1 // Test instrumentation of C++ exception handling constructs.
2
3 // FIXME: Don't seek bb labels, like "if.else"
4 // REQUIRES: asserts
5
6 // RUN: %clangxx %s -o - -emit-llvm -S -fprofile-instr-generate -fexceptions -target %itanium_abi_triple | FileCheck -check-prefix=PGOGEN %s
7 // RUN: %clangxx %s -o - -emit-llvm -S -fprofile-instr-generate -fexceptions -target %itanium_abi_triple | FileCheck -check-prefix=PGOGEN-EXC %s
8
9 // RUN: llvm-profdata merge %S/Inputs/cxx-throws.proftext -o %t.profdata
10 // RUN: %clang %s -o - -emit-llvm -S -fprofile-instr-use=%t.profdata -fcxx-exceptions -target %itanium_abi_triple | FileCheck -check-prefix=PGOUSE %s
11 // RUN: %clang %s -o - -emit-llvm -S -fprofile-instr-use=%t.profdata -fcxx-exceptions -target %itanium_abi_triple | FileCheck -check-prefix=PGOUSE-EXC %s
12
13 // PGOGEN: @[[THC:__llvm_profile_counters__Z6throwsv]] = private global [9 x i64] zeroinitializer
14 // PGOGEN-EXC: @[[THC:__llvm_profile_counters__Z6throwsv]] = private global [9 x i64] zeroinitializer
15
16 // PGOGEN-LABEL: @_Z6throwsv()
17 // PGOUSE-LABEL: @_Z6throwsv()
18 // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 0
throws()19 void throws() {
20 // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 1
21 // PGOUSE: br {{.*}} !prof ![[TH1:[0-9]+]]
22 for (int i = 0; i < 100; ++i) {
23 try {
24 // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 3
25 // PGOUSE: br {{.*}} !prof ![[TH2:[0-9]+]]
26 if (i % 3) {
27 // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 4
28 // PGOUSE: br {{.*}} !prof ![[TH3:[0-9]+]]
29 if (i < 50)
30 throw 1;
31 } else {
32 // The catch block may be emitted after the throw above, we can skip it
33 // by looking for an else block, but this will break if anyone puts an
34 // else in the catch
35 // PGOUSE: if.else{{.*}}:
36 // PGOGEN: if.else{{.*}}:
37
38 // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 5
39 // PGOUSE: br {{.*}} !prof ![[TH4:[0-9]+]]
40 if (i >= 50)
41 throw 0;
42 }
43 } catch (int e) {
44 // PGOUSE-EXC: catch{{.*}}:
45 // PGOGEN-EXC: catch{{.*}}:
46
47 // PGOGEN-EXC: store {{.*}} @[[THC]], i64 0, i64 6
48 // PGOGEN-EXC: store {{.*}} @[[THC]], i64 0, i64 7
49 // PGOUSE-EXC: br {{.*}} !prof ![[TH5:[0-9]+]]
50 if (e) {}
51 }
52 // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 2
53
54 // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 8
55 // PGOUSE: br {{.*}} !prof ![[TH6:[0-9]+]]
56 if (i < 100) {}
57 }
58
59 // PGOUSE-NOT: br {{.*}} !prof ![0-9]+
60 // PGOUSE: ret void
61 }
62
63 // PGOUSE-DAG: ![[TH1]] = !{!"branch_weights", i32 101, i32 2}
64 // PGOUSE-DAG: ![[TH2]] = !{!"branch_weights", i32 67, i32 35}
65 // PGOUSE-DAG: ![[TH3]] = !{!"branch_weights", i32 34, i32 34}
66 // PGOUSE-DAG: ![[TH4]] = !{!"branch_weights", i32 18, i32 18}
67 // PGOUSE-EXC: ![[TH5]] = !{!"branch_weights", i32 34, i32 18}
68 // PGOUSE-DAG: ![[TH6]] = !{!"branch_weights", i32 101, i32 1}
69
main(int argc,const char * argv[])70 int main(int argc, const char *argv[]) {
71 throws();
72 return 0;
73 }
74