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