[libc-commits] [PATCH] D157980: [libc] Drop RPC port count and index to 32-bit numbers

[Joseph Huber via Phabricator via libc-commits]

jhuber6 created this revision.
jhuber6 added reviewers: JonChesterfield, jdoerfert, tianshilei1992, sivachandra.
Herald added subscribers: libc-commits, arphaman.
Herald added projects: libc-project, All.
jhuber6 requested review of this revision.

The port count and index into the ports was originally written as a
64-bit number. This was with an abundance of caution, however it's
highly unlikely that any configuration will excede a 32-bit number as
most machines  will require something in the low-thousands. Because GPUs
are functionally 32-bit in many of their operations this costs us some
extra time and registers to do the 64-bit operations. Doing this saves
us about four registers in most tests.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D157980

Files:
  libc/src/__support/RPC/rpc.h

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