1 ; RUN: opt -S -loop-rotate < %s -verify-loop-info -verify-dom-info | FileCheck %s 2 3 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" 4 target triple = "x86_64-apple-macosx10.8.0" 5 6 ; PR7447 7 define i32 @test1([100 x i32]* nocapture %a) nounwind readonly { 8 entry: 9 br label %for.cond 10 11 for.cond: ; preds = %for.cond1, %entry 12 %sum.0 = phi i32 [ 0, %entry ], [ %sum.1, %for.cond1 ] 13 %i.0 = phi i1 [ true, %entry ], [ false, %for.cond1 ] 14 br i1 %i.0, label %for.cond1, label %return 15 16 for.cond1: ; preds = %for.cond, %land.rhs 17 %sum.1 = phi i32 [ %add, %land.rhs ], [ %sum.0, %for.cond ] 18 %i.1 = phi i32 [ %inc, %land.rhs ], [ 0, %for.cond ] 19 %cmp2 = icmp ult i32 %i.1, 100 20 br i1 %cmp2, label %land.rhs, label %for.cond 21 22 land.rhs: ; preds = %for.cond1 23 %conv = zext i32 %i.1 to i64 24 %arrayidx = getelementptr inbounds [100 x i32], [100 x i32]* %a, i64 0, i64 %conv 25 %0 = load i32, i32* %arrayidx, align 4 26 %add = add i32 %0, %sum.1 27 %cmp4 = icmp ugt i32 %add, 1000 28 %inc = add i32 %i.1, 1 29 br i1 %cmp4, label %return, label %for.cond1 30 31 return: ; preds = %for.cond, %land.rhs 32 %retval.0 = phi i32 [ 1000, %land.rhs ], [ %sum.0, %for.cond ] 33 ret i32 %retval.0 34 35 ; CHECK-LABEL: @test1( 36 ; CHECK: for.cond1.preheader: 37 ; CHECK: %sum.04 = phi i32 [ 0, %entry ], [ %sum.1.lcssa, %for.cond.loopexit ] 38 ; CHECK: br label %for.cond1 39 40 ; CHECK: for.cond1: 41 ; CHECK: %sum.1 = phi i32 [ %add, %land.rhs ], [ %sum.04, %for.cond1.preheader ] 42 ; CHECK: %i.1 = phi i32 [ %inc, %land.rhs ], [ 0, %for.cond1.preheader ] 43 ; CHECK: %cmp2 = icmp ult i32 %i.1, 100 44 ; CHECK: br i1 %cmp2, label %land.rhs, label %for.cond.loopexit 45 } 46 47 define void @test2(i32 %x) nounwind { 48 entry: 49 br label %for.cond 50 51 for.cond: ; preds = %if.end, %entry 52 %i.0 = phi i32 [ 0, %entry ], [ %inc, %if.end ] 53 %cmp = icmp eq i32 %i.0, %x 54 br i1 %cmp, label %return.loopexit, label %for.body 55 56 for.body: ; preds = %for.cond 57 %call = tail call i32 @foo(i32 %i.0) nounwind 58 %tobool = icmp eq i32 %call, 0 59 br i1 %tobool, label %if.end, label %a 60 61 if.end: ; preds = %for.body 62 %call1 = tail call i32 @foo(i32 42) nounwind 63 %inc = add i32 %i.0, 1 64 br label %for.cond 65 66 a: ; preds = %for.body 67 %call2 = tail call i32 @bar(i32 1) nounwind 68 br label %return 69 70 return.loopexit: ; preds = %for.cond 71 br label %return 72 73 return: ; preds = %return.loopexit, %a 74 ret void 75 76 ; CHECK-LABEL: @test2( 77 ; CHECK: if.end: 78 ; CHECK: %inc = add i32 %i.02, 1 79 ; CHECK: %cmp = icmp eq i32 %inc, %x 80 ; CHECK: br i1 %cmp, label %for.cond.return.loopexit_crit_edge, label %for.body 81 } 82 83 declare i32 @foo(i32) 84 85 declare i32 @bar(i32) 86 87 @_ZTIi = external constant i8* 88 89 ; Verify dominators. 90 define void @test3(i32 %x) personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) { 91 entry: 92 %cmp2 = icmp eq i32 0, %x 93 br i1 %cmp2, label %try.cont.loopexit, label %for.body.lr.ph 94 95 for.body.lr.ph: ; preds = %entry 96 br label %for.body 97 98 for.body: ; preds = %for.body.lr.ph, %for.inc 99 %i.03 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.inc ] 100 invoke void @_Z3fooi(i32 %i.03) 101 to label %for.inc unwind label %lpad 102 103 for.inc: ; preds = %for.body 104 %inc = add i32 %i.03, 1 105 %cmp = icmp eq i32 %inc, %x 106 br i1 %cmp, label %for.cond.try.cont.loopexit_crit_edge, label %for.body 107 108 lpad: ; preds = %for.body 109 %0 = landingpad { i8*, i32 } 110 catch i8* bitcast (i8** @_ZTIi to i8*) 111 %1 = extractvalue { i8*, i32 } %0, 0 112 %2 = extractvalue { i8*, i32 } %0, 1 113 %3 = tail call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) nounwind 114 %matches = icmp eq i32 %2, %3 115 br i1 %matches, label %catch, label %eh.resume 116 117 catch: ; preds = %lpad 118 %4 = tail call i8* @__cxa_begin_catch(i8* %1) nounwind 119 br i1 true, label %invoke.cont2.loopexit, label %for.body.i.lr.ph 120 121 for.body.i.lr.ph: ; preds = %catch 122 br label %for.body.i 123 124 for.body.i: ; preds = %for.body.i.lr.ph, %for.inc.i 125 %i.0.i1 = phi i32 [ 0, %for.body.i.lr.ph ], [ %inc.i, %for.inc.i ] 126 invoke void @_Z3fooi(i32 %i.0.i1) 127 to label %for.inc.i unwind label %lpad.i 128 129 for.inc.i: ; preds = %for.body.i 130 %inc.i = add i32 %i.0.i1, 1 131 %cmp.i = icmp eq i32 %inc.i, 0 132 br i1 %cmp.i, label %for.cond.i.invoke.cont2.loopexit_crit_edge, label %for.body.i 133 134 lpad.i: ; preds = %for.body.i 135 %5 = landingpad { i8*, i32 } 136 catch i8* bitcast (i8** @_ZTIi to i8*) 137 %6 = extractvalue { i8*, i32 } %5, 0 138 %7 = extractvalue { i8*, i32 } %5, 1 139 %matches.i = icmp eq i32 %7, %3 140 br i1 %matches.i, label %catch.i, label %lpad1.body 141 142 catch.i: ; preds = %lpad.i 143 %8 = tail call i8* @__cxa_begin_catch(i8* %6) nounwind 144 invoke void @test3(i32 0) 145 to label %invoke.cont2.i unwind label %lpad1.i 146 147 invoke.cont2.i: ; preds = %catch.i 148 tail call void @__cxa_end_catch() nounwind 149 br label %invoke.cont2 150 151 lpad1.i: ; preds = %catch.i 152 %9 = landingpad { i8*, i32 } 153 cleanup 154 %10 = extractvalue { i8*, i32 } %9, 0 155 %11 = extractvalue { i8*, i32 } %9, 1 156 tail call void @__cxa_end_catch() nounwind 157 br label %lpad1.body 158 159 for.cond.i.invoke.cont2.loopexit_crit_edge: ; preds = %for.inc.i 160 br label %invoke.cont2.loopexit 161 162 invoke.cont2.loopexit: ; preds = %for.cond.i.invoke.cont2.loopexit_crit_edge, %catch 163 br label %invoke.cont2 164 165 invoke.cont2: ; preds = %invoke.cont2.loopexit, %invoke.cont2.i 166 tail call void @__cxa_end_catch() nounwind 167 br label %try.cont 168 169 for.cond.try.cont.loopexit_crit_edge: ; preds = %for.inc 170 br label %try.cont.loopexit 171 172 try.cont.loopexit: ; preds = %for.cond.try.cont.loopexit_crit_edge, %entry 173 br label %try.cont 174 175 try.cont: ; preds = %try.cont.loopexit, %invoke.cont2 176 ret void 177 178 lpad1.body: ; preds = %lpad1.i, %lpad.i 179 %exn.slot.0.i = phi i8* [ %10, %lpad1.i ], [ %6, %lpad.i ] 180 %ehselector.slot.0.i = phi i32 [ %11, %lpad1.i ], [ %7, %lpad.i ] 181 tail call void @__cxa_end_catch() nounwind 182 br label %eh.resume 183 184 eh.resume: ; preds = %lpad1.body, %lpad 185 %exn.slot.0 = phi i8* [ %exn.slot.0.i, %lpad1.body ], [ %1, %lpad ] 186 %ehselector.slot.0 = phi i32 [ %ehselector.slot.0.i, %lpad1.body ], [ %2, %lpad ] 187 %lpad.val = insertvalue { i8*, i32 } undef, i8* %exn.slot.0, 0 188 %lpad.val5 = insertvalue { i8*, i32 } %lpad.val, i32 %ehselector.slot.0, 1 189 resume { i8*, i32 } %lpad.val5 190 } 191 192 declare void @_Z3fooi(i32) 193 194 declare i32 @__gxx_personality_v0(...) 195 196 declare i32 @llvm.eh.typeid.for(i8*) nounwind readnone 197 198 declare i8* @__cxa_begin_catch(i8*) 199 200 declare void @__cxa_end_catch() 201 202 define void @test4() nounwind uwtable { 203 entry: 204 br label %"7" 205 206 "3": ; preds = %"7" 207 br i1 undef, label %"31", label %"4" 208 209 "4": ; preds = %"3" 210 %. = select i1 undef, float 0x3F50624DE0000000, float undef 211 %0 = add i32 %1, 1 212 br label %"7" 213 214 "7": ; preds = %"4", %entry 215 %1 = phi i32 [ %0, %"4" ], [ 0, %entry ] 216 %2 = icmp slt i32 %1, 100 217 br i1 %2, label %"3", label %"8" 218 219 "8": ; preds = %"7" 220 br i1 undef, label %"9", label %"31" 221 222 "9": ; preds = %"8" 223 br label %"33" 224 225 "27": ; preds = %"31" 226 unreachable 227 228 "31": ; preds = %"8", %"3" 229 br i1 undef, label %"27", label %"32" 230 231 "32": ; preds = %"31" 232 br label %"33" 233 234 "33": ; preds = %"32", %"9" 235 ret void 236 } 237
