[X86][Costmodel] Load/store i16 Stride=6 VF=32 interleaving costs

[lebedev.ri]

Summary

A few more tuples are being queried after D111546. Might be good to model them,
They all require a lot of manual assembly surgery.

The only sched models that for cpu's that support avx2
but not avx512 are: haswell, broadwell, skylake, zen1-3

For load we have:
https://godbolt.org/z/YTeT9M7fW - for intels Block RThroughput: <=212.0; for ryzens, Block RThroughput: <=64.0
So could pick cost of 212

For store we have:
https://godbolt.org/z/vc954KEGP - for intels Block RThroughput: <=90.0; for ryzens, Block RThroughput: <=24.0
So we could pick cost of 90.

I'm directly using the shuffling asm the llc produced,
without any manual fixups that may be needed
to ensure sequential execution.

[RKSimon]

LGTM

llvm/lib/Target/X86/X86TargetTransformInfo.cpp

static const CostTblEntry AVX2InterleavedLoadTbl[] = {
       {6, MVT::v8i8, 18},  // (load 48i8 and) deinterleave into 6 x 8i8
       {6, MVT::v16i8, 43}, // (load 96i8 and) deinterleave into 6 x 16i8
       {6, MVT::v32i8, 82}, // (load 192i8 and) deinterleave into 6 x 32i8
 
       {6, MVT::v2i16, 13},   // (load 12i16 and) deinterleave into 6 x 2i16
       {6, MVT::v4i16, 9},    // (load 24i16 and) deinterleave into 6 x 4i16
       {6, MVT::v8i16, 39},   // (load 48i16 and) deinterleave into 6 x 8i16
       {6, MVT::v16i16, 106}, // (load 96i16 and) deinterleave into 6 x 16i16
+      {6, MVT::v32i16, 212}, // (load 192i16 and) deinterleave into 6 x 32i16
 
       {6, MVT::v2i32, 6},   // (load 12i32 and) deinterleave into 6 x 2i32
       {6, MVT::v4i32, 15},  // (load 24i32 and) deinterleave into 6 x 4i32
       {6, MVT::v8i32, 31},  // (load 48i32 and) deinterleave into 6 x 8i32
       {6, MVT::v16i32, 64}, // (load 96i32 and) deinterleave into 6 x 16i32
 
       {6, MVT::v2i64, 6},  // (load 12i64 and) deinterleave into 6 x 2i64
       {6, MVT::v4i64, 18}, // (load 24i64 and) deinterleave into 6 x 4i64
static const CostTblEntry AVX2InterleavedStoreTbl[] = {
       {6, MVT::v8i8, 16},  // interleave 6 x 8i8 into 48i8 (and store)
       {6, MVT::v16i8, 27}, // interleave 6 x 16i8 into 96i8 (and store)
       {6, MVT::v32i8, 90}, // interleave 6 x 32i8 into 192i8 (and store)
 
       {6, MVT::v2i16, 10},  // interleave 6 x 2i16 into 12i16 (and store)
       {6, MVT::v4i16, 15},  // interleave 6 x 4i16 into 24i16 (and store)
       {6, MVT::v8i16, 21},  // interleave 6 x 8i16 into 48i16 (and store)
       {6, MVT::v16i16, 58}, // interleave 6 x 16i16 into 96i16 (and store)
+      {6, MVT::v32i16, 90}, // interleave 6 x 32i16 into 192i16 (and store)
 
       {6, MVT::v2i32, 9},   // interleave 6 x 2i32 into 12i32 (and store)
       {6, MVT::v4i32, 12},  // interleave 6 x 4i32 into 24i32 (and store)
       {6, MVT::v8i32, 33},  // interleave 6 x 8i32 into 48i32 (and store)
       {6, MVT::v16i32, 66}, // interleave 6 x 16i32 into 96i32 (and store)
 
