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 first "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 ; CHECK-NEXT: addiu ${{[0-9]+}}, $zero, 0 17 18 ; Check that at the start of a fallthrough block there is a instruction that writes to $1. 19 ; CHECK-NEXT: {{BB[0-9_#]+}}: 20 ; CHECK-NEXT: lw $[[R1:[0-9]+]], %got(assignSE2partition)($[[R2:[0-9]+]]) 21 ; CHECK-NEXT: sll $1, $[[R0:[0-9]+]], 4 22 23 ; Check that identical instructions are at the start of a target block. 24 ; CHECK: [[BB0]]: 25 ; CHECK-NEXT: lw $[[R1]], %got(assignSE2partition)($[[R2]]) 26 ; CHECK-NEXT: sll $1, $[[R0]], 4 27 28 29 %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 } 30 %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 } 31 %struct.datapartition = type { %struct.Bitstream*, %struct.DecodingEnvironment, i32 (%struct.syntaxelement*, %struct.img_par*, %struct.datapartition*)* } 32 %struct.Bitstream = type { i32, i32, i32, i32, i8*, i32 } 33 %struct.DecodingEnvironment = type { i32, i32, i32, i32, i32, i8*, i32* } 34 %struct.syntaxelement = type { i32, i32, i32, i32, i32, i32, i32, i32, void (i32, i32, i32*, i32*)*, void (%struct.syntaxelement*, %struct.img_par*, %struct.DecodingEnvironment*)* } 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, %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 } 40 %struct.DecRefPicMarking_s = type { i32, i32, i32, i32, i32, %struct.DecRefPicMarking_s* } 41 %struct.timeb = type { i32, i16, i16, i16 } 42 43 @assignSE2partition = external global [0 x [20 x i32]] 44 @FIELD_SCAN8x8 = external constant [64 x [2 x i8]] 45 46 47 define void @readLumaCoeff8x8_CABAC(%struct.img_par* %img, i32 %b8) { 48 49 %1 = load i32, i32* undef, align 4 50 br i1 false, label %2, label %3 51 52 ; <label>:2 ; preds = %0 53 br label %3 54 55 ; <label>:3 ; preds = %2, %0 56 br i1 undef, label %switch.lookup, label %4 57 58 switch.lookup: ; preds = %3 59 br label %4 60 61 ; <label>:4 ; preds = %switch.lookup, %3 62 br i1 undef, label %5, label %6 63 64 ; <label>:5 ; preds = %4 65 br label %6 66 67 ; <label>:6 ; preds = %5, %4 68 %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 ] 69 br i1 undef, label %switch.lookup6, label %8 70 71 switch.lookup6: ; preds = %6 72 br label %8 73 74 ; <label>:8 ; preds = %switch.lookup6, %6 75 br i1 undef, label %.loopexit, label %9 76 77 ; <label>:9 ; preds = %8 78 %10 = and i32 %b8, 1 79 %11 = shl nuw nsw i32 %10, 3 80 %12 = getelementptr inbounds %struct.Slice, %struct.Slice* null, i32 0, i32 9 81 br i1 undef, label %.preheader, label %.preheader11 82 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 87 88 ; <label>:13 ; preds = %.preheader11 89 br label %15 90 91 ; <label>:14 ; preds = %.preheader11 92 br label %15 93 94 ; <label>:15 ; preds = %14, %13 95 %16 = getelementptr inbounds [0 x [20 x i32]], [0 x [20 x i32]]* @assignSE2partition, i32 0, i32 %1, i32 undef 96 %17 = load i32, i32* %16, align 4 97 %18 = getelementptr inbounds %struct.datapartition, %struct.datapartition* null, i32 %17, i32 2 98 %19 = load i32 (%struct.syntaxelement*, %struct.img_par*, %struct.datapartition*)*, i32 (%struct.syntaxelement*, %struct.img_par*, %struct.datapartition*)** %18, align 4 99 %20 = call i32 %19(%struct.syntaxelement* undef, %struct.img_par* %img, %struct.datapartition* undef) 100 br i1 false, label %.loopexit, label %21 101 102 ; <label>:21 ; preds = %15 103 %22 = add i32 %coef_ctr.013, 1 104 %23 = add i32 %22, 0 105 %24 = getelementptr inbounds [2 x i8], [2 x i8]* %7, i32 %23, i32 0 106 %25 = add nsw i32 0, %11 107 %26 = getelementptr inbounds %struct.img_par, %struct.img_par* %img, i32 0, i32 27, i32 undef, i32 %25 108 store i32 0, i32* %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 112 113 .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 %30 117 118 ; <label>:29 ; preds = %.preheader 119 br label %31 120 121 ; <label>:30 ; preds = %.preheader 122 br label %31 123 124 ; <label>:31 ; preds = %30, %29 125 %32 = getelementptr inbounds [0 x [20 x i32]], [0 x [20 x i32]]* @assignSE2partition, i32 0, i32 %1, i32 undef 126 %33 = load i32, i32* %32, align 4 127 %34 = getelementptr inbounds %struct.datapartition, %struct.datapartition* null, i32 %33 128 %35 = call i32 undef(%struct.syntaxelement* undef, %struct.img_par* %img, %struct.datapartition* %34) 129 br i1 false, label %.loopexit, label %36 130 131 ; <label>:36 ; preds = %31 132 %37 = load i32, i32* undef, align 4 133 %38 = add i32 %coef_ctr.29, 1 134 %39 = add i32 %38, %37 135 %40 = getelementptr inbounds [2 x i8], [2 x i8]* %7, i32 %39, i32 0 136 %41 = load i8, i8* %40, align 1 137 %42 = zext i8 %41 to i32 138 %43 = add nsw i32 %42, %11 139 %44 = getelementptr inbounds %struct.img_par, %struct.img_par* %img, i32 0, i32 27, i32 undef, i32 %43 140 store i32 0, i32* %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 144 145 .loopexit: ; preds = %36, %31, %21, %15, %8 146 ret void 147 } 148
