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From: "vincent.riviere at freesbee dot fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/88160] Error: register save offset not a multiple of 4
 only with optimize
Date: Wed, 26 Jul 2023 23:50:18 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D88160

--- Comment #3 from Vincent Riviere <vincent.riviere at freesbee dot fr> ---
There are 2 lightweight workarounds for the OP testcase:
-fno-combine-stack-adjustments
-fno-omit-frame-pointer

$ m68k-elf-gcc -mshort -mcpu=3D5475 -g -O2 -c test.c
/tmp/ccW6hc6h.s: Assembler messages:
/tmp/ccW6hc6h.s:20: Error: register save offset not a multiple of 4
/tmp/ccW6hc6h.s:21: Error: register save offset not a multiple of 4
/tmp/ccW6hc6h.s:22: Error: register save offset not a multiple of 4

$ m68k-elf-gcc -mshort -mcpu=3D5475 -g -O2 -c test.c
-fno-combine-stack-adjustments
# OK

$ m68k-elf-gcc -mshort -mcpu=3D5475 -g -O2 -c test.c -fno-omit-frame-pointer
# OK=