1; This is the loop in c++ being vectorize in this file with 2;experimental.vector.reverse 3; #pragma clang loop vectorize_width(8, scalable) 4; for (int i = N-1; i >= 0; --i) 5; a[i] = b[i] + 1.0; 6 7; RUN: opt -loop-vectorize -scalable-vectorization=on -dce -instcombine -mtriple aarch64-linux-gnu -S < %s | FileCheck %s 8 9define void @vector_reverse_f64(i64 %N, double* %a, double* %b) #0{ 10; CHECK-LABEL: @vector_reverse_f64 11; CHECK-LABEL: vector.body: 12; CHECK: %[[ADD:.*]] = add i64 %{{.*}}, %N 13; CHECK-NEXT: %[[GEP:.*]] = getelementptr inbounds double, double* %b, i64 %[[ADD]] 14; CHECK-NEXT: %[[VSCALE:.*]] = call i32 @llvm.vscale.i32() 15; CHECK-NEXT: %[[MUL:.*]] = mul i32 %[[VSCALE]], -8 16; CHECK-NEXT: %[[OR:.*]] = or i32 %[[MUL]], 1 17; CHECK-NEXT: %[[SEXT:.*]] = sext i32 %[[OR]] to i64 18; CHECK-NEXT: %[[GEP1:.*]] = getelementptr inbounds double, double* %[[GEP]], i64 %[[SEXT]] 19; CHECK-NEXT: %[[CAST:.*]] = bitcast double* %[[GEP1]] to <vscale x 8 x double>* 20; CHECK-NEXT: %[[WIDE:.*]] = load <vscale x 8 x double>, <vscale x 8 x double>* %[[CAST]], align 8 21; CHECK-NEXT: %[[REVERSE:.*]] = call <vscale x 8 x double> @llvm.experimental.vector.reverse.nxv8f64(<vscale x 8 x double> %[[WIDE]]) 22; CHECK-NEXT: %[[FADD:.*]] = fadd <vscale x 8 x double> %[[REVERSE]], shufflevector 23; CHECK-NEXT: %[[GEP2:.*]] = getelementptr inbounds double, double* %a, i64 %[[ADD]] 24; CHECK-NEXT: %[[REVERSE6:.*]] = call <vscale x 8 x double> @llvm.experimental.vector.reverse.nxv8f64(<vscale x 8 x double> %[[FADD]]) 25; CHECK-NEXT: %[[VSCALE1:.*]] = call i32 @llvm.vscale.i32() 26; CHECK-NEXT: %[[MUL1:.*]] = mul i32 %[[VSCALE1]], -8 27; CHECK-NEXT: %[[OR1:.*]] = or i32 %[[MUL1]], 1 28; CHECK-NEXT: %[[SEXT1:.*]] = sext i32 %[[OR1]] to i64 29; CHECK-NEXT: %[[GEP3:.*]] = getelementptr inbounds double, double* %[[GEP2]], i64 %[[SEXT1]] 30; CHECK-NEXT: %[[CAST1:.*]] = bitcast double* %[[GEP3]] to <vscale x 8 x double>* 31; CHECK-NEXT: store <vscale x 8 x double> %[[REVERSE6]], <vscale x 8 x double>* %[[CAST1]], align 8 32 33entry: 34 %cmp7 = icmp sgt i64 %N, 0 35 br i1 %cmp7, label %for.body, label %for.cond.cleanup 36 37for.cond.cleanup: ; preds = %for.body 38 ret void 39 40for.body: ; preds = %entry, %for.body 41 %i.08.in = phi i64 [ %i.08, %for.body ], [ %N, %entry ] 42 %i.08 = add nsw i64 %i.08.in, -1 43 %arrayidx = getelementptr inbounds double, double* %b, i64 %i.08 44 %0 = load double, double* %arrayidx, align 8 45 %add = fadd double %0, 1.000000e+00 46 %arrayidx1 = getelementptr inbounds double, double* %a, i64 %i.08 47 store double %add, double* %arrayidx1, align 8 48 %cmp = icmp sgt i64 %i.08.in, 1 49 br i1 %cmp, label %for.body, label %for.cond.cleanup, !llvm.loop !0 50} 51 52 53define void @vector_reverse_i64(i64 %N, i64* %a, i64* %b) #0 { 54; CHECK-LABEL: vector_reverse_i64 55; CHECK-LABEL: vector.body: 56; CHECK: %[[ADD:.