TheRock/compiler/amd-llvm/llvm/test/tools/dsymutil/X86/DWARFLinkerParallel/odr-static-member-decl.test

# RUN: dsymutil --linker=parallel -f -o %t.parallel.out \
# RUN:   -oso-prepend-path=%p/../../Inputs -y %s
# RUN: llvm-dwarfdump --debug-info %t.parallel.out | \
# RUN:   FileCheck %s --check-prefix=PARALLEL \
# RUN:                --implicit-check-not=DW_TAG_structure_type
#
# RUN: dsymutil --linker=classic -f -o %t.classic.out \
# RUN:   -oso-prepend-path=%p/../../Inputs -y %s
# RUN: llvm-dwarfdump --debug-info %t.classic.out | \
# RUN:   FileCheck %s --check-prefix=CLASSIC

# Two CUs share a class with an in-class static member declaration. The
# out-of-line definition of the static lives in only one of them, so its
# DW_AT_specification reference puts the class into the type table. The
# in-class declaration was previously forced into PlainDwarf and dragged the
# parent class along with it, producing a duplicate empty class DIE in each
# CU alongside the artificial type unit copy.
#
# The classic linker is unaffected by the parallel linker bug; running it here
# guards against regressions and confirms the inputs aren't pathological.
#
# Compiled from:
#   h.h:
#     struct S {
#       const static int x = 42;
#       int y;
#     };
#   a.cpp:
#     #include "h.h"
#     int useA(S *s) { return s->y + S::x; }
#   b.cpp:
#     #include "h.h"
#     const int S::x;
#     int useB(S *s) { return s->y - S::x; }
#
#   clang++ -target x86_64-apple-darwin -g -O0 -c a.cpp -o a.o
#   clang++ -target x86_64-apple-darwin -g -O0 -c b.cpp -o b.o

---
triple: 'x86_64-apple-darwin'
objects:
  - filename: 'odr-static-member-decl/a.o'
    timestamp: 0
    symbols:
      - { sym: __Z4useAP1S, objAddr: 0x0, binAddr: 0x100000000, size: 0x20 }
  - filename: 'odr-static-member-decl/b.o'
    timestamp: 0
    symbols:
      - { sym: __Z4useBP1S, objAddr: 0x0, binAddr: 0x100000100, size: 0x20 }
      - { sym: __ZN1S1xE,   objAddr: 0x14, binAddr: 0x100000200, size: 0x4 }
...

# Parallel linker: struct S — with the in-class static x and the member y —
# must appear exactly once, in the artificial type unit. The two source CUs
# must not carry their own copy. The --implicit-check-not above enforces
# "exactly one structure_type in the entire dump".

# PARALLEL: DW_TAG_compile_unit
# PARALLEL: DW_AT_name{{.*}}"__artificial_type_unit"
# PARALLEL: DW_TAG_structure_type
# PARALLEL: DW_AT_name{{.*}}"S"
# PARALLEL: DW_TAG_variable
# PARALLEL: DW_AT_name{{.*}}"x"
# PARALLEL: DW_AT_declaration
# PARALLEL: DW_TAG_member
# PARALLEL: DW_AT_name{{.*}}"y"

# PARALLEL: DW_TAG_compile_unit
# PARALLEL: DW_AT_name{{.*}}"a.cpp"
# PARALLEL: DW_TAG_subprogram
# PARALLEL: DW_AT_name{{.*}}"useA"

# PARALLEL: DW_TAG_compile_unit
# PARALLEL: DW_AT_name{{.*}}"b.cpp"
# PARALLEL: DW_TAG_subprogram
# PARALLEL: DW_AT_name{{.*}}"useB"

# Classic linker: there is no artificial type unit; each source CU keeps its
# own struct S. Verify both copies are well-formed (member y, in-class static
# decl x) and that each CU has its subprogram.

# CLASSIC: DW_TAG_compile_unit
# CLASSIC: DW_AT_name{{.*}}"a.cpp"
# CLASSIC: DW_TAG_structure_type
# CLASSIC: DW_AT_name{{.*}}"S"
# CLASSIC: DW_TAG_variable
# CLASSIC: DW_AT_name{{.*}}"x"
# CLASSIC: DW_AT_declaration
# CLASSIC: DW_TAG_member
# CLASSIC: DW_AT_name{{.*}}"y"
# CLASSIC: DW_TAG_subprogram
# CLASSIC: DW_AT_name{{.*}}"useA"

# CLASSIC: DW_TAG_compile_unit
# CLASSIC: DW_AT_name{{.*}}"b.cpp"
# CLASSIC: DW_TAG_structure_type
# CLASSIC: DW_AT_name{{.*}}"S"
# CLASSIC: DW_TAG_variable
# CLASSIC: DW_AT_name{{.*}}"x"
# CLASSIC: DW_AT_declaration
# CLASSIC: DW_TAG_member
# CLASSIC: DW_AT_name{{.*}}"y"
# CLASSIC: DW_TAG_subprogram
# CLASSIC: DW_AT_name{{.*}}"useB"