[all-commits] [llvm/llvm-project] 2b08f6: [AMDGPU] Improve register computation for indirect...

[Sebastian Neubauer via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2b08f6af62afbf32e89a6a392dbafa92c62f7bdf
      https://github.com/llvm/llvm-project/commit/2b08f6af62afbf32e89a6a392dbafa92c62f7bdf
  Author: Sebastian Neubauer <sebastian.neubauer at amd.com>
  Date:   2021-07-20 (Tue, 20 Jul 2021)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPU.h
    M llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.h
    A llvm/lib/Target/AMDGPU/AMDGPUResourceUsageAnalysis.cpp
    A llvm/lib/Target/AMDGPU/AMDGPUResourceUsageAnalysis.h
    M llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
    M llvm/lib/Target/AMDGPU/CMakeLists.txt
    M llvm/test/CodeGen/AMDGPU/agpr-register-count.ll
    M llvm/test/CodeGen/AMDGPU/amdpal-callable.ll
    M llvm/test/CodeGen/AMDGPU/call-graph-register-usage.ll
    M llvm/test/CodeGen/AMDGPU/indirect-call.ll
    M llvm/test/CodeGen/AMDGPU/llc-pipeline.ll

  Log Message:
  -----------
  [AMDGPU] Improve register computation for indirect calls

First, collect the register usage in each function, then apply the
maximum register usage of all functions to functions with indirect
calls.

This is more accurate than guessing the maximum register usage without
looking at the actual usage.

As before, assume that indirect calls will hit a function in the
current module.

Differential Revision: https://reviews.llvm.org/D105839