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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt -S -passes=instcombine %s -o - | FileCheck %s3 4; All the "useless" instructions should be removed and we shouldn't crash.5 6target datalayout = "p:16:16"7 8%i64_t = type i649 10@a = external global i1611@b = external global ptr12 13define void @f(i1 %cond) {14; CHECK-LABEL: @f(15; CHECK-NEXT: bb0:16; CHECK-NEXT: [[T1:%.*]] = alloca i64, align 817; CHECK-NEXT: br i1 [[COND:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]18; CHECK: bb1:19; CHECK-NEXT: unreachable20; CHECK: bb2:21; CHECK-NEXT: [[T9:%.*]] = load ptr, ptr @b, align 222; CHECK-NEXT: store i16 0, ptr [[T9]], align 223; CHECK-NEXT: [[T10:%.*]] = load i32, ptr [[T1]], align 424; CHECK-NEXT: [[T11:%.*]] = add i32 [[T10]], -125; CHECK-NEXT: store i32 [[T11]], ptr [[T1]], align 426; CHECK-NEXT: ret void27;28bb0:29 %t1 = alloca %i64_t30 %useless4 = getelementptr inbounds i16, ptr %t1, i16 undef31 br i1 %cond, label %bb1, label %bb232 33bb1: ; preds = %bb034 %useless6 = insertvalue [1 x ptr] undef, ptr %t1, 035 %useless7 = insertvalue [1 x ptr] %useless6, ptr null, 036 %t8 = ptrtoint ptr %t1 to i1637 store i16 %t8, ptr @a38 unreachable39 40bb2: ; preds = %bb041 %t9 = load ptr, ptr @b42 store i16 0, ptr %t943 %t10 = load i32, ptr %t144 %t11 = sub i32 %t10, 145 store i32 %t11, ptr %t146 ret void47}48