Re: [GHC] #9340: Implement new `clz` inline primop

#9340: Implement new `clz` inline primop -------------------------------------+------------------------------------- Reporter: hvr | Owner: hvr Type: feature | Status: patch request | Milestone: 7.10.1 Priority: normal | Version: 7.8.2 Component: Compiler | Keywords: primop clz (CodeGen) | Architecture: Unknown/Multiple Resolution: | Difficulty: Unknown Operating System: | Blocked By: Unknown/Multiple | Related Tickets: Type of failure: | None/Unknown | Test Case: | Blocking: | Differential Revisions: Phab:D144 | -------------------------------------+------------------------------------- Comment (by Herbert Valerio Riedel ): In [changeset:"9f285fa40f6fb0c8495dbec771d798ac6dfaabee/ghc"]: {{{ #!CommitTicketReference repository="ghc" revision="9f285fa40f6fb0c8495dbec771d798ac6dfaabee" Add CMOVcc insns to x86 NCG This is a pre-requisite for implementing count-{leading,trailing}-zero prim-ops (re #9340) and may be useful to NCG to help turn some code into branch-less code sequences. Test Plan: Compiles and validates in combination with clz/ctz primop impl Reviewers: ezyang, rwbarton, simonmar, austin Subscribers: simonmar, relrod, ezyang, carter Differential Revision: https://phabricator.haskell.org/D141 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9340#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler