[X86][Costmodel] Load/store i64 Stride=4 VF=16 interleaving costs

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/9bnKrefcG - for intels `Block RThroughput: =40.0`; for ryzens, `Block RThroughput: =16.0`
So could pick cost of `40`

For store we have:
https://godbolt.org/z/5s3s14dEY - for intels `Block RThroughput: =40.0`; for ryzens, `Block RThroughput: =16.0`
So we could pick cost of `40`.

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

Reviewed By: RKSimon

Differential Revision: https://reviews.llvm.org/D111945
This commit is contained in:
Roman Lebedev 2021-10-17 17:27:40 +03:00
parent 3274ce3a28
commit 91373bf12e
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5 changed files with 6 additions and 4 deletions

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@ -5277,6 +5277,7 @@ InstructionCost X86TTIImpl::getInterleavedMemoryOpCost(
{4, MVT::v2i64, 6}, // (load 8i64 and) deinterleave into 4 x 2i64
{4, MVT::v4i64, 8}, // (load 16i64 and) deinterleave into 4 x 4i64
{4, MVT::v8i64, 20}, // (load 32i64 and) deinterleave into 4 x 8i64
{4, MVT::v16i64, 40}, // (load 64i64 and) deinterleave into 4 x 16i64
{6, MVT::v2i8, 6}, // (load 12i8 and) deinterleave into 6 x 2i8
{6, MVT::v4i8, 14}, // (load 24i8 and) deinterleave into 6 x 4i8
@ -5385,6 +5386,7 @@ InstructionCost X86TTIImpl::getInterleavedMemoryOpCost(
{4, MVT::v2i64, 6}, // interleave 4 x 2i64 into 8i64 (and store)
{4, MVT::v4i64, 8}, // interleave 4 x 4i64 into 16i64 (and store)
{4, MVT::v8i64, 20}, // interleave 4 x 8i64 into 32i64 (and store)
{4, MVT::v16i64, 40}, // interleave 4 x 16i64 into 64i64 (and store)
{6, MVT::v2i8, 7}, // interleave 6 x 2i8 into 12i8 (and store)
{6, MVT::v4i8, 9}, // interleave 6 x 4i8 into 24i8 (and store)

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@ -27,7 +27,7 @@ target triple = "x86_64-unknown-linux-gnu"
; AVX2: LV: Found an estimated cost of 8 for VF 2 For instruction: %v0 = load double, double* %in0, align 8
; AVX2: LV: Found an estimated cost of 12 for VF 4 For instruction: %v0 = load double, double* %in0, align 8
; AVX2: LV: Found an estimated cost of 28 for VF 8 For instruction: %v0 = load double, double* %in0, align 8
; AVX2: LV: Found an estimated cost of 128 for VF 16 For instruction: %v0 = load double, double* %in0, align 8
; AVX2: LV: Found an estimated cost of 56 for VF 16 For instruction: %v0 = load double, double* %in0, align 8
;
; AVX512: LV: Found an estimated cost of 1 for VF 1 For instruction: %v0 = load double, double* %in0, align 8
; AVX512: LV: Found an estimated cost of 5 for VF 2 For instruction: %v0 = load double, double* %in0, align 8

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@ -27,7 +27,7 @@ target triple = "x86_64-unknown-linux-gnu"
; AVX2: LV: Found an estimated cost of 8 for VF 2 For instruction: %v0 = load i64, i64* %in0, align 8
; AVX2: LV: Found an estimated cost of 12 for VF 4 For instruction: %v0 = load i64, i64* %in0, align 8
; AVX2: LV: Found an estimated cost of 28 for VF 8 For instruction: %v0 = load i64, i64* %in0, align 8
; AVX2: LV: Found an estimated cost of 208 for VF 16 For instruction: %v0 = load i64, i64* %in0, align 8
; AVX2: LV: Found an estimated cost of 56 for VF 16 For instruction: %v0 = load i64, i64* %in0, align 8
;
; AVX512: LV: Found an estimated cost of 1 for VF 1 For instruction: %v0 = load i64, i64* %in0, align 8
; AVX512: LV: Found an estimated cost of 5 for VF 2 For instruction: %v0 = load i64, i64* %in0, align 8

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@ -27,7 +27,7 @@ target triple = "x86_64-unknown-linux-gnu"
; AVX2: LV: Found an estimated cost of 8 for VF 2 For instruction: store double %v3, double* %out3, align 8
; AVX2: LV: Found an estimated cost of 12 for VF 4 For instruction: store double %v3, double* %out3, align 8
; AVX2: LV: Found an estimated cost of 28 for VF 8 For instruction: store double %v3, double* %out3, align 8
; AVX2: LV: Found an estimated cost of 128 for VF 16 For instruction: store double %v3, double* %out3, align 8
; AVX2: LV: Found an estimated cost of 56 for VF 16 For instruction: store double %v3, double* %out3, align 8
;
; AVX512: LV: Found an estimated cost of 1 for VF 1 For instruction: store double %v3, double* %out3, align 8
; AVX512: LV: Found an estimated cost of 5 for VF 2 For instruction: store double %v3, double* %out3, align 8

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@ -27,7 +27,7 @@ target triple = "x86_64-unknown-linux-gnu"
; AVX2: LV: Found an estimated cost of 8 for VF 2 For instruction: store i64 %v3, i64* %out3, align 8
; AVX2: LV: Found an estimated cost of 12 for VF 4 For instruction: store i64 %v3, i64* %out3, align 8
; AVX2: LV: Found an estimated cost of 28 for VF 8 For instruction: store i64 %v3, i64* %out3, align 8
; AVX2: LV: Found an estimated cost of 208 for VF 16 For instruction: store i64 %v3, i64* %out3, align 8
; AVX2: LV: Found an estimated cost of 56 for VF 16 For instruction: store i64 %v3, i64* %out3, align 8
;
; AVX512: LV: Found an estimated cost of 1 for VF 1 For instruction: store i64 %v3, i64* %out3, align 8
; AVX512: LV: Found an estimated cost of 5 for VF 2 For instruction: store i64 %v3, i64* %out3, align 8