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1; Check that we don't crash on corner cases.2; RUN: opt < %s -S -passes=loop-unroll -unroll-max-iteration-count-to-analyze=1000 -unroll-threshold=1 -unroll-max-percent-threshold-boost=200 -o /dev/null3; RUN: opt < %s -S -passes='require<opt-remark-emit>,loop(loop-unroll-full)' -unroll-max-iteration-count-to-analyze=1000 -unroll-threshold=1 -unroll-max-percent-threshold-boost=200 -o /dev/null4target 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 167 8define void @foo1(i1 %arg) {9entry:10 br label %for.body11 12for.body:13 %phi = phi i64 [ 0, %entry ], [ %inc, %for.body ]14 %idx = zext i32 undef to i6415 %add.ptr = getelementptr inbounds i64, ptr null, i64 %idx16 %inc = add nuw nsw i64 %phi, 117 %cmp = icmp ult i64 %inc, 99918 br i1 %cmp, label %for.body, label %for.exit19 20for.exit:21 ret void22}23 24define void @foo2(i1 %arg) {25entry:26 br label %for.body27 28for.body:29 %phi = phi i64 [ 0, %entry ], [ %inc, %for.body ]30 %x = getelementptr i32, <4 x ptr> undef, <4 x i32> <i32 1, i32 1, i32 1, i32 1>31 %inc = add nuw nsw i64 %phi, 132 %cmp = icmp ult i64 %inc, 99933 br i1 %cmp, label %for.body, label %for.exit34 35for.exit:36 ret void37}38 39define void @cmp_undef(i1 %arg) {40entry:41 br label %for.body42 43for.body: ; preds = %for.inc, %entry44 %iv.0 = phi i64 [ 0, %entry ], [ %iv.1, %for.inc ]45 %arrayidx1 = getelementptr inbounds [10 x i32], ptr @known_constant, i64 0, i64 %iv.046 %x1 = load i32, ptr %arrayidx1, align 447 %cmp = icmp eq i32 %x1, undef48 br i1 %cmp, label %if.then, label %for.inc49 50if.then: ; preds = %for.body51 br label %for.inc52 53for.inc: ; preds = %for.body, %if.then54 %iv.1 = add nuw nsw i64 %iv.0, 155 %exitcond = icmp eq i64 %iv.1, 1056 br i1 %exitcond, label %for.end, label %for.body57 58for.end: ; preds = %for.inc59 ret void60}61 62define void @switch(i1 %arg) {63entry:64 br label %for.body65 66for.body:67 %iv.0 = phi i64 [ 0, %entry ], [ %iv.1, %for.inc ]68 %arrayidx1 = getelementptr inbounds [10 x i32], ptr @known_constant, i64 0, i64 %iv.069 %x1 = load i32, ptr %arrayidx1, align 470 switch i32 %x1, label %l1 [71 ]72 73l1:74 %x2 = add i32 %x1, 275 br label %for.inc76 77for.inc:78 %iv.1 = add nuw nsw i64 %iv.0, 179 %exitcond = icmp eq i64 %iv.1, 1080 br i1 %exitcond, label %for.end, label %for.body81 82for.end:83 ret void84}85 86define <4 x i32> @vec_load(i1 %arg) {87entry:88 br label %for.body89 90for.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], ptr @known_constant, i64 0, i64 %phi94 %x = load <4 x i32>, < 4 x i32>* %arrayidx, align 495 %r = add <4 x i32> %x, %vec_phi96 %inc = add nuw nsw i64 %phi, 197 %cmp = icmp ult i64 %inc, 99998 br i1 %cmp, label %for.body, label %for.exit99 100for.exit:101 ret <4 x i32> %r102}103 104define void @ptrtoint_cast(i1 %arg) optsize {105entry:106 br label %for.body107 108for.body:109 br i1 true, label %for.inc, label %if.then110 111if.then:112 %x = ptrtoint ptr null to i64113 br label %for.inc114 115for.inc:116 br i1 false, label %for.body, label %for.cond.cleanup117 118for.cond.cleanup:119 ret void120}121 122define void @ptrtoint_cast2(i1 %arg) {123entry:124 br i1 false, label %for.body.lr.ph, label %exit125 126for.body.lr.ph:127 br label %for.body128 129for.body:130 %iv = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]131 %offset = getelementptr inbounds float, ptr null, i32 3132 %inc = add nuw nsw i32 %iv, 1133 br i1 false, label %for.body, label %exit134 135exit:136 ret void137}138 139@i = external global i32, align 4140 141define void @folded_not_to_constantint(i1 %arg) {142entry:143 br label %for.body144 145for.body:146 %iv = phi i32 [ 0, %entry ], [ %inc, %for.inc ]147 %m = phi ptr [ @i, %entry ], [ %m, %for.inc ]148 br i1 %arg, label %if.else, label %if.then149 150if.then:151 unreachable152 153if.else:154 %cmp = icmp ult ptr %m, null155 br i1 %cmp, label %cond.false, label %for.inc156 157cond.false:158 unreachable159 160for.inc:161 %inc = add nuw nsw i32 %iv, 1162 %cmp2 = icmp ult i32 %inc, 10163 br i1 %cmp2, label %for.body, label %for.end164 165for.end:166 ret void167}168 169define void @index_too_large(i1 %arg) {170entry:171 br label %for.body172 173for.body:174 %iv = phi i64 [ -73631599, %entry ], [ %iv.next, %for.inc ]175 br i1 %arg, label %for.body2, label %for.inc176 177for.body2:178 %idx = getelementptr inbounds [10 x i32], ptr @known_constant, i64 0, i64 %iv179 %x = load i32, ptr %idx, align 1180 br label %for.inc181 182for.inc:183 %iv.next = add nsw i64 %iv, -1184 br i1 %arg, label %for.body, label %for.end185 186for.end:187 ret void188}189 190define void @cmp_type_mismatch(i1 %arg) {191entry:192 br label %for.header193 194for.header:195 br label %for.body196 197for.body:198 %d = phi ptr [ null, %for.header ]199 %cmp = icmp eq ptr %d, null200 br i1 %arg, label %for.end, label %for.header201 202for.end:203 ret void204}205 206define void @load_type_mismatch() {207entry:208 br label %for.body209 210for.body:211 %iv.0 = phi i64 [ 0, %entry ], [ %iv.1, %for.body ]212 %arrayidx1 = getelementptr inbounds [10 x i32], ptr @known_constant, i64 0, i64 %iv.0213 %x1 = load i64, ptr %arrayidx1, align 4214 %x2 = add i64 10, %x1215 %iv.1 = add nuw nsw i64 %iv.0, 1216 %exitcond = icmp eq i64 %iv.1, 10217 br i1 %exitcond, label %for.end, label %for.body218 219for.end:220 ret void221}222