[all-commits] [llvm/llvm-project] 8b11de: [AMDGPU][SDAG] Initial support for ISD::PTRADD (#1...

[Fabian Ritter via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8b11de70681355d7e7a4f8f3da85afa31fa7fc74
      https://github.com/llvm/llvm-project/commit/8b11de70681355d7e7a4f8f3da85afa31fa7fc74
  Author: Fabian Ritter <fabian.ritter at amd.com>
  Date:   2025-06-13 (Fri, 13 Jun 2025)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIISelLowering.cpp
    M llvm/lib/Target/AMDGPU/SIISelLowering.h
    M llvm/lib/Target/AMDGPU/SIInstructions.td
    A llvm/test/CodeGen/AMDGPU/ptradd-sdag.ll

  Log Message:
  -----------
  [AMDGPU][SDAG] Initial support for ISD::PTRADD (#141725)

Enable generation of PTRADD SelectionDAG nodes for pointer arithmetic for SI,
for now behind an internal CLI option. Also add basic patterns to match these
nodes. Optimizations will come in follow-up PRs. Basic tests for SDAG codegen
with PTRADD are in test/CodeGen/AMDGPU/ptradd-sdag.ll

Only affects 64-bit address spaces for now, since the immediate use case only
affects the flat address space.

For SWDEV-516125.



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