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
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown | FileCheck %s
; SHLD/SHRD manual shifts
define i64 @test1(i64 %hi, i64 %lo, i64 %bits) nounwind {
; CHECK-LABEL: test1:
; CHECK: # %bb.0:
; CHECK-NEXT: andl $63, %edx
; CHECK-NEXT: movl %edx, %ecx
; CHECK-NEXT: shldq %cl, %rsi, %rdi
; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: retq
%and = and i64 %bits, 63
%and64 = sub i64 64, %and
%sh_lo = lshr i64 %lo, %and64
%sh_hi = shl i64 %hi, %and
%sh = or i64 %sh_lo, %sh_hi
ret i64 %sh
}
define i64 @test2(i64 %hi, i64 %lo, i64 %bits) nounwind {
; CHECK-LABEL: test2:
; CHECK: # %bb.0:
; CHECK-NEXT: andl $63, %edx
; CHECK-NEXT: movl %edx, %ecx
; CHECK-NEXT: shrdq %cl, %rdi, %rsi
; CHECK-NEXT: movq %rsi, %rax
; CHECK-NEXT: retq
%and = and i64 %bits, 63
%and64 = sub i64 64, %and
%sh_lo = shl i64 %hi, %and64
%sh_hi = lshr i64 %lo, %and
%sh = or i64 %sh_lo, %sh_hi
ret i64 %sh
}
define i64 @test3(i64 %hi, i64 %lo, i64 %bits) nounwind {
; CHECK-LABEL: test3:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edx, %ecx
; CHECK-NEXT: shldq %cl, %rsi, %rdi
; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: retq
%bits64 = sub i64 64, %bits
%sh_lo = lshr i64 %lo, %bits64
%sh_hi = shl i64 %hi, %bits
%sh = or i64 %sh_lo, %sh_hi
ret i64 %sh
}
define i64 @test4(i64 %hi, i64 %lo, i64 %bits) nounwind {
; CHECK-LABEL: test4:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edx, %ecx
; CHECK-NEXT: shrdq %cl, %rdi, %rsi
; CHECK-NEXT: movq %rsi, %rax
; CHECK-NEXT: retq
%bits64 = sub i64 64, %bits
%sh_lo = shl i64 %hi, %bits64
%sh_hi = lshr i64 %lo, %bits
%sh = or i64 %sh_lo, %sh_hi
ret i64 %sh
}
define i64 @test5(i64 %hi, i64 %lo, i64 %bits) nounwind {
; CHECK-LABEL: test5:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edx, %ecx
; CHECK-NEXT: shldq %cl, %rsi, %rdi
; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: retq
%bits64 = xor i64 %bits, 63
%lo2 = lshr i64 %lo, 1
%sh_lo = lshr i64 %lo2, %bits64
%sh_hi = shl i64 %hi, %bits
%sh = or i64 %sh_lo, %sh_hi
ret i64 %sh
}
define i64 @test6(i64 %hi, i64 %lo, i64 %bits) nounwind {
; CHECK-LABEL: test6:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edx, %ecx
; CHECK-NEXT: shrdq %cl, %rsi, %rdi
; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: retq
%bits64 = xor i64 %bits, 63
%lo2 = shl i64 %lo, 1
%sh_lo = shl i64 %lo2, %bits64
%sh_hi = lshr i64 %hi, %bits
%sh = or i64 %sh_lo, %sh_hi
ret i64 %sh
}
define i64 @test7(i64 %hi, i64 %lo, i64 %bits) nounwind {
; CHECK-LABEL: test7:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edx, %ecx
; CHECK-NEXT: shrdq %cl, %rsi, %rdi
; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: retq
%bits64 = xor i64 %bits, 63
%lo2 = add i64 %lo, %lo
%sh_lo = shl i64 %lo2, %bits64
%sh_hi = lshr i64 %hi, %bits
%sh = or i64 %sh_lo, %sh_hi
ret i64 %sh
}
|