* [Bug rtl-optimization/110307] ICE in move_insn, at haifa-sched.cc:5473 on alpha with -fPIC -fpeephole2 -fschedule-insns2
2023-06-19 7:08 [Bug rtl-optimization/110307] New: ICE in move_insn, at haifa-sched.cc:5473 on alpha with -fPIC -fpeephole2 -fschedule-insns2 matoro_gcc_bugzilla at matoro dot tk
@ 2023-06-19 11:13 ` amonakov at gcc dot gnu.org
2023-06-19 20:28 ` [Bug rtl-optimization/110307] ICE in move_insn, at haifa-sched.cc:5473 when building Ruby on alpha with -fPIC -O2 (or -fpeephole2 -fschedule-insns2) matoro_gcc_bugzilla at matoro dot tk
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From: amonakov at gcc dot gnu.org @ 2023-06-19 11:13 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110307
Alexander Monakov <amonakov at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |amonakov at gcc dot gnu.org
--- Comment #1 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
I tried building a cross-compiler from trunk with
--target=alpha-unknown-linux-gnu --with-gnu-ld --with-gnu-as --enable-secureplt
--enable-languages=c --enable-tls and got
t.c:8:1: error: unrecognizable insn:
8 | }
| ^
(insn 23 22 24 5 (set (reg/f:DI 74)
(symbol_ref:DI ("ruby_current_ec") [flags 0x10] <var_decl
0x7fb457a6c090 ruby_current_ec>)) "t.c":6:22 -1
(nil))
during RTL pass: vregs
Would you mind compiling the testcase with -fdump-tree-all -fdump-rtl-all and
attaching a tar.gz with the resulting dumps?
^ permalink raw reply [flat|nested] 16+ messages in thread* [Bug rtl-optimization/110307] ICE in move_insn, at haifa-sched.cc:5473 when building Ruby on alpha with -fPIC -O2 (or -fpeephole2 -fschedule-insns2)
2023-06-19 7:08 [Bug rtl-optimization/110307] New: ICE in move_insn, at haifa-sched.cc:5473 on alpha with -fPIC -fpeephole2 -fschedule-insns2 matoro_gcc_bugzilla at matoro dot tk
2023-06-19 11:13 ` [Bug rtl-optimization/110307] " amonakov at gcc dot gnu.org
@ 2023-06-19 20:28 ` matoro_gcc_bugzilla at matoro dot tk
2023-06-19 22:07 ` amonakov at gcc dot gnu.org
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From: matoro_gcc_bugzilla at matoro dot tk @ 2023-06-19 20:28 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110307
--- Comment #2 from matoro <matoro_gcc_bugzilla at matoro dot tk> ---
Created attachment 55365
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55365&action=edit
archive from -fdump-tree-all -fdump-rtl-all
(In reply to Alexander Monakov from comment #1)
> I tried building a cross-compiler from trunk with
> --target=alpha-unknown-linux-gnu --with-gnu-ld --with-gnu-as
> --enable-secureplt --enable-languages=c --enable-tls and got
>
> t.c:8:1: error: unrecognizable insn:
> 8 | }
> | ^
> (insn 23 22 24 5 (set (reg/f:DI 74)
> (symbol_ref:DI ("ruby_current_ec") [flags 0x10] <var_decl
> 0x7fb457a6c090 ruby_current_ec>)) "t.c":6:22 -1
> (nil))
> during RTL pass: vregs
>
> Would you mind compiling the testcase with -fdump-tree-all -fdump-rtl-all
> and attaching a tar.gz with the resulting dumps?
Absolutely, here you go.
^ permalink raw reply [flat|nested] 16+ messages in thread* [Bug rtl-optimization/110307] ICE in move_insn, at haifa-sched.cc:5473 when building Ruby on alpha with -fPIC -O2 (or -fpeephole2 -fschedule-insns2)
2023-06-19 7:08 [Bug rtl-optimization/110307] New: ICE in move_insn, at haifa-sched.cc:5473 on alpha with -fPIC -fpeephole2 -fschedule-insns2 matoro_gcc_bugzilla at matoro dot tk
2023-06-19 11:13 ` [Bug rtl-optimization/110307] " amonakov at gcc dot gnu.org
2023-06-19 20:28 ` [Bug rtl-optimization/110307] ICE in move_insn, at haifa-sched.cc:5473 when building Ruby on alpha with -fPIC -O2 (or -fpeephole2 -fschedule-insns2) matoro_gcc_bugzilla at matoro dot tk
@ 2023-06-19 22:07 ` amonakov at gcc dot gnu.org
2023-06-19 23:02 ` matoro_gcc_bugzilla at matoro dot tk
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From: amonakov at gcc dot gnu.org @ 2023-06-19 22:07 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110307
--- Comment #3 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Do you have older versions of GCC to check on this testcase?
