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12 Commits

Author SHA1 Message Date
Igor Laevsky fd3a56e876 [llvm-opt-fuzzer] Add another pack of passes for continuous fuzzing 
Differential Revision: https://reviews.llvm.org/D43384

llvm-svn: 325487
 2018-02-19 11:57:07 +00:00
Rafael Espindola 6a86e25d90 Pass a reference to a module to the bitcode writer. 
This simplifies most callers as they are already using references or
std::unique_ptr.

llvm-svn: 325155
 2018-02-14 19:11:32 +00:00
Igor Laevsky 14c979da32 [llvm-opt-fuzzer] Avoid adding incorrect inputs to the fuzzer corpus 
Differential Revision: https://reviews.llvm.org/D42414

llvm-svn: 324225
 2018-02-05 11:05:47 +00:00
Igor Laevsky 50acecf2ab [llvm-opt-fuzzer] Add couple of popular passes 
Differential Revision: https://reviews.llvm.org/D42410

llvm-svn: 323314
 2018-01-24 09:57:17 +00:00
Igor Laevsky e714ef49af [FuzzMutate] NFC. Move parseModule and writeModule from llvm-isel-fuzzer into FuzzMutate. 
This is to be able to reuse them in the llvm-opt-fuzzer.

llvm-svn: 318407
 2017-11-16 15:23:08 +00:00
Igor Laevsky 13cc995c3d [llvm-opt-fuzzer] Introduce llvm-opt-fuzzer for fuzzing optimization passes 
This change adds generic fuzzing tools capable of running libFuzzer tests on
any optimization pass or combination of them.

Differential Revision: https://reviews.llvm.org/D39555

llvm-svn: 317883
 2017-11-10 12:19:08 +00:00
Justin Bogner 45623bd06d FuzzMutate: Fix arch parsing in FuzzerCLI 
The right way to parse arch names is by creating a triple. This was
using getArchTypeForLLVMName before, which doesn't really do the right
thing here.

llvm-svn: 315965
 2017-10-17 02:39:40 +00:00
Matt Morehouse 8bc23ab658 [llvm-isel-fuzzer] Use "--" as separator rather than '='. 
Summary: OSS-Fuzz doesn't support '=' in filenames.

Reviewers: bogner, kcc

Reviewed By: kcc

Subscribers: javed.absar, hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D38866

llvm-svn: 315647
 2017-10-13 00:18:32 +00:00
Justin Bogner 9ea7fbd1e8 Re-commit "llvm-isel-fuzzer: Handle a subset of backend flags in the exec name" 
Here we add a secondary option parser to llvm-isel-fuzzer (and provide
it for use with other fuzzers). With this, you can copy the fuzzer to
a name like llvm-isel-fuzzer=aarch64-gisel for a fuzzer that fuzzer
AArch64 with GlobalISel enabled, or fuzzer=x86_64 to fuzz x86, with no
flags required. This should be useful for running these in OSS-Fuzz.

Note that this handrolls a subset of cl::opts to recognize, rather
than embedding a complete command parser for argv[0]. If we find we
really need the flexibility of handling arbitrary options at some
point we can rethink this.

This re-applies 315545 using "=" instead of ":" as a separator for
arguments.

llvm-svn: 315557
 2017-10-12 04:35:32 +00:00
Hans Wennborg 022829d84c Revert r315545 "llvm-isel-fuzzer: Handle a subset of backend flags in the executable name" 
It broke some tests on Windows:

Failing Tests (4):
    LLVM :: tools/llvm-isel-fuzzer/execname-options.ll
    LLVM :: tools/llvm-isel-fuzzer/missing-triple.ll
    LLVM :: tools/llvm-isel-fuzzer/x86-empty-bc.ll
    LLVM :: tools/llvm-isel-fuzzer/x86-empty.ll

> llvm-isel-fuzzer: Handle a subset of backend flags in the executable name
>
> Here we add a secondary option parser to llvm-isel-fuzzer (and provide
> it for use with other fuzzers). With this, you can copy the fuzzer to
> a name like llvm-isel-fuzzer:aarch64-gisel for a fuzzer that fuzzer
> AArch64 with GlobalISel enabled, or fuzzer:x86_64 to fuzz x86, with no
> flags required. This should be useful for running these in OSS-Fuzz.
>
> Note that this handrolls a subset of cl::opts to recognize, rather
> than embedding a complete command parser for argv[0]. If we find we
> really need the flexibility of handling arbitrary options at some
> point we can rethink this.

llvm-svn: 315554
 2017-10-12 03:32:09 +00:00
Justin Bogner a5969ce15f llvm-isel-fuzzer: Handle a subset of backend flags in the executable name 
Here we add a secondary option parser to llvm-isel-fuzzer (and provide
it for use with other fuzzers). With this, you can copy the fuzzer to
a name like llvm-isel-fuzzer:aarch64-gisel for a fuzzer that fuzzer
AArch64 with GlobalISel enabled, or fuzzer:x86_64 to fuzz x86, with no
flags required. This should be useful for running these in OSS-Fuzz.

Note that this handrolls a subset of cl::opts to recognize, rather
than embedding a complete command parser for argv[0]. If we find we
really need the flexibility of handling arbitrary options at some
point we can rethink this.

llvm-svn: 315545
 2017-10-12 01:57:49 +00:00
Justin Bogner 7f28d732d2 Move some CLI utils out of llvm-isel-fuzzer and into the library 
FuzzMutate might not be the best place for these, but it makes more
sense than an entirely new library for now. This will make setting up
fuzz targets with consistent CLI handling easier.

llvm-svn: 312425
 2017-09-02 23:43:04 +00:00