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
110
111
112
113
114
115
116
117
|
; RUN: llc -mtriple=aarch64-apple-darwin -fast-isel -verify-machineinstrs < %s | FileCheck %s
;
; Test folding of the sign-/zero-extend into the load instruction.
;
; Unscaled
define i32 @load_unscaled_zext_i8_to_i32(i64 %a) {
; CHECK-LABEL: load_unscaled_zext_i8_to_i32
; CHECK: ldurb [[REG:w[0-9]+]], [x0, #-8]
; CHECK: uxtb w0, [[REG]]
%1 = sub i64 %a, 8
%2 = inttoptr i64 %1 to i8 addrspace(256)*
%3 = load i8, i8 addrspace(256)* %2
%4 = zext i8 %3 to i32
ret i32 %4
}
define i32 @load_unscaled_zext_i16_to_i32(i64 %a) {
; CHECK-LABEL: load_unscaled_zext_i16_to_i32
; CHECK: ldurh [[REG:w[0-9]+]], [x0, #-8]
; CHECK: uxth w0, [[REG]]
%1 = sub i64 %a, 8
%2 = inttoptr i64 %1 to i16 addrspace(256)*
%3 = load i16, i16 addrspace(256)* %2
%4 = zext i16 %3 to i32
ret i32 %4
}
define i64 @load_unscaled_zext_i8_to_i64(i64 %a) {
; CHECK-LABEL: load_unscaled_zext_i8_to_i64
; CHECK: ldurb w[[REG:[0-9]+]], [x0, #-8]
; CHECK: ubfx x0, x[[REG]], #0, #8
%1 = sub i64 %a, 8
%2 = inttoptr i64 %1 to i8 addrspace(256)*
%3 = load i8, i8 addrspace(256)* %2
%4 = zext i8 %3 to i64
ret i64 %4
}
define i64 @load_unscaled_zext_i16_to_i64(i64 %a) {
; CHECK-LABEL: load_unscaled_zext_i16_to_i64
; CHECK: ldurh w[[REG:[0-9]+]], [x0, #-8]
; CHECK: ubfx x0, x[[REG]], #0, #16
%1 = sub i64 %a, 8
%2 = inttoptr i64 %1 to i16 addrspace(256)*
%3 = load i16, i16 addrspace(256)* %2
%4 = zext i16 %3 to i64
ret i64 %4
}
define i64 @load_unscaled_zext_i32_to_i64(i64 %a) {
; CHECK-LABEL: load_unscaled_zext_i32_to_i64
; CHECK: ldur w[[REG:[0-9]+]], [x0, #-8]
; CHECK: ubfx x0, x[[REG]], #0, #32
%1 = sub i64 %a, 8
%2 = inttoptr i64 %1 to i32 addrspace(256)*
%3 = load i32, i32 addrspace(256)* %2
%4 = zext i32 %3 to i64
ret i64 %4
}
define i32 @load_unscaled_sext_i8_to_i32(i64 %a) {
; CHECK-LABEL: load_unscaled_sext_i8_to_i32
; CHECK: ldurb [[REG:w[0-9]+]], [x0, #-8]
; CHECK: sxtb w0, [[REG]]
%1 = sub i64 %a, 8
%2 = inttoptr i64 %1 to i8 addrspace(256)*
%3 = load i8, i8 addrspace(256)* %2
%4 = sext i8 %3 to i32
ret i32 %4
}
define i32 @load_unscaled_sext_i16_to_i32(i64 %a) {
; CHECK-LABEL: load_unscaled_sext_i16_to_i32
; CHECK: ldurh [[REG:w[0-9]+]], [x0, #-8]
; CHECK: sxth w0, [[REG]]
%1 = sub i64 %a, 8
%2 = inttoptr i64 %1 to i16 addrspace(256)*
%3 = load i16, i16 addrspace(256)* %2
%4 = sext i16 %3 to i32
ret i32 %4
}
define i64 @load_unscaled_sext_i8_to_i64(i64 %a) {
; CHECK-LABEL: load_unscaled_sext_i8_to_i64
; CHECK: ldurb [[REG:w[0-9]+]], [x0, #-8]
; CHECK: sxtb x0, [[REG]]
%1 = sub i64 %a, 8
%2 = inttoptr i64 %1 to i8 addrspace(256)*
%3 = load i8, i8 addrspace(256)* %2
%4 = sext i8 %3 to i64
ret i64 %4
}
define i64 @load_unscaled_sext_i16_to_i64(i64 %a) {
; CHECK-LABEL: load_unscaled_sext_i16_to_i64
; CHECK: ldurh [[REG:w[0-9]+]], [x0, #-8]
; CHECK: sxth x0, [[REG]]
%1 = sub i64 %a, 8
%2 = inttoptr i64 %1 to i16 addrspace(256)*
%3 = load i16, i16 addrspace(256)* %2
%4 = sext i16 %3 to i64
ret i64 %4
}
define i64 @load_unscaled_sext_i32_to_i64(i64 %a) {
; CHECK-LABEL: load_unscaled_sext_i32_to_i64
; CHECK: ldur [[REG:w[0-9]+]], [x0, #-8]
; CHECK: sxtw x0, [[REG]]
%1 = sub i64 %a, 8
%2 = inttoptr i64 %1 to i32 addrspace(256)*
%3 = load i32, i32 addrspace(256)* %2
%4 = sext i32 %3 to i64
ret i64 %4
}
|
