llvm-project

Commit Graph

Author	SHA1	Message	Date
Mehdi Amini	03b42e41bf	Remove every uses of getGlobalContext() in LLVM (but the C API) At the same time, fixes InstructionsTest::CastInst unittest: yes you can leave the IR in an invalid state and exit when you don't destroy the context (like the global one), no longer now. This is the first part of http://reviews.llvm.org/D19094 From: Mehdi Amini <mehdi.amini@apple.com> llvm-svn: 266379	2016-04-14 21:59:01 +00:00
Kostya Serebryany	20bb5e71b2	[libFuzzer] make LLVMFuzzerTestOneInput (the fuzzer target function) return int instead of void. The actual return value is not yet used (and expected to be 0). This change is API breaking, so the fuzzers will need to be updated. llvm-svn: 249214	2015-10-02 23:34:06 +00:00
Karl Schimpf	b9c2c71d09	Build a lib/Fuzzer version for llvm-as. Summary: This CL is associated with a fuzzing effort to find bugs in LLVM. The first step is to fuzz llvm-as to find potential issues in generating IR. Both afl-fuzz and LLVM's lib/Fuzzer are being used. This CL introduces the executable that implements the in-process fuzzer using LLVM's lib/Fuzzer. The motivation for using lib/Fuzzer is based on time comparisons between afl-fuzz and lib/Fuzzer. Early results show that per-process, the lib/Fuzzer implemenation of llvm-as (i.e. this CL) generates over 30 times the number of mutations found by afl-fuzz, per hour runtime. The speedup is due to the removal of overhead of forking a process, and loading the executable into memory. I placed this under the tools directory, since it is an executable. It is also only conditionally built if (using cmake) the flag LLVM_USEE_SANITIZE_COVERAGE is used, so that it isn't built by default. Reviewers: kcc, filcab Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D12438 llvm-svn: 246458	2015-08-31 17:55:32 +00:00

Author

SHA1

Message

Date

Mehdi Amini

03b42e41bf

Remove every uses of getGlobalContext() in LLVM (but the C API)

At the same time, fixes InstructionsTest::CastInst unittest: yes
you can leave the IR in an invalid state and exit when you don't
destroy the context (like the global one), no longer now.

This is the first part of http://reviews.llvm.org/D19094

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 266379

2016-04-14 21:59:01 +00:00

Kostya Serebryany

20bb5e71b2

[libFuzzer] make LLVMFuzzerTestOneInput (the fuzzer target function) return int instead of void. The actual return value is not *yet* used (and expected to be 0). This change is API breaking, so the fuzzers will need to be updated.

llvm-svn: 249214

2015-10-02 23:34:06 +00:00

Karl Schimpf

b9c2c71d09

Build a lib/Fuzzer version for llvm-as.

Summary:
This CL is associated with a fuzzing effort to find bugs in LLVM. The
first step is to fuzz llvm-as to find potential issues in generating
IR. Both afl-fuzz and LLVM's lib/Fuzzer are being used.

This CL introduces the executable that implements the in-process
fuzzer using LLVM's lib/Fuzzer. The motivation for using lib/Fuzzer is
based on time comparisons between afl-fuzz and lib/Fuzzer. Early
results show that per-process, the lib/Fuzzer implemenation of llvm-as
(i.e. this CL) generates over 30 times the number of mutations found
by afl-fuzz, per hour runtime. The speedup is due to the removal of
overhead of forking a process, and loading the executable into memory.

I placed this under the tools directory, since it is an executable. It
is also only conditionally built if (using cmake) the flag
LLVM_USEE_SANITIZE_COVERAGE is used, so that it isn't built by
default.

Reviewers: kcc, filcab

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D12438

llvm-svn: 246458

2015-08-31 17:55:32 +00:00

3 Commits