compiler: fix type names for generic named structs

Without this change, the compiler would probably have worked just fine
but the generated types would look odd.

You can see in the test case that it now doesn't use `main.Point` but
rather the correct `main.Poin[float32]` etc.

Author: aykevl

compiler/compiler.go

@@ -393,7 +393,7 @@ func (c *compilerContext) makeLLVMType(goType types.Type) llvm.Type {
 			// in LLVM IR, named structs are implemented as named structs in
 			// LLVM. This is because it is otherwise impossible to create
 			// self-referencing types such as linked lists.
-			llvmName := typ.Obj().Pkg().Path() + "." + typ.Obj().Name()
+			llvmName := typ.String()
 			llvmType := c.ctx.StructCreateNamed(llvmName)
 			c.llvmTypes.Set(goType, llvmType) // avoid infinite recursion
 			underlying := c.getLLVMType(st)

compiler/testdata/generics.go

@@ -18,4 +18,7 @@ func Add[T Coord](a, b Point[T]) Point[T] {
 func main() {
 	var af, bf Point[float32]
 	Add(af, bf)
+
+	var ai, bi Point[int]
+	Add(ai, bi)
 }

compiler/testdata/generics.ll

@@ -3,7 +3,8 @@ source_filename = "generics.go"
 target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
-%main.Point = type { float, float }
+%"main.Point[int]" = type { i32, i32 }
+%"main.Point[float32]" = type { float, float }
 
 declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*) #0
 
@@ -18,73 +19,96 @@ entry:
 ; Function Attrs: nounwind
 define hidden void @main.main(i8* %context) unnamed_addr #1 {
 entry:
-  %bf = alloca %main.Point, align 8
-  %af = alloca %main.Point, align 8
-  %af.repack = getelementptr inbounds %main.Point, %main.Point* %af, i32 0, i32 0
+  %bi = alloca %"main.Point[int]", align 8
+  %ai = alloca %"main.Point[int]", align 8
+  %bf = alloca %"main.Point[float32]", align 8
+  %af = alloca %"main.Point[float32]", align 8
+  %af.repack = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %af, i32 0, i32 0
   store float 0.000000e+00, float* %af.repack, align 8
-  %af.repack1 = getelementptr inbounds %main.Point, %main.Point* %af, i32 0, i32 1
+  %af.repack1 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %af, i32 0, i32 1
   store float 0.000000e+00, float* %af.repack1, align 4
-  %0 = bitcast %main.Point* %af to i8*
+  %0 = bitcast %"main.Point[float32]"* %af to i8*
   call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #2
-  %bf.repack = getelementptr inbounds %main.Point, %main.Point* %bf, i32 0, i32 0
+  %bf.repack = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %bf, i32 0, i32 0
   store float 0.000000e+00, float* %bf.repack, align 8
-  %bf.repack2 = getelementptr inbounds %main.Point, %main.Point* %bf, i32 0, i32 1
+  %bf.repack2 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %bf, i32 0, i32 1
   store float 0.000000e+00, float* %bf.repack2, align 4
-  %1 = bitcast %main.Point* %bf to i8*
+  %1 = bitcast %"main.Point[float32]"* %bf to i8*
   call void @runtime.trackPointer(i8* nonnull %1, i8* undef) #2
-  %.elt = getelementptr inbounds %main.Point, %main.Point* %af, i32 0, i32 0
+  %.elt = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %af, i32 0, i32 0
   %.unpack = load float, float* %.elt, align 8
-  %.elt3 = getelementptr inbounds %main.Point, %main.Point* %af, i32 0, i32 1
+  %.elt3 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %af, i32 0, i32 1
   %.unpack4 = load float, float* %.elt3, align 4
-  %.elt5 = getelementptr inbounds %main.Point, %main.Point* %bf, i32 0, i32 0
+  %.elt5 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %bf, i32 0, i32 0
   %.unpack6 = load float, float* %.elt5, align 8
-  %.elt7 = getelementptr inbounds %main.Point, %main.Point* %bf, i32 0, i32 1
+  %.elt7 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %bf, i32 0, i32 1
   %.unpack8 = load float, float* %.elt7, align 4
-  %2 = call %main.Point @"main.Add[float32]"(float %.unpack, float %.unpack4, float %.unpack6, float %.unpack8, i8* undef)
+  %2 = call %"main.Point[float32]" @"main.Add[float32]"(float %.unpack, float %.unpack4, float %.unpack6, float %.unpack8, i8* undef)
+  %ai.repack = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %ai, i32 0, i32 0
+  store i32 0, i32* %ai.repack, align 8
+  %ai.repack9 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %ai, i32 0, i32 1
+  store i32 0, i32* %ai.repack9, align 4
+  %3 = bitcast %"main.Point[int]"* %ai to i8*
+  call void @runtime.trackPointer(i8* nonnull %3, i8* undef) #2
+  %bi.repack = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %bi, i32 0, i32 0
+  store i32 0, i32* %bi.repack, align 8
+  %bi.repack10 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %bi, i32 0, i32 1
+  store i32 0, i32* %bi.repack10, align 4
+  %4 = bitcast %"main.Point[int]"* %bi to i8*
+  call void @runtime.trackPointer(i8* nonnull %4, i8* undef) #2
+  %.elt11 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %ai, i32 0, i32 0
+  %.unpack12 = load i32, i32* %.elt11, align 8
+  %.elt13 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %ai, i32 0, i32 1
+  %.unpack14 = load i32, i32* %.elt13, align 4
+  %.elt15 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %bi, i32 0, i32 0
+  %.unpack16 = load i32, i32* %.elt15, align 8
+  %.elt17 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %bi, i32 0, i32 1
+  %.unpack18 = load i32, i32* %.elt17, align 4
+  %5 = call %"main.Point[int]" @"main.Add[int]"(i32 %.unpack12, i32 %.unpack14, i32 %.unpack16, i32 %.unpack18, i8* undef)
   ret void
 }
 
