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From: "tschwinge at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/112313] New: [14 Regression] GCN target
 'gcc.dg/pr111082.c' ICE, 'during RTL pass: vregs': 'error: unrecognizable
 insn'
Date: Tue, 31 Oct 2023 11:54:43 +0000
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X-Bugzilla-Type: new
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: target
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: ice-on-valid-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: tschwinge at gcc dot gnu.org
X-Bugzilla-Status: UNCONFIRMED
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X-Bugzilla-Priority: P3
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112313

            Bug ID: 112313
           Summary: [14 Regression] GCN target 'gcc.dg/pr111082.c' ICE,
                    'during RTL pass: vregs': 'error: unrecognizable insn'
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: tschwinge at gcc dot gnu.org
                CC: ams at gcc dot gnu.org, jules at gcc dot gnu.org
  Target Milestone: ---
            Target: GCN

(Assuming my tacking is to be believed) something in Git commit
r14-2060-gad5ab848cc487b3f7fd82c7cb3c408747bd10422..r14-3575-g7f2ed06ddc825=
e8a4e0edfd1d66b5156e6dc1d34
triggers a new GCN target ICE (tested '-march=3Dgfx90a'):

    [...]/gcc/testsuite/gcc.dg/pr111082.c: In function 'minarray2':
    [...]/gcc/testsuite/gcc.dg/pr111082.c:10:1: error: unrecognizable insn:
    (insn 10 9 11 2 (set (reg:V2DI 433)
            (smin:V2DI (reg:V2DI 434)
                (reg:V2DI 430))) -1
         (nil))
    during RTL pass: vregs
    [...]/gcc/testsuite/gcc.dg/pr111082.c:10:1: internal compiler error: in
extract_insn, at recog.cc:2791
    0x74b91f _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
            [...]/gcc/rtl-error.cc:108
    0x74b9a0 _fatal_insn_not_found(rtx_def const*, char const*, int, char
const*)
            [...]/gcc/rtl-error.cc:116
    0xed182e extract_insn(rtx_insn*)
            [...]/gcc/recog.cc:2791
    0xb42cfc instantiate_virtual_regs_in_insn
            [...]/gcc/function.cc:1610
    0xb42cfc instantiate_virtual_regs
            [...]/gcc/function.cc:1983
    0xb42cfc execute
            [...]/gcc/function.cc:2030=