^ permalink raw reply [flat|nested] 16+ messages in thread* [Bug rtl-optimization/110307] ICE in move_insn, at haifa-sched.cc:5473 when building Ruby on alpha with -fPIC -O2 (or -fpeephole2 -fschedule-insns2)
2023-06-19 7:08 [Bug rtl-optimization/110307] New: ICE in move_insn, at haifa-sched.cc:5473 on alpha with -fPIC -fpeephole2 -fschedule-insns2 matoro_gcc_bugzilla at matoro dot tk
` (2 preceding siblings ...)
2023-06-19 22:07 ` amonakov at gcc dot gnu.org
@ 2023-06-19 23:02 ` matoro_gcc_bugzilla at matoro dot tk
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From: matoro_gcc_bugzilla at matoro dot tk @ 2023-06-19 23:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110307
--- Comment #4 from matoro <matoro_gcc_bugzilla at matoro dot tk> ---
(In reply to Alexander Monakov from comment #3)
> Do you have older versions of GCC to check on this testcase?
No, for the same reason I didn't get a complete backtrace, it takes a while to
compile on this machine. I can go ahead and kick it off though, and update
with results as I find them.
^ permalink raw reply [flat|nested] 16+ messages in thread* [Bug rtl-optimization/110307] ICE in move_insn, at haifa-sched.cc:5473 when building Ruby on alpha with -fPIC -O2 (or -fpeephole2 -fschedule-insns2)
2023-06-19 7:08 [Bug rtl-optimization/110307] New: ICE in move_insn, at haifa-sched.cc:5473 on alpha with -fPIC -fpeephole2 -fschedule-insns2 matoro_gcc_bugzilla at matoro dot tk
` (3 preceding siblings ...)
2023-06-19 23:02 ` matoro_gcc_bugzilla at matoro dot tk
@ 2023-06-20 9:03 ` amonakov at gcc dot gnu.org
2023-06-20 16:42 ` amonakov at gcc dot gnu.org
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From: amonakov at gcc dot gnu.org @ 2023-06-20 9:03 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110307
--- Comment #5 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
It's not necessary yet for this particular bug, but might be helpful for future
bugs (if disk space is not an issue).
^ permalink raw reply [flat|nested] 16+ messages in thread* [Bug rtl-optimization/110307] ICE in move_insn, at haifa-sched.cc:5473 when building Ruby on alpha with -fPIC -O2 (or -fpeephole2 -fschedule-insns2)
2023-06-19 7:08 [Bug rtl-optimization/110307] New: ICE in move_insn, at haifa-sched.cc:5473 on alpha with -fPIC -fpeephole2 -fschedule-insns2 matoro_gcc_bugzilla at matoro dot tk
` (4 preceding siblings ...)
2023-06-20 9:03 ` amonakov at gcc dot gnu.org
@ 2023-06-20 16:42 ` amonakov at gcc dot gnu.org
2023-06-20 21:45 ` pinskia at gcc dot gnu.org
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From: amonakov at gcc dot gnu.org @ 2023-06-20 16:42 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110307
--- Comment #6 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Cross-compiler needs HAVE_AS_EXPLICIT_RELOCS=1.
With checking enabled, we get:
t.c:8:1: error: flow control insn inside a basic block
(call_insn 97 96 98 4 (parallel [
(set (reg:DI 0 $0)
(call (mem:DI (reg:DI 27 $27) [0 S8 A64])
(const_int 0 [0])))
(set (reg:DI 29 $29)
(unspec:DI [
(reg:DI 29 $29)
(const_int 6 [0x6])
] UNSPEC_LDGP1))
(use (symbol_ref:DI ("__tls_get_addr") [flags 0x41] <function_decl
0x7f642d9ec400 __tls_get_addr>))
(use (unspec [
(const_int 1 [0x1])
] UNSPEC_TLSGD_CALL))
(clobber (reg:DI 26 $26))
]) "t.c":6:22 -1
(nil)
(expr_list (use (reg:DI 16 $16))
(nil)))
during RTL pass: peephole2
dump file: t.c.313r.peephole2
t.c:8:1: internal compiler error: in rtl_verify_bb_insns, at cfgrtl.cc:2797
Insn 96 appears via:
Splitting with gen_peephole2_8 (alpha.md:5972)
scanning new insn with uid = 96.
scanning new insn with uid = 97.
scanning new insn with uid = 98.
deleting insn with uid = 25.
