1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
; All of these ands and shifts should be folded into rlwimi's
; RUN: llvm-as < %s | llc -march=ppc32 -o %t -f
; RUN: not grep and %t
; RUN: not grep srawi %t
; RUN: not grep srwi %t
; RUN: not grep slwi %t
; RUN: grep rlwinm %t | count 8
define i32 @test1(i32 %a) {
entry:
%tmp.1 = and i32 %a, 268431360 ; <i32> [#uses=1]
ret i32 %tmp.1
}
define i32 @test2(i32 %a) {
entry:
%tmp.1 = and i32 %a, -268435441 ; <i32> [#uses=1]
ret i32 %tmp.1
}
define i32 @test3(i32 %a) {
entry:
%tmp.2 = ashr i32 %a, 8 ; <i32> [#uses=1]
%tmp.3 = and i32 %tmp.2, 255 ; <i32> [#uses=1]
ret i32 %tmp.3
}
define i32 @test4(i32 %a) {
entry:
%tmp.3 = lshr i32 %a, 8 ; <i32> [#uses=1]
%tmp.4 = and i32 %tmp.3, 255 ; <i32> [#uses=1]
ret i32 %tmp.4
}
define i32 @test5(i32 %a) {
entry:
%tmp.2 = shl i32 %a, 8 ; <i32> [#uses=1]
%tmp.3 = and i32 %tmp.2, -8388608 ; <i32> [#uses=1]
ret i32 %tmp.3
}
define i32 @test6(i32 %a) {
entry:
%tmp.1 = and i32 %a, 65280 ; <i32> [#uses=1]
%tmp.2 = ashr i32 %tmp.1, 8 ; <i32> [#uses=1]
ret i32 %tmp.2
}
define i32 @test7(i32 %a) {
entry:
%tmp.1 = and i32 %a, 65280 ; <i32> [#uses=1]
%tmp.2 = lshr i32 %tmp.1, 8 ; <i32> [#uses=1]
ret i32 %tmp.2
}
define i32 @test8(i32 %a) {
entry:
%tmp.1 = and i32 %a, 16711680 ; <i32> [#uses=1]
%tmp.2 = shl i32 %tmp.1, 8 ; <i32> [#uses=1]
ret i32 %tmp.2
}
|
