Hi Segher,
Our inline assembly only clobbers the first condition register
field, but we mark all of them as being clobbered.
No, we don't. cc has been an alias for cr0 for over twenty two and
a half years now; it has never changed meaning. This is an LLVM bug.
Thanks! I opened
On Sat, Nov 01, 2014 at 11:42:51AM +1100, Anton Blanchard wrote:
Our inline assembly only clobbers the first condition register field,
but we mark all of them as being clobbered.
No, we don't. cc has been an alias for cr0 for over twenty two and a
half years now; it has never changed meaning.
Our inline assembly only clobbers the first condition register field,
but we mark all of them as being clobbered.
This will cause LLVM to save and restore the non volatile condition
register fields around the inline assembly, which is completely
unnecessary. A simple example:
void foo(void)
{
