[PATCH] D100486: [COST]Improve cost model for shuffles in SLP.

[Valeriy Dmitriev via Phabricator via llvm-commits]

vdmitrie added a comment.

Hi Alexey. Here is another crash reproducer:

; bin/opt -mcpu=corei7-avx -passes="print<cost-model>" -S test.ll

target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

define dso_local <12 x i64> @foo(<12 x i64> noundef %src) {
entry:

  %shuffle = shufflevector <12 x i64> %src, <12 x i64> poison, <12 x i32> <i32 0, i32 3, i32 6, i32 9, i32 1, i32 4, i32 7, i32 10, i32 2, i32 5, i32 8, i32 11>
  ret <12 x i64> %shuffle

}


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D100486/new/

https://reviews.llvm.org/D100486