I checkouted to the branch rtlib , but the instrumenti

Sorry to disturb you. And I found the problem. In <code class="notra

instrumentation: Linking With a Runtime Library about llvm-pass-skeleton HOT 1 CLOSED

sampsyo commented on July 22, 2024

instrumentation: Linking With a Runtime Library

from llvm-pass-skeleton.

Comments (1)

LuoRongLuoRong commented on July 22, 2024

Sorry to disturb you. And I found the problem.

In rtlib branch, we need use both -flegacy-pass-manager and -c: clang -flegacy-pass-manager -Xclang -load -Xclang build/skeleton/libSkeletonPass.so -c example.c

(base) fdse@ubuntu:~/luorong/LLVM/test/llvm-pass-skeleton$ clang -Xclang -load -Xclanc build/skeleton/libSkeletonPass.so -c example.c
(base) fdse@ubuntu:~/luorong/LLVM/test/llvm-pass-skeleton$ cc example.o rtlib.o
(base) fdse@ubuntu:~/luorong/LLVM/test/llvm-pass-skeleton$ ./a.out
12
14
(base) fdse@ubuntu:~/luorong/LLVM/test/llvm-pass-skeleton$ clang  -flegacy-pass-manager  -Xclang -load -Xclang build/skeleton/libSkeletonPass.so example.c
/tmp/example-ff87fe.o: In function `main':
example.c:(.text+0x35): undefined reference to `logop'
clang-13: error: linker command failed with exit code 1 (use -v to see invocation)
(base) fdse@ubuntu:~/luorong/LLVM/test/llvm-pass-skeleton$ clang  -flegacy-pass-manager  -Xclang -load -Xclang build/skeleton/libSkeletonPass.so -c example.c
(base) fdse@ubuntu:~/luorong/LLVM/test/llvm-pass-skeleton$ cc example.o rtlib.o
(base) fdse@ubuntu:~/luorong/LLVM/test/llvm-pass-skeleton$ ./a.out
12
computed: 14
14