[all-commits] [llvm/llvm-project] c27e81: [AMDGPU][IndirectCalls] Fix register usage propaga...

[Madhur via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c27e8141b3d1265d2ab1cb951c4330b961fab9ee
      https://github.com/llvm/llvm-project/commit/c27e8141b3d1265d2ab1cb951c4330b961fab9ee
  Author: madhur13490 <Madhur.Amilkanthwar at amd.com>
  Date:   2021-06-12 (Sat, 12 Jun 2021)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.h
    M llvm/lib/Target/AMDGPU/AMDGPUSubtarget.cpp
    M llvm/lib/Target/AMDGPU/GCNSubtarget.h
    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

  Log Message:
  -----------
  [AMDGPU][IndirectCalls] Fix register usage propagation for indirect/external calls

This patch computes max SGPRs and VGPRs used by module
in presence of indirect calls and makes that
as register requirement for functions/kernels
which makes indirect calls.

This patch also refactors code AMDGPUSubTarget.cpp
which add a "base" variants of getMaxNumSGPRs which
is used by MachineFunction and new Function version.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D103636