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Bug 21023 – 64 bit BSWAP instruction not supported by code generator

Status: NEW
Severity: normal
Priority: P3
Component: dmd
Product: D
Version: D2
Platform: x86_64
OS: All
Creation time: 2020-07-07T10:12:38Z
Last change time: 2024-12-13T19:09:57Z
Keywords: performance
Assigned to: No Owner
Creator: Walter Bright

Moved to GitHub: dmd#19741 →

Comments

Comment #0 by bugzilla — 2020-07-07T10:12:38Z

References: BSWAP for 64 bits is emulated here: https://github.com/dlang/druntime/blob/master/src/core/bitop.d#L509 The instruction reference for it: https://www.felixcloutier.com/x86/bswap Performance problems evident here: https://github.com/dlang/phobos/pull/7534/files

Comment #1 by robert.schadek — 2024-12-13T19:09:57Z

THIS ISSUE HAS BEEN MOVED TO GITHUB https://github.com/dlang/dmd/issues/19741 DO NOT COMMENT HERE ANYMORE, NOBODY WILL SEE IT, THIS ISSUE HAS BEEN MOVED TO GITHUB