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From: "seeson at pku dot edu.cn" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/109457] New: %z[asmSymbolicName] in AssemblerTemplate fails to compile Date: Sun, 09 Apr 2023 16:37:28 +0000 [thread overview] Message-ID: <bug-109457-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109457 Bug ID: 109457 Summary: %z[asmSymbolicName] in AssemblerTemplate fails to compile Product: gcc Version: 11.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: seeson at pku dot edu.cn Target Milestone: --- Created attachment 54820 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54820&action=edit The code that fails to compile, with the .ii and .s files saved. Ubuntu 22.04.2 LTS g++ (Ubuntu 11.3.0-1ubuntu1~22.04) 11.3.0 When using modifier `z` on `[asmSymbolicName]`, the code won't compile. ---------------------------------------- // the one's complement addition on x86_64 template<class T> inline T onec_add(T a, T b) { asm( "add%z[b]\t%[b], %[a]" "\n\tadc%z[b]\t$0, %[a]" : [a]"+g"(a) // inputs : [b]"g"(b) // outputs : "cc" // clobbers ); return a; } ---------------------------------------- $ g++ -Wall -g -Og test.cpp -o test test.cpp: In function ‘int main()’: test.cpp:42:3: error: invalid 'asm': invalid operand type used with operand code 'Z' 42 | asm( "add%z[b]\t%[b], %[a]" | ^~~ test.cpp:42:3: error: invalid 'asm': invalid operand type used with operand code 'Z' test.cpp:42:3: error: invalid 'asm': invalid operand type used with operand code 'Z' 42 | asm( "add%z[b]\t%[b], %[a]" | ^~~ test.cpp:42:3: error: invalid 'asm': invalid operand type used with operand code 'Z' test.cpp:42:3: error: invalid 'asm': invalid operand type used with operand code 'Z' 42 | asm( "add%z[b]\t%[b], %[a]" | ^~~ test.cpp:42:3: error: invalid 'asm': invalid operand type used with operand code 'Z' test.cpp:42:3: error: invalid 'asm': invalid operand type used with operand code 'Z' 42 | asm( "add%z[b]\t%[b], %[a]" | ^~~ test.cpp:42:3: error: invalid 'asm': invalid operand type used with operand code 'Z' ---------------------------------------- Unexpectedly, the error report says the wrong modifier is 'Z', but what I use is actually 'z'. I believe that something must go wrong when GCC addresses the modifier 'z' followed by [asmSymbolicName]. I have pasted the error reporting of g++ in the code attached. Above all, thanks a lot for the great compilers. ---------------------------------------- $ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/11/lto-wrapper OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa OFFLOAD_TARGET_DEFAULT=1 Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu 11.3.0-1ubuntu1~22.04' --with-bugurl=file:///usr/share/doc/gcc-11/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++,m2 --prefix=/usr --with-gcc-major-version-only --program-suffix=-11 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib --enable-libphobos-checking=release --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch --disable-werror --enable-cet --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none=/build/gcc-11-xKiWfi/gcc-11-11.3.0/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/gcc-11-xKiWfi/gcc-11-11.3.0/debian/tmp-gcn/usr --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-build-config=bootstrap-lto-lean --enable-link-serialization=2 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 11.3.0 (Ubuntu 11.3.0-1ubuntu1~22.04)
next reply other threads:[~2023-04-09 16:37 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-04-09 16:37 seeson at pku dot edu.cn [this message] 2023-04-09 16:48 ` [Bug target/109457] " pinskia at gcc dot gnu.org 2023-04-09 17:08 ` seeson at pku dot edu.cn 2023-04-09 17:09 ` pinskia at gcc dot gnu.org 2023-04-09 17:11 ` pinskia at gcc dot gnu.org 2023-04-09 17:14 ` pinskia at gcc dot gnu.org 2023-04-09 17:25 ` seeson at pku dot edu.cn 2023-04-09 17:26 ` pinskia at gcc dot gnu.org
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