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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/106122] [12/13 Regression] ICE in fixup_args_size_notes, at expr.cc:4493 since r12-6106-gef26c151c14a8717 Date: Sun, 03 Jul 2022 13:02:26 +0000 [thread overview] Message-ID: <bug-106122-4-7WzQVDbKz8@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-106122-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106122 --- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-12 branch has been updated by Roger Sayle <sayle@gcc.gnu.org>: https://gcc.gnu.org/g:55899e33de74082521708a58fdc79510e0c5efad commit r12-8542-g55899e33de74082521708a58fdc79510e0c5efad Author: Roger Sayle <roger@nextmovesoftware.com> Date: Sun Jul 3 14:01:17 2022 +0100 PR target/106122: Don't update %esp via the stack with -Oz on x86. When optimizing for size with -Oz, setting a register can be minimized by pushing an immediate value to the stack and popping it to the destination. Alas the one general register that shouldn't be updated via the stack is the stack pointer itself, where "pop %esp" can't be represented in GCC's RTL ("use of a register mentioned in pre_inc, pre_dec, post_inc or post_dec is not permitted within the same instruction"). This patch fixes PR target/106122 by explicitly checking for SP_REG in the problematic peephole2. 2022-07-O3 Roger Sayle <roger@nextmovesoftware.com> gcc/ChangeLog PR target/106122 * config/i386/i386.md (peephole2): Avoid generating pop %esp when optimizing for size. gcc/testsuite/ChangeLog PR target/106122 * gcc.target/i386/pr106122.c: New test case.
next prev parent reply other threads:[~2022-07-03 13:02 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-06-28 17:06 [Bug c/106122] New: [12/13 Regression] ICE in fixup_args_size_notes, at expr.cc:4493 gscfq@t-online.de 2022-06-29 9:44 ` [Bug target/106122] " rguenth at gcc dot gnu.org 2022-06-29 12:05 ` [Bug target/106122] [12/13 Regression] ICE in fixup_args_size_notes, at expr.cc:4493 since r12-6106-gef26c151c14a8717 marxin at gcc dot gnu.org 2022-06-29 13:03 ` roger at nextmovesoftware dot com 2022-07-01 8:20 ` cvs-commit at gcc dot gnu.org 2022-07-03 13:02 ` cvs-commit at gcc dot gnu.org [this message] 2022-07-03 13:23 ` roger at nextmovesoftware dot com
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