[LLVMdev] FP Stack overflow with inline asm

[Jakob Stoklund Olesen]

On Aug 31, 2011, at 12:28 AM, Florian Schirmer wrote:

> 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

This has been fixed in SVN trunk.

/jakob