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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/101636] [11/12 Regression] ICE: verify_gimple
 failed (error: conversion of register to a different size in
 'view_convert_expr')
Date: Mon, 08 Nov 2021 12:56:20 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101636

--- Comment #10 from rguenther at suse dot de <rguenther at suse dot de> ---
On Mon, 8 Nov 2021, marxin at gcc dot gnu.org wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101636
>=20
> --- Comment #9 from Martin Li=C5=A1ka <marxin at gcc dot gnu.org> ---
> Valgrind reports:
>=20
> =3D=3D9236=3D=3D Conditional jump or move depends on uninitialised value(=
s)
> =3D=3D9236=3D=3D    at 0xA3EC2C: bitmap_clear_bit (sbitmap.h:153)
> =3D=3D9236=3D=3D    by 0xA3EC2C: verify_loop_structure() (cfgloop.c:1579)
> =3D=3D9236=3D=3D    by 0xD3FAC4: checking_verify_loop_structure (cfgloop.=
h:646)
> =3D=3D9236=3D=3D    by 0xD3FAC4: loop_optimizer_init(unsigned int) (loop-=
init.c:130)
> =3D=3D9236=3D=3D    by 0xE4E9D7: execute (predict.c:4094)
> =3D=3D9236=3D=3D    by 0xE4E9D7: (anonymous
> namespace)::pass_profile::execute(function*) (predict.c:4087)
> =3D=3D9236=3D=3D    by 0xE23EF9: execute_one_pass(opt_pass*) (passes.c:25=
67)
> =3D=3D9236=3D=3D    by 0xE247F2: execute_pass_list_1(opt_pass*) (passes.c=
:2656)
> =3D=3D9236=3D=3D    by 0xE24804: execute_pass_list_1(opt_pass*) (passes.c=
:2657)
> =3D=3D9236=3D=3D    by 0xE24835: execute_pass_list(function*, opt_pass*)
> (passes.c:2667)
> =3D=3D9236=3D=3D    by 0xE25258: do_per_function_toporder (passes.c:1773)
> =3D=3D9236=3D=3D    by 0xE25258: do_per_function_toporder(void (*)(functi=
on*, void*),
> void*) (passes.c:1736)
> =3D=3D9236=3D=3D    by 0xE25404: execute_ipa_pass_list(opt_pass*) (passes=
.c:3001)
> =3D=3D9236=3D=3D    by 0xA720D8: ipa_passes (cgraphunit.c:2154)
> =3D=3D9236=3D=3D    by 0xA720D8: compile (cgraphunit.c:2289)
> =3D=3D9236=3D=3D    by 0xA720D8: symbol_table::compile() (cgraphunit.c:22=
67)
> =3D=3D9236=3D=3D    by 0xA74C27: symbol_table::finalize_compilation_unit()
> (cgraphunit.c:2537)
> =3D=3D9236=3D=3D    by 0xF1354C: compile_file() (toplev.c:477)

I'm going to fix that (but it's spurious)=