[Bug 3394] New: Problems detecting -fzero-call-used-regs=all on some architectures
bugzilla-daemon at mindrot.org
bugzilla-daemon at mindrot.org
Fri Feb 25 03:00:39 AEDT 2022
https://bugzilla.mindrot.org/show_bug.cgi?id=3394
Bug ID: 3394
Summary: Problems detecting -fzero-call-used-regs=all on some
architectures
Product: Portable OpenSSH
Version: -current
Hardware: Other
OS: Linux
Status: NEW
Severity: normal
Priority: P5
Component: Build system
Assignee: unassigned-bugs at mindrot.org
Reporter: cjwatson at debian.org
The autoconf test for whether -fzero-call-used-regs=all is supported
isn't sufficient on some architectures. I saw two types of errors on
various Debian architectures. An example of one is ppc64el:
../../ssherr.c: In function ‘ssh_err’:
../../ssherr.c:151:1: sorry, unimplemented: ‘-fzero-call-used-regs’ not
supported on this target
151 | }
| ^
And an example of the other is mips64el, which is noisier but it
amounts to much the same thing:
../../ssherr.c: In function ‘ssh_err’:
../../ssherr.c:151:1: internal compiler error: in int_mode_for_mode, at
stor-layout.c:407
151 | }
| ^
0x120fecf7f internal_error(char const*, ...)
???:0
0x120139257 fancy_abort(char const*, int, char const*)
???:0
0x1207e62d3 int_mode_for_mode(machine_mode)
???:0
0x120417727 emit_move_insn_1(rtx_def*, rtx_def*)
???:0
0x120413277 emit_move_insn(rtx_def*, rtx_def*)
???:0
0x120802cb3 default_zero_call_used_regs(HARD_REG_SET)
???:0
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <file:///usr/share/doc/gcc-11/README.Bugs> for instructions.
during RTL pass: zero_call_used_regs
I'm testing a patch for this at the moment.
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