gcc with neon

Hi

I add a piece of code in multimedia.

It makes data in array reverse.

It works, but when I add -O2 or -O3 the result is error and vmov with -O2 ,-O3 create illegal instruction.

I don't understand...

Is this a gcc bug??

asm volatile

  (

  "pld [%0, #0xFFF];\n\t\

  vldm %0!,{d0-d3};\n\t\

  vswp.32 d0,d3;\n\t\

  vswp.32 d1,d2;\n\t\

  VREV64.32 q0, q0;\n\t\

  VREV64.32 q1, q1;\n\t\

  vstm %1!,{d0-d3};"

  :

  :"r"(data),"r"(coeff),"r"(tmp),"r"(sum),"r"(ptr)

  :"d0", "d1","d2","d3","d4","d5","d6","d7"

  );

asm volatile

  (

  "pld [%0, #0xFFF];\n\t\

  vldm %0!,{d0-d3};\n\t\

  vldm %1!,{d4-d7};\n\t\

  VMUL.I32 d0,d0,d4;\n\t\

  VMUL.I32 d1,d1,d5;\n\t\

  VMUL.I32 d2,d2,d6;\n\t\

  VMUL.I32 d3,d3,d7;\n\t\

  VADD.I32 d0,d0,d1;\n\t\

  VADD.I32 d2,d2,d3;\n\t\

  VADD.I32 d0,d0,d2;\n\t\

  VMOV %2,%3,d0;\n\t\

  add %3,%3,%2;\n\t\

  str %3,[%4]"

  :

  :"r"(data),"r"(coeff),"r"(tmp),"r"(sum),"r"(ptr)

  :"d0", "d1","d2","d3","d4","d5","d6","d7"

  );