1 ; Check that we don't crash on corner cases. 2 ; RUN: opt < %s -S -loop-unroll -unroll-max-iteration-count-to-analyze=1000 -unroll-threshold=1 -unroll-max-percent-threshold-boost=200 -o /dev/null 3 ; RUN: opt < %s -S -passes='require<opt-remark-emit>,loop(unroll-full)' -unroll-max-iteration-count-to-analyze=1000 -unroll-threshold=1 -unroll-max-percent-threshold-boost=200 -o /dev/null 4 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 5 6 @known_constant = internal unnamed_addr constant [10 x i32] [i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1], align 16 7 8 define void @foo1() { 9 entry: 10 br label %for.body 11 12 for.body: 13 %phi = phi i64 [ 0, %entry ], [ %inc, %for.body ] 14 %idx = zext i32 undef to i64 15 %add.ptr = getelementptr inbounds i64, i64* null, i64 %idx 16 %inc = add nuw nsw i64 %phi, 1 17 %cmp = icmp ult i64 %inc, 999 18 br i1 %cmp, label %for.body, label %for.exit 19 20 for.exit: 21 ret void 22 } 23 24 define void @foo2() { 25 entry: 26 br label %for.body 27 28 for.body: 29 %phi = phi i64 [ 0, %entry ], [ %inc, %for.body ] 30 %x = getelementptr i32, <4 x i32*> undef, <4 x i32> <i32 1, i32 1, i32 1, i32 1> 31 %inc = add nuw nsw i64 %phi, 1 32 %cmp = icmp ult i64 %inc, 999 33 br i1 %cmp, label %for.body, label %for.exit 34 35 for.exit: 36 ret void 37 } 38 39 define void @cmp_undef() { 40 entry: 41 br label %for.body 42 43 for.body: ; preds = %for.inc, %entry 44 %iv.0 = phi i64 [ 0, %entry ], [ %iv.1, %for.inc ] 45 %arrayidx1 = getelementptr inbounds [10 x i32], [10 x i32]* @known_constant, i64 0, i64 %iv.0 46 %x1 = load i32, i32* %arrayidx1, align 4 47 %cmp = icmp eq i32 %x1, undef 48 br i1 %cmp, label %if.then, label %for.inc 49 50 if.then: ; preds = %for.body 51 br label %for.inc 52 53 for.inc: ; preds = %for.body, %if.then 54 %iv.1 = add nuw nsw i64 %iv.0, 1 55 %exitcond = icmp eq i64 %iv.1, 10 56 br i1 %exitcond, label %for.end, label %for.body 57 58 for.end: ; preds = %for.inc 59 ret void 60 } 61 62 define void @switch() { 63 entry: 64 br label %for.body 65 66 for.body: 67 %iv.0 = phi i64 [ 0, %entry ], [ %iv.1, %for.inc ] 68 %arrayidx1 = getelementptr inbounds [10 x i32], [10 x i32]* @known_constant, i64 0, i64 %iv.0 69 %x1 = load i32, i32* %arrayidx1, align 4 70 switch i32 %x1, label %l1 [ 71 ] 72 73 l1: 74 %x2 = add i32 %x1, 2 75 br label %for.inc 76 77 for.inc: 78 %iv.1 = add nuw nsw i64 %iv.0, 1 79 %exitcond = icmp eq i64 %iv.1, 10 80 br i1 %exitcond, label %for.end, label %for.body 81 82 for.end: 83 ret void 84 } 85 86 define <4 x i32> @vec_load() { 87 entry: 88 br label %for.body 89 90 for.body: 91 %phi = phi i64 [ 0, %entry ], [ %inc, %for.body ] 92 %vec_phi = phi <4 x i32> [ <i32 0, i32 0, i32 0, i32 0>, %entry ], [ %r, %for.body ] 93 %arrayidx = getelementptr inbounds [10 x i32], [10 x i32]* @known_constant, i64 0, i64 %phi 94 %bc = bitcast i32* %arrayidx to <4 x i32>* 95 %x = load <4 x i32>, < 4 x i32>* %bc, align 4 96 %r = add <4 x i32> %x, %vec_phi 97 %inc = add nuw nsw i64 %phi, 