %var_f64.var, align 8, !dbg !59
// CHECK:STDOUT: %H.call.loc35 = call double @_CH.Main.3836ccc537683c19(double %.loc35_5), !dbg !60
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %ptr_i32.var), !dbg !53
// CHECK:STDOUT: %.loc37_5 = load ptr, ptr %ptr_i32.var, align 8, !dbg !61
// CHECK:STDOUT: %H.call.loc37 = call ptr @_CH.Main.a194de4a3b8dbd0c(ptr %.loc37_5), !dbg !62
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %ptr_f64.var), !dbg !54
// CHECK:STDOUT: %.loc39_5 = load ptr, ptr %ptr_f64.var, align 8, !dbg !63
// CHECK:STDOUT: %H.call.loc39 = call ptr @_CH.Main.a194de4a3b8dbd0c(ptr %.loc39_5), !dbg !64
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %ptr_i8.var), !dbg !55
// CHECK:STDOUT: %.loc41_5 = load ptr, ptr %ptr_i8.var, align 8, !dbg !65
// CHECK:STDOUT: %H.call.loc41 = call ptr @_CH.Main.a194de4a3b8dbd0c(ptr %.loc41_5), !dbg !66
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %c.var), !dbg !56
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc43_6.3.temp), !dbg !57
// CHECK:STDOUT: call void @_CH.Main.936d996ea935415c(ptr %.loc43_6.3.temp, ptr %c.var), !dbg !57
// CHECK:STDOUT: ret double %x, !dbg !67
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: define linkonce_odr i32 @_CH.Main.de631560529e9861(i32 %x) !dbg !66 {
// CHECK:STDOUT: define linkonce_odr i32 @_CH.Main.de631560529e9861(i32 %x) !dbg !68 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret i32 %x, !dbg !67
// CHECK:STDOUT: ret i32 %x, !dbg !69
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: define linkonce_odr %type @_CH.Main.402deed6b8733082(%type %x) !dbg !68 {
// CHECK:STDOUT: define linkonce_odr %type @_CH.Main.402deed6b8733082(%type %x) !dbg !70 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret %type %x, !dbg !69
// CHECK:STDOUT: ret %type %x, !dbg !71
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: define linkonce_odr double @_CH.Main.3836ccc537683c19(double %x) !dbg !70 {
// CHECK:STDOUT: define linkonce_odr double @_CH.Main.3836ccc537683c19(double %x) !dbg !72 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret double %x, !dbg !71
// CHECK:STDOUT: ret double %x, !dbg !73
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: define linkonce_odr ptr @_CH.Main.a194de4a3b8dbd0c(ptr %x) !dbg !72 {
// CHECK:STDOUT: define linkonce_odr ptr @_CH.Main.a194de4a3b8dbd0c(ptr %x) !dbg !74 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret ptr %x, !dbg !73
// CHECK:STDOUT: ret ptr %x, !dbg !75
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: define linkonce_odr void @_CH.Main.936d996ea935415c(ptr sret({}) %return, ptr %x) !dbg !76 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @"_COp.C.Main:Copy.Core"(ptr %return, ptr %x), !dbg !77
// CHECK:STDOUT: ret void, !dbg !78
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 13, 12, 11, 10 }
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 21, 20, 19, 18 }
// CHECK:STDOUT: uselistorder ptr @_CH.Main.de631560529e9861, { 1, 0 }
// CHECK:STDOUT: uselistorder ptr @_CH.Main.402deed6b8733082, { 1, 0 }
// CHECK:STDOUT: uselistorder ptr @_CH.Main.3836ccc537683c19, { 3, 2, 1, 0 }
// CHECK:STDOUT: uselistorder ptr @_CH.Main.a194de4a3b8dbd0c, { 5, 2, 0, 4, 3, 1 }
// CHECK:STDOUT: uselistorder ptr @_CH.Main.936d996ea935415c, { 1, 0 }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT: attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
@@ -207,69 +239,74 @@ fn M() {
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{}
// CHECK:STDOUT: !7 = !DILocation(line: 15, column: 35, scope: !4)
