| ; This is the loop in c++ being vectorize in this file with |
| ;experimental.vector.reverse |
| ; #pragma clang loop vectorize_width(8, scalable) |
| ; for (int i = N-1; i >= 0; --i) |
| ; a[i] = b[i] + 1.0; |
| |
| ; RUN: opt -loop-vectorize -dce -instcombine -mtriple aarch64-linux-gnu -S < %s | FileCheck %s |
| |
| define void @vector_reverse_f64(i64 %N, double* %a, double* %b) #0{ |
| ; CHECK-LABEL: @vector_reverse_f64 |
| ; CHECK-LABEL: vector.body: |
| ; CHECK: %[[ADD:.*]] = add i64 %{{.*}}, %N |
| ; CHECK-NEXT: %[[GEP:.*]] = getelementptr inbounds double, double* %b, i64 %[[ADD]] |
| ; CHECK-NEXT: %[[VSCALE:.*]] = call i32 @llvm.vscale.i32() |
| ; CHECK-NEXT: %[[MUL:.*]] = mul i32 %[[VSCALE]], -8 |
| ; CHECK-NEXT: %[[OR:.*]] = or i32 %[[MUL]], 1 |
| ; CHECK-NEXT: %[[SEXT:.*]] = sext i32 %[[OR]] to i64 |
| ; CHECK-NEXT: %[[GEP1:.*]] = getelementptr inbounds double, double* %[[GEP]], i64 %[[SEXT]] |
| ; CHECK-NEXT: %[[CAST:.*]] = bitcast double* %[[GEP1]] to <vscale x 8 x double>* |
| ; CHECK-NEXT: %[[WIDE:.*]] = load <vscale x 8 x double>, <vscale x 8 x double>* %[[CAST]], align 8 |
| ; CHECK-NEXT: %[[REVERSE:.*]] = call <vscale x 8 x double> @llvm.experimental.vector.reverse.nxv8f64(<vscale x 8 x double> %[[WIDE]]) |
| ; CHECK-NEXT: %[[FADD:.*]] = fadd <vscale x 8 x double> %[[REVERSE]], shufflevector |
| ; CHECK-NEXT: %[[GEP2:.*]] = getelementptr inbounds double, double* %a, i64 %[[ADD]] |
| ; CHECK-NEXT: %[[REVERSE6:.*]] = call <vscale x 8 x double> @llvm.experimental.vector.reverse.nxv8f64(<vscale x 8 x double> %[[FADD]]) |
| ; CHECK-NEXT: %[[VSCALE1:.*]] = call i32 @llvm.vscale.i32() |
| ; CHECK-NEXT: %[[MUL1:.*]] = mul i32 %[[VSCALE1]], -8 |
| ; CHECK-NEXT: %[[OR1:.*]] = or i32 %[[MUL1]], 1 |
| ; CHECK-NEXT: %[[SEXT1:.*]] = sext i32 %[[OR1]] to i64 |
| ; CHECK-NEXT: %[[GEP3:.*]] = getelementptr inbounds double, double* %[[GEP2]], i64 %[[SEXT1]] |
| ; CHECK-NEXT: %[[CAST1:.*]] = bitcast double* %[[GEP3]] to <vscale x 8 x double>* |
| ; CHECK-NEXT: store <vscale x 8 x double> %[[REVERSE6]], <vscale x 8 x double>* %[[CAST1]], align 8 |
| |
| entry: |
| %cmp7 = icmp sgt i64 %N, 0 |
| br i1 %cmp7, label %for.body, label %for.cond.cleanup |
| |
| for.cond.cleanup: ; preds = %for.body |
| ret void |
| |
| for.body: ; preds = %entry, %for.body |
| %i.08.in = phi i64 [ %i.08, %for.body ], [ %N, %entry ] |
| %i.08 = add nsw i64 %i.08.in, -1 |
| %arrayidx = getelementptr inbounds double, double* %b, i64 %i.08 |
| %0 = load double, double* %arrayidx, align 8 |
| %add = fadd double %0, 1.000000e+00 |
| %arrayidx1 = getelementptr inbounds double, double* %a, i64 %i.08 |
| store double %add, double* %arrayidx1, align 8 |
| %cmp = icmp sgt i64 %i.08.in, 1 |