1 98 %cmp = icmp ult i64 %inc, 999 99 br i1 %cmp, label %for.body, label %for.exit 100 101 for.exit: 102 ret <4 x i32> %r 103 } 104 105 define void @ptrtoint_cast() optsize { 106 entry: 107 br label %for.body 108 109 for.body: 110 br i1 true, label %for.inc, label %if.then 111 112 if.then: 113 %arraydecay = getelementptr inbounds [1 x i32], [1 x i32]* null, i64 0, i64 0 114 %x = ptrtoint i32* %arraydecay to i64 115 br label %for.inc 116 117 for.inc: 118 br i1 false, label %for.body, label %for.cond.cleanup 119 120 for.cond.cleanup: 121 ret void 122 } 123 124 define void @ptrtoint_cast2() { 125 entry: 126 br i1 false, label %for.body.lr.ph, label %exit 127 128 for.body.lr.ph: 129 br label %for.body 130 131 for.body: 132 %iv = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ] 133 %offset = getelementptr inbounds float, float* null, i32 3 134 %bc = bitcast float* %offset to i64* 135 %inc = add nuw nsw i32 %iv, 1 136 br i1 false, label %for.body, label %exit 137 138 exit: 139 ret void 140 } 141 142 @i = external global i32, align 4 143 144 define void @folded_not_to_constantint() { 145 entry: 146 br label %for.body 147 148 for.body: 149 %iv = phi i32 [ 0, %entry ], [ %inc, %for.inc ] 150 %m = phi i32* [ @i, %entry ], [ %m, %for.inc ] 151 br i1 undef, label %if.else, label %if.then 152 153 if.then: 154 unreachable 155 156 if.else: 157 %cmp = icmp ult i32* %m, null 158 br i1 %cmp, label %cond.false, label %for.inc 159 160 cond.false: 161 unreachable 162 163 for.inc: 164 %inc = add nuw nsw i32 %iv, 1 165 %cmp2 = icmp ult i32 %inc, 10 166 br i1 %cmp2, label %for.body, label %for.end 167 168 for.end: 169 ret void 170 } 171 172 define void @index_too_large() { 173 entry: 174 br label %for.body 175 176 for.body: 177 %iv = phi i64 [ -73631599, %entry ], [ %iv.next, %for.inc ] 178 br i1 undef, label %for.body2, label %for.inc 179 180 for.body2: 181 %idx = getelementptr inbounds [10 x i32], [10 x i32]* @known_constant, i64 0, i64 %iv 182 %x = load i32, i32* %idx, align 1 183 br label %for.inc 184 185 for.inc: 186 %iv.next = add nsw i64 %iv, -1 187 br i1 undef, label %for.body, label %for.end 188 189 for.end: 190 ret void 191 } 192 193 define void @cmp_type_mismatch() { 194 entry: 195 br label %for.header 196 197 for.header: 198 br label %for.body 199 200 for.body: 201 %d = phi i32* [ null, %for.header ] 202 %cmp = icmp eq i32* %d, null 203 br i1 undef, label %for.end, label %for.header 204 205 for.end: 206 ret void 207 } 208 209 define void @load_type_mismatch() { 210 entry: 211 br label %for.body 212 213 for.body: 214 %iv.0 = phi i64 [ 0, %entry ], [ %iv.1, %for.body ] 215 %arrayidx1 = getelementptr inbounds [10 x i32], [10 x i32]* @known_constant, i64 0, i64 %iv.0 216 %bc = bitcast i32* %arrayidx1 to i64* 217 %x1 = load i64, i64* %bc, align 4 218 %x2 = add i64 10, %x1 219 %iv.1 = add nuw nsw i64 %iv.0, 1 220 %exitcond = icmp eq i64 %iv.1, 10 221 br i1 %exitcond, label %for.end, label %for.body 222 223 for.end: 224 ret void 225 } 226
