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
