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
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
; RUN: llc < %s -march=arm64 -verify-machineinstrs | FileCheck %s
; RUN: llc < %s -march=arm64 -aarch64-unscaled-mem-op=true\
; RUN: -verify-machineinstrs | FileCheck -check-prefix=LDUR_CHK %s
; CHECK: ldp_int
; CHECK: ldp
define i32 @ldp_int(i32* %p) nounwind {
%tmp = load i32* %p, align 4
%add.ptr = getelementptr inbounds i32* %p, i64 1
%tmp1 = load i32* %add.ptr, align 4
%add = add nsw i32 %tmp1, %tmp
ret i32 %add
}
; CHECK: ldp_sext_int
; CHECK: ldpsw
define i64 @ldp_sext_int(i32* %p) nounwind {
%tmp = load i32* %p, align 4
%add.ptr = getelementptr inbounds i32* %p, i64 1
%tmp1 = load i32* %add.ptr, align 4
%sexttmp = sext i32 %tmp to i64
%sexttmp1 = sext i32 %tmp1 to i64
%add = add nsw i64 %sexttmp1, %sexttmp
ret i64 %add
}
; CHECK: ldp_long
; CHECK: ldp
define i64 @ldp_long(i64* %p) nounwind {
%tmp = load i64* %p, align 8
%add.ptr = getelementptr inbounds i64* %p, i64 1
%tmp1 = load i64* %add.ptr, align 8
%add = add nsw i64 %tmp1, %tmp
ret i64 %add
}
; CHECK: ldp_float
; CHECK: ldp
define float @ldp_float(float* %p) nounwind {
%tmp = load float* %p, align 4
%add.ptr = getelementptr inbounds float* %p, i64 1
%tmp1 = load float* %add.ptr, align 4
%add = fadd float %tmp, %tmp1
ret float %add
}
; CHECK: ldp_double
; CHECK: ldp
define double @ldp_double(double* %p) nounwind {
%tmp = load double* %p, align 8
%add.ptr = getelementptr inbounds double* %p, i64 1
%tmp1 = load double* %add.ptr, align 8
%add = fadd double %tmp, %tmp1
ret double %add
}
; Test the load/store optimizer---combine ldurs into a ldp, if appropriate
define i32 @ldur_int(i32* %a) nounwind {
; LDUR_CHK: ldur_int
; LDUR_CHK: ldp [[DST1:w[0-9]+]], [[DST2:w[0-9]+]], [x0, #-8]
; LDUR_CHK-NEXT: add w{{[0-9]+}}, [[DST2]], [[DST1]]
; LDUR_CHK-NEXT: ret
%p1 = getelementptr inbounds i32* %a, i32 -1
%tmp1 = load i32* %p1, align 2
%p2 = getelementptr inbounds i32* %a, i32 -2
%tmp2 = load i32* %p2, align 2
%tmp3 = add i32 %tmp1, %tmp2
ret i32 %tmp3
}
define i64 @ldur_sext_int(i32* %a) nounwind {
; LDUR_CHK: ldur_sext_int
; LDUR_CHK: ldpsw [[DST1:x[0-9]+]], [[DST2:x[0-9]+]], [x0, #-8]
; LDUR_CHK-NEXT: add x{{[0-9]+}}, [[DST2]], [[DST1]]
; LDUR_CHK-NEXT: ret
%p1 = getelementptr inbounds i32* %a, i32 -1
%tmp1 = load i32* %p1, align 2
%p2 = getelementptr inbounds i32* %a, i32 -2
%tmp2 = load i32* %p2, align 2
%sexttmp1 = sext i32 %tmp1 to i64
%sexttmp2 = sext i32 %tmp2 to i64
%tmp3 = add i64 %sexttmp1, %sexttmp2
ret i64 %tmp3
}
define i64 @ldur_long(i64* %a) nounwind ssp {
; LDUR_CHK: ldur_long
; LDUR_CHK: ldp [[DST1:x[0-9]+]], [[DST2:x[0-9]+]], [x0, #-16]
; LDUR_CHK-NEXT: add x{{[0-9]+}}, [[DST2]], [[DST1]]
; LDUR_CHK-NEXT: ret
%p1 = getelementptr inbounds i64* %a, i64 -1
%tmp1 = load i64* %p1, align 2
%p2 = getelementptr inbounds i64* %a, i64 -2
%tmp2 = load i64* %p2, align 2
%tmp3 = add i64 %tmp1, %tmp2
ret i64 %tmp3
}
define float @ldur_float(float* %a) {
; LDUR_CHK: ldur_float
; LDUR_CHK: ldp [[DST1:s[0-9]+]], [[DST2:s[0-9]+]], [x0, #-8]
; LDUR_CHK-NEXT: add s{{[0-9]+}}, [[DST2]], [[DST1]]
; LDUR_CHK-NEXT: ret
%p1 = getelementptr inbounds float* %a, i64 -1
%tmp1 = load float* %p1, align 2
%p2 = getelementptr inbounds float* %a, i64 -2
%tmp2 = load float* %p2, align 2
%tmp3 = fadd float %tmp1, %tmp2
ret float %tmp3
}
define double @ldur_double(double* %a) {
; LDUR_CHK: ldur_double
; LDUR_CHK: ldp [[DST1:d[0-9]+]], [[DST2:d[0-9]+]], [x0, #-16]
; LDUR_CHK-NEXT: add d{{[0-9]+}}, [[DST2]], [[DST1]]
; LDUR_CHK-NEXT: ret
