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.