prevent-hoisting.ll
8.16 KB
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
; RUN: llc -march=mipsel -O3 -relocation-model=pic < %s | FileCheck %s
; MIPS direct branches implicitly define register $at. This test makes sure that
; code hoisting optimization (which moves identical instructions at the start of
; two basic blocks to the common predecessor block) takes this into account and
; doesn't move definition of $at to the predecessor block (which would make $at
; live-in at the start of successor block).
; CHECK-LABEL: readLumaCoeff8x8_CABAC
; The check for first "addiu" instruction is added so that we can match the correct "b" instruction.
; CHECK: andi
; CHECK: b $[[BB0:BB[0-9_]+]]
; CHECK: sll
; Check that at the start of a fallthrough block there is a instruction that writes to $1.
; CHECK: {{%bb.[0-9]+}}:
; CHECK: sll $1, $[[R0:[0-9]+]], 4
; CHECK: lw $[[R1:[0-9]+]], %got(assignSE2partition)($[[R2:[0-9]+]])
; Check that identical instructions are at the start of a target block.
; CHECK: [[BB0]]:
; CHECK: sll $1, $[[R0]], 4
; CHECK: lw $[[R1]], %got(assignSE2partition)($[[R2]])
%struct.img_par = type { i32, i32, i32, i32, i32*, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, [16 x [16 x i16]], [6 x [32 x i32]], [16 x [16 x i32]], [4 x [12 x [4 x [4 x i32]]]], [16 x i32], i8**, i32*, i32***, i32**, i32, i32, i32, i32, %struct.Slice*, %struct.macroblock*, i32, i32, i32, i32, i32, i32, %struct.DecRefPicMarking_s*, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, [3 x i32], i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32***, i32***, i32****, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, [3 x [2 x i32]], [3 x [2 x i32]], i32, i32, i32, i32, %struct.timeb, %struct.timeb, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 }
%struct.Slice = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, %struct.datapartition*, %struct.MotionInfoContexts*, %struct.TextureInfoContexts*, i32, i32*, i32*, i32*, i32, i32*, i32*, i32*, i32 (%struct.img_par*, %struct.inp_par*)*, i32, i32, i32, i32 }
%struct.datapartition = type { %struct.Bitstream*, %struct.DecodingEnvironment, i32 (%struct.syntaxelement*, %struct.img_par*, %struct.datapartition*)* }
%struct.Bitstream = type { i32, i32, i32, i32, i8*, i32 }
%struct.DecodingEnvironment = type { i32, i32, i32, i32, i32, i8*, i32* }
%struct.syntaxelement = type { i32, i32, i32, i32, i32, i32, i32, i32, void (i32, i32, i32*, i32*)*, void (%struct.syntaxelement*, %struct.img_par*, %struct.DecodingEnvironment*)* }
%struct.MotionInfoContexts = type { [4 x [11 x %struct.BiContextType]], [2 x [9 x %struct.BiContextType]], [2 x [10 x %struct.BiContextType]], [2 x [6 x %struct.BiContextType]], [4 x %struct.BiContextType], [4 x %struct.BiContextType], [3 x %struct.BiContextType] }
%struct.BiContextType = type { i16, i8 }
%struct.TextureInfoContexts = type { [2 x %struct.BiContextType], [4 x %struct.BiContextType], [3 x [4 x %struct.BiContextType]], [10 x [4 x %struct.BiContextType]], [10 x [15 x %struct.BiContextType]], [10 x [15 x %struct.BiContextType]], [10 x [5 x %struct.BiContextType]], [10 x [5 x %struct.BiContextType]], [10 x [15 x %struct.BiContextType]], [10 x [15 x %struct.BiContextType]] }
%struct.inp_par = type { [1000 x i8], [1000 x i8], [1000 x i8], i32, i32, i32, i32, i32, i32, i32, i32 }
%struct.macroblock = type { i32, [2 x i32], i32, i32, %struct.macroblock*, %struct.macroblock*, i32, [2 x [4 x [4 x [2 x i32]]]], i32, i64, i64, i32, i32, [4 x i8], [4 x i8], i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 }
