1 // Test that misexpect emits no warning when prediction is correct 2 3 // RUN: llvm-profdata merge %S/Inputs/misexpect-branch.proftext -o %t.profdata 4 // RUN: %clang_cc1 %s -O2 -o - -disable-llvm-passes -emit-llvm -fprofile-instrument-use-path=%t.profdata -verify -Wmisexpect 5 6 // expected-no-diagnostics 7 #define likely(x) __builtin_expect(!!(x), 1) 8 #define unlikely(x) __builtin_expect(!!(x), 0) 9 10 int foo(int); 11 int baz(int); 12 int buzz(); 13 14 const int inner_loop = 100; 15 const int outer_loop = 2000; 16 bar()17int bar() { 18 int rando = buzz(); 19 int x = 0; 20 if (unlikely(rando % (outer_loop * inner_loop) == 0)) { 21 x = baz(rando); 22 } else { 23 x = foo(50); 24 } 25 return x; 26 } 27