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
|
; RUN: llc < %s -mtriple=i386-apple-darwin -relocation-model=pic -frame-pointer=all | FileCheck %s -check-prefix=X86-32
; RUN: llc < %s -mtriple=x86_64-apple-darwin -relocation-model=pic -frame-pointer=all | FileCheck %s -check-prefix=X86-64
; MachineLICM should be able to hoist loop invariant reload out of the loop.
; Only linear scan needs this, -regalloc=greedy sinks the spill instead.
; rdar://7233099
%struct.FILE = type { ptr, i32, i32, i16, i16, %struct.__sbuf, i32, ptr, ptr, ptr, ptr, ptr, %struct.__sbuf, ptr, i32, [3 x i8], [1 x i8], %struct.__sbuf, i32, i64 }
%struct.__sFILEX = type opaque
%struct.__sbuf = type { ptr, i32 }
%struct.epoch_t = type { ptr, ptr, i32, i32, i32, i32, i32 }
%struct.trans_t = type { i32, i32, i32, ptr }
@.str12 = external constant [2 x i8], align 1 ; <ptr> [#uses=1]
@.str19 = external constant [7 x i8], align 1 ; <ptr> [#uses=1]
@.str24 = external constant [4 x i8], align 1 ; <ptr> [#uses=1]
define i32 @t1(i32 %c, ptr nocapture %v) nounwind ssp {
; X86-32-LABEL: t1:
entry:
br i1 undef, label %bb, label %bb3
bb: ; preds = %entry
unreachable
bb3: ; preds = %entry
br i1 undef, label %bb.i, label %bb.nph41
bb.i: ; preds = %bb3
unreachable
bb.nph41: ; preds = %bb3
%0 = call ptr @"\01_fopen$UNIX2003"(ptr undef, ptr @.str12) nounwind ; <ptr> [#uses=3]
br i1 undef, label %bb4, label %bb5.preheader
bb5.preheader: ; preds = %bb.nph41
br label %bb5
bb4: ; preds = %bb.nph41
unreachable
bb5: ; preds = %bb5, %bb5.preheader
br i1 undef, label %bb7, label %bb5
bb7: ; preds = %bb5
br i1 undef, label %bb9, label %bb12
bb9: ; preds = %bb7
unreachable
bb12: ; preds = %bb7
br i1 undef, label %bb16, label %bb22
bb16: ; preds = %bb12
unreachable
bb22: ; preds = %bb12
br label %bb.i1
bb.i1: ; preds = %bb.i1, %bb22
%1 = icmp eq i8 undef, 69 ; <i1> [#uses=1]
br i1 %1, label %imix_test.exit, label %bb.i1
imix_test.exit: ; preds = %bb.i1
br i1 undef, label %bb23, label %bb26.preheader
bb26.preheader: ; preds = %imix_test.exit
br i1 undef, label %bb28, label %bb30
bb23: ; preds = %imix_test.exit
unreachable
; Verify that there are no loads inside the loop.
; X86-32: .p2align 4
; X86-32: %bb28
; X86-32-NOT: (%esp),
; X86-32-NOT: (%ebp),
; X86-32: jmp
bb28: ; preds = %bb28, %bb26.preheader
%counter.035 = phi i32 [ %3, %bb28 ], [ 0, %bb26.preheader ] ; <i32> [#uses=2]
%tmp56 = shl i32 %counter.035, 2 ; <i32> [#uses=0]
%2 = call ptr @fgets(ptr undef, i32 50, ptr %0) nounwind ; <ptr> [#uses=0]
%3 = add nsw i32 %counter.035, 1 ; <i32> [#uses=1]
%4 = call i32 @feof(ptr %0) nounwind ; <i32> [#uses=0]
br label %bb28
bb30: ; preds = %bb26.preheader
%5 = call i32 @strcmp(ptr undef, ptr @.str19) nounwind readonly ; <i32> [#uses=0]
br i1 undef, label %bb34, label %bb70
bb32.loopexit: ; preds = %bb45
%6 = icmp eq i32 undef, 0 ; <i1> [#uses=1]
%indvar.next55 = add i32 %indvar54, 1 ; <i32> [#uses=1]
br i1 %6, label %bb34, label %bb70
