test_asm_mixed.cpp

// Most Clang cannot handle mixed asm with positional arguments, where the
// body is Intel style with no prefix and the templates are AT&T style.
// Also see https://bugs.llvm.org/show_bug.cgi?id=39895 .
#include <cstddef>
int main(int argc, char* argv[])
{
    size_t ret = 1, N = 1;
    asm __volatile__
    (
#if defined(__amd64__) || defined(__x86_64__)
        ".intel_syntax   noprefix ;\n"
        "xor rsi, rsi    ;\n"
        "neg %1          ;\n"
        "inc %1          ;\n"
        "push %1         ;\n"
        "pop rax         ;\n"
        ".att_syntax     prefix ;\n"
        : "=a" (ret) : "c" (N) : "%rsi"
#else
        ".intel_syntax   noprefix ;\n"
        "xor esi, esi    ;\n"
        "neg %1          ;\n"
        "inc %1          ;\n"
        "push %1         ;\n"
        "pop eax         ;\n"
        ".att_syntax     prefix ;\n"
        : "=a" (ret) : "c" (N) : "%esi"
#endif
    );
    return (int)ret;
}