Add "sub immediate" instruction to the ARM integrated assembler.

Add "sub immediate" instruction to the ARM integrated assembler.

BUG= https://code.google.com/p/nativeclient/issues/detail?id=4334
R=stichnot@chromium.org

Committed: https://gerrit.chromium.org/gerrit/gitweb?p=native_client/pnacl-subzero.git;a=commit;h=e34550538720950cf114f9a4e6e43ef25c7401e5

[Karl, 2015-10-13 22:01:03]

kschimpf@google.com changed reviewers:
+ jpp@chromium.org, stichnot@chromium.org

[Jim Stichnoth, 2015-10-14 17:00:35]

otherwise lgtm

https://chromiumcodereview.appspot.com/1388323003/diff/1/tests_lit/assembler/...
File tests_lit/assembler/arm32/sub.ll (right):

https://chromiumcodereview.appspot.com/1388323003/diff/1/tests_lit/assembler/...
tests_lit/assembler/arm32/sub.ll:17: ; ASM:	sub	r0, r0, #1
remove tab characters (probably from the add test as well)

[Karl, 2015-10-14 21:30:25]

Committed patchset #2 (id:20001) manually as
e34550538720950cf114f9a4e6e43ef25c7401e5 (presubmit successful).

[Karl, 2015-10-14 21:30:39]

https://chromiumcodereview.appspot.com/1388323003/diff/1/tests_lit/assembler/...
File tests_lit/assembler/arm32/sub.ll (right):

https://chromiumcodereview.appspot.com/1388323003/diff/1/tests_lit/assembler/...
tests_lit/assembler/arm32/sub.ll:17: ; ASM:	sub	r0, r0, #1
On 2015/10/14 17:00:35, stichnot wrote:
> remove tab characters (probably from the add test as well)

Done.