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From: "jcmvbkbc at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/65730] New: xtensa: ICE in libstdc++-v3/include/bits/atomic_base.h: In function ‘bool std::atomic_flag_test_and_set_explicit(std::__atomic_flag_base*, std::memory_order)’
Date: Fri, 10 Apr 2015 13:15:00 -0000 [thread overview]
Message-ID: <bug-65730-4@http.gcc.gnu.org/bugzilla/> (raw)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65730
Bug ID: 65730
Summary: xtensa: ICE in
libstdc++-v3/include/bits/atomic_base.h: In function
‘bool
std::atomic_flag_test_and_set_explicit(std::__atomic_f
lag_base*, std::memory_order)’
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: jcmvbkbc at gcc dot gnu.org
Created attachment 35287
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35287&action=edit
preprocessed source
With overlay that has no hardware multiplication option building libstdc++ ends
with ICE:
cc1plus -std=gnu++11 compatibility-atomic-c++0x.ii
In file included from
/home/jcmvbkbc/tmp/jr/Max_Fusion_MMU_KC705/build-buildroot/build/host-gcc-final-4.8.4/build/xtensa-buildroot-linux-uclibc/libstdc++-v3/include/atomic:41:0,
from
../../../../libstdc++-v3/src/c++11/compatibility-atomic-c++0x.cc:26:
/home/jcmvbkbc/tmp/jr/Max_Fusion_MMU_KC705/build-buildroot/build/host-gcc-final-4.8.4/build/xtensa-buildroot-linux-uclibc/libstdc++-v3/include/bits/atomic_base.h:
In member function ‘bool std::atomic_flag::test_and_set(std::memory_order)’:
/home/jcmvbkbc/tmp/jr/Max_Fusion_MMU_KC705/build-buildroot/build/host-gcc-final-4.8.4/build/xtensa-buildroot-linux-uclibc/libstdc++-v3/include/bits/atomic_base.h:287:47:
internal compiler error: Segmentation fault
return __atomic_test_and_set (&_M_i, __m);
^
0xed8ae7 crash_signal
../../gcc/gcc/toplev.c:383
0xdba4e1 widened_mode
../../gcc/gcc/optabs.c:303
0xdbd699 expand_binop(machine_mode, optab_tag, rtx_def*, rtx_def*, rtx_def*,
int, optab_methods)
../../gcc/gcc/optabs.c:1561
0xdbce5a expand_simple_binop(machine_mode, rtx_code, rtx_def*, rtx_def*,
rtx_def*, int, optab_methods)
../../gcc/gcc/optabs.c:1313
0x1248be4 init_alignment_context
../../gcc/gcc/config/xtensa/xtensa.c:1470
0x1248cb4 xtensa_expand_compare_and_swap(rtx_def*, rtx_def*, rtx_def*,
rtx_def*)
../../gcc/gcc/config/xtensa/xtensa.c:1494
0x125383e gen_sync_compare_and_swapqi(rtx_def*, rtx_def*, rtx_def*, rtx_def*)
../../gcc/gcc/config/xtensa/xtensa.md:1977
0xdcee66 insn_gen_fn::operator()(rtx_def*, rtx_def*, rtx_def*, rtx_def*) const
../../gcc/gcc/recog.h:305
0xdcddc5 maybe_gen_insn(insn_code, unsigned int, expand_operand*)
../../gcc/gcc/optabs.c:8391
0xdce0c2 maybe_expand_insn(insn_code, unsigned int, expand_operand*)
../../gcc/gcc/optabs.c:8421
0xdcc1c1 expand_atomic_compare_and_swap(rtx_def**, rtx_def**, rtx_def*,
rtx_def*, rtx_def*, bool, memmodel, memmodel)
../../gcc/gcc/optabs.c:7533
0xdcb856 expand_compare_and_swap_loop
../../gcc/gcc/optabs.c:7182
0xdcbba7 maybe_emit_compare_and_swap_exchange_loop
../../gcc/gcc/optabs.c:7294
0xdcbd6d expand_atomic_test_and_set(rtx_def*, rtx_def*, memmodel)
../../gcc/gcc/optabs.c:7406
0x98afc6 expand_builtin_atomic_test_and_set
../../gcc/gcc/builtins.c:5679
0x98e5a1 expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode, int)
../../gcc/gcc/builtins.c:6974
0xb0b404 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc/gcc/expr.c:10488
0xb00e4a expand_expr_real(tree_node*, rtx_def*, machine_mode, expand_modifier,
rtx_def**, bool)
../../gcc/gcc/expr.c:8017
0xae8ff3 expand_expr
../../gcc/gcc/expr.h:254
0xaf6f2f store_expr_with_bounds(tree_node*, rtx_def*, int, bool, tree_node*)
../../gcc/gcc/expr.c:5290
This is reproducible with current mainline and with 4.9.4.
>From gcc-bugs-return-483299-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Apr 10 13:16:58 2015
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From: "yroux at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/65710] [4.9/5 Regression] Thumb1 ICE caused by no register to spill
Date: Fri, 10 Apr 2015 13:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?ide710
--- Comment #11 from Yvan Roux <yroux at gcc dot gnu.org> ---
Re-introducing the condition that stop updating lra_constraint_new_regno_start
after switching off inheritance and remat, seems to fix the problem:
gcc.target/arm/pr65647-2.c is ok and the reduced test case from Terry builds as
well, at least with my quick test on 4.9 branch. I'll do it on trunk and pass
a full validation.
Is it the correct fix for you Vlad ?
next reply other threads:[~2015-04-10 13:15 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-10 13:15 jcmvbkbc at gcc dot gnu.org [this message]
2015-04-10 13:17 ` [Bug target/65730] " jcmvbkbc at gcc dot gnu.org
2015-05-20 18:56 ` jcmvbkbc at gcc dot gnu.org
2015-05-20 19:14 ` jcmvbkbc at gcc dot gnu.org
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