[LLVMbugs] [Bug 8936] New: [MC x86] does not know xcryptecb instruction

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=8936

           Summary: [MC x86] does not know xcryptecb instruction
           Product: new-bugs
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: kaffeemonster at googlemail.com
                CC: llvmbugs at cs.uiuc.edu


TOT at 123092

struct aes_encrypt_ctx
{
    unsigned k[(11*16)/4];
} __attribute__((aligned(16)));

void aes_ecb_encrypt_padlock(const struct aes_encrypt_ctx *ctx, void *out,
const void *in)
{
    static const unsigned control_word[4] __attribute__((aligned(16))) =
        {138, 0, 0, 0};
    unsigned c, S, D;

    asm(
            "rep xcryptecb\n\t"
        : /* %0 */ "=S" (S),
          /* %1 */ "=D" (D),
          /* %2 */ "=c" (c),
          /* %4 */ "=m" (*(char *)out)
        : /* %4 */ "d" (control_word),
          /* %5 */ "b" (&ctx->k),
          /* %6 */ "2" (1),
          /* %7 */ "0" (in),
          /* %8 */ "1" (out),
          /* %9 */ "m" (*(const char *)in)
    );
}

$ clang -c xcryptecb.c 
xcryptecb.c:13:4: error: invalid instruction mnemonic 'xcryptecb'
                        "rep xcryptecb\n\t"
                        ^
<inline asm>:1:6: note: instantiated into assembly here
        rep xcryptecb
            ^
1 error generated.

Greetings
Jan

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