 ; Function Attrs: nounwind
-define linkonce_odr hidden %main.Point @"main.Add[float32]"(float %a.X, float %a.Y, float %b.X, float %b.Y, i8* %context) unnamed_addr #1 {
+define linkonce_odr hidden %"main.Point[float32]" @"main.Add[float32]"(float %a.X, float %a.Y, float %b.X, float %b.Y, i8* %context) unnamed_addr #1 {
 entry:
-  %complit = alloca %main.Point, align 8
-  %b = alloca %main.Point, align 8
-  %a = alloca %main.Point, align 8
-  %a.repack = getelementptr inbounds %main.Point, %main.Point* %a, i32 0, i32 0
+  %complit = alloca %"main.Point[float32]", align 8
+  %b = alloca %"main.Point[float32]", align 8
+  %a = alloca %"main.Point[float32]", align 8
+  %a.repack = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %a, i32 0, i32 0
   store float 0.000000e+00, float* %a.repack, align 8
-  %a.repack9 = getelementptr inbounds %main.Point, %main.Point* %a, i32 0, i32 1
+  %a.repack9 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %a, i32 0, i32 1
   store float 0.000000e+00, float* %a.repack9, align 4
-  %0 = bitcast %main.Point* %a to i8*
+  %0 = bitcast %"main.Point[float32]"* %a to i8*
   call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #2
-  %a.repack10 = getelementptr inbounds %main.Point, %main.Point* %a, i32 0, i32 0
+  %a.repack10 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %a, i32 0, i32 0
   store float %a.X, float* %a.repack10, align 8
-  %a.repack11 = getelementptr inbounds %main.Point, %main.Point* %a, i32 0, i32 1
+  %a.repack11 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %a, i32 0, i32 1
   store float %a.Y, float* %a.repack11, align 4
-  %b.repack = getelementptr inbounds %main.Point, %main.Point* %b, i32 0, i32 0
+  %b.repack = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %b, i32 0, i32 0
   store float 0.000000e+00, float* %b.repack, align 8
-  %b.repack13 = getelementptr inbounds %main.Point, %main.Point* %b, i32 0, i32 1
+  %b.repack13 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %b, i32 0, i32 1
   store float 0.000000e+00, float* %b.repack13, align 4
-  %1 = bitcast %main.Point* %b to i8*
+  %1 = bitcast %"main.Point[float32]"* %b to i8*
   call void @runtime.trackPointer(i8* nonnull %1, i8* undef) #2
-  %b.repack14 = getelementptr inbounds %main.Point, %main.Point* %b, i32 0, i32 0
+  %b.repack14 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %b, i32 0, i32 0
   store float %b.X, float* %b.repack14, align 8
-  %b.repack15 = getelementptr inbounds %main.Point, %main.Point* %b, i32 0, i32 1
+  %b.repack15 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %b, i32 0, i32 1
   store float %b.Y, float* %b.repack15, align 4
-  %complit.repack = getelementptr inbounds %main.Point, %main.Point* %complit, i32 0, i32 0
+  %complit.repack = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %complit, i32 0, i32 0
   store float 0.000000e+00, float* %complit.repack, align 8
-  %complit.repack17 = getelementptr inbounds %main.Point, %main.Point* %complit, i32 0, i32 1
+  %complit.repack17 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %complit, i32 0, i32 1
   store float 0.000000e+00, float* %complit.repack17, align 4
-  %2 = bitcast %main.Point* %complit to i8*
+  %2 = bitcast %"main.Point[float32]"* %complit to i8*
   call void @runtime.trackPointer(i8* nonnull %2, i8* undef) #2
-  %3 = getelementptr inbounds %main.Point, %main.Point* %complit, i32 0, i32 0
+  %3 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %complit, i32 0, i32 0
   br i1 false, label %deref.throw, label %deref.next
 
