https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117481
Bug ID: 117481
Summary: ICE: maximum number of generated reload insns per insn
achieved (90) with -O -mrvv-vector-bits=zvl
-march=rv64gcv -mabi=lp64e
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: riscv64-unknown-linux-gnu
Created attachment 59553
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59553&action=edit
reduced testcase
Compiler output:
$ riscv64-unknown-linux-gnu-gcc -O -mrvv-vector-bits=zvl -march=rv64gcv
-mabi=lp64e testcase.c
cc1: warning: LP64E ABI is marked for deprecation in GCC [-Wdeprecated]
cc1: note: if you need LP64E please notify the GCC project via PR116152
during RTL pass: reload
testcase.c: In function 'foo':
testcase.c:11:1: internal compiler error: maximum number of generated reload
insns per insn achieved (90)
11 | }
| ^
0x33b1bee internal_error(char const*, ...)
/repo/gcc-trunk/gcc/diagnostic-global-context.cc:518
0x15d066d lra_constraints(bool)
/repo/gcc-trunk/gcc/lra-constraints.cc:5405
0x15b6254 lra(_IO_FILE*, int)
/repo/gcc-trunk/gcc/lra.cc:2445
0x1561ddf do_reload
/repo/gcc-trunk/gcc/ira.cc:5977
0x1561ddf execute
/repo/gcc-trunk/gcc/ira.cc:6165
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.
$ riscv64-unknown-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-riscv64/bin/riscv64-unknown-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r15-4966-20241105195917-ge152a734337-checking-yes-rtl-df-extra-riscv64/bin/../libexec/gcc/riscv64-unknown-linux-gnu/15.0.0/lto-wrapper
Target: riscv64-unknown-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --with-isa-spec=2.2
--with-sysroot=/usr/riscv64-unknown-linux-gnu --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=riscv64-unknown-linux-gnu
--with-ld=/usr/bin/riscv64-unknown-linux-gnu-ld
--with-as=/usr/bin/riscv64-unknown-linux-gnu-as --disable-multilib
--enable-libsanitizer --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r15-4966-20241105195917-ge152a734337-checking-yes-rtl-df-extra-riscv64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.0.0 20241105 (experimental) (GCC)
