问题
As this question shows, with g++, I can do g++ -S -masm=intel test.cpp.
Also, with clang, I can do clang++ -S test.cpp, but -masm=intel is not supported by clang (warning argument unused during compilation: -masm=intel). How do I get intel syntax with clang?
回答1:
As noted below by @thakis, newer versions of Clang (3.5+) accept the -masm=intel argument.
For older versions, this should get clang to emit assembly code with Intel syntax:
clang++ -S -mllvm --x86-asm-syntax=intel test.cpp
You can use -mllvm <arg> to pass in llvm options from the clang command line. Sadly this option doesn't appear to be well documented, and thus I only found it by browsing through the llvm mailing lists.
回答2:
As of clang r208683 (clang 3.5+), it understands -masm=intel. So if your clang is new enough, you can just use that.
回答3:
Presuming you can have Clang emit normal LLVM byte codes, you can then use llc to compile to assembly language, and use its --x86-asm-syntax=intel option to get the result in Intel syntax.
来源：https://stackoverflow.com/questions/10990018/how-to-generate-assembly-code-with-clang-in-intel-syntax