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: %clang_cc1 %s -o - -emit-llvm -fprofile-instrument=clang -fexceptions -fcxx-exceptions -triple %itanium_abi_triple | FileCheck -check-prefix=PGOGEN %s |
7 | // RUN: %clang_cc1 %s -o - -emit-llvm -fprofile-instrument=clang -fexceptions -fcxx-exceptions -triple %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_cc1 %s -o - -emit-llvm -fprofile-instrument-use-path=%t.profdata -fexceptions -fcxx-exceptions -triple %itanium_abi_triple | FileCheck -check-prefix=PGOUSE %s |
11 | // RUN: %clang_cc1 %s -o - -emit-llvm -fprofile-instrument-use-path=%t.profdata -fexceptions -fcxx-exceptions -triple %itanium_abi_triple | FileCheck -check-prefix=PGOUSE-EXC %s |
12 | |
13 | // PGOGEN: @[[THC:__profc__Z6throwsv]] = {{(private|internal)}} global [9 x i64] zeroinitializer |
14 | // PGOGEN-EXC: @[[THC:__profc__Z6throwsv]] = {{(private|internal)}} global [9 x i64] zeroinitializer |
15 | // PGOGEN: @[[UNC:__profc__Z11unreachablei]] = {{(private|internal)}} global [3 x i64] zeroinitializer |
16 | |
17 | // PGOGEN-LABEL: @_Z6throwsv() |
18 | // PGOUSE-LABEL: @_Z6throwsv() |
19 | // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 0 |
20 | void throws() { |
21 | // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 1 |
22 | // PGOUSE: br {{.*}} !prof ![[TH1:[0-9]+]] |
23 | for (int i = 0; i < 100; ++i) { |
24 | try { |
25 | // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 3 |
26 | // PGOUSE: br {{.*}} !prof ![[TH2:[0-9]+]] |
27 | if (i % 3) { |
28 | // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 4 |
29 | // PGOUSE: br {{.*}} !prof ![[TH3:[0-9]+]] |
30 | if (i < 50) |
31 | throw 1; |
32 | } else { |
33 | // The catch block may be emitted after the throw above, we can skip it |
34 | // by looking for an else block, but this will break if anyone puts an |
35 | // else in the catch |
36 | // PGOUSE: if.else{{.*}}: |
37 | // PGOGEN: if.else{{.*}}: |
38 | |
39 | // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 5 |
40 | // PGOUSE: br {{.*}} !prof ![[TH4:[0-9]+]] |
41 | if (i >= 50) |
42 | throw 0; |
43 | } |
44 | } catch (int e) { |
45 | // PGOUSE-EXC: catch{{.*}}: |
46 | // PGOGEN-EXC: catch{{.*}}: |
47 | |
48 | // PGOGEN-EXC: store {{.*}} @[[THC]], i64 0, i64 6 |
49 | // PGOGEN-EXC: store {{.*}} @[[THC]], i64 0, i64 7 |
50 | // PGOUSE-EXC: br {{.*}} !prof ![[TH5:[0-9]+]] |
51 | if (e) {} |
52 | } |
53 | // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 2 |
54 | |
55 | // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 8 |
56 | // PGOUSE: br {{.*}} !prof ![[TH6:[0-9]+]] |
57 | if (i < 100) {} |
58 | } |
59 | |
60 | // PGOUSE-NOT: br {{.*}} !prof ![0-9]+ |
61 | // PGOUSE: ret void |
62 | } |
63 | |
64 | // PGOGEN-LABEL: @_Z11unreachablei(i32 |
65 | // PGOUSE-LABEL: @_Z11unreachablei(i32 |
66 | // PGOGEN: store {{.*}} @[[UNC]], i64 0, i64 0 |
67 | void unreachable(int i) { |
68 | // PGOGEN: store {{.*}} @[[UNC]], i64 0, i64 1 |
69 | // PGOUSE: br {{.*}} !prof ![[UN1:[0-9]+]] |
70 | if (i) |
71 | throw i; |
72 | |
73 | // PGOGEN: store {{.*}} @[[UNC]], i64 0, i64 2 |
74 | // Since we never reach here, the weights should all be zero (and skipped) |
75 | // PGOUSE-NOT: br {{.*}} !prof !{{.*}} |
76 | if (i) {} |
77 | } |
78 | |
79 | // PGOUSE-DAG: ![[TH1]] = !{!"branch_weights", i32 101, i32 2} |
80 | // PGOUSE-DAG: ![[TH2]] = !{!"branch_weights", i32 67, i32 35} |
81 | // PGOUSE-DAG: ![[TH3]] = !{!"branch_weights", i32 34, i32 34} |
82 | // PGOUSE-DAG: ![[TH4]] = !{!"branch_weights", i32 18, i32 18} |
83 | // PGOUSE-EXC: ![[TH5]] = !{!"branch_weights", i32 34, i32 18} |
84 | // PGOUSE-DAG: ![[TH6]] = !{!"branch_weights", i32 101, i32 1} |
85 | // PGOUSE-DAG: ![[UN1]] = !{!"branch_weights", i32 2, i32 1} |
86 | |
87 | int main(int argc, const char *argv[]) { |
88 | throws(); |
89 | try { |
90 | unreachable(1); |
91 | } catch (int) {} |
92 | return 0; |
93 | } |
94 | |