Add bit scan {forward,reverse} insns to x86 NCG

Authored by hvr on Aug 11 2014, 2:54 AM.

Description

Add bit scan {forward,reverse} insns to x86 NCG

This is a pre-requisite for implementing count-{leading,trailing}-zero
prim-ops (re Trac #9340)

Reviewers: ezyang, rwbarton, simonmar, austin

Subscribers: simonmar, relrod, ezyang, carter

Differential Revision: https://phabricator.haskell.org/D141

Details

Committed
hvrAug 12 2014, 8:57 AM
Pushed
bgamariAug 25 2016, 1:39 PM
Differential Revision
D141: Add bit scan {forward,reverse} & CMOVcc insns to x86 NCG
Parents
rGHCDIFF3694d8771168: Re-add `--no-dph` option to ./validate
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