*]] = add i64 %{{.*}}, %N 57; CHECK-NEXT: %[[GEP:.*]] = getelementptr inbounds i64, i64* %b, i64 %[[ADD]] 58; CHECK-NEXT: %[[VSCALE:.*]] = call i32 @llvm.vscale.i32() 59; CHECK-NEXT: %[[MUL:.*]] = mul i32 %[[VSCALE]], -8 60; CHECK-NEXT: %[[OR:.*]] = or i32 %[[MUL]], 1 61; CHECK-NEXT: %[[SEXT:.*]] = sext i32 %[[OR]] to i64 62; CHECK-NEXT: %[[GEP1:.*]] = getelementptr inbounds i64, i64* %[[GEP]], i64 %[[SEXT]] 63; CHECK-NEXT: %[[CAST:.*]] = bitcast i64* %[[GEP1]] to <vscale x 8 x i64>* 64; CHECK-NEXT: %[[WIDE:.*]] = load <vscale x 8 x i64>, <vscale x 8 x i64>* %[[CAST]], align 8 65; CHECK-NEXT: %[[REVERSE:.*]] = call <vscale x 8 x i64> @llvm.experimental.vector.reverse.nxv8i64(<vscale x 8 x i64> %[[WIDE]]) 66; CHECK-NEXT: %[[ADD1:.*]] = add <vscale x 8 x i64> %[[REVERSE]] 67; CHECK-NEXT: %[[GEP2:.*]] = getelementptr inbounds i64, i64* %a, i64 %[[ADD]] 68; CHECK-NEXT: %[[REVERSE6]] = call <vscale x 8 x i64> @llvm.experimental.vector.reverse.nxv8i64(<vscale x 8 x i64> %[[ADD1]]) 69; CHECK-NEXT: %[[VSCALE:.*]] = call i32 @llvm.vscale.i32() 70; CHECK-NEXT: %[[MUL1:.*]] = mul i32 %[[VSCALE]], -8 71; CHECK-NEXT: %[[OR1:.*]] = or i32 %[[MUL1]], 1 72; CHECK-NEXT: %[[SEXT1:.*]] = sext i32 %[[OR1]] to i64 73; CHECK-NEXT: %[[GEP3:.*]] = getelementptr inbounds i64, i64* %[[GEP2]], i64 %[[SEXT1]] 74; CHECK-NEXT: %[[CAST1:.*]] = bitcast i64* %[[GEP3]] to <vscale x 8 x i64>* 75; CHECK-NEXT: store <vscale x 8 x i64> %[[REVERSE6]], <vscale x 8 x i64>* %[[CAST1]], align 8 76 77entry: 78 %cmp8 = icmp sgt i64 %N, 0 79 br i1 %cmp8, label %for.body, label %for.cond.cleanup 80 81for.cond.cleanup: ; preds = %for.body 82 ret void 83 84for.body: ; preds = %entry, %for.body 85 %i.09.in = phi i64 [ %i.09, %for.body ], [ %N, %entry ] 86 %i.09 = add nsw i64 %i.09.in, -1 87 %arrayidx = getelementptr inbounds i64, i64* %b, i64 %i.09 88 %0 = load i64, i64* %arrayidx, align 8 89 %add = add i64 %0, 1 90 %arrayidx2 = getelementptr inbounds i64, i64* %a, i64 %i.09 91 store i64 %add, i64* %arrayidx2, align 8 92 %cmp = icmp sgt i64 %i.09.in, 1 93 br i1 %cmp, label %for.body, label %for.cond.cleanup, !llvm.loop !0 94} 95 96attributes #0 = { "target-cpu"="generic" "target-features"="+neon,+sve" } 97 98!0 = distinct !{!0, !1, !2, !3, !4} 99!1 = !{!"llvm.loop.mustprogress"} 100!2 = !{!"llvm.loop.vectorize.width", i32 8} 101!3 = !{!"llvm.loop.vectorize.scalable.enable", i1 true} 102!4 = !{!"llvm.loop.vectorize.enable", i1 true} 103 104