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1; RUN: opt -S -passes='print<scalar-evolution>,loop-deletion,print<scalar-evolution>' -verify-scev < %s 2>&1 | FileCheck %s --check-prefix=SCEV-EXPRS2; RUN: opt -S -passes=loop-deletion < %s | FileCheck %s --check-prefix=IR-AFTER-TRANSFORM3 4; Checking for a crash. Loop-deletion would change the loop5; disposition of an instruction, but not update SCEV.6 7target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"8target triple = "x86_64-apple-macosx10.11.0"9 10define void @pr27570(i1 %c1) {11; IR-AFTER-TRANSFORM-LABEL: @pr27570(12entry:13 br label %for.cond14 15for.cond: ; preds = %for.cond14, %entry16 %f.0 = phi i32 [ 20, %entry ], [ 0, %for.cond14 ]17 br label %for.body18 19for.body: ; preds = %for.inc11, %for.cond20; IR-AFTER-TRANSFORM: for.body:21; IR-AFTER-TRANSFORM: %cmp = icmp eq i32 %val, -122; IR-AFTER-TRANSFORM: %conv7 = zext i1 %cmp to i3223; IR-AFTER-TRANSFORM: for.body6:24 25; SCEV-EXPRS: %conv7 = zext i1 %cmp to i3226; SCEV-EXPRS: %conv7 = zext i1 %cmp to i3227; SCEV-EXPRS-NEXT: --> {{.*}} LoopDispositions: { %for.body: Variant, %for.cond: Variant, %for.body6: Invariant }28 %val = phi i32 [ -20, %for.cond ], [ %inc12, %for.inc11 ]29 %g.040 = phi i32 [ -20, %for.cond ], [ %and.lcssa, %for.inc11 ]30 br label %for.body631 32for.body6: ; preds = %for.body6, %for.body33 %h.039 = phi i32 [ 1, %for.body ], [ %inc, %for.body6 ]34 %g.138 = phi i32 [ %g.040, %for.body ], [ %and, %for.body6 ]35 %cmp = icmp eq i32 %val, -136 %conv7 = zext i1 %cmp to i3237 %add.i = add nsw i32 %conv7, %h.03938 %sext = shl i32 %add.i, 2439 %conv8 = ashr exact i32 %sext, 2440 %cmp9 = icmp eq i32 %conv8, %f.041 %conv10 = zext i1 %cmp9 to i3242 %and = and i32 %conv10, %g.13843 %inc = add i32 %h.039, 144 %exit = icmp eq i32 %inc, 2000045 br i1 %exit, label %for.inc11, label %for.body646 47for.inc11: ; preds = %for.body648 %and.lcssa = phi i32 [ %and, %for.body6 ]49 call void @sideeffect(i32 %and.lcssa)50 %inc12 = add nsw i32 %val, 151 %tobool = icmp eq i32 %inc12, 052 br i1 %tobool, label %for.cond14, label %for.body53 54for.cond14: ; preds = %for.cond14, %for.inc1155 br i1 %c1, label %for.cond, label %for.cond1456}57 58declare void @sideeffect(i32)59 60; LoopDeletion removes the loop %for.body7.1. Make sure %inc.lcssa.1 in the loop61; exit block is correctly invalidated.62 63define void @test2(ptr %bx, i64 %by) local_unnamed_addr align 2 {64; IR-AFTER-TRANSFORM-LABEL: @test2(65; IR-AFTER-TRANSFORM-NOT: for.body7.1:66 67; SCEV-EXPRS-LABEL: test268; SCEV-EXPRS: %inc.lcssa.1 = phi i64 [ poison, %for.body7.preheader.1 ]69; SCEV-EXPRS-NEXT: --> poison70entry:71 %cmp = icmp sgt i64 %by, 072 br label %for.cond.preheader73 74for.cond.preheader: ; preds = %entry75 br i1 %cmp, label %for.cond5.preheader.lr.ph, label %for.end1476 77for.cond5.preheader.lr.ph: ; preds = %for.cond.preheader78 br label %for.cond5.preheader79 80for.cond.loopexit.loopexit: ; preds = %for.body1081 %inc11.lcssa = phi i64 [ %inc11, %for.body10 ]82 br label %for.cond.loopexit83 84for.cond.loopexit: ; preds = %for.cond8.preheader, %for.cond.loopexit.loopexit85 %ca.3.lcssa = phi i64 [ %ca.2.lcssa, %for.cond8.preheader ], [ %inc11.lcssa, %for.cond.loopexit.loopexit ]86 br i1 %cmp, label %for.cond5.preheader, label %for.end14.loopexit87 88for.cond5.preheader: ; preds = %for.cond.loopexit, %for.cond5.preheader.lr.ph89 %ca.19 = phi i64 [ 0, %for.cond5.preheader.lr.ph ], [ %ca.3.lcssa, %for.cond.loopexit ]90 br i1 false, label %for.cond8.preheader, label %for.body7.preheader91 92for.body7.preheader: ; preds = %for.cond5.preheader93 br label %for.body794 95for.cond8.preheader.loopexit: ; preds = %for.body796 %inc.lcssa = phi i64 [ %inc, %for.body7 ]97 br label %for.cond8.preheader98 99for.cond8.preheader: ; preds = %for.cond8.preheader.loopexit, %for.cond5.preheader100 %ca.2.lcssa = phi i64 [ %ca.19, %for.cond5.preheader ], [ %inc.lcssa, %for.cond8.preheader.loopexit ]101 br i1 true, label %for.body10.preheader, label %for.cond.loopexit102 103for.body10.preheader: ; preds = %for.cond8.preheader104 br label %for.body10105 106for.body7: ; preds = %for.body7, %for.body7.preheader107 %ca.26 = phi i64 [ %inc, %for.body7 ], [ %ca.19, %for.body7.preheader ]108 %inc = add nsw i64 %ca.26, 1109 %arrayidx = getelementptr inbounds double, ptr %bx, i64 %ca.26110 store double 0.000000e+00, ptr %arrayidx, align 8111 br i1 false, label %for.cond8.preheader.loopexit, label %for.body7112 113for.body10: ; preds = %for.body10, %for.body10.preheader114 %ca.37 = phi i64 [ %inc11, %for.body10 ], [ %ca.2.lcssa, %for.body10.preheader ]115 %inc11 = add nsw i64 %ca.37, 1116 br i1 true, label %for.body10, label %for.cond.loopexit.loopexit117 118for.end14.loopexit: ; preds = %for.cond.loopexit119 br label %for.end14120 121for.end14: ; preds = %for.end14.loopexit, %for.cond.preheader122 br i1 %cmp, label %for.cond5.preheader.lr.ph.1, label %for.end14.1123 124for.cond5.preheader.lr.ph.1: ; preds = %for.end14125 br label %for.cond5.preheader.1126 127for.cond5.preheader.1: ; preds = %for.cond.loopexit.1, %for.cond5.preheader.lr.ph.1128 %ca.19.1 = phi i64 [ 0, %for.cond5.preheader.lr.ph.1 ], [ %ca.3.lcssa.1, %for.cond.loopexit.1 ]129 br i1 true, label %for.cond8.preheader.1, label %for.body7.preheader.1130 131for.body7.preheader.1: ; preds = %for.cond5.preheader.1132 br label %for.body7.1133 134for.body7.1: ; preds = %for.body7.1, %for.body7.preheader.1135 %ca.26.1 = phi i64 [ %inc.1, %for.body7.1 ], [ %ca.19.1, %for.body7.preheader.1 ]136 %inc.1 = add nsw i64 %ca.26.1, 1137 %arrayidx.1 = getelementptr inbounds double, ptr %bx, i64 %ca.26.1138 store double 0.000000e+00, ptr %arrayidx.1, align 8139 br i1 true, label %for.cond8.preheader.loopexit.1, label %for.body7.1140 141for.cond8.preheader.loopexit.1: ; preds = %for.body7.1142 %inc.lcssa.1 = phi i64 [ %inc.1, %for.body7.1 ]143 br label %for.cond8.preheader.1144 145for.cond8.preheader.1: ; preds = %for.cond8.preheader.loopexit.1, %for.cond5.preheader.1146 %ca.2.lcssa.1 = phi i64 [ %ca.19.1, %for.cond5.preheader.1 ], [ %inc.lcssa.1, %for.cond8.preheader.loopexit.1 ]147 br i1 false, label %for.body10.preheader.1, label %for.cond.loopexit.1148 149for.body10.preheader.1: ; preds = %for.cond8.preheader.1150 br label %for.body10.1151 152for.body10.1: ; preds = %for.body10.1, %for.body10.preheader.1153 %ca.37.1 = phi i64 [ %inc11.1, %for.body10.1 ], [ %ca.2.lcssa.1, %for.body10.preheader.1 ]154 %inc11.1 = add nsw i64 %ca.37.1, 1155 br i1 false, label %for.body10.1, label %for.cond.loopexit.loopexit.1156 157for.cond.loopexit.loopexit.1: ; preds = %for.body10.1158 %inc11.lcssa.1 = phi i64 [ %inc11.1, %for.body10.1 ]159 br label %for.cond.loopexit.1160 161for.cond.loopexit.1: ; preds = %for.cond.loopexit.loopexit.1, %for.cond8.preheader.1162 %ca.3.lcssa.1 = phi i64 [ %ca.2.lcssa.1, %for.cond8.preheader.1 ], [ %inc11.lcssa.1, %for.cond.loopexit.loopexit.1 ]163 br i1 %cmp, label %for.cond5.preheader.1, label %for.end14.loopexit.1164 165for.end14.loopexit.1: ; preds = %for.cond.loopexit.1166 br label %for.end14.1167 168for.end14.1: ; preds = %for.end14.loopexit.1, %for.end14169 ret void170}171