[Bug rtl-optimization/84157] New: [8 Regression] [nvptx] ICE: RTL check: expected code 'reg', have 'lshiftrt'

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84157

            Bug ID: 84157
           Summary: [8 Regression] [nvptx] ICE: RTL check: expected code
                    'reg', have 'lshiftrt'
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

$ gcc -O2 -c lrand48.c
during RTL pass: combine
lrand48.c: In function ‘_lrand48_r’:
lrand48.c:985:1: internal compiler error: RTL check: expected code 'reg', have
'lshiftrt' in rhs_regno, at rtl.h:1891
 }
 ^
0x554b79 rtl_check_failed_code1(rtx_def const*, rtx_code, char const*, int,
char const*)
        source-gcc/gcc/rtl.c:846
0x10e9e40 rhs_regno
        source-gcc/gcc/rtl.h:1891
0x10e9e40 change_zero_ext
        source-gcc/gcc/combine.c:11486
0x10ea547 recog_for_combine
        source-gcc/gcc/combine.c:11601
0x111431a try_combine
        source-gcc/gcc/combine.c:3595
0x111f865 combine_instructions
        source-gcc/gcc/combine.c:1299
0x111f865 rest_of_handle_combine
        source-gcc/gcc/combine.c:14876
0x111f865 execute
        source-gcc/gcc/combine.c:14921
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