Insn 25 was:
(call_insn/u 25 39 26 4 (parallel [
(set (reg:DI 0 $0)
(call (mem:DI (symbol_ref:DI ("__tls_get_addr") [flags 0x41]
<function_decl 0x7f642d9ec400 __tls_get_addr>) [0 S8 A64])
(const_int 0 [0])))
(unspec [
(const_int 1 [0x1])
] UNSPEC_TLSGD_CALL)
(use (reg:DI 29 $29))
(clobber (reg:DI 26 $26))
]) "t.c":6:22 346 {call_value_osf_tlsgd}
(expr_list:REG_DEAD (reg:DI 16 $16)
(expr_list:REG_EH_REGION (const_int -2147483648 [0xffffffff80000000])
(nil)))
(expr_list (use (reg:DI 16 $16))
(nil)))
Note the REG_EH_REGION. This is relevant because can_nonlocal_goto checks it,
so for insn 25 we knew it wouldn't return to the setjmp receiver. Applying the
peephole dropped the note.
^ permalink raw reply [flat|nested] 16+ messages in thread* [Bug rtl-optimization/110307] ICE in move_insn, at haifa-sched.cc:5473 when building Ruby on alpha with -fPIC -O2 (or -fpeephole2 -fschedule-insns2)
2023-06-19 7:08 [Bug rtl-optimization/110307] New: ICE in move_insn, at haifa-sched.cc:5473 on alpha with -fPIC -fpeephole2 -fschedule-insns2 matoro_gcc_bugzilla at matoro dot tk
` (5 preceding siblings ...)
2023-06-20 16:42 ` amonakov at gcc dot gnu.org
@ 2023-06-20 21:45 ` pinskia at gcc dot gnu.org
2023-06-21 11:08 ` amonakov at gcc dot gnu.org
` (7 subsequent siblings)
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From: pinskia at gcc dot gnu.org @ 2023-06-20 21:45 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110307
--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Alexander Monakov from comment #6)
> Note the REG_EH_REGION. This is relevant because can_nonlocal_goto checks
> it, so for insn 25 we knew it wouldn't return to the setjmp receiver.
> Applying the peephole dropped the note.
This should fix it but there might be other REG notes that need to be copied
still:
apinski@xeond:~/src/upstream-gcc/gcc/gcc$ git diff recog.cc
diff --git a/gcc/recog.cc b/gcc/recog.cc
index 37432087812..4bad4a59057 100644
--- a/gcc/recog.cc
+++ b/gcc/recog.cc
@@ -3921,6 +3921,7 @@ peep2_attempt (basic_block bb, rtx_insn *insn, int
match_len, rtx_insn *attempt)
{
case REG_NORETURN:
case REG_SETJMP:
+ case REG_EH_REGION:
case REG_TM:
case REG_CALL_NOCF_CHECK:
add_reg_note (new_insn, REG_NOTE_KIND (note),
^ permalink raw reply [flat|nested] 16+ messages in thread* [Bug rtl-optimization/110307] ICE in move_insn, at haifa-sched.cc:5473 when building Ruby on alpha with -fPIC -O2 (or -fpeephole2 -fschedule-insns2)
2023-06-19 7:08 [Bug rtl-optimization/110307] New: ICE in move_insn, at haifa-sched.cc:5473 on alpha with -fPIC -fpeephole2 -fschedule-insns2 matoro_gcc_bugzilla at matoro dot tk
` (6 preceding siblings ...)
2023-06-20 21:45 ` pinskia at gcc dot gnu.org
@ 2023-06-21 11:08 ` amonakov at gcc dot gnu.org
2023-06-22 14:53 ` matoro_gcc_bugzilla at matoro dot tk
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From: amonakov at gcc dot gnu.org @ 2023-06-21 11:08 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110307
--- Comment #8 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
REG_EH_REGION is handled further down that function, but
copy_reg_eh_region_note_backward does not copy the note. Perhaps it needs
diff --git a/gcc/except.cc b/gcc/except.cc
index e728aa43b6..cfe140c4d0 100644
--- a/gcc/except.cc
+++ b/gcc/except.cc
@@ -1795,7 +1795,7 @@ copy_reg_eh_region_note_backward (rtx note_or_insn,
rtx_insn *last, rtx first)
note = XEXP (note, 0);
for (insn = last; insn != first; insn = PREV_INSN (insn))
- if (insn_could_throw_p (insn))
+ if (insn_could_throw_p (insn) || can_nonlocal_goto (insn))
add_reg_note (insn, REG_EH_REGION, note);
}
?
