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inlineassembly
2010 Jul 23
3
[LLVMdev] warnings in inline assembly with used labels and -Wunused-label
...round to avoid these warnings (without turning off -Wunused-label)?
Here is a small sample code that exhibits the issue:
int main()
{
__asm__
{
MyLabel:
sub ebx,8
jg MyLabel
}
return 0;
}
Compile with llvm-gcc 4.2 on MacOSX 10.6:
llvm-gcc-4.2 -arch i386 -Wunused-label -fasm-blocks -o inlineassembly_llvm inlineassembly.c
inlineassembly.c: In function ‘main’:
inlineassembly.c:7: warning: label ‘LASM$MyLabel’ defined but not used
Compile with gcc 4.2 on MacOSX 10.6:
gcc -arch i386 -Wunused-label -fasm-blocks -o inlineassembly inlineassembly.c
no warnings
Thanks,
Alexandre
2010 Jul 23
0
[LLVMdev] warnings in inline assembly with used labels and -Wunused-label
...mple code that exhibits the issue:
>
> int main()
> {
> __asm__
> {
> MyLabel:
> sub ebx,8
> jg MyLabel
> }
>
> return 0;
> }
>
>
> Compile with llvm-gcc 4.2 on MacOSX 10.6:
>
> llvm-gcc-4.2 -arch i386 -Wunused-label -fasm-blocks -o
> inlineassembly_llvm inlineassembly.c
> inlineassembly.c: In function ‘main’:
> inlineassembly.c:7: warning: label ‘LASM$MyLabel’ defined but not used
>
> Compile with gcc 4.2 on MacOSX 10.6:
>
> gcc -arch i386 -Wunused-label -fasm-blocks -o inlineassembly
> inlineassembly.c
> no warning...