From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 0E0333858D3C; Mon, 11 Sep 2023 18:21:14 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 0E0333858D3C DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1694456474; bh=NYVmLlrVwFfhRNGBabgQCDmlnK0MeT+o1f87qxBp4V8=; h=From:To:Subject:Date:From; b=gxcrFEDa+8JqU8/1+t9P9l0D4Qdm+/ezB+DN5v1zkB1rGGWMKsOZWZgj30S7heqZG DA3dVDMcn4Gk5y9emPHgx0R2uJacfL6ovBnolQ0gjH8sZ2D3D502gQKKfjPC39rP/x UfRFdqo6sE2j3aYx4m0AEKXoN0rwwYBoTAmbb2yE= From: "jeremy.bennett at embecosm dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/111375] New: RISC-V vector Fortran: SEGV ICE during get_avl_or_vl_reg (vsetvl pass) Date: Mon, 11 Sep 2023 18:21:13 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Version: 14.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: jeremy.bennett at embecosm dot com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status bug_severity priority component assigned_to reporter target_milestone attachments.created Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111375 Bug ID: 111375 Summary: RISC-V vector Fortran: SEGV ICE during get_avl_or_vl_reg (vsetvl pass) Product: gcc Version: 14.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: jeremy.bennett at embecosm dot com Target Milestone: --- Created attachment 55878 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D55878&action=3Dedit Test case for the issue Found when building SPEC CPU 2017 621.wrf_s. The same problem appears to o= ccur in 627.cam4_s and 628.pop2_s Reproducer (test.f90): MODULE a CONTAINS SUBROUTINE b(KTE) REAL,DIMENSION(KTE) :: c,e,f,q LOGICAL ae DO af=3Dag,ah DO i=3Dai,aj CALL ak(al,i,af,am,an,d,g,c,q,e,f,h,r & ,e,f,s,ao,LTOP,ap,aq,ar,as,at,au,av,aw & ,ae,ax,ay,az,ba,bb,bc & ,d,be,bf,bg,bh,bi,ai,aj,ag,ah,KTS,KTE) ENDDO ENDDO END SUBROUTINE b SUBROUTINE ak(al,i,af,am,an,bj,bk & ,bl,bm,bn,t,h,u,e,f,s,ao,LTOP,ap & ,aq,ar,as,at,au,av,aw,ae & ,ax,a,b,c,d,bc & ,bd,be,bf,bg,bh,bi,ai,aj,ag,ah,KTS,KTE) REAL,DIMENSION(:) :: bl,bm,bn,t REAL,DIMENSION(:) :: e,f REAL,DIMENSION(KTE) :: v LOGICAL ae l : DO j=3D1,w DO k=3DLTOP,m IF(o>=3Dp)THEN n=3Dx() ENDIF ENDDO y : DO z=3D1,2 DO k=3DLTOP,m aa=3Dv(k)+aa ENDDO ab=3Daa DO k=3DKTS,m IF(k<=3Dac)ad=3Dk ENDDO IF(LCOR<=3Dad)THEN DO k=3DLCOR,ad v=3Dab ENDDO ENDIF ENDDO y ENDDO l END SUBROUTINE ak END MODULE a Compile with: riscv64-unknown-linux-gnu-gfortran -w -march=3Drv64gcv -mabi=3Dlp64d -c -Of= ast=20=20=20=20 -ftree-vectorize --param=3Driscv-autovec-preference=3Dscalable test.f90 Output is: during RTL pass: vsetvl test.f90:14:18: 14 | END SUBROUTINE b | ^ internal compiler error: in get_avl_or_vl_reg, at config/riscv/riscv-vsetvl.cc:2297 0x98b1e3 riscv_vector::vector_insn_info::get_avl_or_vl_reg() const /home/jeremy/gittrees/mustang/gcc/gcc/config/riscv/riscv-vsetvl.cc:= 2297 0x98b1e3 riscv_vector::vector_insn_info::get_avl_or_vl_reg() const /home/jeremy/gittrees/mustang/gcc/gcc/config/riscv/riscv-vsetvl.cc:= 2271 0x15f8d27 insert_vsetvl /home/jeremy/gittrees/mustang/gcc/gcc/config/riscv/riscv-vsetvl.cc:= 724 0x15f990d pass_vsetvl::commit_vsetvls() /home/jeremy/gittrees/mustang/gcc/gcc/config/riscv/riscv-vsetvl.cc:= 3615 0x15f9bc1 pass_vsetvl::pre_vsetvl() /home/jeremy/gittrees/mustang/gcc/gcc/config/riscv/riscv-vsetvl.cc:= 3728 0x15fa908 pass_vsetvl::lazy_vsetvl() /home/jeremy/gittrees/mustang/gcc/gcc/config/riscv/riscv-vsetvl.cc:= 4358 0x15faa11 pass_vsetvl::execute(function*) /home/jeremy/gittrees/mustang/gcc/gcc/config/riscv/riscv-vsetvl.cc:= 4393 0x15faa11 pass_vsetvl::execute(function*) /home/jeremy/gittrees/mustang/gcc/gcc/config/riscv/riscv-vsetvl.cc:= 4374 Please submit a full bug report, with preprocessed source (by using -freport-bug). Please include the complete backtrace with any bug report. See for instructions. System information =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Using built-in specs. COLLECT_GCC=3Driscv64-unknown-linux-gnu-gfortran COLLECT_LTO_WRAPPER=3D/home/jeremy/gittrees/mustang/install/libexec/gcc/ris= cv64-unknown-linux-gnu/14.0.0/lto-wrapper Target: riscv64-unknown-linux-gnu Configured with: /home/jeremy/gittrees/mustang/gcc/configure --target=3Driscv64-unknown-linux-gnu --prefix=3D/home/jeremy/gittrees/mustang/install --with-sysroot=3D/home/jeremy/gittrees/mustang/install/sysroot --with-pkgversion=3Dgf3ba57163ce --with-system-zlib --enable-shared --enabl= e-tls --enable-languages=3Dc,c++,fortran --disable-libmudflap --disable-libssp --disable-libquadmath --disable-libsanitizer --disable-nls --disable-bootst= rap --src=3D/home/jeremy/gittrees/mustang/gcc --enable-multilib --with-abi=3Dlp= 64d --with-arch=3Drv64gc --with-tune=3D --with-isa-spec=3D20191213 'CFLAGS_FOR_= TARGET=3D-O2 -mcmodel=3Dmedany' 'CXXFLAGS_FOR_TARGET=3D-O2 -mcmodel=3Dmedany' Thread model: posix Supported LTO compression algorithms: zlib gcc version 14.0.0 20230908 (experimental) (gf3ba57163ce)=