| br i1 %cmp, label %for.body, label %for.cond.cleanup, !llvm.loop !0 |
| } |
| |
| |
| define void @vector_reverse_i64(i64 %N, i64* %a, i64* %b) #0 { |
| ; CHECK-LABEL: vector_reverse_i64 |
| ; CHECK-LABEL: vector.body: |
| ; CHECK: %[[ADD:.*]] = add i64 %{{.*}}, %N |
| ; CHECK-NEXT: %[[GEP:.*]] = getelementptr inbounds i64, i64* %b, i64 %[[ADD]] |
| ; CHECK-NEXT: %[[VSCALE:.*]] = call i32 @llvm.vscale.i32() |
| ; CHECK-NEXT: %[[MUL:.*]] = mul i32 %[[VSCALE]], -8 |
| ; CHECK-NEXT: %[[OR:.*]] = or i32 %[[MUL]], 1 |
| ; CHECK-NEXT: %[[SEXT:.*]] = sext i32 %[[OR]] to i64 |
| ; CHECK-NEXT: %[[GEP1:.*]] = getelementptr inbounds i64, i64* %[[GEP]], i64 %[[SEXT]] |
| ; CHECK-NEXT: %[[CAST:.*]] = bitcast i64* %[[GEP1]] to <vscale x 8 x i64>* |
| ; CHECK-NEXT: %[[WIDE:.*]] = load <vscale x 8 x i64>, <vscale x 8 x i64>* %[[CAST]], align 8 |
| ; CHECK-NEXT: %[[REVERSE:.*]] = call <vscale x 8 x i64> @llvm.experimental.vector.reverse.nxv8i64(<vscale x 8 x i64> %[[WIDE]]) |
| ; CHECK-NEXT: %[[ADD1:.*]] = add <vscale x 8 x i64> %[[REVERSE]] |
| ; CHECK-NEXT: %[[GEP2:.*]] = getelementptr inbounds i64, i64* %a, i64 %[[ADD]] |
| ; CHECK-NEXT: %[[REVERSE6]] = call <vscale x 8 x i64> @llvm.experimental.vector.reverse.nxv8i64(<vscale x 8 x i64> %[[ADD1]]) |
| ; CHECK-NEXT: %[[VSCALE:.*]] = call i32 @llvm.vscale.i32() |
| ; CHECK-NEXT: %[[MUL1:.*]] = mul i32 %[[VSCALE]], -8 |
| ; CHECK-NEXT: %[[OR1:.*]] = or i32 %[[MUL1]], 1 |
| ; CHECK-NEXT: %[[SEXT1:.*]] = sext i32 %[[OR1]] to i64 |
| ; CHECK-NEXT: %[[GEP3:.*]] = getelementptr inbounds i64, i64* %[[GEP2]], i64 %[[SEXT1]] |
| ; CHECK-NEXT: %[[CAST1:.*]] = bitcast i64* %[[GEP3]] to <vscale x 8 x i64>* |
| ; CHECK-NEXT: store <vscale x 8 x i64> %[[REVERSE6]], <vscale x 8 x i64>* %[[CAST1]], align 8 |
| |
| entry: |
| %cmp8 = icmp sgt i64 %N, 0 |
| br i1 %cmp8, label %for.body, label %for.cond.cleanup |
| |
| for.cond.cleanup: ; preds = %for.body |
| ret void |
| |
| for.body: ; preds = %entry, %for.body |
| %i.09.in = phi i64 [ %i.09, %for.body ], [ %N, %entry ] |
| %i.09 = add nsw i64 %i.09.in, -1 |
| %arrayidx = getelementptr inbounds i64, i64* %b, i64 %i.09 |
| %0 = load i64, i64* %arrayidx, align 8 |
| %add = add i64 %0, 1 |
| %arrayidx2 = getelementptr inbounds i64, i64* %a, i64 %i.09 |
| store i64 %add, i64* %arrayidx2, align 8 |
| %cmp = icmp sgt i64 %i.09.in, 1 |
| br i1 %cmp, label %for.body, label %for.cond.cleanup, !llvm.loop !0 |
| } |
| |
| attributes #0 = { "target-cpu"="generic" "target-features"="+neon,+sve" } |
| |
| !0 = distinct !{!0, !1, !2, !3, !4} |
| !1 = !{!"llvm.loop.mustprogress"} |
| !2 = !{!"llvm.loop.vectorize.width", i32 8} |
| !3 = !{!"llvm.loop.vectorize.scalable.enable", i1 true} |
| !4 = !{!"llvm.loop.vectorize.enable", i1 true} |
| |