1 ; REQUIRES: asserts 2 ; RUN: opt -loop-vectorize -S -mcpu=core-avx2 --debug-only=loop-vectorize -vectorizer-maximize-bandwidth < %s 2>&1 | FileCheck %s 3 4 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 5 target triple = "x86_64-unknown-linux-gnu" 6 7 ; Function Attrs: norecurse nounwind readonly uwtable 8 define i32 @doit_stride3(i8* nocapture readonly %Ptr, i32 %Nels) { 9 ;CHECK: LV: Found an estimated cost of 1 for VF 1 For instruction: %0 = load i8 10 ;CHECK: LV: Found an estimated cost of 11 for VF 2 For instruction: %0 = load i8 11 ;CHECK: LV: Found an estimated cost of 5 for VF 4 For instruction: %0 = load i8 12 ;CHECK: LV: Found an estimated cost of 10 for VF 8 For instruction: %0 = load i8 13 ;CHECK: LV: Found an estimated cost of 13 for VF 16 For instruction: %0 = load i8 14 ;CHECK: LV: Found an estimated cost of 16 for VF 32 For instruction: %0 = load i8 15 entry: 16 %cmp13 = icmp sgt i32 %Nels, 0 17 br i1 %cmp13, label %for.body.preheader, label %for.end 18 19 for.body.preheader: 20 br label %for.body 21 22 for.body: 23 %Ptr.addr.016 = phi i8* [ %incdec.ptr2, %for.body ], [ %Ptr, %for.body.preheader ] 24 %i.015 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ] 25 %s.014 = phi i32 [ %add6, %for.body ], [ 0, %for.body.preheader ] 26 %incdec.ptr = getelementptr inbounds i8, i8* %Ptr.addr.016, i64 1 27 %0 = load i8, i8* %Ptr.addr.016, align 1 28 %incdec.ptr1 = getelementptr inbounds i8, i8* %Ptr.addr.016, i64 2 29 %1 = load i8, i8* %incdec.ptr, align 1 30 %incdec.ptr2 = getelementptr inbounds i8, i8* %Ptr.addr.016, i64 3 31 %2 = load i8, i8* %incdec.ptr1, align 1 32 %conv = zext i8 %0 to i32 33 %conv3 = zext i8 %1 to i32 34 %conv4 = zext i8 %2 to i32 35 %add = add i32 %s.014, %conv 36 %add5 = add i32 %add, %conv3 37 %add6 = add i32 %add5, %conv4 38 %inc = add nuw nsw i32 %i.015, 1 39 %exitcond = icmp eq i32 %inc, %Nels 40 br i1 %exitcond, label %for.end.loopexit, label %for.body 41 42 for.end.loopexit: 43 %add6.lcssa = phi i32 [ %add6, %for.body ] 44 br label %for.end 45 46 for.end: 47 %s.0.lcssa = phi i32 [ 0, %entry ], [ %add6.lcssa, %for.end.loopexit ] 48 ret i32 %s.0.lcssa 49 } 50 51 ; Function Attrs: norecurse nounwind readonly uwtable 52 define i32 @doit_stride4(i8* nocapture readonly %Ptr, i32 %Nels) local_unnamed_addr { 53 ;CHECK: LV: Found an estimated cost of 1 for VF 1 For instruction: %0 = load i8 54 ;CHECK: LV: Found an estimated cost of 13 for VF 2 For instruction: %0 = load i8 55 ;CHECK: LV: Found an estimated cost of 5 for VF 4 For instruction: %0 = load i8 56 ;CHECK: LV: Found an estimated cost of 21 for VF 8 For instruction: %0 = load i8 57 ;CHECK: LV: Found an estimated cost of 41 for VF 16 For instruction: %0 = load i8 58 ;CHECK: LV: Found an estimated cost of 84 for VF 32 For instruction: %0 = load i8 59 entry: 60 %cmp59 = icmp sgt i32 %Nels, 0 61 br i1 %cmp59, label %for.body.preheader, label %for.end 62 63 for.body.preheader: 64 br label %for.body 65 66 for.body: ; preds = %for.body.preheader, %for.body 67 %Ptr.addr.062 = phi i8* [ %incdec.ptr3, %for.body ], [ %Ptr, %for.body.preheader ] 68 %i.061 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ] 69 %s.060 = phi i32 [ %cond39, %for.body ], [ 0, %for.body.preheader ] 70 %incdec.ptr = getelementptr inbounds i8, i8* %Ptr.addr.062, i64 1 71 %0 = load i8, i8* %Ptr.addr.062, align 1 72 %incdec.ptr1 = getelementptr inbounds i8, i8* %Ptr.addr.062, i64 2 73 %1 = load i8, i8* %incdec.ptr, align 1 74 %incdec.ptr2 = getelementptr inbounds i8, i8* %Ptr.addr.062, i64 3 75 %2 = load i8, i8* %incdec.ptr1, align 1 76 %incdec.ptr3 = getelementptr inbounds i8, i8* %Ptr.addr.062, i64 4 77 %3 = load i8, i8* %incdec.ptr2, align 1 78 %cmp5 = icmp ult i8 %0, %1 79 %.sink = select i1 %cmp5, i8 %0, i8 %1 80 %cmp12 = icmp ult i8 %.sink, %2 81 %.sink40 = select i1 %cmp12, i8 %.sink, i8 %2 82 %cmp23 = icmp ult i8 %.sink40, %3 83 %.sink41 = select i1 %cmp23, i8 %.sink40, i8 %3 84 %conv28 = zext i8 %.sink41 to i32 85 %cmp33 = icmp slt i32 %s.060, %conv28 86 %cond39 = select i1 %cmp33, i32 %s.060, i32 %conv28 87 %inc = add nuw nsw i32 %i.061, 1 88 %exitcond = icmp eq i32 %inc, %Nels 89 br i1 %exitcond, label %for.end.loopexit, label %for.body 90 91 for.end.loopexit: 92 %cond39.lcssa = phi i32 [ %cond39, %for.body ] 93 br label %for.end 94 95 for.end: 96 %s.0.lcssa = phi i32 [ 0, %entry ], [ %cond39.lcssa, %for.end.loopexit ] 97 ret i32 %s.0.lcssa 98 } 99
