xref: /llvm-project/llvm/test/Instrumentation/SanitizerCoverage/interposable-symbol.ll (revision 86d1a0b30684f2ab8ec33f0b6fa3d05e4bada0c8) 
1; Test that interposable symbols do not get put in comdats.
2; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=3 -sanitizer-coverage-trace-pc-guard -mtriple x86_64-linux-gnu -S | FileCheck %s --check-prefixes=CHECK,ELF
3; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=3 -sanitizer-coverage-trace-pc-guard -mtriple x86_64-windows-msvc -S | FileCheck %s --check-prefixes=CHECK,COFF
4
5define void @Vanilla() {
6entry:
7  ret void
8}
9
10define linkonce void @LinkOnce() {
11entry:
12  ret void
13}
14
15define weak void @Weak() {
16entry:
17  ret void
18}
19
20declare extern_weak void @ExternWeak()
21
22define linkonce_odr void @LinkOnceOdr() {
23entry:
24  ret void
25}
26
27define weak_odr void @WeakOdr() {
28entry:
29  ret void
30}
31
32; CHECK:      $Vanilla = comdat nodeduplicate
33; ELF:        $LinkOnceOdr = comdat nodeduplicate
34; COFF:       $LinkOnceOdr = comdat any
35; CHECK:      @__sancov_gen_ = private global [1 x i32] zeroinitializer, section {{.*}}, comdat($Vanilla), align 4{{$}}
36; CHECK-NEXT: @__sancov_gen_.1 = private global [1 x i32] zeroinitializer, section {{.*}}, align 4{{$}}
37; CHECK-NEXT: @__sancov_gen_.2 = private global [1 x i32] zeroinitializer, section {{.*}}, align 4{{$}}
38; CHECK-NEXT: @__sancov_gen_.3 = private global [1 x i32] zeroinitializer, section {{.*}}, comdat($LinkOnceOdr), align 4{{$}}
39; CHECK-NEXT: @__sancov_gen_.4 = private global [1 x i32] zeroinitializer, section {{.*}}, comdat($WeakOdr), align 4{{$}}
40
41; CHECK: define void @Vanilla() comdat {
42; ELF:   define linkonce void @LinkOnce() comdat {
43; ELF:   define weak void @Weak() comdat {
44; COFF:  define linkonce void @LinkOnce() {
45; COFF:  define weak void @Weak() {
46; CHECK: declare extern_weak void @ExternWeak()
47; CHECK: define linkonce_odr void @LinkOnceOdr() comdat {
48; CHECK: define weak_odr void @WeakOdr() comdat {
49