http://llvm.org/bugs/show_bug.cgi?id=6780
Summary: clang++ -m32 breaks inline asm
Product: clang
Version: unspecified
Platform: PC
OS/Version: FreeBSD
Status: NEW
Severity: normal
Priority: P
Component: LLVM Codegen
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
pes delta$ cat atomicity.cc
extern "C" {
}
typedef int _Atomic_word;
namespace __gnu_cxx
__attribute__((__visibility__("default")))
{
_Atomic_word __attribute__((__unused__)) __exchange_and_add(volatile
_Atomic_word * __mem, int __val){
register _Atomic_word __result;
__asm__ __volatile__("lock; xadd{l}
{%0,%1|%1,%0}":"=r"(__result), "=m"(*__mem):"0"(__val), "m"(*__mem));
return __result;
}
}
pes delta$ g++ -c -m32 atomicity.cc && echo success
success
pes delta$ clang++ -c -m32 atomicity.cc && echo success
/tmp/cc-NbWHQp.s: Assembler messages:
/tmp/cc-NbWHQp.s:22: Error: invalid character '{' in mnemonic
clang: error: assembler command failed with exit code 1 (use -v to see
invocation)
pes delta$
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