[all-commits] [llvm/llvm-project] 2582d1: [ADT] Always use 32-bit size type for SmallVector ...

[Jay Foad via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2582d11f1a8a5783828156d3ced354727f422885
      https://github.com/llvm/llvm-project/commit/2582d11f1a8a5783828156d3ced354727f422885
  Author: Jay Foad <jay.foad at amd.com>
  Date:   2024-06-26 (Wed, 26 Jun 2024)

  Changed paths:
    M llvm/include/llvm/ADT/SmallVector.h
    M llvm/lib/Support/SmallVector.cpp

  Log Message:
  -----------
  [ADT] Always use 32-bit size type for SmallVector with 16-bit elements (#95536)

`SmallVector` has a special case to allow vector of char to exceed 4 GB
in
size on 64-bit hosts. Apply this special case only for 8-bit element
types, instead of all element types < 32 bits.

This makes `SmallVector<MCPhysReg>` more compact because `MCPhysReg` is
`uint16_t`.

---------

Co-authored-by: Nikita Popov <github at npopov.com>



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