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 -target %itanium_abi_triple | FileCheck -check-prefix=PGOGEN %s 7 // RUN: %clangxx %s -o - -emit-llvm -S -fprofile-instr-generate -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 -target %itanium_abi_triple | FileCheck -check-prefix=PGOUSE %s 11 // RUN: %clang %s -o - -emit-llvm -S -fprofile-instr-use=%t.profdata -target %itanium_abi_triple | FileCheck -check-prefix=PGOUSE-EXC %s 12 13 // PGOGEN: @[[THC:__llvm_profile_counters__Z6throwsv]] = hidden global [9 x i64] zeroinitializer 14 // PGOGEN-EXC: @[[THC:__llvm_profile_counters__Z6throwsv]] = hidden global [9 x i64] zeroinitializer 15 16 // PGOGEN-LABEL: @_Z6throwsv() 17 // PGOUSE-LABEL: @_Z6throwsv() 18 // PGOGEN: store {{.*}} @[[THC]], i64 0, i64 0 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]] = metadata !{metadata !"branch_weights", i32 101, i32 2} 64 // PGOUSE-DAG: ![[TH2]] = metadata !{metadata !"branch_weights", i32 67, i32 35} 65 // PGOUSE-DAG: ![[TH3]] = metadata !{metadata !"branch_weights", i32 34, i32 34} 66 // PGOUSE-DAG: ![[TH4]] = metadata !{metadata !"branch_weights", i32 18, i32 18} 67 // PGOUSE-EXC: ![[TH5]] = metadata !{metadata !"branch_weights", i32 34, i32 18} 68 // PGOUSE-DAG: ![[TH6]] = metadata !{metadata !"branch_weights", i32 101, i32 1} 69 70 int main(int argc, const char *argv[]) { 71 throws(); 72 return 0; 73 } 74
