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[libFuzzer] Enable for SystemZ

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* Add SystemZ to the list of supported architectures.

* XFAIL a few tests.

Coverage reporting is broken, and is not easy to fix (see comment in
coverage.test). Interaction with sanitizers needs to be investigated
more thoroughly, since they appear to reduce coverage in certain cases.
This commit is contained in:
Ilya Leoshkevich 2020-07-30 20:08:40 +02:00
parent 153df1373e
commit ea9b82da41
4 changed files with 7 additions and 1 deletions
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2
compiler-rt/cmake/config-ix.cmake
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@ -305,7 +305,7 @@ else()
endif()
if(OS_NAME MATCHES "Linux")
set(ALL_FUZZER_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM64})
set(ALL_FUZZER_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM64} ${S390X})
elseif (OS_NAME MATCHES "Windows")
set(ALL_FUZZER_SUPPORTED_ARCH ${X86} ${X86_64})
elseif(OS_NAME MATCHES "Android")

2
compiler-rt/test/fuzzer/coverage.test
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@ -1,5 +1,7 @@
# FIXME: Disabled on Windows because -fPIC cannot be used to compile for Windows.
UNSUPPORTED: windows
# FIXME: CreatePCArray() emits PLT stub addresses for entry blocks, which are ignored by TracePC::PrintCoverage().
XFAIL: s390x
RUN: %cpp_compiler -mllvm -use-unknown-locations=Disable %S/NullDerefTest.cpp -o %t-NullDerefTest
RUN: %cpp_compiler -mllvm -use-unknown-locations=Disable %S/DSO1.cpp -fPIC %ld_flags_rpath_so1 -O0 -shared -o %dynamiclib1
RUN: %cpp_compiler -mllvm -use-unknown-locations=Disable %S/DSO2.cpp -fPIC %ld_flags_rpath_so2 -O0 -shared -o %dynamiclib2

2
compiler-rt/test/fuzzer/msan.test
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@ -1,3 +1,5 @@
FIXME: Fails to find BINGO on s390x.
XFAIL: s390x
REQUIRES: msan
RUN: %msan_compiler %S/SimpleTestStdio.cpp -o %t
RUN: not %run %t -seed=1 -runs=10000000 2>&1 | FileCheck %s --check-prefix=NO-REPORT

2
compiler-rt/test/fuzzer/swap-cmp.test
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@ -1,3 +1,5 @@
# FIXME: Fails to find BINGO with ASAN on s390x, work fine without ASAN.
XFAIL: s390x
RUN: %cpp_compiler %S/SwapCmpTest.cpp -o %t-SwapCmpTest
CHECK: BINGO
RUN: not %run %t-SwapCmpTest -seed=1 -runs=10000000 2>&1 | FileCheck %s