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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt < %s -passes=loop-reduce,loop-term-fold -S | FileCheck %s3 4; This test used to crash due to matchSimpleRecurrence matching the simple5; recurrence in pn-loop when evaluating unrelated-loop. Since unrelated-loop6; cannot jump to pn-node isAlmostDeadIV panics.7define void @phi_node_different_bb() {8; CHECK-LABEL: @phi_node_different_bb(9; CHECK-NEXT: br label [[PN_LOOP:%.*]]10; CHECK: pn-loop:11; CHECK-NEXT: [[TMP1:%.*]] = phi i32 [ 1, [[TMP0:%.*]] ], [ [[TMP2:%.*]], [[PN_LOOP]] ]12; CHECK-NEXT: [[TMP2]] = add i32 [[TMP1]], 113; CHECK-NEXT: [[TMP3:%.*]] = icmp ugt i32 [[TMP2]], 114; CHECK-NEXT: br i1 [[TMP3]], label [[PN_LOOP]], label [[UNRELATED_LOOP_PREHEADER:%.*]]15; CHECK: unrelated-loop.preheader:16; CHECK-NEXT: [[DOTLCSSA:%.*]] = phi i32 [ [[TMP2]], [[PN_LOOP]] ]17; CHECK-NEXT: br label [[UNRELATED_LOOP:%.*]]18; CHECK: unrelated-loop:19; CHECK-NEXT: [[TMP4:%.*]] = icmp eq i32 [[DOTLCSSA]], 020; CHECK-NEXT: br i1 [[TMP4]], label [[END:%.*]], label [[UNRELATED_LOOP]]21; CHECK: end:22; CHECK-NEXT: ret void23;24 br label %pn-loop25 26pn-loop: ; preds = %pn-loop, %027 %1 = phi i32 [ 1, %0 ], [ %2, %pn-loop ]28 %2 = add i32 %1, 129 %3 = icmp ugt i32 %2, 130 br i1 %3, label %pn-loop, label %unrelated-loop.preheader31 32unrelated-loop.preheader: ; preds = %pn-loop33 br label %unrelated-loop34 35unrelated-loop: ; preds = %unrelated-loop, %unrelated-loop.preheader36 %4 = icmp eq i32 %2, 037 br i1 %4, label %end, label %unrelated-loop38 39end: ; preds = %unrelated-loop40 ret void41}42