[Bug target/93333] New: ICE: RTL check: expected code 'const_int', have 'and' in riscv_rtx_costs, at config/riscv/riscv.c:1645

[zsojka at seznam dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93333

            Bug ID: 93333
           Summary: ICE: RTL check: expected code 'const_int', have 'and'
                    in riscv_rtx_costs, at config/riscv/riscv.c:1645
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Keywords: ice-checking, ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zsojka at seznam dot cz
  Target Milestone: ---
              Host: x86_64-pc-linux-gnu
            Target: riscv64-unknown-linux-gnu

Created attachment 47684
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47684&action=edit
reduced testcase

RTL checking might be needed to reproduce this.

Compiler output:
$ riscv64-unknown-linux-gnu-gcc -O2 testcase.c
during RTL pass: combine
testcase.c: In function 'foo':
testcase.c:8:1: internal compiler error: RTL check: expected code 'const_int',
have 'and' in riscv_rtx_costs, at config/riscv/riscv.c:1645
    8 | }
      | ^
0x6ce0f9 rtl_check_failed_code1(rtx_def const*, rtx_code, char const*, int,
char const*)
        /repo/gcc-trunk/gcc/rtl.c:879
0x7979c1 riscv_rtx_costs
        /repo/gcc-trunk/gcc/config/riscv/riscv.c:1645
0xe3d427 rtx_cost(rtx_def*, machine_mode, rtx_code, int, bool)
        /repo/gcc-trunk/gcc/rtlanal.c:4279
0x14b56bc set_src_cost
        /repo/gcc-trunk/gcc/rtl.h:2932
0x14b56bc make_extraction
        /repo/gcc-trunk/gcc/combine.c:7980
0x14b9438 make_compound_operation_int
        /repo/gcc-trunk/gcc/combine.c:8194
0x14b9438 make_compound_operation(rtx_def*, rtx_code)
        /repo/gcc-trunk/gcc/combine.c:8510
0x14be356 simplify_set
        /repo/gcc-trunk/gcc/combine.c:7031
0x14be356 combine_simplify_rtx
        /repo/gcc-trunk/gcc/combine.c:6441
0x14c278f subst
        /repo/gcc-trunk/gcc/combine.c:5720
0x14c49d4 try_combine
        /repo/gcc-trunk/gcc/combine.c:3479
0x14cd56a combine_instructions
        /repo/gcc-trunk/gcc/combine.c:1442
0x14cd56a rest_of_handle_combine
        /repo/gcc-trunk/gcc/combine.c:15059
0x14cd56a execute
        /repo/gcc-trunk/gcc/combine.c:15104
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

The failing code is:
1643:    case ZERO_EXTRACT:
1644:      /* This is an SImode shift.  */
1645:      if (outer_code == SET && (INTVAL (XEXP (x, 2)) > 0)
1646:     && (INTVAL (XEXP (x, 1)) + INTVAL (XEXP (x, 2)) == 32))
1647:   {
1648:     *total = COSTS_N_INSNS (SINGLE_SHIFT_COST);
1649:     return true;
1650:   }
1651:      return false;


$ riscv64-unknown-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-riscv64/bin/riscv64-unknown-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-20200120111030-92ce93c743b-checking-yes-rtl-df-extra-riscv64/bin/../libexec/gcc/riscv64-unknown-linux-gnu/10.0.1/lto-wrapper
Target: riscv64-unknown-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
--with-sysroot=/usr/riscv64-unknown-linux-gnu --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=riscv64-unknown-linux-gnu
--with-ld=/usr/bin/riscv64-unknown-linux-gnu-ld
--with-as=/usr/bin/riscv64-unknown-linux-gnu-as --disable-multilib
--disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-20200120111030-92ce93c743b-checking-yes-rtl-df-extra-riscv64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 10.0.1 20200120 (experimental) (GCC)