llvm-project

464035fc - Revert "[AMDGPU] SIFixSgprCopies should not process twice VGPR to SGPR copies inserted by PHI preprocessing. (#134153)"

Revert "[AMDGPU] SIFixSgprCopies should not process twice VGPR to SGPR copies inserted by PHI preprocessing. (#134153)" This reverts commit 0563569978fee1e780a560494c89869074933f58. Breaks tests, see comments on https://github.com/llvm/llvm-project/pull/134153