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* [Bug rtl-optimization/105333] New: [10/11/12 Regression] ICE: in simplify_subreg, at simplify-rtx.cc:7346 with -Og -fno-tree-coalesce-vars -fno-tree-fre
@ 2022-04-21 10:47 zsojka at seznam dot cz
  2022-04-21 11:19 ` [Bug rtl-optimization/105333] " rguenth at gcc dot gnu.org
                   ` (8 more replies)
  0 siblings, 9 replies; 10+ messages in thread
From: zsojka at seznam dot cz @ 2022-04-21 10:47 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105333

            Bug ID: 105333
           Summary: [10/11/12 Regression] ICE: in simplify_subreg, at
                    simplify-rtx.cc:7346 with -Og -fno-tree-coalesce-vars
                    -fno-tree-fre
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zsojka at seznam dot cz
  Target Milestone: ---
              Host: x86_64-pc-linux-gnu

Created attachment 52845
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52845&action=edit
reduced testcase

Compiler output:
$ x86_64-pc-linux-gnu-gcc -Og -fno-tree-coalesce-vars -fno-tree-fre testcase.c 
during RTL pass: combine
testcase.c: In function 'foo':
testcase.c:17:1: internal compiler error: in simplify_subreg, at
simplify-rtx.cc:7346
   17 | }
      | ^
0x78410d simplify_context::simplify_subreg(machine_mode, rtx_def*,
machine_mode, poly_int<1u, unsigned long>)
        /repo/gcc-trunk/gcc/simplify-rtx.cc:7346
0x136f624 simplify_context::simplify_subreg(machine_mode, rtx_def*,
machine_mode, poly_int<1u, unsigned long>)
        /repo/gcc-trunk/gcc/simplify-rtx.cc:7444
0x1370958 simplify_context::simplify_gen_subreg(machine_mode, rtx_def*,
machine_mode, poly_int<1u, unsigned long>)
        /repo/gcc-trunk/gcc/simplify-rtx.cc:7624
0xf6dbed lowpart_subreg(machine_mode, rtx_def*, machine_mode)
        /repo/gcc-trunk/gcc/rtl.h:3547
0xf6dbed gen_lowpart_common(machine_mode, rtx_def*)
        /repo/gcc-trunk/gcc/emit-rtl.cc:1617
0x22914bb gen_lowpart_for_combine
        /repo/gcc-trunk/gcc/combine.cc:11682
0x136ad76 simplify_context::simplify_unary_operation_1(rtx_code, machine_mode,
rtx_def*)
        /repo/gcc-trunk/gcc/simplify-rtx.cc:1243
0x136e44f simplify_context::simplify_unary_operation(rtx_code, machine_mode,
rtx_def*, machine_mode)
        /repo/gcc-trunk/gcc/simplify-rtx.cc:893
0x136e44f simplify_context::simplify_gen_unary(rtx_code, machine_mode,
rtx_def*, machine_mode)
        /repo/gcc-trunk/gcc/simplify-rtx.cc:360
0x136aaf0 simplify_context::simplify_unary_operation_1(rtx_code, machine_mode,
rtx_def*)
        /repo/gcc-trunk/gcc/simplify-rtx.cc:1232
0x136e44f simplify_context::simplify_unary_operation(rtx_code, machine_mode,
rtx_def*, machine_mode)
        /repo/gcc-trunk/gcc/simplify-rtx.cc:893
0x136e44f simplify_context::simplify_gen_unary(rtx_code, machine_mode,
rtx_def*, machine_mode)
        /repo/gcc-trunk/gcc/simplify-rtx.cc:360
0x136e5f8 simplify_context::simplify_truncation(machine_mode, rtx_def*,
machine_mode)
        /repo/gcc-trunk/gcc/simplify-rtx.cc:652
0x136fb0e simplify_context::simplify_subreg(machine_mode, rtx_def*,
machine_mode, poly_int<1u, unsigned long>)
        /repo/gcc-trunk/gcc/simplify-rtx.cc:7595
0x1370958 simplify_context::simplify_gen_subreg(machine_mode, rtx_def*,
machine_mode, poly_int<1u, unsigned long>)
        /repo/gcc-trunk/gcc/simplify-rtx.cc:7624
0x2291531 lowpart_subreg(machine_mode, rtx_def*, machine_mode)
        /repo/gcc-trunk/gcc/rtl.h:3547
0x2291531 gen_lowpart_for_combine
        /repo/gcc-trunk/gcc/combine.cc:11726
0x2288ee4 if_then_else_cond
        /repo/gcc-trunk/gcc/combine.cc:9357
0x2288fe5 if_then_else_cond
        /repo/gcc-trunk/gcc/combine.cc:9207
0x2288fe5 if_then_else_cond
        /repo/gcc-trunk/gcc/combine.cc:9207
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.

$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r12-8210-20220420174944-g6a4e9934545-checking-yes-rtl-df-extra-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/12.0.1/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
--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-r12-8210-20220420174944-g6a4e9934545-checking-yes-rtl-df-extra-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 12.0.1 20220421 (experimental) (GCC)

^ permalink raw reply	[flat|nested] 10+ messages in thread

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2022-04-21 10:47 [Bug rtl-optimization/105333] New: [10/11/12 Regression] ICE: in simplify_subreg, at simplify-rtx.cc:7346 with -Og -fno-tree-coalesce-vars -fno-tree-fre zsojka at seznam dot cz
2022-04-21 11:19 ` [Bug rtl-optimization/105333] " rguenth at gcc dot gnu.org
2022-04-21 12:38 ` [Bug rtl-optimization/105333] [10/11/12 Regression] ICE: in simplify_subreg, at simplify-rtx.cc:7346 with -Og -fno-tree-coalesce-vars -fno-tree-fre since r10-1094-g9919f5fe87a3def1 marxin at gcc dot gnu.org
2022-04-21 13:55 ` jakub at gcc dot gnu.org
2022-04-22 11:38 ` cvs-commit at gcc dot gnu.org
2022-04-22 11:39 ` [Bug rtl-optimization/105333] [10/11 " jakub at gcc dot gnu.org
2022-05-06 23:44 ` cvs-commit at gcc dot gnu.org
2022-05-09 11:26 ` [Bug rtl-optimization/105333] [10 " jakub at gcc dot gnu.org
2022-05-10  8:26 ` cvs-commit at gcc dot gnu.org
2022-05-10 10:29 ` jakub at gcc dot gnu.org

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