https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100790
Bug ID: 100790
Summary: ICE with -O2: in verify_range, at value-range.cc:385
Product: gcc
Version: tree-ssa
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: cnsun at uwaterloo dot ca
Target Milestone: ---
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/scratch/software/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/12.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /tmp/tmp.SQC1E9RsGE-gcc-builder/gcc/configure
--enable-languages=c,c++,lto --enable-checking-yes --enable-multiarch
--prefix=/scratch/software/gcc-trunk --disable-bootstrap
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 12.0.0 20210527 (experimental) [master revision
:d03f010a0:01c59ef2e5a59b44d2b662361196abb6be872a20] (GCC)
$ cat mutant.c
__builtin_clz(int x) { x ? __builtin_clz(x) : 32; }
$ gcc-trunk -O2 mutant.c
mutant.c:1:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
1 | __builtin_clz(int x) { x ? __builtin_clz(x) : 32; }
| ^~~~~~~~~~~~~
during GIMPLE pass: evrp
mutant.c: In function ‘__builtin_clz’:
mutant.c:1:1: internal compiler error: in verify_range, at value-range.cc:385
0x7d4aa5 irange::verify_range()
/tmp/tmp.SQC1E9RsGE-gcc-builder/gcc/gcc/value-range.cc:385
0xc18ef7 fold_using_range::range_of_builtin_call(irange&, gcall*, fur_source&)
/tmp/tmp.SQC1E9RsGE-gcc-builder/gcc/gcc/gimple-range.cc:799
0xc1a6aa fold_using_range::range_of_call(irange&, gcall*, fur_source&)
/tmp/tmp.SQC1E9RsGE-gcc-builder/gcc/gcc/gimple-range.cc:626
0xc1ad40 fold_using_range::fold_stmt(irange&, gimple*, fur_source&, tree_node*)
/tmp/tmp.SQC1E9RsGE-gcc-builder/gcc/gcc/gimple-range.cc:380
0xc1afc2 gimple_ranger::fold_range_internal(irange&, gimple*, tree_node*)
/tmp/tmp.SQC1E9RsGE-gcc-builder/gcc/gcc/gimple-range.cc:1067
0xc1afc2 gimple_ranger::range_of_stmt(irange&, gimple*, tree_node*)
/tmp/tmp.SQC1E9RsGE-gcc-builder/gcc/gcc/gimple-range.cc:1097
0xc1a417 gimple_ranger::range_of_expr(irange&, tree_node*, gimple*)
/tmp/tmp.SQC1E9RsGE-gcc-builder/gcc/gcc/gimple-range.cc:980
0x12481b4 range_query::value_of_expr(tree_node*, gimple*)
/tmp/tmp.SQC1E9RsGE-gcc-builder/gcc/gcc/value-query.cc:86
0x1962865 hybrid_folder::value_of_expr(tree_node*, gimple*)
/tmp/tmp.SQC1E9RsGE-gcc-builder/gcc/gcc/gimple-ssa-evrp.c:233
0x10e1e06 substitute_and_fold_dom_walker::before_dom_children(basic_block_def*)
/tmp/tmp.SQC1E9RsGE-gcc-builder/gcc/gcc/tree-ssa-propagate.c:816
0x1935277 dom_walker::walk(basic_block_def*)
/tmp/tmp.SQC1E9RsGE-gcc-builder/gcc/gcc/domwalk.c:309
0x10e10f9 substitute_and_fold_engine::substitute_and_fold(basic_block_def*)
/tmp/tmp.SQC1E9RsGE-gcc-builder/gcc/gcc/tree-ssa-propagate.c:987
0x196244d execute_early_vrp
/tmp/tmp.SQC1E9RsGE-gcc-builder/gcc/gcc/gimple-ssa-evrp.c:347
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.
