https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85467
Bug ID: 85467
Summary: [8 Regression] ICE: verify_gimple failed: non-trivial
conversion at assignment with -O2 -fno-tree-ccp
--param=sccvn-max-scc-size=10
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
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 43987
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43987&action=edit
reduced testcase
This looks very similar to PR85195
The ICE can be reproduced with any of the typedefs:
typedef char T;
typedef short T;
typedef int T;
typedef long T;
typedef long long T;
typedef __int128 T;
as long as the vector has just 1 member.
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O2 -fno-tree-ccp --param=sccvn-max-scc-size=10
testcase.c
testcase.c: In function 'foo':
testcase.c:24:1: error: non-trivial conversion at assignment
}
^
vector(1) char
char
_5 = 0;
testcase.c:24:1: error: non-trivial conversion at assignment
V
char
_8 = 0;
during GIMPLE pass: forwprop
testcase.c:24:1: internal compiler error: verify_gimple failed
0xdbaca9 verify_gimple_in_cfg(function*, bool)
/repo/gcc-trunk/gcc/tree-cfg.c:5585
0xc37613 execute_function_todo
/repo/gcc-trunk/gcc/passes.c:1994
0xc37f59 execute_todo
/repo/gcc-trunk/gcc/passes.c:2048
Please submit a full bug report,
with preprocessed source if appropriate.
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-259457-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/8.0.1/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-259457-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
gcc version 8.0.1 20180418 (experimental) (GCC)
$
