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comparison test/CodeGen/Mips/prevent-hoisting.ll @ 77:54457678186b LLVM3.6

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LLVM 3.6
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Mon, 08 Sep 2014 22:06:00 +0900
parents
children 60c9769439b8
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34:e874dbf0ad9d 77:54457678186b
1 ; RUN: llc -march=mipsel -O3 < %s | FileCheck %s
2
3
4 ; MIPS direct branches implicitly define register $at. This test makes sure that
5 ; code hoisting optimization (which moves identical instructions at the start of
6 ; two basic blocks to the common predecessor block) takes this into account and
7 ; doesn't move definition of $at to the predecessor block (which would make $at
8 ; live-in at the start of successor block).
9
10
11 ; CHECK-LABEL: readLumaCoeff8x8_CABAC
12
13 ; The check for "addiu" instruction is added so that we can match the correct "b" instruction.
14 ; CHECK: addiu ${{[0-9]+}}, $zero, -1
15 ; CHECK: b $[[BB0:BB[0-9_]+]]
16
17 ; Check that sll instruction that writes to $1 starts basic block.
18 ; CHECK: {{BB[0-9_#]+}}:
19 ; CHECK-NEXT: sll $1, $[[R0:[0-9]+]], 4
20
21 ; Check that identical sll instruction starts another basic block.
22 ; CHECK: [[BB0]]:
23 ; CHECK-NEXT: sll $1, $[[R0]], 4
24
25
26 %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 }
27 %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 }
28 %struct.datapartition = type { %struct.Bitstream*, %struct.DecodingEnvironment, i32 (%struct.syntaxelement*, %struct.img_par*, %struct.datapartition*)* }
29 %struct.Bitstream = type { i32, i32, i32, i32, i8*, i32 }
30 %struct.DecodingEnvironment = type { i32, i32, i32, i32, i32, i8*, i32* }
31 %struct.syntaxelement = type { i32, i32, i32, i32, i32, i32, i32, i32, void (i32, i32, i32*, i32*)*, void (%struct.syntaxelement*, %struct.img_par*, %struct.DecodingEnvironment*)* }
32 %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] }
33 %struct.BiContextType = type { i16, i8 }
34 %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]] }
35 %struct.inp_par = type { [1000 x i8], [1000 x i8], [1000 x i8], i32, i32, i32, i32, i32, i32, i32, i32 }
36 %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 }
37 %struct.DecRefPicMarking_s = type { i32, i32, i32, i32, i32, %struct.DecRefPicMarking_s* }
38 %struct.timeb = type { i32, i16, i16, i16 }
39
40 @assignSE2partition = external global [0 x [20 x i32]]
41 @FIELD_SCAN8x8 = external constant [64 x [2 x i8]]
42
43
44 define void @readLumaCoeff8x8_CABAC(%struct.img_par* %img, i32 %b8) {
45
46 %1 = load i32* undef, align 4
47 br i1 false, label %2, label %3
48
49 ; <label>:2 ; preds = %0
50 br label %3
51
52 ; <label>:3 ; preds = %2, %0
53 br i1 undef, label %switch.lookup, label %4
54
55 switch.lookup: ; preds = %3
56 br label %4
57
58 ; <label>:4 ; preds = %switch.lookup, %3
59 br i1 undef, label %5, label %6
60
61 ; <label>:5 ; preds = %4
62 br label %6
63
64 ; <label>:6 ; preds = %5, %4
65 %7 = phi [2 x i8]* [ getelementptr inbounds ([64 x [2 x i8]]* @FIELD_SCAN8x8, i32 0, i32 0), %4 ], [ null, %5 ]
66 br i1 undef, label %switch.lookup6, label %8
67
68 switch.lookup6: ; preds = %6
69 br label %8
70
71 ; <label>:8 ; preds = %switch.lookup6, %6
72 br i1 undef, label %.loopexit, label %9
73
74 ; <label>:9 ; preds = %8
75 %10 = and i32 %b8, 1
76 %11 = shl nuw nsw i32 %10, 3
77 %12 = getelementptr inbounds %struct.Slice* null, i32 0, i32 9
78 br i1 undef, label %.preheader, label %.preheader11
79
80 .preheader11: ; preds = %21, %9
81 %k.014 = phi i32 [ %27, %21 ], [ 0, %9 ]
82 %coef_ctr.013 = phi i32 [ %23, %21 ], [ -1, %9 ]
83 br i1 false, label %13, label %14
84
85 ; <label>:13 ; preds = %.preheader11
86 br label %15
87
88 ; <label>:14 ; preds = %.preheader11
89 br label %15
90
91 ; <label>:15 ; preds = %14, %13
92 %16 = getelementptr inbounds [0 x [20 x i32]]* @assignSE2partition, i32 0, i32 %1, i32 undef
93 %17 = load i32* %16, align 4
94 %18 = getelementptr inbounds %struct.datapartition* null, i32 %17, i32 2
95 %19 = load i32 (%struct.syntaxelement*, %struct.img_par*, %struct.datapartition*)** %18, align 4
96 %20 = call i32 %19(%struct.syntaxelement* undef, %struct.img_par* %img, %struct.datapartition* undef)
97 br i1 false, label %.loopexit, label %21
98
99 ; <label>:21 ; preds = %15
100 %22 = add i32 %coef_ctr.013, 1
101 %23 = add i32 %22, 0
102 %24 = getelementptr inbounds [2 x i8]* %7, i32 %23, i32 0
103 %25 = add nsw i32 0, %11
104 %26 = getelementptr inbounds %struct.img_par* %img, i32 0, i32 27, i32 undef, i32 %25
105 store i32 0, i32* %26, align 4
106 %27 = add nsw i32 %k.014, 1
107 %28 = icmp slt i32 %27, 65
108 br i1 %28, label %.preheader11, label %.loopexit
109
110 .preheader: ; preds = %36, %9
111 %k.110 = phi i32 [ %45, %36 ], [ 0, %9 ]
112 %coef_ctr.29 = phi i32 [ %39, %36 ], [ -1, %9 ]
113 br i1 false, label %29, label %30
114
115 ; <label>:29 ; preds = %.preheader
116 br label %31
117
118 ; <label>:30 ; preds = %.preheader
119 br label %31
120
121 ; <label>:31 ; preds = %30, %29
122 %32 = getelementptr inbounds [0 x [20 x i32]]* @assignSE2partition, i32 0, i32 %1, i32 undef
123 %33 = load i32* %32, align 4
124 %34 = getelementptr inbounds %struct.datapartition* null, i32 %33
125 %35 = call i32 undef(%struct.syntaxelement* undef, %struct.img_par* %img, %struct.datapartition* %34)
126 br i1 false, label %.loopexit, label %36
127
128 ; <label>:36 ; preds = %31
129 %37 = load i32* undef, align 4
130 %38 = add i32 %coef_ctr.29, 1
131 %39 = add i32 %38, %37
132 %40 = getelementptr inbounds [2 x i8]* %7, i32 %39, i32 0
133 %41 = load i8* %40, align 1
134 %42 = zext i8 %41 to i32
135 %43 = add nsw i32 %42, %11
136 %44 = getelementptr inbounds %struct.img_par* %img, i32 0, i32 27, i32 undef, i32 %43
137 store i32 0, i32* %44, align 4
138 %45 = add nsw i32 %k.110, 1
139 %46 = icmp slt i32 %45, 65
140 br i1 %46, label %.preheader, label %.loopexit
141
142 .loopexit: ; preds = %36, %31, %21, %15, %8
143 ret void
144 }