https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114299
Bug ID: 114299
Summary: ICE: SIGSEGV: in dyn_cast<gassign*, gimple>
(is-a.h:282) with -mgeneral-regs-only and __bf16
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: error-recovery
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 57661
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57661&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -mgeneral-regs-only testcase.c -wrapper valgrind,-q
testcase.c: In function 'foo':
testcase.c:10:3: error: invalid conversion from type '__bf16' without option
'-msse2'
10 | return __builtin_shufflevector(v, a, 1, 2, 5, 0, 1, 6, 6, 4);
| ^~~~~~
testcase.c:8:1: error: SSE register return with SSE disabled
8 | foo(void)
| ^~~
==9563== Invalid read of size 1
==9563== at 0x1AAA648: dyn_cast<gassign*, gimple> (is-a.h:282)
==9563== by 0x1AAA648: gimple_simplify_VEC_PERM_EXPR(gimple_match_op*,
gimple**, tree_node* (*)(tree_node*), code_helper, tree_node*, tree_node*,
tree_node*, tree_node*) (gimple-match-4.cc:17752)
==9563== by 0x1C8F915: gimple_resimplify3(gimple**, gimple_match_op*,
tree_node* (*)(tree_node*)) (gimple-match-exports.cc:1107)
==9563== by 0x1C90EF7: gimple_simplify(gimple*, gimple_match_op*, gimple**,
tree_node* (*)(tree_node*), tree_node* (*)(tree_node*))
(gimple-match-exports.cc:898)
==9563== by 0x117063C: fold_stmt_1(gimple_stmt_iterator*, bool, tree_node*
(*)(tree_node*)) (gimple-fold.cc:6362)
==9563== by 0x11C14A0: gimplify_modify_expr(tree_node**, gimple**, gimple**,
bool) (gimplify.cc:6582)
==9563== by 0x11AABE9: gimplify_expr(tree_node**, gimple**, gimple**, bool
(*)(tree_node*), int) (gimplify.cc:17786)
==9563== by 0x11AD2D6: gimplify_stmt(tree_node**, gimple**)
(gimplify.cc:7480)
==9563== by 0x11BB6A0: gimplify_and_add (gimplify.cc:493)
==9563== by 0x11BB6A0: gimplify_return_expr(tree_node*, gimple**)
(gimplify.cc:1883)
==9563== by 0x11AB9CA: gimplify_expr(tree_node**, gimple**, gimple**, bool
(*)(tree_node*), int) (gimplify.cc:18048)
==9563== by 0x11AD2D6: gimplify_stmt(tree_node**, gimple**)
(gimplify.cc:7480)
==9563== by 0x11AE3D9: gimplify_bind_expr(tree_node**, gimple**)
(gimplify.cc:1614)
==9563== by 0x11AB957: gimplify_expr(tree_node**, gimple**, gimple**, bool
(*)(tree_node*), int) (gimplify.cc:17987)
==9563== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==9563==
testcase.c:10:10: internal compiler error: Segmentation fault
10 | return __builtin_shufflevector(v, a, 1, 2, 5, 0, 1, 6, 6, 4);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0x151311f crash_signal
/repo/gcc-trunk/gcc/toplev.cc:319
0x1aaa648 gassign* dyn_cast<gassign*, gimple>(gimple*)
/repo/gcc-trunk/gcc/is-a.h:282
0x1aaa648 gimple_simplify_VEC_PERM_EXPR(gimple_match_op*, gimple**, tree_node*
(*)(tree_node*), code_helper, tree_node*, tree_node*, tree_node*, tree_node*)
/repo/build-gcc-trunk-amd64/gcc/gimple-match-4.cc:17752
0x1c8f915 gimple_resimplify3
/repo/gcc-trunk/gcc/gimple-match-exports.cc:1107
0x1c90ef7 gimple_simplify(gimple*, gimple_match_op*, gimple**, tree_node*
(*)(tree_node*), tree_node* (*)(tree_node*))
/repo/gcc-trunk/gcc/gimple-match-exports.cc:898
0x117063c fold_stmt_1
/repo/gcc-trunk/gcc/gimple-fold.cc:6362
0x11c14a0 gimplify_modify_expr
/repo/gcc-trunk/gcc/gimplify.cc:6582
0x11aabe9 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/repo/gcc-trunk/gcc/gimplify.cc:17786
0x11ad2d6 gimplify_stmt(tree_node**, gimple**)
/repo/gcc-trunk/gcc/gimplify.cc:7480
0x11bb6a0 gimplify_and_add(tree_node*, gimple**)
/repo/gcc-trunk/gcc/gimplify.cc:493
0x11bb6a0 gimplify_return_expr
/repo/gcc-trunk/gcc/gimplify.cc:1883
0x11ab9ca gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/repo/gcc-trunk/gcc/gimplify.cc:18048
0x11ad2d6 gimplify_stmt(tree_node**, gimple**)
/repo/gcc-trunk/gcc/gimplify.cc:7480
0x11ae3d9 gimplify_bind_expr
/repo/gcc-trunk/gcc/gimplify.cc:1614
0x11ab957 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/repo/gcc-trunk/gcc/gimplify.cc:17987
0x11c2574 gimplify_stmt(tree_node**, gimple**)
/repo/gcc-trunk/gcc/gimplify.cc:7480
0x11c2574 gimplify_body(tree_node*, bool)
/repo/gcc-trunk/gcc/gimplify.cc:19053
0x11c299a gimplify_function_tree(tree_node*)
/repo/gcc-trunk/gcc/gimplify.cc:19252
0xfd0ce7 cgraph_node::analyze()
/repo/gcc-trunk/gcc/cgraphunit.cc:687
0xfd3607 analyze_functions
/repo/gcc-trunk/gcc/cgraphunit.cc:1251
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.
