https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111395
Bug ID: 111395 Summary: RISC-V Vector Fortran: ICE in 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 55887 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55887&action=edit Reproducer Found because of failure of SPEC CPU 2017 621_wrf_s to compile. This appears to be related to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=11137, which is now resolved. Reproducer (test.f90): MODULE a REAL b CONTAINS SUBROUTINE c(d,KTE) REAL,DIMENSION(KTE) :: d,e,f,g REAL,DIMENSION(KTE) :: h i : DO j=1,b z=k DO l=m,n IF(o>=p)THEN IF(l<L0)THEN q=z/0 ENDIF e=q f=EXP(r ) ENDIF ENDDO s : DO t=1,2 DO l=m,u v=v+l ENDDO IF(w<=x)THEN DO l=w,x g=y ENDDO ENDIF ENDDO s aa=v ab=ac/aa k=ad/ab ENDDO i IF(ae>af)THEN DO l=m,n d=h ENDDO ENDIF END SUBROUTINE c END MODULE a Compile with: riscv64-unknown-linux-gnu-gfortran -w -march=rv64gcv -mabi=lp64d -c -Ofast \ -ftree-vectorize --param=riscv-autovec-preference=scalable test.f90 Output: during RTL pass: vsetvl test.f90:37:18: 37 | END SUBROUTINE c | ^ internal compiler error: in get_avl_or_vl_reg, at config/riscv/riscv-vsetvl.cc:2297 0x9a24e5 riscv_vector::vector_insn_info::get_avl_or_vl_reg() const /home/jeremy/gittrees/mustang/gcc/gcc/config/riscv/riscv-vsetvl.cc:2297 0x9a24e5 riscv_vector::vector_insn_info::get_avl_or_vl_reg() const /home/jeremy/gittrees/mustang/gcc/gcc/config/riscv/riscv-vsetvl.cc:2271 0x16102f7 insert_vsetvl /home/jeremy/gittrees/mustang/gcc/gcc/config/riscv/riscv-vsetvl.cc:724 0x1610edd pass_vsetvl::commit_vsetvls() /home/jeremy/gittrees/mustang/gcc/gcc/config/riscv/riscv-vsetvl.cc:3615 0x1611191 pass_vsetvl::pre_vsetvl() /home/jeremy/gittrees/mustang/gcc/gcc/config/riscv/riscv-vsetvl.cc:3728 0x1611ed8 pass_vsetvl::lazy_vsetvl() /home/jeremy/gittrees/mustang/gcc/gcc/config/riscv/riscv-vsetvl.cc:4360 0x1612031 pass_vsetvl::execute(function*) /home/jeremy/gittrees/mustang/gcc/gcc/config/riscv/riscv-vsetvl.cc:4395 0x1612031 pass_vsetvl::execute(function*) /home/jeremy/gittrees/mustang/gcc/gcc/config/riscv/riscv-vsetvl.cc:4376 Please submit a full bug report, with preprocessed source (by using -freport-bug). Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. System information ------------------ Using built-in specs. COLLECT_GCC=riscv64-unknown-linux-gnu-gcc COLLECT_LTO_WRAPPER=/home/jeremy/gittrees/mustang/install/libexec/gcc/riscv64-unknown-linux-gnu/14.0.0/lto-wrapper Target: riscv64-unknown-linux-gnu Configured with: /home/jeremy/gittrees/mustang/gcc/configure --target=riscv64-unknown-linux-gnu --prefix=/home/jeremy/gittrees/mustang/install --with-sysroot=/home/jeremy/gittrees/mustang/install/sysroot --with-pkgversion=g35f498d8dfc --with-system-zlib --enable-shared --enable-tls --enable-languages=c,c++,fortran --disable-libmudflap --disable-libssp --disable-libquadmath --disable-libsanitizer --disable-nls --disable-bootstrap --src=/home/jeremy/gittrees/mustang/gcc --enable-multilib --with-abi=lp64d --with-arch=rv64gc --with-tune= --with-isa-spec=20191213 'CFLAGS_FOR_TARGET=-O2 -mcmodel=medany' 'CXXFLAGS_FOR_TARGET=-O2 -mcmodel=medany' Thread model: posix Supported LTO compression algorithms: zlib gcc version 14.0.0 20230912 (experimental) (g35f498d8dfc) Tool chain built with component commits: Repository SHA-1 hash (commit ID) ---------- ---------------------- gcc 35f498d8dfc8e579eaba2ff2d2b96769c632fd58 binutils-gdb 318d3bda5cad124bd11eebb0349d0f183ba625b1 glibc 073edbdfabaad4786e974a451efe4b6b3f7a5a61