[Bug tree-optimization/114251] [14 regression] ICE when building python-3.12.2's Hacl_Hash_SHA2.c (tree check: expected class ‘type’, have ‘exceptional’ (error_mark) in useless_type_conversion_p, at gimple-expr.cc:85)

[zsojka at seznam dot cz via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114251

Zdenek Sojka <zsojka at seznam dot cz> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |zsojka at seznam dot cz

--- Comment #1 from Zdenek Sojka <zsojka at seznam dot cz> ---
Created attachment 57627
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57627&action=edit
testcase triggering the same ICE, reduced

$ x86_64-pc-linux-gnu-gcc -O2 -fno-vect-cost-model -mavx2 -fno-strict-overflow
testcase.c 
during GIMPLE pass: slp
testcase.c: In function 'foo':
testcase.c:4:1: internal compiler error: tree check: expected class 'type',
have 'exceptional' (error_mark) in useless_type_conversion_p, at
gimple-expr.cc:85
    4 | foo (long e)
      | ^~~
0x892abf tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
        /repo/gcc-trunk/gcc/tree.cc:9005
0x77dab4 tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
        /repo/gcc-trunk/gcc/tree.h:3767
0x77dab4 useless_type_conversion_p(tree_node*, tree_node*)
        /repo/gcc-trunk/gcc/gimple-expr.cc:85
0x154c759 verify_gimple_assign_binary
        /repo/gcc-trunk/gcc/tree-cfg.cc:4305
0x155e9b1 verify_gimple_in_cfg(function*, bool, bool)
        /repo/gcc-trunk/gcc/tree-cfg.cc:5599
0x13cde04 execute_function_todo
        /repo/gcc-trunk/gcc/passes.cc:2088
0x13ce35e execute_todo
        /repo/gcc-trunk/gcc/passes.cc:2142
Please submit a full bug report, with preprocessed source (by using
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Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.