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2 Commits

Author SHA1 Message Date
Simon Pilgrim
1e8a4166d4 [SelectionDAG] Support BUILD_VECTOR implicit truncation in SelectionDAG::ComputeNumSignBits (PR32273) 
llvm-svn: 297852
 2017-03-15 16:22:24 +00:00
Simon Pilgrim
c44b14a962 [SelectionDAG][AArch64] Add test case showing incorrect SelectionDAG::ComputeNumSignBits BUILD_VECTOR handling 
Reduced from a mixture of PR32273 and David Green's test cases showing SelectionDAG::ComputeNumSignBits not correctly handling BUILD_VECTOR implicit truncation of inputs.

llvm-svn: 297847
 2017-03-15 15:40:34 +00:00