https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125351
Bug ID: 125351
Summary: [17 Regression] Assembler messages: Error: no such
instruction: `ptwritel eax' with -mptwrite -masm=intel
Product: gcc
Version: 17.0
Status: UNCONFIRMED
Keywords: assemble-failure
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 64477
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=64477&action=edit
reduced testcase
Might be caused by the PR124316 fix.
Output:
$ x86_64-pc-linux-gnu-gcc -mptwrite -masm=intel xxx.c
/tmp/ccGl089Z.s: Assembler messages:
/tmp/ccGl089Z.s:15: Error: no such instruction: `ptwritel eax'
$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-20260515204118-gf108e23d2bf-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/17.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--disable-bootstrap --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=x86_64-pc-linux-gnu --with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --enable-libsanitizer
--disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-20260515204118-gf108e23d2bf-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 17.0.0 20260515 (experimental) (GCC)
