Marcos Pividori
f7fe49c66d
[libFuzzer] Use long long to ensure 64 bits.
...
We should always use unsigned long long to ensure 64 bits. On Windows, unsigned
long is 4 bytes. This was the reason why value-profile-cmp4.test was failing on
Windows.
Differential Revision: https://reviews.llvm.org/D29617
llvm-svn: 294390
2017-02-08 00:03:31 +00:00
Kostya Serebryany
15ea268899
[libFuzzer] simplify the value profiling callback further: don't use (idx MOD prime) on the hot path where it is useless anyway
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llvm-svn: 293239
2017-01-27 00:39:12 +00:00
Kostya Serebryany
17437719df
[libFuzzer] simplify the value profile code and disable asan/msan on it
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llvm-svn: 293236
2017-01-27 00:09:59 +00:00
Kostya Serebryany
295957939e
[libFuzzer] refactoring to make -shrink=1 work for value profile, added a test.
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llvm-svn: 283409
2016-10-05 22:56:21 +00:00
Kostya Serebryany
acf46844e0
[libFuzzer] initialize ValueBitMap::NumBits
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llvm-svn: 282721
2016-09-29 15:51:28 +00:00
Kostya Serebryany
496fab274a
[libFuzzer] simplify HandleTrace again, start re-running interesting units and collecting their features.
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llvm-svn: 282316
2016-09-23 23:51:58 +00:00
Kostya Serebryany
13b73c7438
[libFuzzer] change ValueBitMap to remember the number of bits in it
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llvm-svn: 282216
2016-09-23 00:22:46 +00:00
Kostya Serebryany
de353bfbcd
[libFuzzer] more refactoring
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llvm-svn: 282113
2016-09-21 21:17:23 +00:00
Kostya Serebryany
a166497232
[libFuzzer] implement print_pcs with trace-pc-guard. Change the trace-pc-guard heuristic for 8-bit counters to look more like in AFL (not that it's provable better, but the existin test preferes this heuristic)
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llvm-svn: 281577
2016-09-15 04:36:45 +00:00
Kostya Serebryany
ed73edee45
[libFuzzer] use __attribute__((target("popcnt"))) only on x86_64
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llvm-svn: 279601
2016-08-24 01:38:42 +00:00
Kostya Serebryany
e538e94e53
[libFuzzer] force proper popcnt instruction
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llvm-svn: 279002
2016-08-17 23:09:57 +00:00
Kostya Serebryany
53ab688ab6
[libFuzzer] minor speed improvement
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llvm-svn: 278856
2016-08-16 21:28:05 +00:00
Kostya Serebryany
8a3b057601
[libFuzzer] new experimental feature: value profiling. Profiles values that affect control flow and treats new values as new coverage.
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llvm-svn: 278839
2016-08-16 19:33:51 +00:00
Kostya Serebryany
91340fc197
[libFuzzer] refactoring around PCMap, NFC
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llvm-svn: 278825
2016-08-16 17:37:13 +00:00
