[patch]: COMMITTED Enhance rtl-dse to remove unaligned read after writes.

Segher Boessenkool segher@kernel.crashing.org
Wed Sep 19 00:05:00 GMT 2007

> this is fine, segher has a similar patch to the df-scan part which 
> fixes
> several compiling the kernel crashes on alpha.  You might as well 
> commit
> this one since you have to back out the dse part anyway.

>> +  /* Do nothing if the insn hasn't been emitted yet.  */
>> +  if (!BLOCK_FOR_INSN (insn))
>> +    return;

My patch was pretty much identical, FWIW (just had a dump printf()
as well, like df_insn_rescan() does -- but that is quite useless


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