[Bug target/78614] [7 Regression] ICE error: invalid rtl sharing found in the insn (verify_rtx_sharing) gcc/emit-rtl.c:2743

[amodra at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78614

--- Comment #16 from Alan Modra <amodra at gmail dot com> ---
The patch referenced in comment #15 alone, ie. without
https://gcc.gnu.org/ml/gcc-patches/2016-11/msg03117.html, results in an
--enable-checking=yes,rtl bootstrap failure on powerpc64le-linux.

/home/amodra/src/gcc-pr78614/libgcc/config/rs6000/extendkftf2-sw.c: In function
'__extendkftf2':
/home/amodra/src/gcc-pr78614/libgcc/config/rs6000/extendkftf2-sw.c:53:1: error:
invalid rtl sharing found in the insn
 }
 ^
(insn/f 95 94 96 2 (parallel [
            (set (mem/c:V4SI (plus:DI (reg/f:DI 1 1)
                        (reg:DI 0 0)) [6  S16 A8])
                (reg:V4SI 108 31))
            (unspec [
                    (const_int 0 [0])
                ] UNSPEC_STVX)
        ])
"/home/amodra/src/gcc-pr78614/libgcc/config/rs6000/extendkftf2-sw.c":48 -1
     (expr_list:REG_FRAME_RELATED_EXPR (parallel [
                (set/f (mem/c:V4SI (plus:DI (reg/f:DI 1 1)
                            (const_int 32 [0x20])) [6  S16 A8])
                    (reg:V4SI 108 31))
                (unspec [
                        (const_int 0 [0])
                    ] UNSPEC_STVX)
            ])
        (nil)))