http://llvm.org/bugs/show_bug.cgi?id=20842
Bug ID: 20842
Summary: clang -fsanitize=address is extremely slow on
unittests/Support/ConvertUTFTest.cpp
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: C++
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected]
Classification: Unclassified
ASan bootstrap on the buildbot is currently broken because the compilation of
unittests/Support/ConvertUTFTest.cpp times out.
The guilty pass is MachineSinking::runOnMachineFunction()
The source file in question has 1500-line function with hundreds of EXPECT_TRUE
statements. I haven't yet figured out what change slowed things down that
significantly.
To reproduce, build LLVM with clang as a host compiler and
-DCMAKE_BUILD_TYPE=Release -DLLVM_USE_SANITIZER=Address and run "make
check-llvm"
(or just use preprocessed .cpp and .sh file attached).
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