public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug other/113927] [avr-tiny] Sets up a stack-frame even for trivial code Date: Thu, 15 Feb 2024 13:49:06 +0000 [thread overview] Message-ID: <bug-113927-4-rYyJXKbDZ6@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-113927-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113927 --- Comment #2 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-13 branch has been updated by Georg-Johann Lay <gjl@gcc.gnu.org>: https://gcc.gnu.org/g:0f0ca42fb5556f2c6b76b017fbbd90820a728ce0 commit r13-8327-g0f0ca42fb5556f2c6b76b017fbbd90820a728ce0 Author: Georg-Johann Lay <avr@gjlay.de> Date: Thu Feb 15 13:53:34 2024 +0100 AVR: target 113927 - Simple code triggers stack frame for Reduced Tiny. The -mmcu=avrtiny cores have no ADIW and SBIW instructions. This was implemented by clearing all regs out of regclass ADDW_REGS so that constraint "w" never matched. This corrupted the subset relations of the register classes as they appear in enum reg_class. This patch keeps ADDW_REGS like for all other cores, i.e. it contains R24...R31. Instead of tests like test_hard_reg_class (ADDW_REGS, *) the code now uses avr_adiw_reg_p (*). And all insns with constraint "w" get "isa" insn attribute value of "adiw". Plus, a new built-in macro __AVR_HAVE_ADIW__ is provided, which is more specific than __AVR_TINY__. gcc/ PR target/113927 * config/avr/avr.h (AVR_HAVE_ADIW): New macro. * config/avr/avr-protos.h (avr_adiw_reg_p): New proto. * config/avr/avr.cc (avr_adiw_reg_p): New function. (avr_conditional_register_usage) [AVR_TINY]: Don't clear ADDW_REGS. Replace test_hard_reg_class (ADDW_REGS, ...) with calls to * config/avr/avr.md: Same. (attr "isa") <tiny, no_tiny>: Remove. <adiw, no_adiw>: Add. (define_insn, define_insn_and_split): When an alternative has constraint "w", then set attribute "isa" to "adiw". * config/avr/avr-c.cc (avr_cpu_cpp_builtins) [AVR_HAVE_ADIW]: Built-in define __AVR_HAVE_ADIW__. * doc/invoke.texi (AVR Options): Document it. (cherry picked from commit 5cff288c2dae4ea709df067cf398f23e214b2e80)
next prev parent reply other threads:[~2024-02-15 13:49 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-02-15 9:43 [Bug other/113927] New: " gjl at gcc dot gnu.org 2024-02-15 12:47 ` [Bug other/113927] " pinskia at gcc dot gnu.org 2024-02-15 13:09 ` cvs-commit at gcc dot gnu.org 2024-02-15 13:49 ` cvs-commit at gcc dot gnu.org [this message] 2024-02-15 13:50 ` [Bug target/113927] " gjl at gcc dot gnu.org
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=bug-113927-4-rYyJXKbDZ6@http.gcc.gnu.org/bugzilla/ \ --to=gcc-bugzilla@gcc.gnu.org \ --cc=gcc-bugs@gcc.gnu.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).