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[Bug target/79909] New: ICE error: invalid rtl sharing found in the insn on ppc64le


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79909

            Bug ID: 79909
           Summary: ICE error: invalid rtl sharing found in the insn on
                    ppc64le
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
  Target Milestone: ---
            Target: ppc64le-linux-gnu

We ICE on:

$ ppc64le-linux-gnu-g++
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/compat/decimal/pass-5_x.C
-mxl-compat -O
In file included from
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/compat/decimal/pass-5_x.C:5:0:
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/compat/decimal/pass_x.h: In
function ‘void test2_d128(dec128, dec128, dec128, dec128, dec128, dec128,
dec128, dec128)’:
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/compat/decimal/pass_x.h:33:1:
error: invalid rtl sharing found in the insn
 }        \
 ^
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/compat/decimal/pass_x.h:149:1:
note: in expansion of macro ‘T’
 T(d128, dec128, (dec128)3.5DL)
 ^
(call_insn 74 72 0 2 (parallel [
            (call (mem:SI (symbol_ref:DI
("_Z8testd128DeDeDeDeDeDeDeDeDeDeDeDeDeDeDeDe") [flags 0x41] <function_decl
0x7fef057f3b00 testd128>) [0 testd128 S4 A8])
                (const_int 256 [0x100]))
            (clobber (reg:DI 65 lr))
        ])
"/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/compat/decimal/pass_x.h":149
667 {*call_nonlocal_aixdi}
     (expr_list:REG_CALL_DECL (symbol_ref:DI
("_Z8testd128DeDeDeDeDeDeDeDeDeDeDeDeDeDeDeDe") [flags 0x41] <function_decl
0x7fef057f3b00 testd128>)
        (expr_list:REG_DEAD (reg:TD 34 2)
            (expr_list:REG_DEAD (reg:TD 36 4)
                (expr_list:REG_DEAD (reg:TD 38 6)
                    (expr_list:REG_DEAD (reg:TD 40 8)
                        (expr_list:REG_DEAD (reg:TD 42 10)
                            (expr_list:REG_DEAD (reg:TD 44 12)
                                (nil))))))))
    (expr_list (use (reg:DI 2 2))
        (expr_list:TD (use (reg:TD 34 2))
            (expr_list:TD (use (reg:TD 36 4))
                (expr_list:TD (use (reg:TD 38 6))
                    (expr_list:TD (use (reg:TD 40 8))
                        (expr_list (use (reg:TD 42 10))
                            (expr_list (use (reg:TD 44 12))
                                (expr_list:TD (use (mem:TD (plus:DI (plus:DI
(reg/f:DI 1 1)
                                                    (const_int 32 [0x20]))
                                                (const_int 64 [0x40])) [0  S16
A64]))
                                    (expr_list:TD (use (mem:TD (plus:DI
(plus:DI (reg/f:DI 1 1)
                                                        (const_int 32 [0x20]))
                                                    (const_int 80 [0x50])) [0 
S16 A64]))
                                        (expr_list:TD (use (mem:TD (plus:DI
(plus:DI (reg/f:DI 1 1)
                                                            (const_int 32
[0x20]))
                                                        (const_int 96 [0x60]))
[0  S16 A64]))
                                            (expr_list:TD (use (mem:TD (plus:DI
(plus:DI (reg/f:DI 1 1)
                                                                (const_int 32
[0x20]))
                                                            (const_int 112
[0x70])) [0  S16 A64]))
                                                (expr_list:TD (use (mem:TD
(plus:DI (plus:DI (reg/f:DI 1 1)
                                                                    (const_int
32 [0x20]))
                                                                (const_int 128
[0x80])) [0  S16 A64]))
                                                    (expr_list:TD (use (mem:TD
(plus:DI (plus:DI (reg/f:DI 1 1)
                                                                       
(const_int 32 [0x20]))
                                                                    (const_int
144 [0x90])) [0  S16 A64]))
                                                        (expr_list:TD (use
(mem:TD (plus:DI (plus:DI (reg/f:DI 1 1)
                                                                           
(const_int 32 [0x20]))
                                                                       
(const_int 160 [0xa0])) [0  S16 A64]))
                                                            (expr_list:TD (use
(mem:TD (plus:DI (plus:DI (reg/f:DI 1 1)
                                                                               
(const_int 32 [0x20]))
                                                                           
(const_int 176 [0xb0])) [0  S16 A64]))
                                                                (expr_list:TD
(use (mem:TD (plus:DI (plus:DI (reg/f:DI 1 1)
                                                                               
    (const_int 32 [0x20]))
                                                                               
(const_int 192 [0xc0])) [0  S16 A64]))
                                                                   
(expr_list:TD (use (mem:TD (plus:DI (plus:DI (reg/f:DI 1 1)
                                                                               
        (const_int 32 [0x20]))
                                                                               
    (const_int 208 [0xd0])) [0  S16 A64]))
                                                                       
(expr_list:TD (use (mem:TD (plus:DI (plus:DI (reg/f:DI 1 1)
                                                                               
            (const_int 32 [0x20]))
                                                                               
        (const_int 224 [0xe0])) [0  S16 A64]))
                                                                           
(expr_list:TD (use (mem:TD (plus:DI (plus:DI (reg/f:DI 1 1)
                                                                               
                (const_int 32 [0x20]))
                                                                               
            (const_int 240 [0xf0])) [0  S16 A64]))
                                                                               
(nil)))))))))))))))))))))
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/compat/decimal/pass_x.h:33:1:
error: shared rtx
 }        \
 ^
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/compat/decimal/pass_x.h:149:1:
note: in expansion of macro ‘T’
 T(d128, dec128, (dec128)3.5DL)
 ^
(plus:DI (reg/f:DI 1 1)
    (const_int 32 [0x20]))
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/compat/decimal/pass_x.h:33:1:
internal compiler error: internal consistency failure
 }        \
 ^
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/compat/decimal/pass_x.h:149:1:
note: in expansion of macro ‘T’
 T(d128, dec128, (dec128)3.5DL)
 ^
0xa02b7b verify_rtx_sharing
        .././../gcc/emit-rtl.c:2774
0xa02a91 verify_rtx_sharing
        .././../gcc/emit-rtl.c:2789
0xa02a91 verify_rtx_sharing
        .././../gcc/emit-rtl.c:2789
0xa02a91 verify_rtx_sharing
        .././../gcc/emit-rtl.c:2789
0xa02a91 verify_rtx_sharing
        .././../gcc/emit-rtl.c:2789
0xa02a91 verify_rtx_sharing
        .././../gcc/emit-rtl.c:2789
0xa02a91 verify_rtx_sharing
        .././../gcc/emit-rtl.c:2789
0xa02a91 verify_rtx_sharing
        .././../gcc/emit-rtl.c:2789
0xa02a91 verify_rtx_sharing
        .././../gcc/emit-rtl.c:2789
0xa02a91 verify_rtx_sharing
        .././../gcc/emit-rtl.c:2789
0xa02a91 verify_rtx_sharing
        .././../gcc/emit-rtl.c:2789
0xa02a91 verify_rtx_sharing
        .././../gcc/emit-rtl.c:2789
0xa02a91 verify_rtx_sharing
        .././../gcc/emit-rtl.c:2789
0xa075e7 verify_rtl_sharing()
        .././../gcc/emit-rtl.c:2883
0xc90222 execute_function_todo
        .././../gcc/passes.c:1983
0xc90c05 execute_todo
        .././../gcc/passes.c:2016

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