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Author SHA1 Message Date
Juergen Ributzka 957a1454cc [FastISel][AArch64] Optimize select when one of the operands is a 'true' or 'false' value. 
Optimize selects of i1 in the presence of 'true' and 'false' operands to simple
logic operations.

This fixes rdar://problem/18960150.

llvm-svn: 221848
 2014-11-13 00:36:46 +00:00
Juergen Ributzka 424c5fd12f [FastISel][AArch64] Fold the cmp into the select when possible. 
This folds the compare emission into the select emission when possible, so we
can directly use the flags and don't have to emit a separate compare.

Related to rdar://problem/18960150.

llvm-svn: 221847
 2014-11-13 00:36:43 +00:00
Juergen Ributzka d1a042abd0 [FastISel][AArch64] Extend 'select' lowering to support also i1 to i16. 
Related to rdar://problem/18960150.

llvm-svn: 221846
 2014-11-13 00:36:38 +00:00