[FFmpeg-devel] [PATCH] Fix compilation with llvm-gcc on x86_64

[Michael Niedermayer]

On Sun, Nov 01, 2009 at 04:45:11PM +0000, Mans Rullgard wrote:
> Apparently llvm dislikes +g constraints with int operands.  This uses

compiler bug?


> a temporary x86_reg variable to avoid that situation.  Using a cast is

this slows the code down, x86_reg might be a different number of bits than
int. For example the int function argument may be 32bit on the stack and
if g now is feeded wih 64bit then there has to be a memory read and a memory
write if no register is left.


[...]
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Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

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