[Bug target/82674] New: ICE with -fstack-clash-protection

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82674

            Bug ID: 82674
           Summary: ICE with -fstack-clash-protection
           Product: gcc
           Version: unknown
            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
                CC: bergner at gcc dot gnu.org, segher at gcc dot gnu.org,
                    wschmidt at gcc dot gnu.org
  Target Milestone: ---
              Host: x86_64-pc-linux-gnu
            Target: ppc64-linux-gnu

Following ICEs:

$ ./xgcc -B.
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/tree-ssa/pr23848-1.c --param
stack-clash-protection-probe-interval=16 -fstack-clash-protection
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/tree-ssa/pr23848-1.c: In
function ‘foo1’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/tree-ssa/pr23848-1.c:12:1:
error: unrecognizable insn:
 }
 ^
(insn 39 69 40 5 (parallel [
            (set (mem:DI (plus:DI (reg/f:DI 1 1)
                        (const_int -65536 [0xffffffffffff0000])) [0  S8 A8])
                (reg:DI 144))
            (set (reg/f:DI 1 1)
                (plus:DI (reg/f:DI 1 1)
                    (const_int -65536 [0xffffffffffff0000])))
        ])
"/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/tree-ssa/pr23848-1.c":9 -1
     (nil))
during RTL pass: vregs
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/tree-ssa/pr23848-1.c:12:1:
internal compiler error: in extract_insn, at recog.c:2305
0xe90dbd _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        ../../gcc/rtl-error.c:108
0xe90dfe _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
        ../../gcc/rtl-error.c:116
0xe3a661 extract_insn(rtx_insn*)
        ../../gcc/recog.c:2305
0xb2fcac instantiate_virtual_regs_in_insn
        ../../gcc/function.c:1639
0xb31172 instantiate_virtual_regs
        ../../gcc/function.c:1959
0xb3123c execute
        ../../gcc/function.c:2008