[all-commits] [llvm/llvm-project] cadf65: [AArch64][SME] Split SMECallAttrs out of SMEAttrs ...

[Benjamin Maxwell via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: cadf652857cf996cc591e7a4afd0bc2e62781b16
      https://github.com/llvm/llvm-project/commit/cadf652857cf996cc591e7a4afd0bc2e62781b16
  Author: Benjamin Maxwell <benjamin.maxwell at arm.com>
  Date:   2025-05-06 (Tue, 06 May 2025)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
    M llvm/lib/Target/AArch64/Utils/AArch64SMEAttributes.cpp
    M llvm/lib/Target/AArch64/Utils/AArch64SMEAttributes.h
    M llvm/test/CodeGen/AArch64/sme-peephole-opts.ll
    M llvm/test/CodeGen/AArch64/sme-vg-to-stack.ll
    M llvm/test/CodeGen/AArch64/sme-zt0-state.ll
    M llvm/unittests/Target/AArch64/SMEAttributesTest.cpp

  Log Message:
  -----------
  [AArch64][SME] Split SMECallAttrs out of SMEAttrs (#137239)

SMECallAttrs is a new helper class that holds all the SMEAttrs for a
call. The interfaces to query actions needed for the call (e.g. change
streaming mode) have been moved to the SMECallAttrs class.

The main motivation for this change is to make the split between the
caller, callee, and callsite attributes more apparent.

Before this change, we would always merge callsite and callee
attributes. The main reason to do this was to handle indirect calls,
however, we also occasionally used callsite attributes on direct calls
in tests (mainly to avoid creating multiple function declarations). With
this patch, we now explicitly handle indirect calls and disallow
incompatible attributes on direct calls (so this patch is not entirely
an NFC).



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