Hi, guys I am trying to separate the command form the clang, such as: test -msse4.1 sse_test.c -o sse_test test is just the sub program of the clang, but I not find how the sse command execute in the clang command. I just want to separate the command from clang, so it just a program that execute the sse code. if you know the execute flow about the SSE, please tell me. Thanks, yao -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20150317/3b648ca3/attachment.html>