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comparison clang/test/Profile/misexpect-branch-unpredictable.c @ 150:1d019706d866

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LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
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147:c2174574ed3a 150:1d019706d866
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 unpredictable(x) __builtin_unpredictable(!!(x))
8
9 int foo(int);
10 int baz(int);
11 int buzz();
12
13 const int inner_loop = 100;
14 const int outer_loop = 2000;
15
16 int bar() {
17 int rando = buzz();
18 int x = 0;
19 if (unpredictable(rando % (outer_loop * inner_loop) == 0)) {
20 x = baz(rando);
21 } else {
22 x = foo(50);
23 }
24 return x;
25 }