[PATCH] D72770: Add matrix types extension tests .

[Puyan Lotfi via Phabricator via llvm-commits]

plotfi added a comment.

Hi

@fhahn I ran into an llvm_unreachable when building matrix-types-spec.cpp as part of an llvm-test-suite build using -Oz with -flto=thin. I reduced the IR that hit the unreachable to:

  target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
  target triple = "aarch64-unknown-linux-gnu"
  
  define void @f(double* %Res) {
    tail call void @llvm.matrix.column.major.store.v275f64(<275 x double> undef, double* align 8 %Res, i64 25, i1 false, i32 25, i32 11)
    ret void
  }
  
  declare void @llvm.matrix.column.major.store.v275f64(<275 x double>, double* nocapture writeonly, i64, i1 immarg, i32 immarg, i32 immarg)

Repros through llc. Also repro'ed it on godbolt too: https://godbolt.org/z/rrGecn
The unreachable is in llvm::DAGTypeLegalizer::WidenVectorOperand.

Hope this is helpful.

-PL


Repository:
  rT test-suite

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D72770/new/

https://reviews.llvm.org/D72770