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1; RUN: opt -passes=instcombine -S < %s | FileCheck %s2 3; This used to crash opt4 5@c = common global i32 0, align 46@b = common global i32 0, align 47@a = common global i16 0, align 28@d = common global i32 0, align 49 10define void @fn3() {11; CHECK: @fn312bb:13 %tmp = load i32, ptr @c, align 414 %tmp1 = icmp eq i32 %tmp, 015 br i1 %tmp1, label %bb2, label %bb616 17bb2: ; preds = %bb18 %tmp3 = load i32, ptr @b, align 419 %tmp.i = add nsw i32 255, %tmp320 %tmp5 = icmp ugt i32 %tmp.i, 25421 br label %bb622 23bb6: ; preds = %bb, %bb224 %tmp7 = phi i1 [ true, %bb ], [ %tmp5, %bb2 ]25 %tmp8 = zext i1 %tmp7 to i3226 %tmp10 = icmp eq i32 %tmp8, 027 %tmp12 = load i16, ptr @a, align 228 %tmp14 = icmp ne i16 %tmp12, 029 %tmp16 = select i1 %tmp10, i1 false, i1 %tmp1430 %tmp17 = zext i1 %tmp16 to i3231 store i32 %tmp17, ptr @d, align 432 ret void33}34