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1; RUN: opt -passes=loop-vectorize -debug-only=loop-vectorize,vplan -disable-output -prefer-predicate-over-epilogue=scalar-epilogue 2>&1 < %s | FileCheck %s2; REQUIRES: asserts3 4target triple = "aarch64"5 6; Test that shows how many registers the loop vectorizer thinks an illegal <VF x i1> will consume.7 8; CHECK-LABEL: LV: Checking a loop in 'or_reduction_neon' from <stdin>9; CHECK: LV(REG): VF = 3210; CHECK-NEXT: LV(REG): Found max usage: 2 item11; CHECK-NEXT: LV(REG): RegisterClass: Generic::ScalarRC, 2 registers12; CHECK-NEXT: LV(REG): RegisterClass: Generic::VectorRC, 72 registers13 14define i1 @or_reduction_neon(i32 %arg, ptr %ptr) {15entry:16 br label %loop17exit:18 ret i1 %reduction_next19loop:20 %induction = phi i32 [ 0, %entry ], [ %induction_next, %loop ]21 %reduction = phi i1 [ 0, %entry ], [ %reduction_next, %loop ]22 %gep = getelementptr inbounds i32, ptr %ptr, i32 %induction23 %loaded = load i32, ptr %gep24 %i1 = icmp eq i32 %loaded, %induction25 %reduction_next = or i1 %i1, %reduction26 %induction_next = add nuw i32 %induction, 127 %cond = icmp eq i32 %induction_next, %arg28 br i1 %cond, label %exit, label %loop, !llvm.loop !3229}30 31; CHECK-LABEL: LV: Checking a loop in 'or_reduction_sve'32; CHECK: LV(REG): VF = 6433; CHECK-NEXT: LV(REG): Found max usage: 2 item34; CHECK-NEXT: LV(REG): RegisterClass: Generic::ScalarRC, 2 registers35; CHECK-NEXT: LV(REG): RegisterClass: Generic::VectorRC, 136 registers36 37define i1 @or_reduction_sve(i32 %arg, ptr %ptr) vscale_range(2,2) "target-features"="+sve" {38entry:39 br label %loop40exit:41 ret i1 %reduction_next42loop:43 %induction = phi i32 [ 0, %entry ], [ %induction_next, %loop ]44 %reduction = phi i1 [ true, %entry ], [ %reduction_next, %loop ]45 %gep = getelementptr inbounds i32, ptr %ptr, i32 %induction46 %loaded = load i32, ptr %gep47 %i1 = icmp eq i32 %loaded, %induction48 %reduction_next = or i1 %i1, %reduction49 %induction_next = add nuw i32 %induction, 150 %cond = icmp eq i32 %induction_next, %arg51 br i1 %cond, label %exit, label %loop, !llvm.loop !6452}53 54!32 = distinct !{!32, !33}55!33 = !{!"llvm.loop.vectorize.width", i32 32}56!64 = distinct !{!64, !65}57!65 = !{!"llvm.loop.vectorize.width", i32 64}58