[all-commits] [llvm/llvm-project] 974216: [LoongArch] Support load/store of dso_local PIC gl...

[Fangrui Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9742166935f48d0e84f5b721819208fbc0afae3a
      https://github.com/llvm/llvm-project/commit/9742166935f48d0e84f5b721819208fbc0afae3a
  Author: Fangrui Song <i at maskray.me>
  Date:   2022-07-21 (Thu, 21 Jul 2022)

  Changed paths:
    M llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
    M llvm/test/CodeGen/LoongArch/ir-instruction/load-store.ll

  Log Message:
  -----------
  [LoongArch] Support load/store of dso_local PIC global values

lowerGlobalAddress added by D128427 can be used for PIC. The actual condition is
that the global value needs to be dso_local (a dso_preemptable one needs GOT
indirection).

load-store.ll has UB due to out-of-bounds load/store. Fix the UB in the variable
test and add an array test. Note: NOPIC array index is currently wrong.

Reviewed By: wangleiat

Differential Revision: https://reviews.llvm.org/D129977