// CHECK:STDOUT: !8 = distinct !DISubprogram(name: "M", linkageName: "_CM.Main", scope: null, file: !3, line: 49, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !9 = !DILocation(line: 50, column: 3, scope: !8)
// CHECK:STDOUT: !10 = !DILocation(line: 51, column: 3, scope: !8)
// CHECK:STDOUT: !11 = !DILocation(line: 52, column: 3, scope: !8)
// CHECK:STDOUT: !12 = !DILocation(line: 53, column: 3, scope: !8)
// CHECK:STDOUT: !13 = !DILocation(line: 55, column: 5, scope: !8)
// CHECK:STDOUT: !14 = !DILocation(line: 55, column: 3, scope: !8)
// CHECK:STDOUT: !15 = !DILocation(line: 56, column: 9, scope: !8)
// CHECK:STDOUT: !16 = !DILocation(line: 56, column: 7, scope: !8)
// CHECK:STDOUT: !17 = !DILocation(line: 56, column: 3, scope: !8)
// CHECK:STDOUT: !18 = !DILocation(line: 57, column: 5, scope: !8)
// CHECK:STDOUT: !19 = !DILocation(line: 57, column: 3, scope: !8)
// CHECK:STDOUT: !20 = !DILocation(line: 58, column: 9, scope: !8)
// CHECK:STDOUT: !21 = !DILocation(line: 58, column: 7, scope: !8)
// CHECK:STDOUT: !22 = !DILocation(line: 58, column: 3, scope: !8)
// CHECK:STDOUT: !23 = !DILocation(line: 49, column: 1, scope: !8)
// CHECK:STDOUT: !8 = distinct !DISubprogram(name: "M", linkageName: "_CM.Main", scope: null, file: !3, line: 48, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !9 = !DILocation(line: 49, column: 3, scope: !8)
// CHECK:STDOUT: !10 = !DILocation(line: 50, column: 3, scope: !8)
// CHECK:STDOUT: !11 = !DILocation(line: 51, column: 3, scope: !8)
// CHECK:STDOUT: !12 = !DILocation(line: 52, column: 3, scope: !8)
// CHECK:STDOUT: !13 = !DILocation(line: 54, column: 5, scope: !8)
// CHECK:STDOUT: !14 = !DILocation(line: 54, column: 3, scope: !8)
// CHECK:STDOUT: !15 = !DILocation(line: 55, column: 9, scope: !8)
// CHECK:STDOUT: !16 = !DILocation(line: 55, column: 7, scope: !8)
// CHECK:STDOUT: !17 = !DILocation(line: 55, column: 3, scope: !8)
// CHECK:STDOUT: !18 = !DILocation(line: 56, column: 5, scope: !8)
// CHECK:STDOUT: !19 = !DILocation(line: 56, column: 3, scope: !8)
// CHECK:STDOUT: !20 = !DILocation(line: 57, column: 9, scope: !8)
// CHECK:STDOUT: !21 = !DILocation(line: 57, column: 7, scope: !8)
// CHECK:STDOUT: !22 = !DILocation(line: 57, column: 3, scope: !8)
// CHECK:STDOUT: !23 = !DILocation(line: 48, column: 1, scope: !8)
// CHECK:STDOUT: !24 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main.b88d1103f417c6d4", scope: null, file: !3, line: 19, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !25 = !DILocation(line: 19, column: 1, scope: !24)
// CHECK:STDOUT: !26 = distinct !DISubprogram(name: "G", linkageName: "_CG.Main.de631560529e9861", scope: null, file: !3, line: 28, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !27 = !DILocation(line: 34, column: 3, scope: !26)
// CHECK:STDOUT: !28 = !DILocation(line: 36, column: 3, scope: !26)
// CHECK:STDOUT: !29 = !DILocation(line: 38, column: 3, scope: !26)
// CHECK:STDOUT: !30 = !DILocation(line: 40, column: 3, scope: !26)
// CHECK:STDOUT: !31 = !DILocation(line: 42, column: 3, scope: !26)
// CHECK:STDOUT: !32 = !DILocation(line: 29, column: 3, scope: !26)
// CHECK:STDOUT: !33 = !DILocation(line: 30, column: 3, scope: !26)
// CHECK:STDOUT: !34 = !DILocation(line: 31, column: 5, scope: !26)
// CHECK:STDOUT: !35 = !DILocation(line: 31, column: 3, scope: !26)
// CHECK:STDOUT: !36 = !DILocation(line: 35, column: 5, scope: !26)
// CHECK:STDOUT: !37 = !DILocation(line: 35, column: 3, scope: !26)
