/
combined-partial-overwrites.ll
239 lines (190 loc) · 7.39 KB
/
combined-partial-overwrites.ll
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
235
236
237
238
239
; RUN: opt -S -dse -enable-dse-partial-store-merging=false < %s | FileCheck %s
target datalayout = "E-m:e-i64:64-n32:64"
target triple = "powerpc64-bgq-linux"
%"struct.std::complex" = type { { float, float } }
define void @_Z4testSt7complexIfE(%"struct.std::complex"* noalias nocapture sret %agg.result, i64 %c.coerce) {
entry:
; CHECK-LABEL: @_Z4testSt7complexIfE
%ref.tmp = alloca i64, align 8
%tmpcast = bitcast i64* %ref.tmp to %"struct.std::complex"*
%c.sroa.0.0.extract.shift = lshr i64 %c.coerce, 32
%c.sroa.0.0.extract.trunc = trunc i64 %c.sroa.0.0.extract.shift to i32
%0 = bitcast i32 %c.sroa.0.0.extract.trunc to float
%c.sroa.2.0.extract.trunc = trunc i64 %c.coerce to i32
%1 = bitcast i32 %c.sroa.2.0.extract.trunc to float
call void @_Z3barSt7complexIfE(%"struct.std::complex"* nonnull sret %tmpcast, i64 %c.coerce)
%2 = bitcast %"struct.std::complex"* %agg.result to i64*
%3 = load i64, i64* %ref.tmp, align 8
store i64 %3, i64* %2, align 4
; CHECK-NOT: store i64
%_M_value.realp.i.i = getelementptr inbounds %"struct.std::complex", %"struct.std::complex"* %agg.result, i64 0, i32 0, i32 0
%4 = lshr i64 %3, 32
%5 = trunc i64 %4 to i32
%6 = bitcast i32 %5 to float
%_M_value.imagp.i.i = getelementptr inbounds %"struct.std::complex", %"struct.std::complex"* %agg.result, i64 0, i32 0, i32 1
%7 = trunc i64 %3 to i32
%8 = bitcast i32 %7 to float
%mul_ad.i.i = fmul fast float %6, %1
%mul_bc.i.i = fmul fast float %8, %0
%mul_i.i.i = fadd fast float %mul_ad.i.i, %mul_bc.i.i
%mul_ac.i.i = fmul fast float %6, %0
%mul_bd.i.i = fmul fast float %8, %1
%mul_r.i.i = fsub fast float %mul_ac.i.i, %mul_bd.i.i
store float %mul_r.i.i, float* %_M_value.realp.i.i, align 4
store float %mul_i.i.i, float* %_M_value.imagp.i.i, align 4
ret void
; CHECK: ret void
}
declare void @_Z3barSt7complexIfE(%"struct.std::complex"* sret, i64)
define void @test1(i32 *%ptr) {
entry:
; CHECK-LABEL: @test1
store i32 5, i32* %ptr
%bptr = bitcast i32* %ptr to i8*
store i8 7, i8* %bptr
%wptr = bitcast i32* %ptr to i16*
store i16 -30062, i16* %wptr
%bptr2 = getelementptr inbounds i8, i8* %bptr, i64 2
store i8 25, i8* %bptr2
%bptr3 = getelementptr inbounds i8, i8* %bptr, i64 3
store i8 47, i8* %bptr3
%bptr1 = getelementptr inbounds i8, i8* %bptr, i64 1
%wptrp = bitcast i8* %bptr1 to i16*
store i16 2020, i16* %wptrp, align 1
ret void
; CHECK-NOT: store i32 5, i32* %ptr
; CHECK-NOT: store i8 7, i8* %bptr
; CHECK: store i16 -30062, i16* %wptr
; CHECK-NOT: store i8 25, i8* %bptr2
; CHECK: store i8 47, i8* %bptr3
; CHECK: store i16 2020, i16* %wptrp, align 1
; CHECK: ret void
}
define void @test2(i32 *%ptr) {
entry:
; CHECK-LABEL: @test2
store i32 5, i32* %ptr
%bptr = bitcast i32* %ptr to i8*
%bptrm1 = getelementptr inbounds i8, i8* %bptr, i64 -1
%bptr1 = getelementptr inbounds i8, i8* %bptr, i64 1
%bptr2 = getelementptr inbounds i8, i8* %bptr, i64 2
%bptr3 = getelementptr inbounds i8, i8* %bptr, i64 3
%wptr = bitcast i8* %bptr to i16*
%wptrm1 = bitcast i8* %bptrm1 to i16*
%wptr1 = bitcast i8* %bptr1 to i16*
%wptr2 = bitcast i8* %bptr2 to i16*
%wptr3 = bitcast i8* %bptr3 to i16*
store i16 1456, i16* %wptrm1, align 1
store i16 1346, i16* %wptr, align 1
store i16 1756, i16* %wptr1, align 1
store i16 1126, i16* %wptr2, align 1
store i16 5656, i16* %wptr3, align 1
; CHECK-NOT: store i32 5, i32* %ptr
; CHECK: store i16 1456, i16* %wptrm1, align 1
; CHECK: store i16 1346, i16* %wptr, align 1
; CHECK: store i16 1756, i16* %wptr1, align 1
; CHECK: store i16 1126, i16* %wptr2, align 1
; CHECK: store i16 5656, i16* %wptr3, align 1
ret void
; CHECK: ret void