       {6, MVT::v2i64, 8},  // interleave 6 x 2i64 into 12i64 (and store)
       {6, MVT::v4i64, 15}, // interleave 6 x 4i64 into 24i64 (and store)

llvm/test/Analysis/CostModel/X86/interleaved-load-i16-stride-6.ll

 ; AVX1: LV: Found an estimated cost of 258 for VF 16 For instruction:   %v0 = load i16, i16* %in0, align 2
 ; AVX1: LV: Found an estimated cost of 516 for VF 32 For instruction:   %v0 = load i16, i16* %in0, align 2
 ;
 ; AVX2: LV: Found an estimated cost of 1 for VF 1 For instruction:   %v0 = load i16, i16* %in0, align 2
 ; AVX2: LV: Found an estimated cost of 16 for VF 2 For instruction:   %v0 = load i16, i16* %in0, align 2
 ; AVX2: LV: Found an estimated cost of 11 for VF 4 For instruction:   %v0 = load i16, i16* %in0, align 2
 ; AVX2: LV: Found an estimated cost of 42 for VF 8 For instruction:   %v0 = load i16, i16* %in0, align 2
 ; AVX2: LV: Found an estimated cost of 112 for VF 16 For instruction:   %v0 = load i16, i16* %in0, align 2
-; AVX2: LV: Found an estimated cost of 516 for VF 32 For instruction:   %v0 = load i16, i16* %in0, align 2
+; AVX2: LV: Found an estimated cost of 224 for VF 32 For instruction:   %v0 = load i16, i16* %in0, align 2
 ;
 ; AVX512: LV: Found an estimated cost of 1 for VF 1 For instruction:   %v0 = load i16, i16* %in0, align 2
 ; AVX512: LV: Found an estimated cost of 13 for VF 2 For instruction:   %v0 = load i16, i16* %in0, align 2
 ; AVX512: LV: Found an estimated cost of 13 for VF 4 For instruction:   %v0 = load i16, i16* %in0, align 2
 ; AVX512: LV: Found an estimated cost of 17 for VF 8 For instruction:   %v0 = load i16, i16* %in0, align 2
 ; AVX512: LV: Found an estimated cost of 33 for VF 16 For instruction:   %v0 = load i16, i16* %in0, align 2
 ; AVX512: LV: Found an estimated cost of 81 for VF 32 For instruction:   %v0 = load i16, i16* %in0, align 2
 ; AVX512: LV: Found an estimated cost of 342 for VF 64 For instruction:   %v0 = load i16, i16* %in0, align 2

llvm/test/Analysis/CostModel/X86/interleaved-store-i16-stride-6.ll

 ; AVX1: LV: Found an estimated cost of 258 for VF 16 For instruction:   store i16 %v5, i16* %out5, align 2
 ; AVX1: LV: Found an estimated cost of 516 for VF 32 For instruction:   store i16 %v5, i16* %out5, align 2
 ;
 ; AVX2: LV: Found an estimated cost of 1 for VF 1 For instruction:   store i16 %v5, i16* %out5, align 2
 ; AVX2: LV: Found an estimated cost of 13 for VF 2 For instruction:   store i16 %v5, i16* %out5, align 2
 ; AVX2: LV: Found an estimated cost of 17 for VF 4 For instruction:   store i16 %v5, i16* %out5, align 2
 ; AVX2: LV: Found an estimated cost of 24 for VF 8 For instruction:   store i16 %v5, i16* %out5, align 2
 ; AVX2: LV: Found an estimated cost of 64 for VF 16 For instruction:   store i16 %v5, i16* %out5, align 2
-; AVX2: LV: Found an estimated cost of 516 for VF 32 For instruction:   store i16 %v5, i16* %out5, align 2
+; AVX2: LV: Found an estimated cost of 102 for VF 32 For instruction:   store i16 %v5, i16* %out5, align 2
 ;
 ; AVX512: LV: Found an estimated cost of 1 for VF 1 For instruction:   store i16 %v5, i16* %out5, align 2
 ; AVX512: LV: Found an estimated cost of 13 for VF 2 For instruction:   store i16 %v5, i16* %out5, align 2
 ; AVX512: LV: Found an estimated cost of 13 for VF 4 For instruction:   store i16 %v5, i16* %out5, align 2
 ; AVX512: LV: Found an estimated cost of 27 for VF 8 For instruction:   store i16 %v5, i16* %out5, align 2
 ; AVX512: LV: Found an estimated cost of 40 for VF 16 For instruction:   store i16 %v5, i16* %out5, align 2
 ; AVX512: LV: Found an estimated cost of 81 for VF 32 For instruction:   store i16 %v5, i16* %out5, align 2
 ; AVX512: LV: Found an estimated cost of 162 for VF 64 For instruction:   store i16 %v5, i16* %out5, align 2