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1; RUN: opt -S < %s -passes=loop-idiom | FileCheck %s2 3declare void @llvm.sideeffect()4 5; Loop idiom recognition across a @llvm.sideeffect.6 7; CHECK-LABEL: zero8; CHECK: llvm.memset9define void @zero(ptr %p, i64 %n) nounwind {10bb7.lr.ph:11 br label %bb712 13bb7:14 %i.02 = phi i64 [ 0, %bb7.lr.ph ], [ %tmp13, %bb7 ]15 %tmp10 = getelementptr inbounds float, ptr %p, i64 %i.0216 store float 0.000000e+00, ptr %tmp10, align 417 %tmp13 = add i64 %i.02, 118 %tmp6 = icmp ult i64 %tmp13, %n19 br i1 %tmp6, label %bb7, label %bb1420 21bb14:22 ret void23}24