}
define signext i8 @test3(i32 *%ptr) {
entry:
; CHECK-LABEL: @test3
store i32 5, i32* %ptr
%bptr = bitcast i32* %ptr to i8*
%bptrm1 = getelementptr inbounds i8, i8* %bptr, i64 -1
%bptr1 = getelementptr inbounds i8, i8* %bptr, i64 1
%bptr2 = getelementptr inbounds i8, i8* %bptr, i64 2
%bptr3 = getelementptr inbounds i8, i8* %bptr, i64 3
%wptr = bitcast i8* %bptr to i16*
%wptrm1 = bitcast i8* %bptrm1 to i16*
%wptr1 = bitcast i8* %bptr1 to i16*
%wptr2 = bitcast i8* %bptr2 to i16*
%wptr3 = bitcast i8* %bptr3 to i16*
%v = load i8, i8* %bptr, align 1
store i16 1456, i16* %wptrm1, align 1
store i16 1346, i16* %wptr, align 1
store i16 1756, i16* %wptr1, align 1
store i16 1126, i16* %wptr2, align 1
store i16 5656, i16* %wptr3, align 1
; CHECK: store i32 5, i32* %ptr
ret i8 %v
; CHECK: ret i8 %v
}
%struct.foostruct = type {
i32 (i8*, i8**, i32, i8, i8*)*,
i32 (i8*, i8**, i32, i8, i8*)*,
i32 (i8*, i8**, i32, i8, i8*)*,
i32 (i8*, i8**, i32, i8, i8*)*,
void (i8*, i32, i32)*
}
declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1)
declare void @goFunc(%struct.foostruct*)
declare i32 @fa(i8*, i8**, i32, i8, i8*)
define void @test4() {
entry:
; CHECK-LABEL: @test4
%bang = alloca %struct.foostruct, align 8
%v1 = bitcast %struct.foostruct* %bang to i8*
call void @llvm.memset.p0i8.i64(i8* %v1, i8 0, i64 40, i32 8, i1 false)
%v2 = getelementptr inbounds %struct.foostruct, %struct.foostruct* %bang, i64 0, i32 0
store i32 (i8*, i8**, i32, i8, i8*)* @fa, i32 (i8*, i8**, i32, i8, i8*)** %v2, align 8
%v3 = getelementptr inbounds %struct.foostruct, %struct.foostruct* %bang, i64 0, i32 1
store i32 (i8*, i8**, i32, i8, i8*)* @fa, i32 (i8*, i8**, i32, i8, i8*)** %v3, align 8
%v4 = getelementptr inbounds %struct.foostruct, %struct.foostruct* %bang, i64 0, i32 2
store i32 (i8*, i8**, i32, i8, i8*)* @fa, i32 (i8*, i8**, i32, i8, i8*)** %v4, align 8
%v5 = getelementptr inbounds %struct.foostruct, %struct.foostruct* %bang, i64 0, i32 3
store i32 (i8*, i8**, i32, i8, i8*)* @fa, i32 (i8*, i8**, i32, i8, i8*)** %v5, align 8
%v6 = getelementptr inbounds %struct.foostruct, %struct.foostruct* %bang, i64 0, i32 4
store void (i8*, i32, i32)* null, void (i8*, i32, i32)** %v6, align 8
call void @goFunc(%struct.foostruct* %bang)
ret void
; CHECK-NOT: memset
; CHECK: ret void
}
define signext i8 @test5(i32 *%ptr) {
entry:
; CHECK-LABEL: @test5
store i32 0, i32* %ptr
%bptr = bitcast i32* %ptr to i8*
%bptr1 = getelementptr inbounds i8, i8* %bptr, i64 1
%bptr2 = getelementptr inbounds i8, i8* %bptr, i64 2
%bptr3 = getelementptr inbounds i8, i8* %bptr, i64 3
%wptr = bitcast i8* %bptr to i16*
%wptr1 = bitcast i8* %bptr1 to i16*
%wptr2 = bitcast i8* %bptr2 to i16*
store i16 65535, i16* %wptr2, align 1
store i16 1456, i16* %wptr1, align 1
store i16 1346, i16* %wptr, align 1
; CHECK-NOT: store i32 0, i32* %ptr
ret i8 0
}
define signext i8 @test6(i32 *%ptr) {
entry:
; CHECK-LABEL: @test6
store i32 0, i32* %ptr
%bptr = bitcast i32* %ptr to i16*
%bptr1 = getelementptr inbounds i16, i16* %bptr, i64 0
%bptr2 = getelementptr inbounds i16, i16* %bptr, i64 1
store i16 1456, i16* %bptr2, align 1
store i16 65535, i16* %bptr1, align 1
; CHECK-NOT: store i32 0, i32* %ptr
ret i8 0
}
define signext i8 @test7(i64 *%ptr) {
entry:
; CHECK-LABEL: @test7
store i64 0, i64* %ptr
%bptr = bitcast i64* %ptr to i16*
%bptr1 = getelementptr inbounds i16, i16* %bptr, i64 0
%bptr2 = getelementptr inbounds i16, i16* %bptr, i64 1
%bptr3 = getelementptr inbounds i16, i16* %bptr, i64 2
%bptr4 = getelementptr inbounds i16, i16* %bptr, i64 3
store i16 1346, i16* %bptr1, align 1
store i16 1756, i16* %bptr3, align 1
store i16 1456, i16* %bptr2, align 1
store i16 5656, i16* %bptr4, align 1
; CHECK-NOT: store i64 0, i64* %ptr
ret i8 0
}