clang/test/CodeGen/builtin-bpf-btf-type-id.c

   1 // REQUIRES: bpf-registered-target
   2 // RUN: %clang -target bpf -emit-llvm -S -g -Xclang -disable-llvm-passes %s -o - | FileCheck %s
   3
   4 unsigned test1(int a) { return __builtin_btf_type_id(a, 0); }
   5 unsigned test2(int a) { return __builtin_btf_type_id(&a, 0); }
   6
   7 struct t1 { int a; };
   8 typedef struct t1 __t1;
   9 unsigned test3() {
  10   return __builtin_btf_type_id(*(struct t1 *)0, 1) +
  11          __builtin_btf_type_id(*(__t1 *)0, 1);
  12 }
  13
  14 // CHECK: define dso_local i32 @test1
  15 // CHECK: call i64 @llvm.bpf.btf.type.id(i32 0, i64 0), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[INT:[0-9]+]]
  16 // CHECK: define dso_local i32 @test2
  17 // CHECK: call i64 @llvm.bpf.btf.type.id(i32 1, i64 0), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[INT_POINTER:[0-9]+]]
  18 // CHECK: define dso_local i32 @test3
  19 // CHECK: call i64 @llvm.bpf.btf.type.id(i32 2, i64 1), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[STRUCT_T1:[0-9]+]]
  20 // CHECK: call i64 @llvm.bpf.btf.type.id(i32 3, i64 1), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[TYPEDEF_T1:[0-9]+]]
  21 //
  22 // CHECK: ![[INT]] = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed
  23 // CHECK: ![[INT_POINTER]] = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: ![[INT]], size: 64
  24 // CHECK: ![[STRUCT_T1]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "t1"
  25 // CHECK: ![[TYPEDEF_T1]] = !DIDerivedType(tag: DW_TAG_typedef, name: "__t1"