Date: Fri, 24 Aug 2018 19:20:27 -0400 From: Rich Felker <dalias@...c.org> To: musl@...ts.openwall.com Subject: Re: [PATCH] fix build failure on arm because of missing clz instruction On Fri, Aug 24, 2018 at 02:58:04PM -0700, Andre McCurdy wrote: > On Fri, Aug 24, 2018 at 12:30 PM, Szabolcs Nagy <nsz@...t70.net> wrote: > > another arm patch, clz usage (in fma) was broken with -mthumb -march=armv5t. > > That conditional was originally written under the assumption that musl > doesn't support thumb1 (so -mthumb -march=armv5t is not a supported > configuration). > > Was that assumption wrong? musl does not support being pure-thumb1 code, because some of the asm source files are not thumb-compatible, but I think the C code can be compiled as thumb1. -mthumb is only passed to the assembler for asm source files if __thumb2__ is defined. Rich
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