^ permalink raw reply [flat|nested] 16+ messages in thread* [Bug rtl-optimization/110307] ICE in move_insn, at haifa-sched.cc:5473 when building Ruby on alpha with -fPIC -O2 (or -fpeephole2 -fschedule-insns2)
2023-06-19 7:08 [Bug rtl-optimization/110307] New: ICE in move_insn, at haifa-sched.cc:5473 on alpha with -fPIC -fpeephole2 -fschedule-insns2 matoro_gcc_bugzilla at matoro dot tk
` (7 preceding siblings ...)
2023-06-21 11:08 ` amonakov at gcc dot gnu.org
@ 2023-06-22 14:53 ` matoro_gcc_bugzilla at matoro dot tk
2023-06-22 15:55 ` amonakov at gcc dot gnu.org
` (5 subsequent siblings)
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From: matoro_gcc_bugzilla at matoro dot tk @ 2023-06-22 14:53 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110307
matoro <matoro_gcc_bugzilla at matoro dot tk> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |12.3.1, 13.1.1
--- Comment #9 from matoro <matoro_gcc_bugzilla at matoro dot tk> ---
I have a gcc 12 build, this does repro there as well. Assertions enabled on
this one so I see the same instruction dump now. It takes about 2 days, so I
will go ahead and kick off a build of 13 with those two patches mentioned
above. Any other changes I should include in the build?
^ permalink raw reply [flat|nested] 16+ messages in thread* [Bug rtl-optimization/110307] ICE in move_insn, at haifa-sched.cc:5473 when building Ruby on alpha with -fPIC -O2 (or -fpeephole2 -fschedule-insns2)
2023-06-19 7:08 [Bug rtl-optimization/110307] New: ICE in move_insn, at haifa-sched.cc:5473 on alpha with -fPIC -fpeephole2 -fschedule-insns2 matoro_gcc_bugzilla at matoro dot tk
` (8 preceding siblings ...)
2023-06-22 14:53 ` matoro_gcc_bugzilla at matoro dot tk
@ 2023-06-22 15:55 ` amonakov at gcc dot gnu.org
2023-06-22 16:17 ` matoro_gcc_bugzilla at matoro dot tk
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From: amonakov at gcc dot gnu.org @ 2023-06-22 15:55 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110307
--- Comment #10 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
I think the first patch may result in duplicated notes, so I wouldn't recommend
picking it.
^ permalink raw reply [flat|nested] 16+ messages in thread* [Bug rtl-optimization/110307] ICE in move_insn, at haifa-sched.cc:5473 when building Ruby on alpha with -fPIC -O2 (or -fpeephole2 -fschedule-insns2)
2023-06-19 7:08 [Bug rtl-optimization/110307] New: ICE in move_insn, at haifa-sched.cc:5473 on alpha with -fPIC -fpeephole2 -fschedule-insns2 matoro_gcc_bugzilla at matoro dot tk
` (9 preceding siblings ...)
2023-06-22 15:55 ` amonakov at gcc dot gnu.org
@ 2023-06-22 16:17 ` matoro_gcc_bugzilla at matoro dot tk
2023-06-25 16:39 ` matoro_gcc_bugzilla at matoro dot tk
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From: matoro_gcc_bugzilla at matoro dot tk @ 2023-06-22 16:17 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110307
--- Comment #11 from matoro <matoro_gcc_bugzilla at matoro dot tk> ---
(In reply to Alexander Monakov from comment #10)
> I think the first patch may result in duplicated notes, so I wouldn't
> recommend picking it.
Oh okay, so just the second patch then? Let me try that.
^ permalink raw reply [flat|nested] 16+ messages in thread* [Bug rtl-optimization/110307] ICE in move_insn, at haifa-sched.cc:5473 when building Ruby on alpha with -fPIC -O2 (or -fpeephole2 -fschedule-insns2)
2023-06-19 7:08 [Bug rtl-optimization/110307] New: ICE in move_insn, at haifa-sched.cc:5473 on alpha with -fPIC -fpeephole2 -fschedule-insns2 matoro_gcc_bugzilla at matoro dot tk
` (10 preceding siblings ...)
