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1; RUN: opt -S -passes=jump-threading,verify -o - %s | FileCheck %s2@a = external global i16, align 13 4; CHECK-LABEL: f5; CHECK: bb6:6; CHECK: bb2:7; CHECK: bb3:8; CHECK-NOT: bb0:9; CHECK-NOT: bb1:10; CHECK-NOT: bb4:11; CHECK-NOT: bb5:12define void @f(i32 %p1) {13bb0:14 %0 = icmp eq i32 %p1, 015 br i1 true, label %bb6, label %bb116 17bb1:18 br label %bb219 20bb2:21 %1 = phi i1 [ %0, %bb1 ], [ %2, %bb4 ]22 %2 = and i1 %1, undef23 br i1 %2, label %bb3, label %bb424 25bb3:26 store i16 undef, ptr @a, align 127 br label %bb428 29bb4:30 br i1 %0, label %bb2, label %bb531 32bb5:33 unreachable34 35bb6:36 ret void37}38