%p1 = getelementptr inbounds double* %a, i64 -1
%tmp1 = load double* %p1, align 2
%p2 = getelementptr inbounds double* %a, i64 -2
%tmp2 = load double* %p2, align 2
%tmp3 = fadd double %tmp1, %tmp2
ret double %tmp3
}
; Now check some boundary conditions
define i64 @pairUpBarelyIn(i64* %a) nounwind ssp {
; LDUR_CHK: pairUpBarelyIn
; LDUR_CHK-NOT: ldur
; LDUR_CHK: ldp [[DST1:x[0-9]+]], [[DST2:x[0-9]+]], [x0, #-256]
; LDUR_CHK-NEXT: add x{{[0-9]+}}, [[DST2]], [[DST1]]
; LDUR_CHK-NEXT: ret
%p1 = getelementptr inbounds i64* %a, i64 -31
%tmp1 = load i64* %p1, align 2
%p2 = getelementptr inbounds i64* %a, i64 -32
%tmp2 = load i64* %p2, align 2
%tmp3 = add i64 %tmp1, %tmp2
ret i64 %tmp3
}
define i64 @pairUpBarelyInSext(i32* %a) nounwind ssp {
; LDUR_CHK: pairUpBarelyInSext
; LDUR_CHK-NOT: ldur
; LDUR_CHK: ldpsw [[DST1:x[0-9]+]], [[DST2:x[0-9]+]], [x0, #-256]
; LDUR_CHK-NEXT: add x{{[0-9]+}}, [[DST2]], [[DST1]]
; LDUR_CHK-NEXT: ret
%p1 = getelementptr inbounds i32* %a, i64 -63
%tmp1 = load i32* %p1, align 2
%p2 = getelementptr inbounds i32* %a, i64 -64
%tmp2 = load i32* %p2, align 2
%sexttmp1 = sext i32 %tmp1 to i64
%sexttmp2 = sext i32 %tmp2 to i64
%tmp3 = add i64 %sexttmp1, %sexttmp2
ret i64 %tmp3
}
define i64 @pairUpBarelyOut(i64* %a) nounwind ssp {
; LDUR_CHK: pairUpBarelyOut
; LDUR_CHK-NOT: ldp
; Don't be fragile about which loads or manipulations of the base register
; are used---just check that there isn't an ldp before the add
; LDUR_CHK: add
; LDUR_CHK-NEXT: ret
%p1 = getelementptr inbounds i64* %a, i64 -32
%tmp1 = load i64* %p1, align 2
%p2 = getelementptr inbounds i64* %a, i64 -33
%tmp2 = load i64* %p2, align 2
%tmp3 = add i64 %tmp1, %tmp2
ret i64 %tmp3
}
define i64 @pairUpBarelyOutSext(i32* %a) nounwind ssp {
; LDUR_CHK: pairUpBarelyOutSext
; LDUR_CHK-NOT: ldp
; Don't be fragile about which loads or manipulations of the base register
; are used---just check that there isn't an ldp before the add
; LDUR_CHK: add
; LDUR_CHK-NEXT: ret
%p1 = getelementptr inbounds i32* %a, i64 -64
%tmp1 = load i32* %p1, align 2
%p2 = getelementptr inbounds i32* %a, i64 -65
%tmp2 = load i32* %p2, align 2
%sexttmp1 = sext i32 %tmp1 to i64
%sexttmp2 = sext i32 %tmp2 to i64
%tmp3 = add i64 %sexttmp1, %sexttmp2
ret i64 %tmp3
}
define i64 @pairUpNotAligned(i64* %a) nounwind ssp {
; LDUR_CHK: pairUpNotAligned
; LDUR_CHK-NOT: ldp
; LDUR_CHK: ldur
; LDUR_CHK-NEXT: ldur
; LDUR_CHK-NEXT: add
; LDUR_CHK-NEXT: ret
%p1 = getelementptr inbounds i64* %a, i64 -18
%bp1 = bitcast i64* %p1 to i8*
%bp1p1 = getelementptr inbounds i8* %bp1, i64 1
%dp1 = bitcast i8* %bp1p1 to i64*
%tmp1 = load i64* %dp1, align 1
%p2 = getelementptr inbounds i64* %a, i64 -17
%bp2 = bitcast i64* %p2 to i8*
%bp2p1 = getelementptr inbounds i8* %bp2, i64 1
%dp2 = bitcast i8* %bp2p1 to i64*
%tmp2 = load i64* %dp2, align 1
%tmp3 = add i64 %tmp1, %tmp2
ret i64 %tmp3
}
define i64 @pairUpNotAlignedSext(i32* %a) nounwind ssp {
; LDUR_CHK: pairUpNotAlignedSext
; LDUR_CHK-NOT: ldp
; LDUR_CHK: ldursw
; LDUR_CHK-NEXT: ldursw
; LDUR_CHK-NEXT: add
; LDUR_CHK-NEXT: ret
%p1 = getelementptr inbounds i32* %a, i64 -18
%bp1 = bitcast i32* %p1 to i8*
%bp1p1 = getelementptr inbounds i8* %bp1, i64 1
%dp1 = bitcast i8* %bp1p1 to i32*
%tmp1 = load i32* %dp1, align 1
%p2 = getelementptr inbounds i32* %a, i64 -17
%bp2 = bitcast i32* %p2 to i8*
%bp2p1 = getelementptr inbounds i8* %bp2, i64 1
%dp2 = bitcast i8* %bp2p1 to i32*
%tmp2 = load i32* %dp2, align 1
%sexttmp1 = sext i32 %tmp1 to i64
%sexttmp2 = sext i32 %tmp2 to i64
%tmp3 = add i64 %sexttmp1, %sexttmp2
ret i64 %tmp3
}
|
