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// REQUIRES: lld-available
/// With lld -opt:ref we can ensure discarded[01] and their profc/profd
/// variables are discarded.
// RUN: %clang_profgen -fcoverage-mapping -ffunction-sections -fuse-ld=lld -Wl,-debug:symtab,-opt:noref %S/coverage-linkage.cpp -o %t
// RUN: llvm-nm %t | FileCheck %s --check-prefix=NOGC
// RUN: %clang_profgen -fcoverage-mapping -ffunction-sections -fuse-ld=lld -Wl,-debug:symtab,-opt:ref %S/coverage-linkage.cpp -o %t
// RUN: llvm-nm %t | FileCheck %s --check-prefix=GC
// NOGC: T ?discarded{{.*}}
// GC-NOT: T ?discarded{{.*}}
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