|  | // RUN: not llvm-mc -triple x86_64-unknown-unknown %s 2> %t.err | 
|  | // RUN: FileCheck --check-prefix=64 < %t.err %s | 
|  |  | 
|  | // RUN: not llvm-mc -triple i386-unknown-unknown %s 2> %t.err | 
|  | // RUN: FileCheck --check-prefix=32 < %t.err %s | 
|  | // rdar://8204588 | 
|  |  | 
|  | // 64: error: ambiguous instructions require an explicit suffix (could be 'cmpb', 'cmpw', 'cmpl', or 'cmpq') | 
|  | cmp $0, 0(%eax) | 
|  |  | 
|  | // 32: error: register %rax is only available in 64-bit mode | 
|  | addl $0, 0(%rax) | 
|  |  | 
|  | // 32: test.s:8:2: error: invalid instruction mnemonic 'movi' | 
|  |  | 
|  | # 8 "test.s" | 
|  | movi $8,%eax |