%struct.DecRefPicMarking_s = type { i32, i32, i32, i32, i32, %struct.DecRefPicMarking_s* }
%struct.timeb = type { i32, i16, i16, i16 }
@assignSE2partition = external global [0 x [20 x i32]]
@FIELD_SCAN8x8 = external constant [64 x [2 x i8]]
define void @readLumaCoeff8x8_CABAC(%struct.img_par* %img, i32 %b8) {
%1 = load i32, i32* undef, align 4
br i1 false, label %2, label %3
; <label>:2 ; preds = %0
br label %3
; <label>:3 ; preds = %2, %0
br i1 undef, label %switch.lookup, label %4
switch.lookup: ; preds = %3
br label %4
; <label>:4 ; preds = %switch.lookup, %3
br i1 undef, label %5, label %6
; <label>:5 ; preds = %4
br label %6
; <label>:6 ; preds = %5, %4
%7 = phi [2 x i8]* [ getelementptr inbounds ([64 x [2 x i8]], [64 x [2 x i8]]* @FIELD_SCAN8x8, i32 0, i32 0), %4 ], [ null, %5 ]
br i1 undef, label %switch.lookup6, label %8
switch.lookup6: ; preds = %6
br label %8
; <label>:8 ; preds = %switch.lookup6, %6
br i1 undef, label %.loopexit, label %9
; <label>:9 ; preds = %8
%10 = and i32 %b8, 1
%11 = shl nuw nsw i32 %10, 3
%12 = getelementptr inbounds %struct.Slice, %struct.Slice* null, i32 0, i32 9
br i1 undef, label %.preheader, label %.preheader11
.preheader11: ; preds = %21, %9
%k.014 = phi i32 [ %27, %21 ], [ 0, %9 ]
%coef_ctr.013 = phi i32 [ %23, %21 ], [ -1, %9 ]
br i1 false, label %13, label %14
; <label>:13 ; preds = %.preheader11
br label %15
; <label>:14 ; preds = %.preheader11
br label %15
; <label>:15 ; preds = %14, %13
%16 = getelementptr inbounds [0 x [20 x i32]], [0 x [20 x i32]]* @assignSE2partition, i32 0, i32 %1, i32 undef
%17 = load i32, i32* %16, align 4
%18 = getelementptr inbounds %struct.datapartition, %struct.datapartition* null, i32 %17, i32 2
%19 = load i32 (%struct.syntaxelement*, %struct.img_par*, %struct.datapartition*)*, i32 (%struct.syntaxelement*, %struct.img_par*, %struct.datapartition*)** %18, align 4
%20 = call i32 %19(%struct.syntaxelement* undef, %struct.img_par* %img, %struct.datapartition* undef)
br i1 false, label %.loopexit, label %21
; <label>:21 ; preds = %15
%22 = add i32 %coef_ctr.013, 1
%23 = add i32 %22, 0
%24 = getelementptr inbounds [2 x i8], [2 x i8]* %7, i32 %23, i32 0
%25 = add nsw i32 0, %11
%26 = getelementptr inbounds %struct.img_par, %struct.img_par* %img, i32 0, i32 27, i32 undef, i32 %25
store i32 0, i32* %26, align 4
%27 = add nsw i32 %k.014, 1
%28 = icmp slt i32 %27, 65
br i1 %28, label %.preheader11, label %.loopexit
.preheader: ; preds = %36, %9
%k.110 = phi i32 [ %45, %36 ], [ 0, %9 ]
%coef_ctr.29 = phi i32 [ %39, %36 ], [ -1, %9 ]
br i1 false, label %29, label %30
; <label>:29 ; preds = %.preheader
br label %31
; <label>:30 ; preds = %.preheader
br label %31
; <label>:31 ; preds = %30, %29
%32 = getelementptr inbounds [0 x [20 x i32]], [0 x [20 x i32]]* @assignSE2partition, i32 0, i32 %1, i32 undef
%33 = load i32, i32* %32, align 4
%34 = getelementptr inbounds %struct.datapartition, %struct.datapartition* null, i32 %33
%35 = call i32 undef(%struct.syntaxelement* undef, %struct.img_par* %img, %struct.datapartition* %34)
br i1 false, label %.loopexit, label %36
; <label>:36 ; preds = %31
%37 = load i32, i32* undef, align 4
%38 = add i32 %coef_ctr.29, 1
%39 = add i32 %38, %37
%40 = getelementptr inbounds [2 x i8], [2 x i8]* %7, i32 %39, i32 0
%41 = load i8, i8* %40, align 1
%42 = zext i8 %41 to i32
%43 = add nsw i32 %42, %11
%44 = getelementptr inbounds %struct.img_par, %struct.img_par* %img, i32 0, i32 27, i32 undef, i32 %43
store i32 0, i32* %44, align 4
%45 = add nsw i32 %k.110, 1
%46 = icmp slt i32 %45, 65
br i1 %46, label %.preheader, label %.loopexit
.loopexit: ; preds = %36, %31, %21, %15, %8
ret void
}