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Re: [PATCH] Fix -fcrossjumping at -O1 (PR rtl-optimization/48156)

On Fri, Mar 18, 2011 at 19:18, Kenneth Zadeck <zadeck@naturalbridge.com> wrote:
> yes, but i think that the reason this is a pr is that it seems to be needed
> for correctness.

Note that df_get_bb_dirty is defaulting to "return false", not
"abort".  This is what tricked crossjumping and caused the bug.

If I can get hold of my old SPEC2000 copy, I'd like to remove LIVE
completely from most -O2 passes (certainly those running after
initialization of uninitialized regs!) in 4.7.

Paolo
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