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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 42; RUN: opt -passes=newgvn -S -o - %s | FileCheck %s3 4; If a branch has two identical successors, we cannot declare either dead.5 6define void @widget(i1 %p) {7; CHECK-LABEL: define void @widget(8; CHECK-SAME: i1 [[P:%.*]]) {9; CHECK-NEXT: entry:10; CHECK-NEXT: br label [[BB2:%.*]]11; CHECK: bb2:12; CHECK-NEXT: [[T1:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[T2:%.*]], [[BB7:%.*]] ]13; CHECK-NEXT: [[T2]] = add i64 [[T1]], 114; CHECK-NEXT: [[T3:%.*]] = icmp ult i64 0, [[T2]]15; CHECK-NEXT: br i1 [[T3]], label [[BB3:%.*]], label [[BB4:%.*]]16; CHECK: bb3:17; CHECK-NEXT: [[T4:%.*]] = call i64 @f()18; CHECK-NEXT: br label [[BB4]]19; CHECK: bb4:20; CHECK-NEXT: br i1 [[P]], label [[BB5:%.*]], label [[BB6:%.*]]21; CHECK: bb5:22; CHECK-NEXT: br i1 true, label [[BB7]], label [[BB7]]23; CHECK: bb6:24; CHECK-NEXT: br i1 true, label [[BB7]], label [[BB7]]25; CHECK: bb7:26; CHECK-NEXT: br i1 [[P]], label [[BB2]], label [[BB8:%.*]]27; CHECK: bb8:28; CHECK-NEXT: ret void29;30entry:31 br label %bb232 33bb2:34 %t1 = phi i64 [ 0, %entry ], [ %t5, %bb7 ]35 %t2 = add i64 %t1, 136 %t3 = icmp ult i64 0, %t237 br i1 %t3, label %bb3, label %bb438 39bb3:40 %t4 = call i64 @f()41 br label %bb442 43bb4:44 %foo = phi i64 [ %t4, %bb3 ], [ 0, %bb2 ]45 br i1 %p, label %bb5, label %bb646 47bb5:48 br i1 true, label %bb7, label %bb749 50bb6:51 br i1 true, label %bb7, label %bb752 53bb7:54 %t5 = add i64 %t1, 155 br i1 %p, label %bb2, label %bb856 57bb8:58 ret void59}60 61declare i64 @f()62