// CHECK:STDOUT: !38 = !DILocation(line: 37, column: 5, scope: !26)
// CHECK:STDOUT: !39 = !DILocation(line: 37, column: 3, scope: !26)
// CHECK:STDOUT: !40 = !DILocation(line: 39, column: 5, scope: !26)
// CHECK:STDOUT: !41 = !DILocation(line: 39, column: 3, scope: !26)
// CHECK:STDOUT: !42 = !DILocation(line: 41, column: 5, scope: !26)
// CHECK:STDOUT: !43 = !DILocation(line: 41, column: 3, scope: !26)
// CHECK:STDOUT: !44 = !DILocation(line: 46, column: 3, scope: !26)
// CHECK:STDOUT: !45 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main.d4b5665541d5d7a8", scope: null, file: !3, line: 19, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !46 = !DILocation(line: 19, column: 1, scope: !45)
// CHECK:STDOUT: !47 = distinct !DISubprogram(name: "G", linkageName: "_CG.Main.3836ccc537683c19", scope: null, file: !3, line: 28, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !48 = !DILocation(line: 34, column: 3, scope: !47)
// CHECK:STDOUT: !49 = !DILocation(line: 36, column: 3, scope: !47)
// CHECK:STDOUT: !50 = !DILocation(line: 38, column: 3, scope: !47)
// CHECK:STDOUT: !51 = !DILocation(line: 40, column: 3, scope: !47)
// CHECK:STDOUT: !52 = !DILocation(line: 42, column: 3, scope: !47)
// CHECK:STDOUT: !53 = !DILocation(line: 29, column: 3, scope: !47)
// CHECK:STDOUT: !54 = !DILocation(line: 30, column: 3, scope: !47)
// CHECK:STDOUT: !55 = !DILocation(line: 31, column: 5, scope: !47)
// CHECK:STDOUT: !56 = !DILocation(line: 31, column: 3, scope: !47)
// CHECK:STDOUT: !57 = !DILocation(line: 35, column: 5, scope: !47)
// CHECK:STDOUT: !58 = !DILocation(line: 35, column: 3, scope: !47)
// CHECK:STDOUT: !59 = !DILocation(line: 37, column: 5, scope: !47)
// CHECK:STDOUT: !60 = !DILocation(line: 37, column: 3, scope: !47)
// CHECK:STDOUT: !61 = !DILocation(line: 39, column: 5, scope: !47)
// CHECK:STDOUT: !62 = !DILocation(line: 39, column: 3, scope: !47)
// CHECK:STDOUT: !63 = !DILocation(line: 41, column: 5, scope: !47)
// CHECK:STDOUT: !64 = !DILocation(line: 41, column: 3, scope: !47)
// CHECK:STDOUT: !65 = !DILocation(line: 46, column: 3, scope: !47)
// CHECK:STDOUT: !66 = distinct !DISubprogram(name: "H", linkageName: "_CH.Main.de631560529e9861", scope: null, file: !3, line: 22, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !67 = !DILocation(line: 23, column: 3, scope: !66)
// CHECK:STDOUT: !68 = distinct !DISubprogram(name: "H", linkageName: "_CH.Main.402deed6b8733082", scope: null, file: !3, line: 22, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !27 = !DILocation(line: 29, column: 3, scope: !26)
// CHECK:STDOUT: !28 = !DILocation(line: 31, column: 5, scope: !26)
// CHECK:STDOUT: !29 = !DILocation(line: 31, column: 3, scope: !26)
// CHECK:STDOUT: !30 = !DILocation(line: 34, column: 3, scope: !26)
// CHECK:STDOUT: !31 = !DILocation(line: 36, column: 3, scope: !26)
// CHECK:STDOUT: !32 = !DILocation(line: 38, column: 3, scope: !26)
// CHECK:STDOUT: !33 = !DILocation(line: 40, column: 3, scope: !26)
// CHECK:STDOUT: !34 = !DILocation(line: 42, column: 3, scope: !26)
// CHECK:STDOUT: !35 = !DILocation(line: 43, column: 3, scope: !26)
// CHECK:STDOUT: !36 = !DILocation(line: 30, column: 3, scope: !26)
// CHECK:STDOUT: !37 = !DILocation(line: 35, column: 5, scope: !26)
// CHECK:STDOUT: !38 = !DILocation(line: 35, column: 3, scope: !26)
// CHECK:STDOUT: !39 = !DILocation(line: 37, column: 5, scope: !26)
// CHECK:STDOUT: !40 = !DILocation(line: 37, column: 3, scope: !26)
// CHECK:STDOUT: !41 = !DILocation(line: 39, column: 5, scope: !26)
