sparse, llvm: Add support for logical ops

sparse, llvm: Add support for logical ops

The generated asm for logical-ops.c test case looks as follows on x86-64:

GCC 4.6:

  0000000000000000 <and_bool>:
     0:	31 c0                	xor    %eax,%eax
     2:	85 f6                	test   %esi,%esi
     4:	0f 95 c0             	setne  %al
     7:	31 d2                	xor    %edx,%edx
     9:	85 ff                	test   %edi,%edi
     b:	0f 95 c2             	setne  %dl
     e:	21 d0                	and    %edx,%eax
    10:	c3                   	retq

  0000000000000020 <uand_bool>:
    20:	31 c0                	xor    %eax,%eax
    22:	85 f6                	test   %esi,%esi
    24:	0f 95 c0             	setne  %al
    27:	31 d2                	xor    %edx,%edx
    29:	85 ff                	test   %edi,%edi
    2b:	0f 95 c2             	setne  %dl
    2e:	21 d0                	and    %edx,%eax
    30:	c3                   	retq

  0000000000000040 <or_bool>:
    40:	09 fe                	or     %edi,%esi
    42:	0f 95 c0             	setne  %al
    45:	0f b6 c0             	movzbl %al,%eax
    48:	c3                   	retq

  0000000000000050 <uor_bool>:
    50:	09 fe                	or     %edi,%esi
    52:	0f 95 c0             	setne  %al
    55:	0f b6 c0             	movzbl %al,%eax
    58:	c3                   	retq

Sparse/LLVM:

  0000000000000000 <and_bool>:
     0:	85 f6                	test   %esi,%esi
     2:	0f 95 c0             	setne  %al
     5:	85 ff                	test   %edi,%edi
     7:	0f 95 c1             	setne  %cl
     a:	20 c1                	and    %al,%cl
     c:	0f b6 c1             	movzbl %cl,%eax
     f:	c3                   	retq

  0000000000000010 <uand_bool>:
    10:	85 f6                	test   %esi,%esi
    12:	0f 95 c0             	setne  %al
    15:	85 ff                	test   %edi,%edi
    17:	0f 95 c1             	setne  %cl
    1a:	20 c1                	and    %al,%cl
    1c:	0f b6 c1             	movzbl %cl,%eax
    1f:	c3                   	retq

  0000000000000020 <or_bool>:
    20:	09 f7                	or     %esi,%edi
    22:	0f 95 c0             	setne  %al
    25:	0f b6 c0             	movzbl %al,%eax
    28:	c3                   	retq

  0000000000000030 <uor_bool>:
    30:	09 f7                	or     %esi,%edi
    32:	0f 95 c0             	setne  %al
    35:	0f b6 c0             	movzbl %al,%eax
    38:	c3                   	retq

Cc: Christopher Li <sparse@chrisli.org>
Cc: Jeff Garzik <jgarzik@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Pekka Enberg <penberg@kernel.org>