; RUN: opt < %s -instcombine -S > %t ; RUN: not grep zext %t ; RUN: not grep slt %t ; RUN: grep "icmp ult" %t ; Instcombine should convert the zext+slt into a simple ult. define void @foo(double* %p) nounwind { entry: br label %bb bb: %indvar = phi i64 [ 0, %entry ], [ %indvar.next, %bb ] %t0 = and i64 %indvar, 65535 %t1 = getelementptr double* %p, i64 %t0 %t2 = load double* %t1, align 8 %t3 = fmul double %t2, 2.2 store double %t3, double* %t1, align 8 %i.04 = trunc i64 %indvar to i16 %t4 = add i16 %i.04, 1 %t5 = zext i16 %t4 to i32 %t6 = icmp slt i32 %t5, 500 %indvar.next = add i64 %indvar, 1 br i1 %t6, label %bb, label %return return: ret void }