[all-commits] [llvm/llvm-project] 85e4ee: [SystemZ] Avoid type legalization on structs

[Josh Stone via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 85e4ee15d32ae0344755d11d4ca90a15a6e005cd
      https://github.com/llvm/llvm-project/commit/85e4ee15d32ae0344755d11d4ca90a15a6e005cd
  Author: Josh Stone <jistone at redhat.com>
  Date:   2023-08-07 (Mon, 07 Aug 2023)

  Changed paths:
    M llvm/lib/Target/SystemZ/SystemZTargetTransformInfo.cpp
    A llvm/test/Analysis/CostModel/SystemZ/struct-cost-crash.ll

  Log Message:
  -----------
  [SystemZ] Avoid type legalization on structs

In SystemZTTIImpl::getMemoryOpCost, the call to getNumberOfParts will
run type legalization, which can't handle structs. So before that, we
check for an unknown value type and forward to BaseT, just like many
other targets do in this situation.

https://bugzilla.redhat.com/show_bug.cgi?id=2224885

Reviewed By: uweigand

Differential Revision: https://reviews.llvm.org/D156379