assembly - GAS Assembler operand type mismatch for `cmovz' -

i trying write simple assembly program. reason conditional moves seem give me error. if replace them normal mov instruction works. wrong following code?

    .section .data  supported:     .asciz "avx supported" notsupported:     .asciz "avx not supported"       .section .text     .global main main:     movq $1, %rax     cpuid     andq $0x10000000, %rcx     cmovnz $supported, %rdi     cmovz $notsupported, %rdi     callq puts      movq $0, %rax     ret cpuid.s:15: error: operand type mismatch `cmovnz' cpuid.s:16: error: operand type mismatch `cmovz' 

if @ description of cmovcc in intel's manual you'll see source operand needs r/m64 (i.e. 64-bit register or memory location). $supported , $notsupported immediates, , therefore not qualify r/m64.

you this:

movabs $notsupported,%rdi movabs $supported,%rbx testq $0x10000000, %rcx   # checks desired bit without clobbering %rcx cmovnz %rbx,%rdi