This one required quite a bit of 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/oYWv4cTnK - for intels `Block RThroughput: =10.0`; for ryzens, `Block RThroughput: <=8.0`
So pick cost of `10`.
For store we have:
https://godbolt.org/z/33GMhrsG9 - for intels `Block RThroughput: =12.0`; for ryzens, `Block RThroughput: <=8.0`
So pick cost of `12`.
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/D111027
{3, MVT::v2i64, 1}, // (load 6i64 and) deinterleave into 3 x 2i64
{3, MVT::v4i64, 5}, // (load 12i64 and) deinterleave into 3 x 4i64
+ {3, MVT::v8i64, 10}, // (load 24i64 and) deinterleave into 3 x 8i64
{4, MVT::v2i8, 4}, // (load 8i8 and) deinterleave into 4 x 2i8
{4, MVT::v4i8, 4}, // (load 16i8 and) deinterleave into 4 x 4i8
{3, MVT::v2i64, 4}, // interleave 3 x 2i64 into 6i64 (and store)
{3, MVT::v4i64, 6}, // interleave 3 x 4i64 into 12i64 (and store)
+ {3, MVT::v8i64, 12}, // interleave 3 x 8i64 into 24i64 (and store)
{4, MVT::v2i8, 4}, // interleave 4 x 2i8 into 8i8 (and store)
{4, MVT::v4i8, 4}, // interleave 4 x 4i8 into 16i8 (and store)
; AVX2: LV: Found an estimated cost of 1 for VF 1 For instruction: %v0 = load double, double* %in0, align 8
; AVX2: LV: Found an estimated cost of 3 for VF 2 For instruction: %v0 = load double, double* %in0, align 8
; AVX2: LV: Found an estimated cost of 8 for VF 4 For instruction: %v0 = load double, double* %in0, align 8
-; AVX2: LV: Found an estimated cost of 48 for VF 8 For instruction: %v0 = load double, double* %in0, align 8
+; AVX2: LV: Found an estimated cost of 16 for VF 8 For instruction: %v0 = load double, double* %in0, align 8
; AVX2: LV: Found an estimated cost of 96 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
; AVX2: LV: Found an estimated cost of 1 for VF 1 For instruction: %v0 = load i64, i64* %in0, align 8
; AVX2: LV: Found an estimated cost of 3 for VF 2 For instruction: %v0 = load i64, i64* %in0, align 8
; AVX2: LV: Found an estimated cost of 8 for VF 4 For instruction: %v0 = load i64, i64* %in0, align 8
-; AVX2: LV: Found an estimated cost of 78 for VF 8 For instruction: %v0 = load i64, i64* %in0, align 8
+; AVX2: LV: Found an estimated cost of 16 for VF 8 For instruction: %v0 = load i64, i64* %in0, align 8
; AVX2: LV: Found an estimated cost of 156 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
; AVX2: LV: Found an estimated cost of 1 for VF 1 For instruction: store double %v2, double* %out2, align 8
; AVX2: LV: Found an estimated cost of 6 for VF 2 For instruction: store double %v2, double* %out2, align 8
; AVX2: LV: Found an estimated cost of 9 for VF 4 For instruction: store double %v2, double* %out2, align 8
-; AVX2: LV: Found an estimated cost of 54 for VF 8 For instruction: store double %v2, double* %out2, align 8
+; AVX2: LV: Found an estimated cost of 18 for VF 8 For instruction: store double %v2, double* %out2, align 8
; AVX2: LV: Found an estimated cost of 108 for VF 16 For instruction: store double %v2, double* %out2, align 8
;
; AVX512: LV: Found an estimated cost of 1 for VF 1 For instruction: store double %v2, double* %out2, align 8
; AVX2: LV: Found an estimated cost of 1 for VF 1 For instruction: store i64 %v2, i64* %out2, align 8
; AVX2: LV: Found an estimated cost of 6 for VF 2 For instruction: store i64 %v2, i64* %out2, align 8
; AVX2: LV: Found an estimated cost of 9 for VF 4 For instruction: store i64 %v2, i64* %out2, align 8
-; AVX2: LV: Found an estimated cost of 78 for VF 8 For instruction: store i64 %v2, i64* %out2, align 8
+; AVX2: LV: Found an estimated cost of 18 for VF 8 For instruction: store i64 %v2, i64* %out2, align 8
; AVX2: LV: Found an estimated cost of 156 for VF 16 For instruction: store i64 %v2, i64* %out2, align 8
;
; AVX512: LV: Found an estimated cost of 1 for VF 1 For instruction: store i64 %v2, i64* %out2, align 8