https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104853
--- Comment #15 from rvalue <i at rvalue dot moe> ---
Hi, Kito:
I've tried these patches and found that it doesn't work with isa-spec
20190608/20191213.
Release 11.2.0 with following patches applied: 9871d39f752b, f41871dfdbd9,
f049717d8d50, 330aff0a9f7b, fa21fcfb6758
Verbose output:
$ cat > test.c
int main(){
asm volatile("fence.i" ::: "memory");
}
$ gcc test.c -o test -v -march=rv64gc -misa-spec=20191213
Using built-in specs.
COLLECT_GCC=/usr/sbin/gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/riscv64-unknown-linux-gnu/11.2.0/lto-wrapper
Target: riscv64-unknown-linux-gnu
Configured with: /build/gcc/src/gcc/configure
--enable-languages=c,c++,fortran,go,lto,objc,obj-c++,d --enable-bootstrap
--prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man
--infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/
--with-linker-hash-style=gnu --with-system-zlib --enable-__cxa_atexit
--enable-cet=auto --enable-checking=release --enable-clocale=gnu
--enable-default-pie --enable-default-ssp --enable-gnu-indirect-function
--enable-gnu-unique-object --enable-linker-build-id --enable-lto
--disable-multilib --enable-plugin --enable-shared --enable-threads=posix
--disable-libssp --disable-libstdcxx-pch --disable-werror
--enable-link-serialization=1 gdc_include_dir=/usr/include/dlang/gdc
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 11.2.0 (GCC)
COLLECT_GCC_OPTIONS='-o' 'test' '-v' '-march=rv64gc' '-misa-spec=20191213'
'-mabi=lp64d' '-march=rv64imafdc'
/usr/lib/gcc/riscv64-unknown-linux-gnu/11.2.0/cc1 -quiet -v test.c -quiet
-dumpbase test.c -dumpbase-ext .c -march=rv64gc -misa-spec=20191213 -mabi=lp64d
-march=rv64imafdc -version -o /tmp/ccQTUxnc.s
GNU C17 (GCC) version 11.2.0 (riscv64-unknown-linux-gnu)
compiled by GNU C version 11.2.0, GMP version 6.2.1, MPFR version
4.1.0-p13, MPC version 1.2.1, isl version isl-0.24-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory
"/usr/lib/gcc/riscv64-unknown-linux-gnu/11.2.0/../../../../riscv64-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc/riscv64-unknown-linux-gnu/11.2.0/include
/usr/local/include
/usr/lib/gcc/riscv64-unknown-linux-gnu/11.2.0/include-fixed
/usr/include
End of search list.
GNU C17 (GCC) version 11.2.0 (riscv64-unknown-linux-gnu)
compiled by GNU C version 11.2.0, GMP version 6.2.1, MPFR version
4.1.0-p13, MPC version 1.2.1, isl version isl-0.24-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 7a7a4553dc5ab0b4f8fc26761070a0ed
COLLECT_GCC_OPTIONS='-o' 'test' '-v' '-march=rv64gc' '-misa-spec=20191213'
'-mabi=lp64d' '-march=rv64imafdc'
as -v --traditional-format -fpic -march=rv64gc -march=rv64imafdc -mabi=lp64d
-misa-spec=20191213 -o /tmp/cc2my6Or.o /tmp/ccQTUxnc.s
GNU assembler version 2.38 (riscv64-unknown-linux-gnu) using BFD version (GNU
Binutils) 2.38
test.c: Assembler messages:
test.c:2: Error: unrecognized opcode `fence.i'