bb34: ; preds = %bb32.loopexit, %bb30
%indvar54 = phi i32 [ %indvar.next55, %bb32.loopexit ], [ 0, %bb30 ] ; <i32> [#uses=3]
br i1 false, label %bb35, label %bb39.preheader
bb35: ; preds = %bb34
unreachable
bb39.preheader: ; preds = %bb34
%7 = getelementptr inbounds %struct.epoch_t, ptr undef, i32 %indvar54, i32 3 ; <ptr> [#uses=1]
%8 = getelementptr inbounds %struct.epoch_t, ptr undef, i32 %indvar54, i32 2 ; <ptr> [#uses=0]
br i1 false, label %bb42, label %bb45
bb42: ; preds = %bb39.preheader
unreachable
bb45: ; preds = %bb39.preheader
%9 = call i32 @strcmp(ptr undef, ptr @.str24) nounwind readonly ; <i32> [#uses=0]
br i1 false, label %bb47, label %bb32.loopexit
bb47: ; preds = %bb45
%10 = load i32, ptr %7, align 4 ; <i32> [#uses=0]
unreachable
bb70: ; preds = %bb32.loopexit, %bb30
br i1 undef, label %bb78, label %bb76
bb76: ; preds = %bb70
unreachable
bb78: ; preds = %bb70
br i1 undef, label %bb83, label %bb79
bb79: ; preds = %bb78
unreachable
bb83: ; preds = %bb78
call void @rewind(ptr %0) nounwind
unreachable
}
declare ptr @"\01_fopen$UNIX2003"(ptr, ptr)
declare ptr @fgets(ptr, i32, ptr nocapture) nounwind
declare void @rewind(ptr nocapture) nounwind
declare i32 @feof(ptr nocapture) nounwind
declare i32 @strcmp(ptr nocapture, ptr nocapture) nounwind readonly
@map_4_to_16 = external constant [16 x i16], align 32 ; <ptr> [#uses=2]
define void @t2(ptr nocapture %bufp, ptr nocapture %data, i32 %dsize) nounwind ssp {
; X86-64-LABEL: t2:
entry:
br i1 undef, label %return, label %bb.nph
bb.nph: ; preds = %entry
; X86-64: movq _map_4_to_16@GOTPCREL(%rip)
; X86-64: .p2align 4
%tmp5 = zext i32 undef to i64 ; <i64> [#uses=1]
%tmp6 = add i64 %tmp5, 1 ; <i64> [#uses=1]
%tmp11 = shl i64 undef, 1 ; <i64> [#uses=1]
%tmp14 = mul i64 undef, 3 ; <i64> [#uses=1]
br label %bb
bb: ; preds = %bb, %bb.nph
%tmp9 = mul i64 undef, undef ; <i64> [#uses=2]
%tmp12 = add i64 %tmp11, %tmp9 ; <i64> [#uses=1]
%scevgep13 = getelementptr i8, ptr %bufp, i64 %tmp12 ; <ptr> [#uses=1]
%tmp15 = add i64 %tmp14, %tmp9 ; <i64> [#uses=1]
%scevgep16 = getelementptr i8, ptr %bufp, i64 %tmp15 ; <ptr> [#uses=1]
%0 = load i8, ptr undef, align 1 ; <i8> [#uses=1]
%1 = zext i8 %0 to i32 ; <i32> [#uses=1]
%2 = getelementptr inbounds [16 x i16], ptr @map_4_to_16, i64 0, i64 0 ; <ptr> [#uses=1]
%3 = load i16, ptr %2, align 2 ; <i16> [#uses=1]
%4 = trunc i16 %3 to i8 ; <i8> [#uses=1]
store i8 %4, ptr undef, align 1
%5 = and i32 %1, 15 ; <i32> [#uses=1]
%6 = zext i32 %5 to i64 ; <i64> [#uses=1]
%7 = getelementptr inbounds [16 x i16], ptr @map_4_to_16, i64 0, i64 %6 ; <ptr> [#uses=1]
%8 = load i16, ptr %7, align 2 ; <i16> [#uses=2]
%9 = lshr i16 %8, 8 ; <i16> [#uses=1]
%10 = trunc i16 %9 to i8 ; <i8> [#uses=1]
store i8 %10, ptr %scevgep13, align 1
%11 = trunc i16 %8 to i8 ; <i8> [#uses=1]
store i8 %11, ptr %scevgep16, align 1
%exitcond = icmp eq i64 undef, %tmp6 ; <i1> [#uses=1]
br i1 %exitcond, label %return, label %bb
return: ; preds = %bb, %entry
ret void
}
|
