1; REQUIRES: asserts 2; RUN: opt < %s -passes='loop-vectorize' -force-target-supports-scalable-vectors=true -enable-epilogue-vectorization -epilogue-vectorization-force-VF=2 --debug-only=loop-vectorize -S -scalable-vectorization=on 2>&1 | FileCheck %s 3 4target datalayout = "e-m:e-i64:64-n32:64-v256:256:256-v512:512:512" 5 6; Currently we cannot handle scalable vectorization factors. 7; CHECK: LV: Checking a loop in "f1" 8; CHECK: LEV: Epilogue vectorization factor is forced. 9; CHECK: Epilogue Loop VF:2, Epilogue Loop UF:1 10 11define void @f1(i8* %A) { 12entry: 13 br label %for.body 14 15for.body: 16 %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ] 17 %arrayidx = getelementptr inbounds i8, i8* %A, i64 %iv 18 store i8 1, i8* %arrayidx, align 1 19 %iv.next = add nuw nsw i64 %iv, 1 20 %exitcond = icmp ne i64 %iv.next, 1024 21 br i1 %exitcond, label %for.body, label %exit, !llvm.loop !0 22 23exit: 24 ret void 25} 26 27!0 = !{!0, !1} 28!1 = !{!"llvm.loop.vectorize.scalable.enable", i1 true} 29