https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103690
Bug ID: 103690
Summary: [12 Regression] ICE: in build2, at tree.c:4985 with
-O2 -fno-tree-dce -fno-tree-dse -fno-tree-fre
--param=max-jump-thread-duplication-stmts=94
Product: gcc
Version: 12.0
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
Created attachment 51989
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51989&action=edit
auto-reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O2 -fno-tree-dce -fno-tree-dse -fno-tree-fre
--param=max-jump-thread-duplication-stmts=94 -g testcase.C
testcase.C: In member function '__alloc_traits vector<
<template-parameter-1-1>, <template-parameter-1-2> >::back()':
testcase.C:55:3: warning: no return statement in function returning non-void
[-Wreturn-type]
55 | }
| ^
during GIMPLE pass: pre
testcase.C: In member function 'void
EngineOverrideManager::ResetToDefaultMapping()':
testcase.C:88:6: internal compiler error: in build2, at tree.c:4985
88 | void EngineOverrideManager::ResetToDefaultMapping() {
| ^~~~~~~~~~~~~~~~~~~~~
0x8cdf20 build2(tree_code, tree_node*, tree_node*, tree_node*)
/repo/gcc-trunk/gcc/tree.c:4985
0x1125079 gimple_assign_rhs_to_tree(gimple*)
/repo/gcc-trunk/gcc/cfgexpand.c:116
0x187316d insert_debug_temp_for_var_def(gimple_stmt_iterator*, tree_node*)
/repo/gcc-trunk/gcc/tree-ssa.c:408
0x187339d insert_debug_temps_for_defs(gimple_stmt_iterator*)
/repo/gcc-trunk/gcc/tree-ssa.c:514
0x12f2fe0 gsi_remove(gimple_stmt_iterator*, bool)
/repo/gcc-trunk/gcc/gimple-iterator.c:567
0x176980f simple_dce_from_worklist(bitmap_head*)
/repo/gcc-trunk/gcc/tree-ssa-dce.c:2029
0x17f3ffb execute
/repo/gcc-trunk/gcc/tree-ssa-pre.c:4438
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-r12-5936-20211213173013-g16c848090f2-checking-yes-rtl-df-extra-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/12.0.0/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
--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-r12-5936-20211213173013-g16c848090f2-checking-yes-rtl-df-extra-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 12.0.0 20211213 (experimental) (GCC)
