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; This test checks that the given loop still beneficial for vecotization
; even if it contains scalarized load (gather on AVX2)
;RUN: opt < %s -loop-vectorize -S -o - | 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 @matrix_row_col([100 x i32]* nocapture readonly %data, i32 %i, i32 %j) local_unnamed_addr #0 {
entry:
%idxprom = sext i32 %i to i64
%idxprom5 = sext i32 %j to i64
br label %for.body
for.cond.cleanup: ; preds = %for.body
ret i32 %add7
for.body: ; preds = %for.body, %entry
; the loop gets vectorized
; first consecutive load as vector load
; CHECK: %wide.load = load <8 x i32>
; second strided load scalarized
; CHECK: load i32
; CHECK: load i32
; CHECK: load i32
; CHECK: load i32
; CHECK: load i32
; CHECK: load i32
; CHECK: load i32
; CHECK: load i32
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%sum.015 = phi i32 [ 0, %entry ], [ %add7, %for.body ]
%arrayidx2 = getelementptr inbounds [100 x i32], [100 x i32]* %data, i64 %idxprom, i64 %indvars.iv
%0 = load i32, i32* %arrayidx2, align 4, !tbaa !1
%arrayidx6 = getelementptr inbounds [100 x i32], [100 x i32]* %data, i64 %indvars.iv, i64 %idxprom5
%1 = load i32, i32* %arrayidx6, align 4, !tbaa !1
%mul = mul nsw i32 %1, %0
%add = add i32 %sum.015, 4
%add7 = add i32 %add, %mul
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 100
br i1 %exitcond, label %for.cond.cleanup, label %for.body
}
attributes #0 = { "target-cpu"="core-avx2" "target-features"="+avx,+avx2,+sse,+sse2,+sse3,+sse4.1,+sse4.2,+ssse3" }
!llvm.ident = !{!0}
!0 = !{!"clang version 4.0.0 (cfe/trunk 284570)"}
!1 = !{!2, !2, i64 0}
!2 = !{!"int", !3, i64 0}
!3 = !{!"omnipotent char", !4, i64 0}
!4 = !{!"Simple C/C++ TBAA"}
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