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116 lines
1.7 KiB
116 lines
1.7 KiB
/*
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* Copyright (c) 2018 - present Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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// Cost: 5
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int foo_OK() {
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int i, j;
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i = 17;
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j = 31;
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return i + j + 3 + 7;
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}
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// Cost: 17
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int bar_OK() {
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int j = 0;
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j++;
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j++;
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j++;
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j = foo_OK();
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j++;
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return j;
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}
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// Cost: 25
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int cond_OK(int i) {
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int x;
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if (i < 0) {
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x = bar_OK();
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} else {
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x = 1;
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}
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return x;
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}
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// Cost: 5
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void alias_OK() {
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int i, j;
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j = i;
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i = ++i;
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}
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// Cost: 6
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void alias2_OK() {
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int i, j, z;
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j = 1;
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z = 2;
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j = i;
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i = z;
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}
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// Cost: 1004
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int loop0_bad() {
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for (int i = 0; i < 100; i++) {
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alias2_OK();
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}
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return 0;
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}
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// Cost: 1006
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int loop1_bad() {
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int k = 100;
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for (int i = 0; i < k; i++) {
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alias2_OK();
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}
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return 0;
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}
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// This is currently evaluated to Top as the analysis is not powerful enough
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int FN_loop2(int k) {
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for (int i = 0; i < k; i++) {
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alias2_OK();
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}
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return 0;
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}
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// This is currently evaluated to Top as the analysis is not powerful enough
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int FN_loop3(int k) {
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for (int i = k; i < k + 15; i++) {
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alias2_OK();
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}
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return 0;
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}
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// Cost: 218
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// Shows that calling many times non expensive function can
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// result in an expensive computation
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int main_bad() {
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int k1, k2, k3, k4;
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cond_OK(2);
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k1 = bar_OK() + foo_OK() + cond_OK(15) * 2;
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k2 = bar_OK() + foo_OK() + cond_OK(17) * 3;
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k3 = bar_OK() + foo_OK() + cond_OK(11) * 3;
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k4 = bar_OK() + foo_OK() + cond_OK(19) * 3;
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return 0;
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}
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