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 global [9 x i64] zeroinitializer 14 // PGOGEN-EXC: @[[THC:__profc__Z6throwsv]] = private global [9 x i64] zeroinitializer 15 // PGOGEN: @[[UNC:__profc__Z11unreachablei]] = private 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
