| // Test that misexpect emits no warning when prediction is correct |
| |
| // RUN: llvm-profdata merge %S/Inputs/misexpect-branch.proftext -o %t.profdata |
| // RUN: %clang_cc1 %s -O2 -o - -disable-llvm-passes -emit-llvm -fprofile-instrument-use-path=%t.profdata -verify -Wmisexpect |
| |
| // expected-no-diagnostics |
| #define likely(x) __builtin_expect(!!(x), 1) |
| #define unlikely(x) __builtin_expect(!!(x), 0) |
| |
| int foo(int); |
| int baz(int); |
| int buzz(); |
| |
| const int inner_loop = 100; |
| const int outer_loop = 2000; |
| |
| int bar() { |
| int rando = buzz(); |
| int x = 0; |
| if (unlikely(rando % (outer_loop * inner_loop) == 0)) { |
| x = baz(rando); |
| } else { |
| x = foo(50); |
| } |
| return x; |
| } |