 deref.next:                                       ; preds = %entry
   br i1 false, label %deref.throw1, label %deref.next2
 
 deref.next2:                                      ; preds = %deref.next
-  %4 = getelementptr inbounds %main.Point, %main.Point* %b, i32 0, i32 0
-  %5 = getelementptr inbounds %main.Point, %main.Point* %a, i32 0, i32 0
+  %4 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %b, i32 0, i32 0
+  %5 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %a, i32 0, i32 0
   %6 = load float, float* %5, align 8
   %7 = load float, float* %4, align 8
   %8 = fadd float %6, %7
@@ -94,8 +118,8 @@ deref.next4:                                      ; preds = %deref.next2
   br i1 false, label %deref.throw5, label %deref.next6
 
 deref.next6:                                      ; preds = %deref.next4
-  %9 = getelementptr inbounds %main.Point, %main.Point* %b, i32 0, i32 1
-  %10 = getelementptr inbounds %main.Point, %main.Point* %a, i32 0, i32 1
+  %9 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %b, i32 0, i32 1
+  %10 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %a, i32 0, i32 1
   %11 = load float, float* %10, align 4
   %12 = load float, float* %9, align 4
   br i1 false, label %store.throw, label %store.next
@@ -105,14 +129,14 @@ store.next:                                       ; preds = %deref.next6
   br i1 false, label %store.throw7, label %store.next8
 
 store.next8:                                      ; preds = %store.next
-  %13 = getelementptr inbounds %main.Point, %main.Point* %complit, i32 0, i32 1
+  %13 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %complit, i32 0, i32 1
   %14 = fadd float %11, %12
   store float %14, float* %13, align 4
-  %.elt = getelementptr inbounds %main.Point, %main.Point* %complit, i32 0, i32 0
+  %.elt = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %complit, i32 0, i32 0
   %.unpack = load float, float* %.elt, align 8
-  %15 = insertvalue %main.Point undef, float %.unpack, 0
-  %16 = insertvalue %main.Point %15, float %14, 1
-  ret %main.Point %16
+  %15 = insertvalue %"main.Point[float32]" undef, float %.unpack, 0
+  %16 = insertvalue %"main.Point[float32]" %15, float %14, 1
+  ret %"main.Point[float32]" %16
 
 deref.throw:                                      ; preds = %entry
   unreachable
@@ -135,6 +159,95 @@ store.throw7:                                     ; preds = %store.next
 
