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Questions - llvm

Why does llvm-config disables exceptions for me?

I was compiling a code using LLVM and it failed compiling: In file included from main.cpp:8: In file included from /usr/lib/llvm-12/include/llvm/IR/LLVMContext.h:19: In file included from /usr/lib/llv...
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ar2015

llvm

llvm-c++-api

llvm-config

Votes: 0

Answers: 0

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Undefined reference to klee when building s2e

I'm trying to start a new prject and build s2e in a new directory. But at arounf the 100% mark, it gives me an undefined reference error. The relevant part (imo) is this: [ 92%] Linking CXX executabl...
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mrZ

cmake

makefile

llvm

reverse-engineering

klee

Votes: 0

Answers: 1

Latest Answer

I had the exact same error and solved it with: sudo apt install gcc-9 g++-9 Also check to make sure clang selects the installed gcc-9 toolchain: $ PATH_TO_S2E/install/bin/clang++ -v ... Selected GCC ...
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ssssay

clang - Verify embeding of bitcode

I'm currently compiling the libint library. This release to be specific. During the process, an libint2.a archive is created. I'd like to add the right compile flags such that the llvm-bc will be embe...
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ZuseZ3

c++

clang

llvm

archive

Votes: 0

Answers: 0

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Is there a backend optimizer in LLVM?

I can get the optimization level from the command llc -help -O=<char> - Optimization level. [-O0, -O1, -O2, or -O3] (default = '-O2') I want to know what the optimization does exa...
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Shane

c++

c

compiler-construction

llvm

Votes: 0

Answers: 1

Latest Answer

Apparently there are backend optimizers options in llvm. They are however not well documented [1,2]. The TargetMachine [3] class has functions getOptLevel and setOptLevel to set an optimization level ...
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Jakob Stark

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