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3 Commits

Author SHA1 Message Date
Juergen Ributzka
9bb95ddae4 [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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221848 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-11-13 00:36:46 +00:00
Juergen Ributzka
b80d6be6d7 [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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221847 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-11-13 00:36:43 +00:00
Juergen Ributzka
8d6824ea4c [FastISel][AArch64] Extend 'select' lowering to support also i1 to i16. 
Related to rdar://problem/18960150.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221846 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-11-13 00:36:38 +00:00