[Bug target/71733] New: ICE in vmx test cases with -mcpu=power9

[acsawdey at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71733

            Bug ID: 71733
           Summary: ICE in vmx test cases with -mcpu=power9
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: acsawdey at gcc dot gnu.org
                CC: bergner at gcc dot gnu.org, wschmidt at gcc dot gnu.org
  Target Milestone: ---
            Target: powerpc64le-linux

Created attachment 38817
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38817&action=edit
preprocessed test case

tested against 237922:

genoa 8839 -> /home/sawdey/src/gcc/trunk2/build/gcc/xgcc
-B/home/sawdey/src/gcc/trunk2/build/gcc/ vmx_1b-04.i -mcpu=power9
-fno-diagnostics-show-caret -fdiagnostics-color=never -O0 -maltivec
-mabi=altivec -std=gnu99 -mno-vsx -lm -o ./1b-04.exe
/home/sawdey/src/gcc/trunk/gcc/gcc/testsuite/gcc.dg/vmx/1b-04.c: In function
âmainâ:
/home/sawdey/src/gcc/trunk/gcc/gcc/testsuite/gcc.dg/vmx/1b-04.c:7:1: error:
insn does not satisfy its constraints:
(insn 20 5 31 (set (mem/c:V16QI (plus:DI (reg/f:DI 31 31)
                (const_int 64 [0x40])) [0  S16 A128])
        (reg:V16QI 77 0 [157]))
/home/sawdey/src/gcc/trunk/gcc/gcc/testsuite/gcc.dg/vmx/1b-04.c:5 1205
{*altivec_movv16qi}
     (nil))
/home/sawdey/src/gcc/trunk/gcc/gcc/testsuite/gcc.dg/vmx/1b-04.c:7:1: internal
compiler error: in extract_constrain_insn_cached, at recog.c:2223
0x10833bf3 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        ../../trunk/gcc/rtl-error.c:108
0x10833c57 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
        ../../trunk/gcc/rtl-error.c:119
0x107fa273 extract_constrain_insn_cached(rtx_insn*)
        ../../trunk/gcc/recog.c:2223
0x10e15327 insn_default_length(rtx_insn*)
        ../../trunk/gcc/config/rs6000/rs6000.md:6424
0x104da113 shorten_branches(rtx_insn*)
        ../../trunk/gcc/final.c:1184
0x104da3d3 rest_of_handle_shorten_branches
        ../../trunk/gcc/final.c:4537
0x104da3d3 execute
        ../../trunk/gcc/final.c:4566