naclspadj instruction
naclspadj instruction

expands:
  naclspadj   $-0x20, %r15

to:
  lea    -0x20(%rbp),%esp
  add    %r15,%rsp

Review URL: http://codereview.chromium.org/552108

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@1378 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client