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Author SHA1 Message Date
Matt Arsenault 61001bbc03 AMDGPU: Make v2i64/v2f64 legal types. 
They can be loaded and stored, so count them as legal. This is
mostly to fix a number of common cases for load/store merging.

llvm-svn: 254086
 2015-11-25 19:58:34 +00:00
Matt Arsenault 4bf43d4e68 AMDGPU: Handle i64->v2i32 loads/stores in PreprocessISelDAG 
This fixes a select error when the i64 source was also
bitcasted to v2i32 in the original source.

Instead of awkwardly trying to select the modified source value and
the store, replace before isel begins.

Uses a worklist to avoid possible problems from mutating the DAG,
although it seems to work OK without it.

llvm-svn: 248589
 2015-09-25 17:27:08 +00:00