2023-06-22 16:17 ` matoro_gcc_bugzilla at matoro dot tk
@ 2023-06-25 16:39 ` matoro_gcc_bugzilla at matoro dot tk
2023-06-25 16:46 ` amonakov at gcc dot gnu.org
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From: matoro_gcc_bugzilla at matoro dot tk @ 2023-06-25 16:39 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110307
--- Comment #12 from matoro <matoro_gcc_bugzilla at matoro dot tk> ---
Just tested applying this patch on top of 13 and it worked! Thanks so much for
the help!
^ permalink raw reply [flat|nested] 16+ messages in thread* [Bug rtl-optimization/110307] ICE in move_insn, at haifa-sched.cc:5473 when building Ruby on alpha with -fPIC -O2 (or -fpeephole2 -fschedule-insns2)
2023-06-19 7:08 [Bug rtl-optimization/110307] New: ICE in move_insn, at haifa-sched.cc:5473 on alpha with -fPIC -fpeephole2 -fschedule-insns2 matoro_gcc_bugzilla at matoro dot tk
` (11 preceding siblings ...)
2023-06-25 16:39 ` matoro_gcc_bugzilla at matoro dot tk
@ 2023-06-25 16:46 ` amonakov at gcc dot gnu.org
2023-11-10 21:37 ` sjames at gcc dot gnu.org
2023-11-11 9:01 ` amonakov at gcc dot gnu.org
14 siblings, 0 replies; 16+ messages in thread
From: amonakov at gcc dot gnu.org @ 2023-06-25 16:46 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110307
--- Comment #13 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Note to self: check how control_flow_insn_p relates.
^ permalink raw reply [flat|nested] 16+ messages in thread* [Bug rtl-optimization/110307] ICE in move_insn, at haifa-sched.cc:5473 when building Ruby on alpha with -fPIC -O2 (or -fpeephole2 -fschedule-insns2)
2023-06-19 7:08 [Bug rtl-optimization/110307] New: ICE in move_insn, at haifa-sched.cc:5473 on alpha with -fPIC -fpeephole2 -fschedule-insns2 matoro_gcc_bugzilla at matoro dot tk
` (12 preceding siblings ...)
2023-06-25 16:46 ` amonakov at gcc dot gnu.org
@ 2023-11-10 21:37 ` sjames at gcc dot gnu.org
2023-11-11 9:01 ` amonakov at gcc dot gnu.org
14 siblings, 0 replies; 16+ messages in thread
From: sjames at gcc dot gnu.org @ 2023-11-10 21:37 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110307
--- Comment #14 from Sam James <sjames at gcc dot gnu.org> ---
(In reply to Alexander Monakov from comment #13)
> Note to self: check how control_flow_insn_p relates.
Did you have a chance to look at this bit? matoro asked me to cherry-pick it
downstream but it's in generic code from a skim so...
^ permalink raw reply [flat|nested] 16+ messages in thread* [Bug rtl-optimization/110307] ICE in move_insn, at haifa-sched.cc:5473 when building Ruby on alpha with -fPIC -O2 (or -fpeephole2 -fschedule-insns2)
2023-06-19 7:08 [Bug rtl-optimization/110307] New: ICE in move_insn, at haifa-sched.cc:5473 on alpha with -fPIC -fpeephole2 -fschedule-insns2 matoro_gcc_bugzilla at matoro dot tk
` (13 preceding siblings ...)
2023-11-10 21:37 ` sjames at gcc dot gnu.org
@ 2023-11-11 9:01 ` amonakov at gcc dot gnu.org
14 siblings, 0 replies; 16+ messages in thread
From: amonakov at gcc dot gnu.org @ 2023-11-11 9:01 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110307
Alexander Monakov <amonakov at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |uros at gcc dot gnu.org
--- Comment #15 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
It did not bring enlightenment. It looks like INT_MIN REG_EH_REGION annotating
a call that *does not* perform a non-local goto was a late addition, breaking
the assumption "EH_REGION notes may appear only on insns that may throw
exceptions", and now a few places in the compiler look as if they may forget to
preserve the special INT_MIN REG_EH_REGION note.
Uros, would you mind reading the discussion in this bug? Do you have
suggestions how to proceed here?
^ permalink raw reply [flat|nested] 16+ messages in thread