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annotate 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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150
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1 // Test that misexpect emits no warning when prediction is correct
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2
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3 // RUN: llvm-profdata merge %S/Inputs/misexpect-branch.proftext -o %t.profdata
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4 // RUN: %clang_cc1 %s -O2 -o - -disable-llvm-passes -emit-llvm -fprofile-instrument-use-path=%t.profdata -verify -Wmisexpect
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5
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6 // expected-no-diagnostics
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7 #define unpredictable(x) __builtin_unpredictable(!!(x))
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8
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9 int foo(int);
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10 int baz(int);
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11 int buzz();
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12
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13 const int inner_loop = 100;
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14 const int outer_loop = 2000;
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15
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16 int bar() {
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17 int rando = buzz();
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18 int x = 0;
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19 if (unpredictable(rando % (outer_loop * inner_loop) == 0)) {
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20 x = baz(rando);
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21 } else {
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22 x = foo(50);
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23 }
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24 return x;
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25 }