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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug debug/103756] New: [12 Regression] -fcompare-debug failure (length) with -O -fconserve-stack -frename-registers -fno-tree-ch -fira-algorithm=priority Date: Fri, 17 Dec 2021 08:11:41 +0000 [thread overview] Message-ID: <bug-103756-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103756 Bug ID: 103756 Summary: [12 Regression] -fcompare-debug failure (length) with -O -fconserve-stack -frename-registers -fno-tree-ch -fira-algorithm=priority Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: debug Assignee: unassigned at gcc dot gnu.org Reporter: zsojka at seznam dot cz CC: aoliva at gcc dot gnu.org Target Milestone: --- Host: x86_64-pc-linux-gnu Created attachment 52022 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52022&action=edit auto-reduced testcase Compiler output: $ x86_64-pc-linux-gnu-gcc -O -fcompare-debug -fconserve-stack -frename-registers -fno-tree-ch -fira-algorithm=priority testcase.C x86_64-pc-linux-gnu-gcc: error: testcase.C: '-fcompare-debug' failure (length) $ diff -u *gkd --- a-testcase.C.gkd 2021-12-17 09:05:04.178074934 +0100 +++ a-testcase.gk.C.gkd 2021-12-17 09:05:04.238074933 +0100 @@ -75,6 +75,9 @@ ]) "testcase.C":21:25# {*subdi_1} (expr_list:REG_UNUSED (reg:CC 17 flags) (nil))) +(insn # 0 0 2 (set (reg:DI 39 r11 [orig:91 _40 ] [91]) + (reg/f:DI 5 di [orig:104 *__last_4(D).current ] [104])) "testcase.C":21:25# {*movdi_internal} + (nil)) (insn # 0 0 2 (set (reg:QI 38 r10 [orig:89 __copy_move_b___trans_tmp_9.1_32 ] [89]) (mem/c:QI (symbol_ref:DI ("__copy_move_b___trans_tmp_9") [flags 0x2] <var_decl # __copy_move_b___trans_tmp_9>) [ __copy_move_b___trans_tmp_9+0 S1 A8])) "testcase.C":29:24# {*movqi_internal} (nil)) @@ -84,7 +87,8 @@ (insn # 0 0 2 (set (reg:SI 4 si [105]) (plus:SI (reg:SI 36 r8 [orig:86 _13 ] [86]) (reg:SI 5 di [orig:91 _40 ] [91]))) "testcase.C":27:16# {*leasi} - (nil)) + (expr_list:REG_DEAD (reg:SI 5 di [orig:91 _40 ] [91]) + (nil))) (jump_insn # 0 0 2 (set (pc) (label_ref #)) "testcase.C":27:5# {jump} (nil) @@ -131,12 +135,12 @@ -> 3) (note # 0 0 [bb 5] NOTE_INSN_BASIC_BLOCK) (insn # 0 0 5 (set (reg:DI 0 ax [orig:107 _40 ] [107]) - (zero_extend:DI (reg:SI 5 di [orig:91 _40 ] [91]))) "testcase.C":9:45# {*zero_extendsidi2} + (zero_extend:DI (reg:SI 39 r11 [orig:91 _40 ] [91]))) "testcase.C":9:45# {*zero_extendsidi2} (nil)) (insn # 0 0 5 (set (reg:CCGOC 17 flags) - (compare:CCGOC (reg:SI 5 di [orig:91 _40 ] [91]) + (compare:CCGOC (reg:SI 39 r11 [orig:91 _40 ] [91]) (const_int 0 [0]))) "testcase.C":9:45# {*cmpsi_ccno_1} - (expr_list:REG_DEAD (reg:SI 5 di [orig:91 _40 ] [91]) + (expr_list:REG_DEAD (reg:SI 39 r11 [orig:91 _40 ] [91]) (nil))) (insn # 0 0 5 (set (reg:DI 2 cx [108]) (const_int 0 [0])) "testcase.C":9:45# {*movdi_internal} $ x86_64-pc-linux-gnu-gcc -v Using built-in specs. COLLECT_GCC=/repo/gcc-trunk/binary-latest/bin/x86_64-pc-linux-gnu-gcc COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r12-6031-20211217093444-g79a89108dd3-checking-yes-rtl-df-extra-nobootstrap-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 --disable-bootstrap --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-r12-6031-20211217093444-g79a89108dd3-checking-yes-rtl-df-extra-nobootstrap-amd64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 12.0.0 20211217 (experimental) (GCC)
next reply other threads:[~2021-12-17 8:11 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-12-17 8:11 zsojka at seznam dot cz [this message] 2021-12-17 8:20 ` [Bug rtl-optimization/103756] " pinskia at gcc dot gnu.org 2021-12-17 8:47 ` [Bug rtl-optimization/103756] [12 Regression] -fcompare-debug failure (length) with -O -fconserve-stack -frename-registers -fno-tree-ch -fira-algorithm=priority since r12-5978-ga888259a71fbbb7f marxin at gcc dot gnu.org 2021-12-28 18:00 ` jakub at gcc dot gnu.org 2021-12-30 21:26 ` cvs-commit at gcc dot gnu.org 2021-12-30 21:28 ` jakub at gcc dot gnu.org
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