1 ; RUN: llc -march=mipsel -O3 -relocation-model=pic < %s | FileCheck %s
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).
11 ; CHECK-LABEL: readLumaCoeff8x8_CABAC
13 ; The check for first "addiu" instruction is added so that we can match the correct "b" instruction.
15 ; CHECK: b $[[BB0:BB[0-9_]+]]
18 ; Check that at the start of a fallthrough block there is a instruction that writes to $1.
19 ; CHECK: {{%bb.[0-9]+}}:
20 ; CHECK: sll $1, $[[R0:[0-9]+]], 4
21 ; CHECK: lw $[[R1:[0-9]+]], %got(assignSE2partition)($[[R2:[0-9]+]])
23 ; Check that identical instructions are at the start of a target block.
25 ; CHECK: sll $1, $[[R0]], 4
26 ; CHECK: lw $[[R1]], %got(assignSE2partition)($[[R2]])
29 %struct.img_par = type { i32, i32, i32, i32, ptr, 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], ptr, ptr, ptr, ptr, i32, i32, i32, i32, ptr, ptr, i32, i32, i32, i32, i32, i32, ptr, 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, ptr, ptr, ptr, 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 }
30 %struct.Slice = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, ptr, ptr, ptr, i32, ptr, ptr, ptr, i32, ptr, ptr, ptr, ptr, i32, i32, i32, i32 }
31 %struct.datapartition = type { ptr, %struct.DecodingEnvironment, ptr }
32 %struct.Bitstream = type { i32, i32, i32, i32, ptr, i32 }
33 %struct.DecodingEnvironment = type { i32, i32, i32, i32, i32, ptr, ptr }
34 %struct.syntaxelement = type { i32, i32, i32, i32, i32, i32, i32, i32, ptr, ptr }
35 %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] }
36 %struct.BiContextType = type { i16, i8 }
37 %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]] }
38 %struct.inp_par = type { [1000 x i8], [1000 x i8], [1000 x i8], i32, i32, i32, i32, i32, i32, i32, i32 }
39 %struct.macroblock = type { i32, [2 x i32], i32, i32, ptr, ptr, 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 }
40 %struct.DecRefPicMarking_s = type { i32, i32, i32, i32, i32, ptr }
41 %struct.timeb = type { i32, i16, i16, i16 }
43 @assignSE2partition = external global [0 x [20 x i32]]
44 @FIELD_SCAN8x8 = external constant [64 x [2 x i8]]
47 define void @readLumaCoeff8x8_CABAC(ptr %img, i32 %b8) {
49 %1 = load i32, ptr undef, align 4
50 br i1 false, label %2, label %3
52 ; <label>:2 ; preds = %0
55 ; <label>:3 ; preds = %2, %0
56 br i1 undef, label %switch.lookup, label %4
58 switch.lookup: ; preds = %3
61 ; <label>:4 ; preds = %switch.lookup, %3
62 br i1 undef, label %5, label %6
64 ; <label>:5 ; preds = %4
67 ; <label>:6 ; preds = %5, %4
68 %7 = phi ptr [ @FIELD_SCAN8x8, %4 ], [ null, %5 ]
69 br i1 undef, label %switch.lookup6, label %8
71 switch.lookup6: ; preds = %6
74 ; <label>:8 ; preds = %switch.lookup6, %6
75 br i1 undef, label %.loopexit, label %9
77 ; <label>:9 ; preds = %8
79 %11 = shl nuw nsw i32 %10, 3
80 %12 = getelementptr inbounds %struct.Slice, ptr null, i32 0, i32 9
81 br i1 undef, label %.preheader, label %.preheader11
83 .preheader11: ; preds = %21, %9
84 %k.014 = phi i32 [ %27, %21 ], [ 0, %9 ]
85 %coef_ctr.013 = phi i32 [ %23, %21 ], [ -1, %9 ]
86 br i1 false, label %13, label %14
88 ; <label>:13 ; preds = %.preheader11
91 ; <label>:14 ; preds = %.preheader11
94 ; <label>:15 ; preds = %14, %13
95 %16 = getelementptr inbounds [0 x [20 x i32]], ptr @assignSE2partition, i32 0, i32 %1, i32 undef
96 %17 = load i32, ptr %16, align 4
97 %18 = getelementptr inbounds %struct.datapartition, ptr null, i32 %17, i32 2
98 %19 = load ptr, ptr %18, align 4
99 %20 = call i32 %19(ptr undef, ptr %img, ptr undef)
100 br i1 false, label %.loopexit, label %21
102 ; <label>:21 ; preds = %15
103 %22 = add i32 %coef_ctr.013, 1
105 %24 = getelementptr inbounds [2 x i8], ptr %7, i32 %23, i32 0
106 %25 = add nsw i32 0, %11
107 %26 = getelementptr inbounds %struct.img_par, ptr %img, i32 0, i32 27, i32 undef, i32 %25
108 store i32 0, ptr %26, align 4
109 %27 = add nsw i32 %k.014, 1
110 %28 = icmp slt i32 %27, 65
111 br i1 %28, label %.preheader11, label %.loopexit
113 .preheader: ; preds = %36, %9
114 %k.110 = phi i32 [ %45, %36 ], [ 0, %9 ]
115 %coef_ctr.29 = phi i32 [ %39, %36 ], [ -1, %9 ]
116 br i1 false, label %29, label %30
118 ; <label>:29 ; preds = %.preheader
121 ; <label>:30 ; preds = %.preheader
124 ; <label>:31 ; preds = %30, %29
125 %32 = getelementptr inbounds [0 x [20 x i32]], ptr @assignSE2partition, i32 0, i32 %1, i32 undef
126 %33 = load i32, ptr %32, align 4
127 %34 = getelementptr inbounds %struct.datapartition, ptr null, i32 %33
128 %35 = call i32 undef(ptr undef, ptr %img, ptr %34)
129 br i1 false, label %.loopexit, label %36
131 ; <label>:36 ; preds = %31
132 %37 = load i32, ptr undef, align 4
133 %38 = add i32 %coef_ctr.29, 1
134 %39 = add i32 %38, %37
135 %40 = getelementptr inbounds [2 x i8], ptr %7, i32 %39, i32 0
136 %41 = load i8, ptr %40, align 1
137 %42 = zext i8 %41 to i32
138 %43 = add nsw i32 %42, %11
139 %44 = getelementptr inbounds %struct.img_par, ptr %img, i32 0, i32 27, i32 undef, i32 %43
140 store i32 0, ptr %44, align 4
141 %45 = add nsw i32 %k.110, 1
142 %46 = icmp slt i32 %45, 65
143 br i1 %46, label %.preheader, label %.loopexit
145 .loopexit: ; preds = %36, %31, %21, %15, %8