forked from OSchip/llvm-project
86 lines
3.3 KiB
C++
86 lines
3.3 KiB
C++
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// REQUIRES: lld-available
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// RUN: %clang_profgen -fcoverage-mapping -c %s -o %t0.o
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// RUN: %clang_profgen -fcoverage-mapping -c %s -DOBJ_1 -o %t1.o
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// RUN: %clang_profgen -fcoverage-mapping -c %s -DOBJ_2 -o %t2.o
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/// An external symbol can override a weak external symbol.
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// RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld -Wl,-opt:noref %t0.o %t1.o -o %t1
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// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t1 | FileCheck %s --check-prefix=CHECK1
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// RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE1
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// RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld -Wl,-opt:ref %t0.o %t1.o -o %t1
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// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t1 | FileCheck %s --check-prefix=CHECK1
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// RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE1
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/// link.exe does not support weak overridding weak.
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// RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld -Wl,-lldmingw,-opt:ref %t0.o %t2.o -o %t2
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// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t2 | FileCheck %s --check-prefix=CHECK2
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// RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE2
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/// Repeat the above tests with -ffunction-sections (associative comdat).
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// RUN: %clang_profgen -fcoverage-mapping -ffunction-sections -c %s -o %t0.o
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// RUN: %clang_profgen -fcoverage-mapping -ffunction-sections -c %s -DOBJ_1 -o %t1.o
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// RUN: %clang_profgen -fcoverage-mapping -ffunction-sections -c %s -DOBJ_2 -o %t2.o
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// RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld -Wl,-opt:noref %t0.o %t1.o -o %t1
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// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t1 | FileCheck %s --check-prefix=CHECK1
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// RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE1
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// RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld -Wl,-opt:ref %t0.o %t1.o -o %t1
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// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t1 | FileCheck %s --check-prefix=CHECK1
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// RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE1
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// RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld -Wl,-lldmingw,-opt:ref %t0.o %t2.o -o %t2
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// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t2 | FileCheck %s --check-prefix=CHECK2
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// RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE2
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// CHECK1: strong
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// CHECK1: strong
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/// Document the current behavior:
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/// __profc_?weak@@YAXXZ in %t1.o is local and has a zero value.
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/// Without GC it takes a duplicate entry.
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// PROFILE1: ?weak@@YAXXZ:
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// PROFILE1-NEXT: Hash:
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// PROFILE1-NEXT: Counters: 1
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// PROFILE1-NEXT: Function count: 0
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// PROFILE1: ?weak@@YAXXZ:
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// PROFILE1-NEXT: Hash:
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// PROFILE1-NEXT: Counters: 1
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// PROFILE1-NEXT: Function count: 2
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// CHECK2: weak
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// CHECK2: weak
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// PROFILE2: ?weak@@YAXXZ:
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// PROFILE2-NEXT: Hash:
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// PROFILE2-NEXT: Counters: 1
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// PROFILE2-NEXT: Function count: 2
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// PROFILE2: ?weak@@YAXXZ:
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// PROFILE2-NEXT: Hash:
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// PROFILE2-NEXT: Counters: 1
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// PROFILE2-NEXT: Function count: 0
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#ifdef OBJ_1
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#include <stdio.h>
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void weak() { puts("strong"); }
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void foo() { weak(); }
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#elif defined(OBJ_2)
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#include <stdio.h>
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__attribute__((weak)) void weak() { puts("unreachable"); }
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void foo() { weak(); }
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#else
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#include <stdio.h>
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__attribute__((weak)) void weak() { puts("weak"); }
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void foo();
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int main() {
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foo();
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weak();
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}
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#endif
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