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94 lines
3.5 KiB
94 lines
3.5 KiB
4 months ago
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// Test instrumentation of C++ exception handling constructs.
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// FIXME: Don't seek bb labels, like "if.else"
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// REQUIRES: asserts
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// RUN: %clang_cc1 %s -o - -emit-llvm -fprofile-instrument=clang -fexceptions -fcxx-exceptions -triple %itanium_abi_triple | FileCheck -check-prefix=PGOGEN %s
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// RUN: %clang_cc1 %s -o - -emit-llvm -fprofile-instrument=clang -fexceptions -fcxx-exceptions -triple %itanium_abi_triple | FileCheck -check-prefix=PGOGEN-EXC %s
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// RUN: llvm-profdata merge %S/Inputs/cxx-throws.proftext -o %t.profdata
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// 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
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// 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
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// PGOGEN: @[[THC:__profc__Z6throwsv]] = private global [9 x i64] zeroinitializer
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// PGOGEN-EXC: @[[THC:__profc__Z6throwsv]] = private global [9 x i64] zeroinitializer
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// PGOGEN: @[[UNC:__profc__Z11unreachablei]] = private global [3 x i64] zeroinitializer
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// PGOGEN-LABEL: @_Z6throwsv()
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// PGOUSE-LABEL: @_Z6throwsv()
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// PGOGEN: store {{.*}} @[[THC]], i64 0, i64 0
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void throws() {
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// PGOGEN: store {{.*}} @[[THC]], i64 0, i64 1
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// PGOUSE: br {{.*}} !prof ![[TH1:[0-9]+]]
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for (int i = 0; i < 100; ++i) {
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try {
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// PGOGEN: store {{.*}} @[[THC]], i64 0, i64 3
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// PGOUSE: br {{.*}} !prof ![[TH2:[0-9]+]]
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if (i % 3) {
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// PGOGEN: store {{.*}} @[[THC]], i64 0, i64 4
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// PGOUSE: br {{.*}} !prof ![[TH3:[0-9]+]]
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if (i < 50)
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throw 1;
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} else {
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// The catch block may be emitted after the throw above, we can skip it
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// by looking for an else block, but this will break if anyone puts an
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// else in the catch
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// PGOUSE: if.else{{.*}}:
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// PGOGEN: if.else{{.*}}:
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// PGOGEN: store {{.*}} @[[THC]], i64 0, i64 5
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// PGOUSE: br {{.*}} !prof ![[TH4:[0-9]+]]
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if (i >= 50)
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throw 0;
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}
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} catch (int e) {
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// PGOUSE-EXC: catch{{.*}}:
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// PGOGEN-EXC: catch{{.*}}:
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// PGOGEN-EXC: store {{.*}} @[[THC]], i64 0, i64 6
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// PGOGEN-EXC: store {{.*}} @[[THC]], i64 0, i64 7
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// PGOUSE-EXC: br {{.*}} !prof ![[TH5:[0-9]+]]
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if (e) {}
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}
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// PGOGEN: store {{.*}} @[[THC]], i64 0, i64 2
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// PGOGEN: store {{.*}} @[[THC]], i64 0, i64 8
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// PGOUSE: br {{.*}} !prof ![[TH6:[0-9]+]]
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if (i < 100) {}
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}
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// PGOUSE-NOT: br {{.*}} !prof ![0-9]+
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// PGOUSE: ret void
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}
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// PGOGEN-LABEL: @_Z11unreachablei(i32
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// PGOUSE-LABEL: @_Z11unreachablei(i32
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// PGOGEN: store {{.*}} @[[UNC]], i64 0, i64 0
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void unreachable(int i) {
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// PGOGEN: store {{.*}} @[[UNC]], i64 0, i64 1
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// PGOUSE: br {{.*}} !prof ![[UN1:[0-9]+]]
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if (i)
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throw i;
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// PGOGEN: store {{.*}} @[[UNC]], i64 0, i64 2
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// Since we never reach here, the weights should all be zero (and skipped)
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// PGOUSE-NOT: br {{.*}} !prof !{{.*}}
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if (i) {}
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}
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// PGOUSE-DAG: ![[TH1]] = !{!"branch_weights", i32 101, i32 2}
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// PGOUSE-DAG: ![[TH2]] = !{!"branch_weights", i32 67, i32 35}
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// PGOUSE-DAG: ![[TH3]] = !{!"branch_weights", i32 34, i32 34}
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// PGOUSE-DAG: ![[TH4]] = !{!"branch_weights", i32 18, i32 18}
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// PGOUSE-EXC: ![[TH5]] = !{!"branch_weights", i32 34, i32 18}
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// PGOUSE-DAG: ![[TH6]] = !{!"branch_weights", i32 101, i32 1}
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// PGOUSE-DAG: ![[UN1]] = !{!"branch_weights", i32 2, i32 1}
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int main(int argc, const char *argv[]) {
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throws();
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try {
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unreachable(1);
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} catch (int) {}
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return 0;
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}
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