[all-commits] [llvm/llvm-project] c5da2d: [MLIR][LLVM] Support inlining of LLVM::AllocaOp.

[definelicht via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c5da2dca2c3453d12419596a1dfe349761f771fc
      https://github.com/llvm/llvm-project/commit/c5da2dca2c3453d12419596a1dfe349761f771fc
  Author: Johannes de Fine Licht <johannes.definelicht at nextsilicon.com>
  Date:   2023-01-26 (Thu, 26 Jan 2023)

  Changed paths:
    M mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
    M mlir/test/Dialect/LLVMIR/inlining.mlir

  Log Message:
  -----------
  [MLIR][LLVM] Support inlining of LLVM::AllocaOp.

If inlining into an LLVM function, move allocas of constant size from
the callee's entry block to the new entry block, as this will fold into
the prologue/epilogue code during code generation.

We still allow inlining allocas even if we cannot do this
post-processing (i.e., when we are not inlining into an `LLVM::FuncOp`),
since this is an optimization (and thus not necessary for correctness).

Depends on D141682

Reviewed By: gysit

Differential Revision: https://reviews.llvm.org/D142436