[all-commits] [llvm/llvm-project] e9a362: [CodeGen] Preserved additional analyses in StackSl...

[Vikash Gupta via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e9a362362e03c6aea7a64473e8b8bb9140fd3855
      https://github.com/llvm/llvm-project/commit/e9a362362e03c6aea7a64473e8b8bb9140fd3855
  Author: Vikash Gupta <35700483+vg0204 at users.noreply.github.com>
  Date:   2024-06-11 (Tue, 11 Jun 2024)

  Changed paths:
    M llvm/lib/CodeGen/StackSlotColoring.cpp

  Log Message:
  -----------
  [CodeGen] Preserved additional analyses in StackSlotColoring pass. (#93779)

The pass pipeline of some architecture splits register allocation phase
based on different register classes. As some analyses need to be
computed at the beginning of the register allocation and kept alive till
all values are assigned to some physical registers.

This poses challenge with objective of introducing StackSlotColoring
after partial virtual registers are assigned to physical registers, in
order to optimize stack slots usage.As this pass doesn't preserve few
analysis yet to be needed by the register allocation of the remaining
virtual registers, necessiating them to be kept preserved.



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