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Superficial support for exporting complete class types to C++. (#7029)

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We don't yet populate the bases or fields, so the class types show up as
empty classes in C++ for now. But we do allow calls to static member
functions.
This commit is contained in:
Richard Smith
2026-04-08 19:29:25 +00:00
committed by GitHub
parent 9f1a0c816c
commit b74e0d1260
7 changed files with 417 additions and 37 deletions
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toolchain/lower/testdata/interop/cpp/reverse/function.carbon
Vendored
+10 -10
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@@ -124,22 +124,22 @@ fn H() { Cpp.G2(); }
// CHECK:STDOUT: ; Function Attrs: mustprogress uwtable
// CHECK:STDOUT: define dso_local void @_Z1Gv() #0 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @_ZL17NoArgs__cpp_thunkv()
// CHECK:STDOUT: call void @_ZL18BoolArg__cpp_thunkb(i1 noundef zeroext true)
// CHECK:STDOUT: call void @_ZL17IntArg__cpp_thunki(i32 noundef 123)
// CHECK:STDOUT: call void @_ZL19FloatArg__cpp_thunkf(float noundef 1.500000e+00)
// CHECK:STDOUT: call void @_ZN6Carbon5OtherL17NoArgs__cpp_thunkEv()
// CHECK:STDOUT: call void @_ZN6Carbon5OtherL18BoolArg__cpp_thunkEb(i1 noundef zeroext true)
// CHECK:STDOUT: call void @_ZN6Carbon5OtherL17IntArg__cpp_thunkEi(i32 noundef 123)
// CHECK:STDOUT: call void @_ZN6Carbon5OtherL19FloatArg__cpp_thunkEf(float noundef 1.500000e+00)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress nounwind uwtable
// CHECK:STDOUT: define internal void @_ZL17NoArgs__cpp_thunkv() #1 {
// CHECK:STDOUT: define internal void @_ZN6Carbon5OtherL17NoArgs__cpp_thunkEv() #1 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @_CNoArgs__carbon_thunk.Other()
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress nounwind uwtable
// CHECK:STDOUT: define internal void @_ZL18BoolArg__cpp_thunkb(i1 noundef zeroext %0) #1 {
// CHECK:STDOUT: define internal void @_ZN6Carbon5OtherL18BoolArg__cpp_thunkEb(i1 noundef zeroext %0) #1 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.addr = alloca i8, align 1
// CHECK:STDOUT: %storedv = zext i1 %0 to i8
@@ -149,7 +149,7 @@ fn H() { Cpp.G2(); }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress nounwind uwtable
// CHECK:STDOUT: define internal void @_ZL17IntArg__cpp_thunki(i32 noundef %0) #1 {
// CHECK:STDOUT: define internal void @_ZN6Carbon5OtherL17IntArg__cpp_thunkEi(i32 noundef %0) #1 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.addr = alloca i32, align 4
// CHECK:STDOUT: store i32 %0, ptr %.addr, align 4, !tbaa !7
@@ -158,7 +158,7 @@ fn H() { Cpp.G2(); }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress nounwind uwtable
// CHECK:STDOUT: define internal void @_ZL19FloatArg__cpp_thunkf(float noundef %0) #1 {
// CHECK:STDOUT: define internal void @_ZN6Carbon5OtherL19FloatArg__cpp_thunkEf(float noundef %0) #1 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.addr = alloca float, align 4
// CHECK:STDOUT: store float %0, ptr %.addr, align 4, !tbaa !13
@@ -291,12 +291,12 @@ fn H() { Cpp.G2(); }
// CHECK:STDOUT: ; Function Attrs: inlinehint mustprogress uwtable
// CHECK:STDOUT: define linkonce_odr dso_local void @_Z2G1v() #1 comdat {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @_ZL12F__cpp_thunkv()
// CHECK:STDOUT: call void @_ZN6CarbonL12F__cpp_thunkEv()
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress nounwind uwtable
// CHECK:STDOUT: define internal void @_ZL12F__cpp_thunkv() #2 {
// CHECK:STDOUT: define internal void @_ZN6CarbonL12F__cpp_thunkEv() #2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @_CF__carbon_thunk.Main()
// CHECK:STDOUT: ret void