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* [Bug middle-end/112770] New: during GIMPLE pass: bitintlower0 ICE: verify_gimple failed: statement marked for throw in middle of block with -fnon-call-exceptions and _BitInt(128)
@ 2023-11-29 19:55 zsojka at seznam dot cz
2023-12-01 9:57 ` [Bug middle-end/112770] " cvs-commit at gcc dot gnu.org
2023-12-01 9:58 ` jakub at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: zsojka at seznam dot cz @ 2023-11-29 19:55 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112770
Bug ID: 112770
Summary: during GIMPLE pass: bitintlower0 ICE: verify_gimple
failed: statement marked for throw in middle of block
with -fnon-call-exceptions and _BitInt(128)
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: middle-end
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 56721
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56721&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -fnon-call-exceptions testcase.c
testcase.c: In function 'foo':
testcase.c:5:5: warning: division by zero [-Wdiv-by-zero]
5 | a /= 0;
| ^~
testcase.c:2:1: error: statement marked for throw in middle of block
2 | foo (void)
| ^~~
_7 = _8 / 0;
during GIMPLE pass: bitintlower0
testcase.c:2:1: internal compiler error: verify_gimple failed
0x1539ca5 verify_gimple_in_cfg(function*, bool, bool)
/repo/gcc-trunk/gcc/tree-cfg.cc:5662
0x13a32e4 execute_function_todo
/repo/gcc-trunk/gcc/passes.cc:2088
0x13a383e execute_todo
/repo/gcc-trunk/gcc/passes.cc:2142
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ 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-r14-5974-20231129191907-g259bb7a45a2-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/14.0.0/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 --with-cloog --with-ppl --with-isl
--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 --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r14-5974-20231129191907-g259bb7a45a2-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20231129 (experimental) (GCC)
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug middle-end/112770] during GIMPLE pass: bitintlower0 ICE: verify_gimple failed: statement marked for throw in middle of block with -fnon-call-exceptions and _BitInt(128)
2023-11-29 19:55 [Bug middle-end/112770] New: during GIMPLE pass: bitintlower0 ICE: verify_gimple failed: statement marked for throw in middle of block with -fnon-call-exceptions and _BitInt(128) zsojka at seznam dot cz
@ 2023-12-01 9:57 ` cvs-commit at gcc dot gnu.org
2023-12-01 9:58 ` jakub at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2023-12-01 9:57 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112770
--- Comment #1 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:
https://gcc.gnu.org/g:b1fe98dee21773b9d908469effe2580567b903fb
commit r14-6051-gb1fe98dee21773b9d908469effe2580567b903fb
Author: Jakub Jelinek <jakub@redhat.com>
Date: Fri Dec 1 10:56:52 2023 +0100
lower-bitint: Fix lowering of middle sized _BitInt operations which can
throw [PR112770]
The middle kind _BitInt lowering is mostly done by casting the BITINT_TYPE
operands (if any) to a signed/unsigned integer type which has larger/equal
precision, using such integer type also for the lhs (if BITINT_TYPE) and
and adding a cast after the statement from that new lhs to the old
(BITINT_TYPE) lhs. Note, for middle kind this isn't done for GIMPLE_CALLs.
Most of the time that works nicely, the exception as the following testcase
shows is -fnon-call-exceptions and some operations which can trap. Because
inserting the cast to a new lhs after the statement results in a trapping
statement in the middle of a basic block.
The following patch fixes that by emitting the cast on the fallthru edge
instead.
2023-12-01 Jakub Jelinek <jakub@redhat.com>
PR middle-end/112770
* gimple-lower-bitint.cc (gimple_lower_bitint): When adjusting
lhs of middle _BitInt setter which ends bb, insert cast on
the fallthru edge rather than after stmt.
* gcc.dg/bitint-45.c: New test.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug middle-end/112770] during GIMPLE pass: bitintlower0 ICE: verify_gimple failed: statement marked for throw in middle of block with -fnon-call-exceptions and _BitInt(128)
2023-11-29 19:55 [Bug middle-end/112770] New: during GIMPLE pass: bitintlower0 ICE: verify_gimple failed: statement marked for throw in middle of block with -fnon-call-exceptions and _BitInt(128) zsojka at seznam dot cz
2023-12-01 9:57 ` [Bug middle-end/112770] " cvs-commit at gcc dot gnu.org
@ 2023-12-01 9:58 ` jakub at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: jakub at gcc dot gnu.org @ 2023-12-01 9:58 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112770
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2023-11-29 19:55 [Bug middle-end/112770] New: during GIMPLE pass: bitintlower0 ICE: verify_gimple failed: statement marked for throw in middle of block with -fnon-call-exceptions and _BitInt(128) zsojka at seznam dot cz
2023-12-01 9:57 ` [Bug middle-end/112770] " cvs-commit at gcc dot gnu.org
2023-12-01 9:58 ` jakub at gcc dot gnu.org
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