| ; 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"} |