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From: "peter.bumbulis at ianywhere dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/63678] __mm256_blend_epi16 only accepts 8-bit masks (should accept 16-bit) Date: Wed, 29 Oct 2014 18:22:00 -0000 [thread overview] Message-ID: <bug-63678-4-aGSpwJGO2C@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-63678-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63678 --- Comment #2 from Peter Bumbulis <peter.bumbulis at ianywhere dot com> --- The referenced web page is incorrect. Look in the instruction set reference manual (https://software.intel.com/sites/default/files/managed/c6/a9/319433-020.pdf, search for VPBLENDMW) or the intrinsics guide (https://software.intel.com/sites/landingpage/IntrinsicsGuide/). These instructions blend 16 bit quantities: you can fit 16 of these in a 256 bit register. For AVX512 it's a 32-bit constant.
next prev parent reply other threads:[~2014-10-29 18:21 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-10-29 15:18 [Bug c/63678] New: " peter.bumbulis at ianywhere dot com 2014-10-29 18:01 ` [Bug c/63678] " jakub at gcc dot gnu.org 2014-10-29 18:22 ` peter.bumbulis at ianywhere dot com [this message] 2014-10-29 18:34 ` [Bug target/63678] " jakub at gcc dot gnu.org 2014-10-29 18:37 ` peter.bumbulis at ianywhere dot com 2014-10-29 18:38 ` jakub at gcc dot gnu.org 2014-10-29 19:19 ` jakub at gcc dot gnu.org
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