[all-commits] [llvm/llvm-project] cd46c2: Tweak BumpPtrAllocator to benefit the hot path (#9...

[Owen Anderson via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: cd46c2c1ba0481e2194231f0f2c2ceeb0810bb79
      https://github.com/llvm/llvm-project/commit/cd46c2c1ba0481e2194231f0f2c2ceeb0810bb79
  Author: Owen Anderson <resistor at mac.com>
  Date:   2024-05-01 (Wed, 01 May 2024)

  Changed paths:
    M llvm/include/llvm/Support/Allocator.h

  Log Message:
  -----------
  Tweak BumpPtrAllocator to benefit the hot path (#90571)

This takes the form of three consecutive but related changes:
- Mark the fast path of BumpPtrAllocator as likely-taken.
- Move the slow path of BumpPtrAllocator to a separate function.
- Mark the slow path of BumpPtrAllocator as noinline.

Overall, this saves geomean 0.4% userspace instructions on CTMark -O3,
and 0.98% on CTMark -O0 -g.


http://llvm-compile-time-tracker.com/compare.php?from=e1622e189e8c0ef457bfac528f90a7a930d9aad2&to=9eb53a4ed3af4a55e769ae1dd22d034b63d046e3&stat=instructions%3Au



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications