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>