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TheRock/compiler/amd-llvm/llvm/test/tools/dsymutil/X86/drop-module-fwd-decl.test
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derek.holloway 7502bf64a4
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# A forward declaration of `X` nested under DW_TAG_module M, plus a real
# definition of `X` in another CU. The parallel linker routes both
# through the type pool, so allocateTypeDie's def-wins resolution plus
# getFinalDie emit only the canonical definition under the module.
RUN: rm -rf %t && mkdir -p %t
RUN: llc -O0 -mtriple=x86_64-apple-darwin -filetype=obj \
RUN: -o %t/1.o %p/../Inputs/drop-module-fwd-decl/input.ll
RUN: dsymutil --linker parallel -f \
RUN: -y %p/../Inputs/drop-module-fwd-decl/debug-map.map \
RUN: -oso-prepend-path %t -o - 2>/dev/null \
RUN: | llvm-dwarfdump --debug-info - | FileCheck %s
# The artificial type unit holds DW_TAG_module M with the full definition
# of X nested inside (not a forward decl).
CHECK: DW_AT_name {{.*}}"__artificial_type_unit"
CHECK: DW_TAG_module
CHECK-NEXT: DW_AT_name {{.*}}"M"
CHECK: DW_TAG_structure_type
CHECK-NEXT: DW_AT_name {{.*}}"X"
CHECK-NEXT: DW_AT_byte_size
# No DW_AT_declaration anywhere in the linked output. The only declaration
# in the input was the forward decl; if the dedup regresses it will
# reappear here as a DW_TAG_structure_type X with DW_AT_declaration.
CHECK-NOT: DW_AT_declaration