[PATCH] D75329: [MLIR] Added llvm.freeze

[Sagar Jain via Phabricator via llvm-commits]

Sagar created this revision.
Herald added subscribers: llvm-commits, Joonsoo, liufengdb, aartbik, lucyrfox, mgester, arpith-jacob, nicolasvasilache, antiagainst, shauheen, burmako, jpienaar, rriddle, mehdi_amini.
Herald added a project: LLVM.

This patch adds llvm.freeze & processes undef constants from LLVM IR.

syntax:
LLVM IR
`<result> = freeze ty <val>`

MLIR LLVM Dialect
`llvm.freeze val attr-dict : type`

Example:
LLVM IR: `%3 = freeze i32 5`
MLIR: `%6 = llvm.freeze %5 : !llvm.i32`


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D75329

Files:
  mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
  mlir/lib/Target/LLVMIR/ConvertFromLLVMIR.cpp
  mlir/test/Dialect/LLVMIR/roundtrip.mlir
  mlir/test/Target/import.ll
  mlir/test/Target/llvmir.mlir

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