[Bug target/65914] New: [6 Regression] error: unrecognizable insn

["trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65914

            Bug ID: 65914
           Summary: [6 Regression] error: unrecognizable insn
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: trippels at gcc dot gnu.org
  Target Milestone: ---
              Host: powerpc64le-unknown-linux-gnu
            Target: powerpc64le-unknown-linux-gnu
             Build: powerpc64le-unknown-linux-gnu

Running the Boost testsuite on ppc64le shows:

trippels@gcc2-power8 status % g++ -O3 -c -std=c++14 unordered_set_test.ii
../libs/intrusive/test/unordered_set_test.cpp: In static member function
‘static void test_unordered_set<ValueTraits, CacheBegin, CompareHash,
Incremental>::test_rehash(std::vector<typename ValueTraits::value_type>&,
boost::move_detail::true_) [with ValueTraits =
boost::intrusive::mhtraits<boost::intrusive::testvalue<hooks<void*>, false>,
boost::intrusive::unordered_set_member_hook<boost::intrusive::void_pointer<void*>,
boost::intrusive::optimize_multikey<true>, void, void>,
&boost::intrusive::testvalue<hooks<void*>, false>::node_>; bool CacheBegin =
false; bool CompareHash = false; bool Incremental = true; typename
ValueTraits::value_type = boost::intrusive::testvalue<hooks<void*>, false>;
boost::move_detail::true_ = boost::move_detail::bool_<true>]’:
../libs/intrusive/test/unordered_set_test.cpp:448:1: error: unrecognizable
insn:
 }
 ^
(insn 72 71 73 2 (set (reg:V2DI 540 [ vect_cst_.26426 ])
        (vec_concat:V2DI (reg/f:DI 150 virtual-stack-vars [ D.668853 ])
            (reg:DI 541 [ D.668853 ])))
../boost/intrusive/detail/slist_node.hpp:55 -1
     (nil))
../libs/intrusive/test/unordered_set_test.cpp:448:1: internal compiler error:
in extract_insn, at recog.c:2341
0x109a7e33 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        ../../gcc/gcc/rtl-error.c:110
0x109a7eaf _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
        ../../gcc/gcc/rtl-error.c:118
0x1096d767 extract_insn(rtx_insn*)
        ../../gcc/gcc/recog.c:2341
0x106c98bb instantiate_virtual_regs_in_insn
        ../../gcc/gcc/function.c:1598
0x106c98bb instantiate_virtual_regs
        ../../gcc/gcc/function.c:1966
0x106c98bb execute
        ../../gcc/gcc/function.c:2015
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.

Reducing...
>From gcc-bugs-return-484835-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Apr 28 11:51:38 2015
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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/65915] New: [6 Regression] FAIL: gcc.target/i386/avx512f-vrndscalepd-2.c (internal compiler error)
Date: Tue, 28 Apr 2015 11:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?ide915

            Bug ID: 65915
           Summary: [6 Regression] FAIL:
                    gcc.target/i386/avx512f-vrndscalepd-2.c (internal
                    compiler error)
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
                CC: tocarip.intel at gmail dot com
  Target Milestone: ---

On x86-64, r222470 caused:

[hjl@gnu-ivb-1 gcc]$ ./xgcc -B./
/export/gnu/import/git/gcc-regression/gcc/gcc/testsuite/gcc.target/i386/avx512f-vrndscalepd-2.c
 -fpic -mcmodel=medium   -fno-diagnostics-show-caret -fdiagnostics-color=never
 -O2 -mavx512f  -S
/export/gnu/import/git/gcc-regression/gcc/gcc/testsuite/gcc.target/i386/avx512f-vrndscalepd-2.c:
In function \u2018test_512\u2019:
/export/gnu/import/git/gcc-regression/gcc/gcc/testsuite/gcc.target/i386/avx512f-vrndscalepd-2.c:101:1:
error: insn does not satisfy its constraints:
(insn 367 366 319 9 (set (reg:V2DF 53 xmm16 [ D.29386 ])
        (vec_merge:V2DF (vec_duplicate:V2DF (float:DF (reg:SI 2 cx [orig:96
D.29385 ] [96])))
            (reg:V2DF 53 xmm16 [ D.29386 ])
            (const_int 1 [0x1]))) 2191 {sse2_cvtsi2sd}
     (expr_list:REG_DEAD (reg:SI 2 cx [orig:96 D.29385 ] [96])
        (nil)))
/export/gnu/import/git/gcc-regression/gcc/gcc/testsuite/gcc.target/i386/avx512f-vrndscalepd-2.c:101:1:
internal compiler error: in extract_constrain_insn, at recog.c:2244
0xcf4a34 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        ../../../../gcc/gcc/rtl-error.c:110
0xcf4a94 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
        ../../../../gcc/gcc/rtl-error.c:121
0xca7059 extract_constrain_insn(rtx_insn*)
        ../../../../gcc/gcc/recog.c:2244
0xcb5847 copyprop_hardreg_forward_1
        ../../../../gcc/gcc/regcprop.c:793
0xcb704b execute
        ../../../../gcc/gcc/regcprop.c:1289
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
[hjl@gnu-ivb-1 gcc]$