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| ; REQUIRES: asserts
; RUN: opt -loop-vectorize -S -mcpu=core-avx2 --debug-only=loop-vectorize -vectorizer-maximize-bandwidth < %s 2>&1 | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; Function Attrs: norecurse nounwind readonly uwtable
define i32 @doit_stride3(i8* nocapture readonly %Ptr, i32 %Nels) {
;CHECK: LV: Found an estimated cost of 1 for VF 1 For instruction: %0 = load i8
;CHECK: LV: Found an estimated cost of 11 for VF 2 For instruction: %0 = load i8
;CHECK: LV: Found an estimated cost of 5 for VF 4 For instruction: %0 = load i8
;CHECK: LV: Found an estimated cost of 10 for VF 8 For instruction: %0 = load i8
;CHECK: LV: Found an estimated cost of 13 for VF 16 For instruction: %0 = load i8
;CHECK: LV: Found an estimated cost of 16 for VF 32 For instruction: %0 = load i8
entry:
%cmp13 = icmp sgt i32 %Nels, 0
br i1 %cmp13, label %for.body.preheader, label %for.end
for.body.preheader:
br label %for.body
for.body:
%Ptr.addr.016 = phi i8* [ %incdec.ptr2, %for.body ], [ %Ptr, %for.body.preheader ]
%i.015 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ]
%s.014 = phi i32 [ %add6, %for.body ], [ 0, %for.body.preheader ]
%incdec.ptr = getelementptr inbounds i8, i8* %Ptr.addr.016, i64 1
%0 = load i8, i8* %Ptr.addr.016, align 1
%incdec.ptr1 = getelementptr inbounds i8, i8* %Ptr.addr.016, i64 2
%1 = load i8, i8* %incdec.ptr, align 1
%incdec.ptr2 = getelementptr inbounds i8, i8* %Ptr.addr.016, i64 3
%2 = load i8, i8* %incdec.ptr1, align 1
%conv = zext i8 %0 to i32
%conv3 = zext i8 %1 to i32
%conv4 = zext i8 %2 to i32
%add = add i32 %s.014, %conv
%add5 = add i32 %add, %conv3
%add6 = add i32 %add5, %conv4
%inc = add nuw nsw i32 %i.015, 1
%exitcond = icmp eq i32 %inc, %Nels
br i1 %exitcond, label %for.end.loopexit, label %for.body
for.end.loopexit:
%add6.lcssa = phi i32 [ %add6, %for.body ]
br label %for.end
for.end:
%s.0.lcssa = phi i32 [ 0, %entry ], [ %add6.lcssa, %for.end.loopexit ]
ret i32 %s.0.lcssa
}
; Function Attrs: norecurse nounwind readonly uwtable
define i32 @doit_stride4(i8* nocapture readonly %Ptr, i32 %Nels) local_unnamed_addr {
;CHECK: LV: Found an estimated cost of 1 for VF 1 For instruction: %0 = load i8
;CHECK: LV: Found an estimated cost of 13 for VF 2 For instruction: %0 = load i8
;CHECK: LV: Found an estimated cost of 5 for VF 4 For instruction: %0 = load i8
;CHECK: LV: Found an estimated cost of 21 for VF 8 For instruction: %0 = load i8
;CHECK: LV: Found an estimated cost of 41 for VF 16 For instruction: %0 = load i8
;CHECK: LV: Found an estimated cost of 84 for VF 32 For instruction: %0 = load i8
entry:
%cmp59 = icmp sgt i32 %Nels, 0
br i1 %cmp59, label %for.body.preheader, label %for.end
for.body.preheader:
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%Ptr.addr.062 = phi i8* [ %incdec.ptr3, %for.body ], [ %Ptr, %for.body.preheader ]
%i.061 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ]
%s.060 = phi i32 [ %cond39, %for.body ], [ 0, %for.body.preheader ]
%incdec.ptr = getelementptr inbounds i8, i8* %Ptr.addr.062, i64 1
%0 = load i8, i8* %Ptr.addr.062, align 1
%incdec.ptr1 = getelementptr inbounds i8, i8* %Ptr.addr.062, i64 2
%1 = load i8, i8* %incdec.ptr, align 1
%incdec.ptr2 = getelementptr inbounds i8, i8* %Ptr.addr.062, i64 3
%2 = load i8, i8* %incdec.ptr1, align 1
%incdec.ptr3 = getelementptr inbounds i8, i8* %Ptr.addr.062, i64 4
%3 = load i8, i8* %incdec.ptr2, align 1
%cmp5 = icmp ult i8 %0, %1
%.sink = select i1 %cmp5, i8 %0, i8 %1
%cmp12 = icmp ult i8 %.sink, %2
%.sink40 = select i1 %cmp12, i8 %.sink, i8 %2
%cmp23 = icmp ult i8 %.sink40, %3
%.sink41 = select i1 %cmp23, i8 %.sink40, i8 %3
%conv28 = zext i8 %.sink41 to i32
%cmp33 = icmp slt i32 %s.060, %conv28
%cond39 = select i1 %cmp33, i32 %s.060, i32 %conv28
%inc = add nuw nsw i32 %i.061, 1
%exitcond = icmp eq i32 %inc, %Nels
br i1 %exitcond, label %for.end.loopexit, label %for.body
for.end.loopexit:
%cond39.lcssa = phi i32 [ %cond39, %for.body ]
br label %for.end
for.end:
%s.0.lcssa = phi i32 [ 0, %entry ], [ %cond39.lcssa, %for.end.loopexit ]
ret i32 %s.0.lcssa
}
|