[llvm-commits] [PATCH] Add support for promoting integer SETCC

[Jakob Stoklund Olesen]

Hi,

The attached patch adds support for promoting integer SETCC in  
PromoteNode. Blackfin has i16 and i32 as legal types, but it only  
supports i32 SETCC.

Also add isBeforeLegalizeOps() to DAGCombinerInfo so  
TargetLowering::SimplifySetCC() knows when it can insert illegal SETCCs.

Fix one case of a bad SETCC created by TargetLowering::SimplifySetCC()  
after LegalizeOps. There may be others, but I have not been able to  
tease them out in a test case. I have a test case for this as part of  
my Blackfin back-end.

Patch passes "make check", please review.

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