 declare void @runtime.nilPanic(i8*) #0
 
+; Function Attrs: nounwind
+define linkonce_odr hidden %"main.Point[int]" @"main.Add[int]"(i32 %a.X, i32 %a.Y, i32 %b.X, i32 %b.Y, i8* %context) unnamed_addr #1 {
+entry:
+  %complit = alloca %"main.Point[int]", align 8
+  %b = alloca %"main.Point[int]", align 8
+  %a = alloca %"main.Point[int]", align 8
+  %a.repack = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %a, i32 0, i32 0
+  store i32 0, i32* %a.repack, align 8
+  %a.repack9 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %a, i32 0, i32 1
+  store i32 0, i32* %a.repack9, align 4
+  %0 = bitcast %"main.Point[int]"* %a to i8*
+  call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #2
+  %a.repack10 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %a, i32 0, i32 0
+  store i32 %a.X, i32* %a.repack10, align 8
+  %a.repack11 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %a, i32 0, i32 1
+  store i32 %a.Y, i32* %a.repack11, align 4
+  %b.repack = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %b, i32 0, i32 0
+  store i32 0, i32* %b.repack, align 8
+  %b.repack13 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %b, i32 0, i32 1
+  store i32 0, i32* %b.repack13, align 4
+  %1 = bitcast %"main.Point[int]"* %b to i8*
+  call void @runtime.trackPointer(i8* nonnull %1, i8* undef) #2
+  %b.repack14 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %b, i32 0, i32 0
+  store i32 %b.X, i32* %b.repack14, align 8
+  %b.repack15 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %b, i32 0, i32 1
+  store i32 %b.Y, i32* %b.repack15, align 4
+  %complit.repack = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %complit, i32 0, i32 0
+  store i32 0, i32* %complit.repack, align 8
+  %complit.repack17 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %complit, i32 0, i32 1
+  store i32 0, i32* %complit.repack17, align 4
+  %2 = bitcast %"main.Point[int]"* %complit to i8*
+  call void @runtime.trackPointer(i8* nonnull %2, i8* undef) #2
+  %3 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %complit, i32 0, i32 0
+  br i1 false, label %deref.throw, label %deref.next
+
+deref.next:                                       ; preds = %entry
+  br i1 false, label %deref.throw1, label %deref.next2
+
+deref.next2:                                      ; preds = %deref.next
+  %4 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %b, i32 0, i32 0
+  %5 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %a, i32 0, i32 0
+  %6 = load i32, i32* %5, align 8
+  %7 = load i32, i32* %4, align 8
+  %8 = add i32 %6, %7
+  br i1 false, label %deref.throw3, label %deref.next4
+
+deref.next4:                                      ; preds = %deref.next2
+  br i1 false, label %deref.throw5, label %deref.next6
+
+deref.next6:                                      ; preds = %deref.next4
+  %9 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %b, i32 0, i32 1
+  %10 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %a, i32 0, i32 1
+  %11 = load i32, i32* %10, align 4
+  %12 = load i32, i32* %9, align 4
+  br i1 false, label %store.throw, label %store.next
+
+store.next:                                       ; preds = %deref.next6
+  store i32 %8, i32* %3, align 8
+  br i1 false, label %store.throw7, label %store.next8
+
+store.next8:                                      ; preds = %store.next
+  %13 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %complit, i32 0, i32 1
+  %14 = add i32 %11, %12
+  store i32 %14, i32* %13, align 4
+  %.elt = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %complit, i32 0, i32 0
+  %.unpack = load i32, i32* %.elt, align 8
+  %15 = insertvalue %"main.Point[int]" undef, i32 %.unpack, 0
+  %16 = insertvalue %"main.Point[int]" %15, i32 %14, 1
+  ret %"main.Point[int]" %16
+
+deref.throw:                                      ; preds = %entry
+  unreachable
+
+deref.throw1:                                     ; preds = %deref.next
+  unreachable
+
+deref.throw3:                                     ; preds = %deref.next2
+  unreachable
+
+deref.throw5:                                     ; preds = %deref.next4
+  unreachable
+
+store.throw:                                      ; preds = %deref.next6
+  unreachable
+
+store.throw7:                                     ; preds = %store.next
+  unreachable
+}
+
 attributes #0 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
 attributes #1 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
 attributes #2 = { nounwind }