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Hi LLVM hackers, when switching one of our projects to LLVM we discovered some strange behavior. We tracked the issue down to the following test case: int main() { double v = 0.84711; int r; __asm__("fistl %0": "=m"(r) : "t"(v)); return r; } The (relevant) clang generated asm looks like this: fldt 0.84711 ## InlineAsm Start fistl -4(%ebp) ## InlineAsm End The compiler is loading the constant into the top fpu stack register (as requested by "t" constraint) and...

...constraints in an `asm' /Be3/Source/CVS/vorbis/lib/os.h:94: inconsistent operand constraints in an `asm' /Be3/Source/CVS/vorbis/lib/os.h:94: inconsistent operand constraints in an `asm' (yes they are five different errors) line 94 is the asm line in vorbis_ftoi __asm__("fistl %0": "=m"(i) : "t"(f)); I'm totally out of my depth when it comes to asm unless its on OS/390, and I've never used inline assembler before, so I need help. Dave --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.or...

...TROL /* both GCC and MSVC are kinda stupid about rounding/casting to int. Because of encapsulation constraints (GCC can't see inside the asm block and so we end up doing stupid things like a store/load that @@ -109,27 +117,13 @@ static inline int vorbis_ftoi(double f){ __asm__("fistl %0": "=m"(i) : "t"(f)); return(i); } - -#else -/* this is for beos */ - -typedef int vorbis_fpu_control; -static int vorbis_ftoi(double f){ - return (int)(f+.5); -} - -/* We don't have special code for this compiler/arch, so do it the slow way */ -#define vorbis_fp...