// CHECK:STDOUT: !42 = !DILocation(line: 39, column: 3, scope: !26)
// CHECK:STDOUT: !43 = !DILocation(line: 41, column: 5, scope: !26)
// CHECK:STDOUT: !44 = !DILocation(line: 41, column: 3, scope: !26)
// CHECK:STDOUT: !45 = !DILocation(line: 45, column: 3, scope: !26)
// CHECK:STDOUT: !46 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main.d4b5665541d5d7a8", scope: null, file: !3, line: 19, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !47 = !DILocation(line: 19, column: 1, scope: !46)
// CHECK:STDOUT: !48 = distinct !DISubprogram(name: "G", linkageName: "_CG.Main.3836ccc537683c19", scope: null, file: !3, line: 28, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !49 = !DILocation(line: 29, column: 3, scope: !48)
// CHECK:STDOUT: !50 = !DILocation(line: 31, column: 5, scope: !48)
// CHECK:STDOUT: !51 = !DILocation(line: 31, column: 3, scope: !48)
// CHECK:STDOUT: !52 = !DILocation(line: 34, column: 3, scope: !48)
// CHECK:STDOUT: !53 = !DILocation(line: 36, column: 3, scope: !48)
// CHECK:STDOUT: !54 = !DILocation(line: 38, column: 3, scope: !48)
// CHECK:STDOUT: !55 = !DILocation(line: 40, column: 3, scope: !48)
// CHECK:STDOUT: !56 = !DILocation(line: 42, column: 3, scope: !48)
// CHECK:STDOUT: !57 = !DILocation(line: 43, column: 3, scope: !48)
// CHECK:STDOUT: !58 = !DILocation(line: 30, column: 3, scope: !48)
// CHECK:STDOUT: !59 = !DILocation(line: 35, column: 5, scope: !48)
// CHECK:STDOUT: !60 = !DILocation(line: 35, column: 3, scope: !48)
// CHECK:STDOUT: !61 = !DILocation(line: 37, column: 5, scope: !48)
// CHECK:STDOUT: !62 = !DILocation(line: 37, column: 3, scope: !48)
// CHECK:STDOUT: !63 = !DILocation(line: 39, column: 5, scope: !48)
// CHECK:STDOUT: !64 = !DILocation(line: 39, column: 3, scope: !48)
// CHECK:STDOUT: !65 = !DILocation(line: 41, column: 5, scope: !48)
// CHECK:STDOUT: !66 = !DILocation(line: 41, column: 3, scope: !48)
// CHECK:STDOUT: !67 = !DILocation(line: 45, column: 3, scope: !48)
// CHECK:STDOUT: !68 = distinct !DISubprogram(name: "H", linkageName: "_CH.Main.de631560529e9861", scope: null, file: !3, line: 22, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !69 = !DILocation(line: 23, column: 3, scope: !68)
// CHECK:STDOUT: !70 = distinct !DISubprogram(name: "H", linkageName: "_CH.Main.3836ccc537683c19", scope: null, file: !3, line: 22, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !70 = distinct !DISubprogram(name: "H", linkageName: "_CH.Main.402deed6b8733082", scope: null, file: !3, line: 22, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !71 = !DILocation(line: 23, column: 3, scope: !70)
// CHECK:STDOUT: !72 = distinct !DISubprogram(name: "H", linkageName: "_CH.Main.a194de4a3b8dbd0c", scope: null, file: !3, line: 22, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !72 = distinct !DISubprogram(name: "H", linkageName: "_CH.Main.3836ccc537683c19", scope: null, file: !3, line: 22, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !73 = !DILocation(line: 23, column: 3, scope: !72)
// CHECK:STDOUT: !74 = distinct !DISubprogram(name: "H", linkageName: "_CH.Main.a194de4a3b8dbd0c", scope: null, file: !3, line: 22, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !75 = !DILocation(line: 23, column: 3, scope: !74)
// CHECK:STDOUT: !76 = distinct !DISubprogram(name: "H", linkageName: "_CH.Main.936d996ea935415c", scope: null, file: !3, line: 22, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !77 = !DILocation(line: 23, column: 10, scope: !76)
// CHECK:STDOUT: !78 = !DILocation(line: 23, column: 3, scope: !76)