[llvm-commits] Patch to safely restore optimization to testcase from PR3225 on x86

[Duncan Sands]

On Friday 19 December 2008 02:31:13 Dan Gohman wrote:
>  > +  if (KnownZero == VTBits) {
> 
> If the shift count is known to be all-zero, shouldn't it
> have been simplified already by pre-legalize DAGCombine,
> if not InstCombine?

What if it was introduced by LegalizeTypes itself?

Ciao,

Duncan.