src/test/codegen/enum-debug-niche.rs

   1 // This test depends on a patch that was committed to upstream LLVM
   2 // before 7.0, then backported to the Rust LLVM fork.  It tests that
   3 // optimized enum debug info accurately reflects the enum layout.
   4
   5 // ignore-tidy-linelength
   6 // ignore-windows
   7 // min-system-llvm-version 8.0
   8
   9 // compile-flags: -g -C no-prepopulate-passes
  10
  11 // CHECK-LABEL: @main
  12 // CHECK: {{.*}}DICompositeType{{.*}}tag: DW_TAG_variant_part,{{.*}}discriminator:{{.*}}
  13 // CHECK: {{.*}}DIDerivedType{{.*}}tag: DW_TAG_member,{{.*}}name: "A",{{.*}}extraData:{{.*}}
  14 // CHECK: {{.*}}DICompositeType{{.*}}tag: DW_TAG_structure_type,{{.*}}name: "A",{{.*}}
  15 // CHECK: {{.*}}DIDerivedType{{.*}}tag: DW_TAG_member,{{.*}}name: "B",{{.*}}extraData:{{.*}}
  16 // CHECK: {{.*}}DICompositeType{{.*}}tag: DW_TAG_structure_type,{{.*}}name: "B",{{.*}}
  17 // CHECK: {{.*}}DIDerivedType{{.*}}tag: DW_TAG_member,{{.*}}name: "C",{{.*}}extraData:{{.*}}
  18 // CHECK: {{.*}}DICompositeType{{.*}}tag: DW_TAG_structure_type,{{.*}}name: "C",{{.*}}
  19 // CHECK-NOT: {{.*}}DIDerivedType{{.*}}name: "D",{{.*}}extraData:{{.*}}
  20 // CHECK: {{.*}}DIDerivedType{{.*}}tag: DW_TAG_member,{{.*}}name: "D",{{.*}}
  21 // CHECK: {{.*}}DICompositeType{{.*}}tag: DW_TAG_structure_type,{{.*}}name: "D",{{.*}}
  22 // CHECK: {{.*}}DIDerivedType{{.*}}tag: DW_TAG_member,{{.*}}flags: DIFlagArtificial{{.*}}
  23
  24 #![allow(dead_code)]
  25 #![allow(unused_variables)]
  26 #![allow(unused_assignments)]
  27
  28 enum E { A, B, C, D(bool) }
  29
  30 pub fn main() {
  31     let e = E::D(true);
  32 }